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JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH . Vol. 17, N° 2Mention de date : 03/2020Paru le : 06/05/2020 |
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Ajouter le résultat dans votre panierChemistry and application of emerging ecofriendly antifouling paints : a review / Sampson Kofi Kyei in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Chemistry and application of emerging ecofriendly antifouling paints : a review Type de document : texte imprimé Auteurs : Sampson Kofi Kyei, Auteur ; Godfred Darko, Auteur ; Onyewuchi Akaranta, Auteur Année de publication : 2020 Article en page(s) : p. 315-332 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biodégradation
Chimie écologique
Durée de vie (Ingénierie)
Noix de cajou et constituants
Produits naturels
Revêtements antisalissures:Peinture antisalissures
Salissures biologiques
Tributylétain -- Suppression ou remplacementIndex. décimale : 667.9 Revêtements et enduits Résumé : There has been a global concern about the use of tributyltin-based coatings in combating biofouling in the marine industry. Although there have been alternatives to tributyltin in preventing biofouling, the emphasis is now on the use of nontoxic and/or ecofriendly natural materials which do not negatively affect the environment upon application. Natural materials are ecofriendly, biodegradable, cost-effective, and can be employed as precursors in the synthesis and formulation of biodegradable antifouling coatings. Consequently, many researchers are investing time into the synthesis and formulation of natural, ecofriendly antifouling coatings, comprised of higher biofiber, which would perform analogous antifouling like other conventional coatings, thus minimizing the more toxic base polymer proportion. A safe environment is surely the signal of a bright future; hence, cost-effective, biodegradable raw materials result in a long-term attainment of sustainability of these products to replace the expensive conventional ones. This review presents an overview of ecologically friendly, cost-effective, and legally acceptable ways of preventing and mitigating the growth of algae and other marine organisms from settling on the hull of a ship and other static constructions in oilfields. Note de contenu : - BIOFOULING AND CORROSION - BRIEF DETAILS AND PROBLEMS : The biofouling process - Characteristics of biofouling organisms
- WHAT ARE ANTIFOULING PAINTS ? : Biocides employed in antifouling systems - Mechanism of ecofriendly antifouling coatings
- Natural products as precursors in antifouling paints
- BIODEGRADABLE POLYMERS AS MATRICES FOR ANTIFOULING COATINGS : Biodegradable polymers from cashew nut shell liquid - Biodegradable polymers from other sources
- BIODEGRADABLE ANTIFOULING PAINTS AS ALTERNATIVES TO TBT COATINGS
- SUSTAINABLE BIOBASED PRODUCTS : NEW MATERIALS FOR A NEW ECONOMYDOI : https://doi.org/10.1007/s11998-019-00294-3 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00294-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33984
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Influence of radical photoinitiator content on UV curing process and UV-cured hybrid sol–gel films / Anaïs Even in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Influence of radical photoinitiator content on UV curing process and UV-cured hybrid sol–gel films Type de document : texte imprimé Auteurs : Anaïs Even, Auteur ; Guillaume Vignaud, Auteur ; Nadia Guitter, Auteur ; Nathalie Le Bozec, Auteur ; Philippe Tingaut, Auteur ; Yves Grohens, Auteur Année de publication : 2020 Article en page(s) : p. 333-343 Note générale : Bibliogr. Langues : Américain (ame) Catégories : AlkylTriméthoxysilane
Matériaux -- Propriétés barrières
Matériaux hybrides
Méthacrylates
Nanostructures
Photoamorceurs (chimie)
Photoréticulation
Polyaddition
Revêtements -- Propriétés thermomécaniques
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements organiques
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : Hybrid sol–gel coatings are widely used as protective layers for aluminum alloys because of their barrier abilities. This study aims at explaining the barrier properties of a sol–gel coating based on alkyltrimethoxysilane and methacrylate resin by its film structure. This approach was examined by modifying one photopolymerization parameter, e.g., by varying the content of radical photoinitiator. By neutral salt spray test and electrochemical impedance spectroscopy, the barrier properties are highlighted. The film structure is related to thermomechanical properties of films whose glass transition temperature and elastic modulus are measured by dynamic mechanical analysis and nanoindentation, respectively. On a finer scale, conversion of methacrylate functions calculated from Fourier transform infrared spectroscopy has given information on the chemical structure of films. The morphology of these coatings is studied by scanning electron microscopy, transmission electron microscopy, atomic force microscopy operating in tapping mode, and X-ray diffraction. Results revealed that formulations containing between 3 and 9 wt% of radical photoinitiator exhibit the maximal conversion of methacrylate functions and, at a microscopic scale, a homogeneous coating where the two organic and inorganic networks are well interpenetrated. This hybrid sol–gel microstructure corresponds to the highest glass transition temperature and the highest mechanical characteristics (elastic modulus, E and hardness, H) and the highest protection performance. This results in the best barrier properties, and thus the highest corrosion resistance. Note de contenu : - EXPERIMENTAL : Materials - Film preparation - Methods
- RESULTS AND DISCUSSION : Aspect - Barrier properties - Thermomechanical properties - Hybrid micro and nanostructure of UV-cured filmsDOI : https://doi.org/10.1007/s11998-019-00276-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00276-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33985
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and properties of water-dispersible polyisocyanates carrying sulfonate / Zhongkang Peng in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Synthesis and properties of water-dispersible polyisocyanates carrying sulfonate Type de document : texte imprimé Auteurs : Zhongkang Peng, Auteur ; Liuyan Tang, Auteur ; Ye Yuan, Auteur ; Jinqing Qu, Auteur Année de publication : 2020 Article en page(s) : p. 345-359 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Dispersions et suspensions
Hydrophilie
Poids moléculaires
Polyisocyanates
Polymères -- Synthèse
Polymères en émulsion
Polyuréthanes
Résistance à l'humidité:Résistance à l'eau
Revêtements bi-composant
Revêtements en phase aqueuse
Revêtements organiques
Stabilité au stockage
Sulfonates
Transparence (optique)
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : A series of N-alkylated aminosulfonic acids (NASAs) were synthesized with 1,4-butane sultone and primary amines and then reacted with hexamethylene diisocyanate trimer to obtain water-dispersible polyisocyanates (WDPs). Two-component waterborne polyurethane (2K-WPU) coatings were finally prepared by the reaction of WDPs and aqueous hydroxyl resins. The structures and properties of WDPs and 2K-WPU coatings were characterized. The effects of the categories and amounts of NASAs on the properties of WDPs and 2K-WPU coatings, including viscosities, water resistance and transparency, were investigated. The results showed that the average molecular weights and viscosities of the WDPs increased with the increase in the amounts and molecular weights of NASAs. 3-(Cyclohexylamino)-1-propanesulfonic acid possesses a high molecular weight, resulting in low-concentration –SO3 per mass, so a high concentration up to 3.5 wt% was needed to meet water-dispersible requirements. On the other hand, 3-isobutylamino-1-propanesulfonic acid (IBAPS) has high-concentration –SO3 per mass and only a low concentration (2.5 wt%) was required to offer satisfactory water dispersibility. 2K-WPU film cured by IBAPS-WDP displayed high gloss, good transparency and excellent water resistance owing to suitable steric hindrance and high content of –SO3H per mass. Note de contenu : - EXPERIMENTAL : Materials - The synthesis of NASAs - The synthesis of WDPs - Preparations of 2K-WPU films - Characterization
- RESULTS AND DISCUSSION : Synthesis and structures of NASAs and WDPs - Average molecular weight and viscosities of WDPs - Water dispersibility of WDPs - Storage stability of WDPs - Properties of 2K-WPU films - Relationship between substituted group of NASAs and properties of WDPs and 2K-WPUDOI : https://doi.org/10.1007/s11998-019-00277-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00277-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33986
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Synthesis of conducting PANi/SiO2 nanocomposites and their effect on electrical and mechanical properties of antistatic waterborne epoxy coating / Anh Son Nguyen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
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Titre : Synthesis of conducting PANi/SiO2 nanocomposites and their effect on electrical and mechanical properties of antistatic waterborne epoxy coating Type de document : texte imprimé Auteurs : Anh Son Nguyen, Auteur ; Thuy Duong Nguyen, Auteur ; Thu Thuy Thai, Auteur ; Anh Truc Trinh, Auteur ; Gia Vu Pham, Auteur ; Hoang Thai, Auteur ; Dai Lam Tran, Auteur ; Thi Xuan Hang To, Auteur ; Duy Trinh Nguyen, Auteur Année de publication : 2020 Article en page(s) : p. 361-370 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antistatiques
Dioxyde de silicium
Epoxydes
Matériaux hybrides
Polyaniline
Polymères -- Propriétés électriques
Polymères en émulsion
Revêtements -- Propriétés mécaniques
Revêtements en phase aqueuse -- Additifs
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Polyaniline (PANi) has been intensively incorporated in epoxy coatings as a conducting material. However, epoxy coatings containing PANi have poor mechanical properties. In this study, polyaniline/silica (PANi/SiO2) nanocomposites with different contents of silica were prepared via in situ chemical oxidative polymerization method. Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), and zeta potential measurements were used to examine the structure and the morphology of synthesized PANi/SiO2 nanocomposites. The thermal and electrical properties of the nanocomposite were studied by thermogravimetric analysis (TGA) and standard four-probe electrode method. It was shown that silica (SiO2) nanoparticles were covered by PANi in PANi/SiO2 nanocomposites and the electrical conductivity of nanocomposites decreased with the increase in SiO2 content. The PANi/SiO2 nanocomposite with 4.1 wt% SiO2 had a conductivity of 7.6 x 10-2 S/cm and that of PANi was 8.7 x 10-2 S/cm. Consequently, epoxy coatings containing 30 wt% PANi/SiO2 nanocomposites displayed a higher surface and volume resistance than the one containing pure PANi. In contrast, the increase in SiO2 content in PANi/SiO2 nanocomposite enhanced the mechanical properties of the epoxy coating, compared to epoxy coating containing pure PANi. The coating containing PANi/SiO2 nanocomposite with 17.2 wt% silica presented good mechanical properties (20 L/mil abrasion resistance, 100 kg cm impact strength) and admissible surface and volume resistivity (1.3 x 1011 Ω/cm2 and 6.6 x 10 10 Ω cm, respectively) for antistatic coatings. Note de contenu : - EXPERIMENTAL : Materials - Preparation of PANi/Sio2 nanocomposites - Preparation of Coatings - Analytical characterization - Conductivity measurement - Mechanical resistance measurement
- RESULTS AND DISCUSSION : Characterization of PANi/SiO2 nanocompositeEn ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00279-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33987
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Adsorption–desorption kinetics of silica coated on textile fabrics by the sol–gel process / Mohamed El Messoudi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
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Titre : Adsorption–desorption kinetics of silica coated on textile fabrics by the sol–gel process Type de document : texte imprimé Auteurs : Mohamed El Messoudi, Auteur ; Aicha Boukhriss, Auteur ; Omar Cherkaoui, Auteur ; M'hammed El Kouali, Auteur ; Said Gmouh, Auteur Année de publication : 2020 Article en page(s) : p. 371-380 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adsorption
Allongement (mécanique)
Analyse de varianceEn statistique, l'analyse de la variance (terme souvent abrégé par le terme anglais ANOVA : ANalysis Of VAriance) est un ensemble de modèles statistiques utilisés pour vérifier si les moyennes des groupes proviennent d'une même population. Les groupes correspondent aux modalités d'une variable qualitative (p. ex. variable : traitement; modalités : programme d'entrainement sportif, suppléments alimentaires ; placebo) et les moyennes sont calculés à partir d'une variable continue (p. ex. gain musculaire).
Ce test s'applique lorsque l'on mesure une ou plusieurs variables explicatives catégorielles (appelées alors facteurs de variabilité, leurs différentes modalités étant parfois appelées "niveaux") qui ont de l'influence sur la loi d'une variable continue à expliquer. On parle d'analyse à un facteur lorsque l'analyse porte sur un modèle décrit par un seul facteur de variabilité, d'analyse à deux facteurs ou d'analyse multifactorielle sinon. (Wikipedia)
Cinétique chimique
CotonLe coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles).
Désorption
Enduction textile
Essais dynamiques
Fibres textiles -- Propriétés mécaniques
Imperméabilisation
Microscopie électronique à balayage
Polyesters
Résistance à la traction
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
Sol-gel, Procédé
ThermogravimétrieIndex. décimale : 667.9 Revêtements et enduits Résumé : The present paper discusses the adsorption and desorption kinetics of silica coated on cotton (CO) and polyester (PES) textile fabrics. Surfaces of CO and PES textile were coated by the sol–gel process using tetraethylorthosilicate (TEOS) and chloropropyltriethoxysilane (CPTS) as silica precursors. The silica concentration was determined according to NF T90-007 standard. The kinetic adsorption data for CO samples can be described by the pseudo-first order and by the pseudo-second order for those of PES. The highest adsorption and desorption rate of silica was found for CO fabrics treated with CPTS and TEOS, respectively. The analysis of variance (ANOVA) was carried out to statistically verify the result found from adsorption and desorption experimental manipulations. The results of silica adsorption and desorption were statistically analyzed according to ANOVA test with a significance level of 0.05. Scanning electron microscopy observations were taken to assess the effect of desorption in the morphology of the coated fabrics. The mechanical properties of textile fabrics were investigated by the uniaxial traction test according to NF EN ISO 13934-1:2013 standard. Thermogravimetric analysis was used to investigate the thermal stability of fabrics in air. The results showed that both the mechanical and thermal properties of textile samples after silica desorption did not change radically. Also, their water repellency remained significant even after the desorption test. Note de contenu : - MATERIALS AND METHODS : Materials - Methods - Analysis of variance (ANOVA) - SEM - Water repellency test (drop test) - Tensil strength and elongation measurements - Thermogravimetric analysis
- RESULTS AND DISCUSSION : Adsorption kinetics - Desorption kinetics - Analysis of variance - SEM analysis - Water repellence properties (drop test) - Tensile strength and elongation measurements - Thermogravimetric analysisDOI : https://doi.org/10.1007/s11998-019-00281-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00281-8.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33988
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Initiated chemical vapor deposition of poly(hexafluorobutyl acrylate) thin films for superhydrophobic surface modification of nanostructured textile surfaces / Büsra Simcek in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
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Titre : Initiated chemical vapor deposition of poly(hexafluorobutyl acrylate) thin films for superhydrophobic surface modification of nanostructured textile surfaces Type de document : texte imprimé Auteurs : Büsra Simcek, Auteur ; Musfafa Karaman, Auteur Année de publication : 2020 Article en page(s) : p. 381-391 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Chimie des surfaces
Dépôt chimique en phase vapeur
Dioxyde de silicium
Enduction textile
Hydrophobie
Nanoparticules -- Synthèse
Polyacrylate d'hexafluorobutyle
Polymères -- Synthèse
Traîtements de surface
Vapeur d'eauIndex. décimale : 667.9 Revêtements et enduits Résumé : This study demonstrates the synthesis of poly(hexafluorobutyl acrylate) (PHFBA) thin films on textile substrates using initiated chemical vapor deposition (iCVD) method. Owing to its short perfluoroalkyl functional group, PHFBA is a suitable low-surface-energy finish that can be used for hydrophobic functionalization of textile surfaces. During iCVD of PHFBA, the use of initiator helped to achieve deposition rates up to 83 nm/min, which is nearly twice that achieved by PECVD. FTIR and XPS analyses of as-deposited films showed very high retention of carbonyl and perfluoroalkyl functionalities. Polyester and cotton fabrics were made superhydrophobic after conformal coating of PHFBA by iCVD. The decoration of fabric surfaces by SiO2 nanoparticles prior to the iCVD coating helped to create composite structures having dual-scale roughness. The final SiO2-treated and iCVD-PHFBA-coated textile fabrics showed very high water contact angles (> 165°). Note de contenu : - EXPERIMENTAL : Materials used - iCVD of PHFBA - Synthesis of SiO2 nanoparticles and treatment of fabric with such particles - Characterization
- RESULTS AND DISCUSSION : Structure of as-deposited PHFBA films - Disposition rates of iCVD-PHFBA - iCVD coating on SiO2-modified fabric surfacesDOI : https://doi.org/10.1007/s11998-019-00282-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00282-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33989
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Effect of molecular weight of polycarboxylate surfactant on properties of concentrated aqueous titanium dioxide dispersions / Prasad M. Sangli in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
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Titre : Effect of molecular weight of polycarboxylate surfactant on properties of concentrated aqueous titanium dioxide dispersions Type de document : texte imprimé Auteurs : Prasad M. Sangli, Auteur ; Sumit Chaudhary, Auteur ; Elvina Rose, Auteur ; Ritesh A. Bhavsar, Auteur Année de publication : 2020 Article en page(s) : p. 393-400 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dioxyde de titane
Dispersions et suspensions
Mouillage (chimie des surfaces)
Pigments
Poids moléculaires
Polycarboxylates
Rhéologie
Surfactants
Tension superficielleIndex. décimale : 667.9 Revêtements et enduits Résumé : Universal colorants used for point-of-sale tinting or dealer tinting system usually have titanium dioxide dispersion as one of the essential colorants to adjust “chroma” of the shade. It is imperative that this colorant exhibits optimum performance in water-based and solvent-based products. The paper focuses on the effect of varying molecular weight of polycarboxylate-based surfactants on the properties of the aqueous dispersion. Note de contenu : - EXPERIMENTAL : Materials - Pigment dispersion - Rheological characterization - Wetting and surface tension - Evaluation of reducing strength
- RESULTS AND DISCUSSION : Reducing strength - Rheology - Powder wettability and surface tension measurementsDOI : https://doi.org/10.1007/s11998-019-00285-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00285-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33990
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Abrasion resistance of polymer and polymer–ceramic composite coatings for steel hydraulic structures / P. V. Vijay in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
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Titre : Abrasion resistance of polymer and polymer–ceramic composite coatings for steel hydraulic structures Type de document : texte imprimé Auteurs : P. V. Vijay, Auteur ; Piyush R. Soti, Auteur ; Derrick A. Banerjee, Auteur ; Konstantinos A. Sierros, Auteur Année de publication : 2020 Article en page(s) : p. 401-411 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Essais de résilience
Matériaux céramiques
Mouillabilité
Mouillage (chimie des surfaces)
Polyéthylène haute densité
Profilométrie
Résistance à l'abrasion
Résistance à l'usure
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : There is an increased demand for abrasive wear-resistant coatings that add durability to steel hydraulic structures, particularly for those subjected to flowing water with debris and alternate wet/dry cycles. These coating systems provide not only corrosion and chemical resistance, but also good erosion and abrasion resistance to the metallic surfaces, which are constantly exposed to flowing water containing sand particles and debris. Generally, vinyl-based coatings are used on hydraulic steel structures to protect them from corrosion and abrasion. However, due to the existence of high water force and debris, the coating is abraded at a faster rate leading to significant maintenance and repair costs. In this study, abrasive wear resistance of conventional vinyl-based coating systems currently used on lock and dam steel structures by U.S. Army Corps of Engineers has been compared with polymer matrix composite coatings, fibrous polymer coatings, and ultrahigh molecular weight polyethylene (UHMWPE). Six coating systems were evaluated through two-body abrasion tests using a reciprocating abrader under dry and wet conditions. Furthermore, wettability of the coating systems and its effect on the wear rate under the presence of water was studied. In addition, scanning electron microscopy of the wear tracks on different coatings was conducted to study and identify their failure mechanisms. Based on the results, UHMWPE and polymer–ceramic composite coatings were found to perform significantly better than the conventional vinyl-based coatings. Note de contenu : - EXPERIMENTAL DETAILS : Coating systems - Surface preparation for application of coatings - Wear tests - Surface wettability
- RESULTS AND DISCUSSION : Depth and volume of coating abrasion - Rate of abrasive wear - Effect of surface wettability - Wear mechanisms and failure of coatings - Field implementation and inspection of coatingsDOI : https://doi.org/10.1007/s11998-019-00286-3 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00286-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33991
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Investigating propensity of roller spatter during application of water-based architectural paints: effect of thickeners and volume solids / Sumit Chaudhary in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
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Titre : Investigating propensity of roller spatter during application of water-based architectural paints: effect of thickeners and volume solids Type de document : texte imprimé Auteurs : Sumit Chaudhary, Auteur ; Ritesh A. Bhavsar, Auteur ; Venkata Gopal Reddy Chada, Auteur Année de publication : 2020 Article en page(s) : p. 413-425 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Copolymère styrène acrylique
Epaississants
Résistance aux éclaboussures
Revêtements en bâtiment:Peinture en bâtiment
Revêtements en phase aqueuse:Peinture en phase aqueuse
RhéologieIndex. décimale : 667.9 Revêtements et enduits Résumé : During roll coating application of water-based architectural paints, fibers are formed between roller and substrate. These fibers progressively thin and break up into several tiny droplets leading to the wastage of paints. This defect is widely known as spattering. In the current study, the propensity to spatter in fully formulated mid pigment volume concentration water-based architectural paints based on varying the type of thickeners, namely a combination of cellulosic with clay, cellulosic, and hydrophobically modified poly acetal/ketal polyether (HMPAPE), at similar and varying volume solids is investigated. The spatter tendency of paint is qualitatively assessed using ASTM D4707. Also, a new approach to quantify the spread area of spattered droplets is developed by thresholding-based image segmentation using an image processing toolbox of Mathematica. This newly developed quantitative approach will greatly help the formulator to better differentiate between formulations. Rheological tests, namely viscosity curve, amplitude sweep, frequency sweep, and first normal stress difference test, are carried out to unravel the flow and viscoelastic properties of paints in depth. An in-house custom-built fiber drawing device on a contact angle drop shape analyzer instrument is fabricated to study the extensional properties of paints. At the same volume solids, the paint based on a combination of cellulosic with clay thickener spatters the most, while the paint based on HMPAPE thickener spatters the least. This is mainly attributed to the chemistry, molecular weight, and thickening mechanism of thickeners. Eventually, a reliable correlation is established between observed spatter and the frequency-dependent elastic modulus outside the linear viscoelastic range at the same and varying solids for paints based on the different types of thickener. This correlation will help chemists to quickly screen formulations to minimize the spattering during roll coat application, thus saving time, cost, and manpower. Note de contenu : - EXPERIMENTAL : Chemicals and materials - Preparation of water-based paint - Determination of spatter resistance ASTM D4707 - Quantification of spatter droplets through image processing - Rheological characterization
- RESULTS AND DISCUSSIONS : Effect of type of thickeners/rheology modifiers on spatter resistance of water-based paints - Influence of volume solids on spatter resistance of paintsDOI : https://doi.org/10.1007/s11998-019-00287-2 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00287-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33992
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Waterborne epoxy resins modified by reactive polyacrylate modifier with fluorinated side chains / Hongyi Shi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Waterborne epoxy resins modified by reactive polyacrylate modifier with fluorinated side chains Type de document : texte imprimé Auteurs : Hongyi Shi, Auteur ; Sha He, Auteur ; Lu Weiqu, Auteur ; Yankun Xie, Auteur ; Liyan Liang, Auteur ; Ke Pi, Auteur Année de publication : 2020 Article en page(s) : p. 427-437 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Chimie des surfaces
Dispersions et suspensions
Emulsifiants
Energie de surface
Epoxydes
Essai Wolff-Wilborn
Fluoropolymères
Humidité -- Absorption:Eau -- Absorption
Inversion de phase (chimie)
Polyacrylates
Polymères en émulsion
Revêtements -- Propriétés thermiques
Revêtements en phase aqueuse
Revêtements organiques
Souplesse (mécanique)Index. décimale : 667.9 Revêtements et enduits Résumé : Waterborne difunctional polyacrylate with long fluorinated side chains and epoxy groups (WALF) was successfully synthesized and used as emulsifier and reactive surface modifier for epoxy resin. The structure of WALF was characterized by FTIR and 1H NMR. In order to investigate the effect of the length and the content of the fluorinated side chains on the properties of the epoxy thermosets, a waterborne difunctional polyacrylate with short fluorinated side chains and epoxy groups (WASF) was developed as a contrast modifier. The waterborne epoxy emulsion modified by WALF or WASF was prepared through phase inversion method. Transmission electron microscopy (TEM) signified that the waterborne epoxy emulsion has a particle size range of 201.4–590.2 nm, indicating excellent water dispersion property. In addition, the surface properties, thermal properties, and mechanical properties of the waterborne epoxy coating were also analyzed in detail. Compared with WASF, the epoxy coating modified by WALF had higher surface fluorine atomic concentration, lower surface energy, and higher thermal stability. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of fluorinated macronomer PHFBMA-GMA - Synthesis of WA, WALF, and WASF - Preparation of FWEA emulsion - Preparation of FWEA coating - Characterization
- RESULTS AND DISCUSSION : Structure characterization of WALF - Average particle size and TEM of fluorinated waterborne epoxy–polyacrylate particles - Surface properties of FWEA coatings - Surface composition of FWEA coatings - Thermal properties of FWEA coatings - Pencil hardness, adhesion, flexibility, and water absorption of FWEA, FWEASF, and FWEALF coatingsDOI : https://doi.org/10.1007/s11998-019-00288-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00288-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33993
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Leachable pegylated cellulose acetate complex: a promising approach for controlled porosity osmotic pump tablets of Captopril / Muhammad Faheem Akhtar in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Leachable pegylated cellulose acetate complex: a promising approach for controlled porosity osmotic pump tablets of Captopril Type de document : texte imprimé Auteurs : Muhammad Faheem Akhtar, Auteur ; Muhammad Hanif, Auteur Année de publication : 2020 Article en page(s) : p. 439-446 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acétate de cellulose L'acétate de cellulose est une matière plastique inventée en 1865. C'est l'ester acétate de la cellulose.
Comprimés
Formulation (Génie chimique)
Osmolalité
Polyéthylène glycol
SorbitolIndex. décimale : 667.9 Revêtements et enduits Résumé : The aim of the present study was to develop pegylated cellulose acetate coating layer having leachable membrane created by controlled porosity osmotic pump (CPOP) technique. Already optimized core tablets of Captopril were used for the application of CPOP. In Box–Behnken design, cellulose acetate, polyethylene glycol, and sorbitol were used as variables and %Captopril release as a response for the coating process. Formulations were characterized by weight gain, thickness of leachable membrane, content uniformity, drug release, pH, dissolution medium osmolality effect, FTIR, and stability analysis for the optimization purpose. Optimized formulation was within the pharmacopoeial limits. Observed weight gain was 4.38–6.97%, and thickness of leachable membrane was 1.24–1.47 mm. Content uniformity was found to be 91.65–99.61%. Phosphate buffer of pH 6.8 showed 86.22–92.79% drug release and the first-order release pattern. pH-independent but osmolality-dependent drug release was observed. No incompatibility between the ingredients of prepared dosage form was observed in FTIR analysis. Accelerated stability study for 6 months showed no significant change in the prepared dosage form. Conclusively, prepared CPOP tablets can be used for the controlled release of Captopril in hypertensive patients to maintain the desired drug concentration within the body for required time period. Note de contenu : - MATERIALS AND METHODS : Materials
- METHODS : Experimental design - Formulation of CPOP tablets - Physical evaluation of CPOP tablets - Content uniformity - Drug release kinetics - effect of dissolution medium osmolaty on %captopril release - Effect of pH on %captopril release - FTIR spectroscopic analysis - Stability study statistical analysis
- RESULTS AND DISCUSSION : Physicochemical process of CPOP tablets - Content uniformity of CPOP tablets - Drug release kinetics for CPOP tablets - Effect of dissolution medium osmolality on %captopril relase - Effect of pH on %captopril release - FTIR spectroscopic analysis - Stability studyDOI : https://doi.org/10.1007/s11998-019-00290-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00290-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33994
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible High-speed imaging the effect of snap-off distance and squeegee speed on the ink transfer mechanism of screen-printed carbon pastes / Sarah-Jane Potts in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : High-speed imaging the effect of snap-off distance and squeegee speed on the ink transfer mechanism of screen-printed carbon pastes Type de document : texte imprimé Auteurs : Sarah-Jane Potts, Auteur ; Chris Philips, Auteur ; Eifion Jewell, Auteur ; Ben Clifford, Auteur ; Yin Cheung Lau, Auteur ; Tim Claypole, Auteur Année de publication : 2020 Article en page(s) : p. 447-459 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Carbone
Electronique -- Matériaux
Encre d'imprimerie
Encre électronique
Imagerie (technique)
Rhéologie
SérigraphieIndex. décimale : 667.9 Revêtements et enduits Résumé : Screen printing is the most widely used process in the production of printed electronics due to its ability to consistently transfer inks containing a wide range of functional materials onto a range of substrates. However, despite its extensive use, the mechanism by which the ink is transferred through the mesh and onto the substrate is not fully understood. Existing theories are contradictory and lack experimental validation. Therefore, high-speed imaging was used in combination with a screen-printing simulation rig that was designed to provide good optical access to study ink deposition during the screen-printing process. The variation in the four stages of ink flow through the screen, described in the theory by Messerschmitt, has been quantified with respect to changes in snap-off distance and squeegee speed. Analyses of the images were compared with measurements of the ink properties and corroborated with analyses of the prints. This has provided a better understanding of the mechanism by which the ink transfers from the mesh to the substrate and subsequently separates in screen printing. This could be used as the basis for the development of predictive algorithms, as well as to improve the understanding of how to optimize print quality and performance. Note de contenu : - MATERIALS AND METHODS : Rheological and extensional testing - Screen-printing visualization method - Printed line characterization
- RESULTS : Rheological and extensional testing - Assessment of print contact regions and print characterizationDOI : https://doi.org/10.1007/s11998-019-00291-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00291-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33995
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Evaluation of the weathering resistance of waterborne acrylic- and alkyd-based coatings containing HALS, UV absorber, and bark extracts on wood surfaces / Özlem Özgenç in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Evaluation of the weathering resistance of waterborne acrylic- and alkyd-based coatings containing HALS, UV absorber, and bark extracts on wood surfaces Type de document : texte imprimé Auteurs : Özlem Özgenç, Auteur ; Sefa Durmaz, Auteur ; Selin Sahin, Auteur ; Ismail H. Boyaci, Auteur Année de publication : 2020 Article en page(s) : p. 461-475 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse spectrale
Antioxydants
Chimie analytique
Colorimétrie
Ecorces
Essais accélérés (technologie)
Extraction (chimie)
Polyacryliques
Polyalkydes
PolyphénolsLes polyphénols constituent une famille de molécules organiques largement présente dans le règne végétal. Ils sont caractérisés, comme l’indique le nom, par la présence d'au moins deux groupes phénoliques associés en structures plus ou moins complexes, généralement de haut poids moléculaire. Ces composés sont les produits du métabolisme secondaire des plantes.
Les polyphénols prennent une importance croissante, notamment grâce à leurs effets bénéfiques sur la santé. En effet, leur rôle d’antioxydants naturels suscite de plus en plus d'intérêt pour la prévention et le traitement du cancer, des maladies inflammatoires, cardiovasculaires et neurodégénératives. Ils sont également utilisés comme additifs pour les industries agroalimentaire, pharmaceutique et cosmétique
"Ils ont tous en commun la présence d'un ou plusieurs cycles benzéniques portant une ou plusieurs fonctions hydroxyles". La désignation "polyphénols" est consacrée par l'usage et, alors qu'elle ne devrait concerner que les molécules portant plusieurs fonctions hydroxyle phénolique, elle est habituellement utilisée pour l'ensemble de ces composés.
Les polyphénols naturels regroupent donc un vaste ensemble de substances chimiques comprenant au moins un noyau aromatique, portant un ou plusieurs groupes hydroxyle, en plus d’autres constituants. Il y a quatre principales familles de composés phénoliques : les acides phénoliques (catéchol, acide gallique, acide protocatéchique), les flavones, l'acide chlorogénique et les quinones. Ils peuvent aller de molécules simples, comme les acides phénoliques, à des composés hautement polymérisés, de plus de trente mille daltons, comme les tanins (acide tannique).
Les polyphénols sont communément subdivisés en phénols simples, acides phénoliques et coumarines, en naphtoquinones, en stilbénoïdes (deux cycles en C6 liés par deux atomes de carbone), en flavonoïdes, isoflavonoïdes et anthocyanes, et en formes polymérisées : lignanes, lignines, tanins condensés. Ces squelettes carbonés de base sont issus du métabolisme secondaire des plantes, élaborés par la voie du shikimate.
Les polyphénols sont présents dans diverses substances naturelles : sous forme d'anthocyanine dans les fruits rouges, le vin rouge (en relation avec les tanins, phénomène du "paradoxe français"), sous forme de proanthocyanidines dans le chocolat et le vin, d'acides caféoylquinique et féruloylquinique dans le café, de flavonoïdes dans les agrumes, et sous forme de catéchines comme le gallate d'épigallocatéchine dans le thé vert, de quercétine dans les pommes, les oignons, le vin rouge, etc.
D'après une étude réalisée avec des volontaires via Internet, les sources alimentaires de polyphénols sont principalement le café (36,9 %), le thé — vert ou noir — (33,6 %), le chocolat pour son cacao (10,4 %), le vin rouge (7,2 %) et les fruits (6,7 %)18. Parmi les fruits, les polyphénols, très présents dans toutes les pommes, sont encore plus concentrés dans les pommes à cidre (riches en tanin), qui peuvent en contenir jusqu'à quatre fois plus : c'est une biodiversité qui se manifeste en richesse aussi bien qualitativement que quantitativement en polyphénols. (Wikipedia)
Revêtements en phase aqueuse
Rugosité
StatistiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : In this study, tree bark extracts were assessed as functional additives to provide protection in waterborne acrylic- and alkyd-based coatings. Tree bark extracts acted as natural photostabilizers and inhibited UV degradation with high UV absorption capacity. The coating systems comprising bark extracts were compared to the control coating groups comprising ultraviolet light absorbers (UVA) of the hydroxyphenyl-s-triazine (HPT) for acrylic and nonbasic amino ether (NOR) hindered amine light stabilizers (HALS) for alkyd. Scots pine surfaces coated with acrylic and alkyd coatings were exposed to artificial weathering for 2016 h. Three different trees (maritime pine, alder and Calabrian pine) with high antioxidant activity and phenol content were used for this purpose. The chemical structure of acrylic and alkyd coating systems was also examined using ATR–FTIR spectroscopy. The weathering resistance of coating systems containing extracts was evaluated in terms of their color changes and surface roughness through macroscopic evaluation, and they were compared to commercial UV absorber. The lowest color change was observed in the alkyd-based coatings with the bark extract. For the alkyd coatings, the color change (∆E) in the control samples was 24.85, whereas it was found to be 4.68, 5.92 and 7.80 in the test samples containing Calabrian pine, maritime pine and alder bark, respectively. However, color stabilization of the acrylic coatings with UV absorber was found to be much better than the acrylic coatings with extracts. The alkyd coating systems with extracts did not exhibit the same performance for surface roughness. The alkyd coating with the UV absorber provided a smoother surface than that with bark extracts. The acrylic coatings with alder and maritime extracts provided the best results. Acrylic coating may be compatible with (Calabrian) bark extracts. According to the obtained results, it was seen that tree bark extracts in wood coating systems have a potential to substitute commercial UV absorbers as a natural product. Note de contenu : - EXPERIMENTAL : Wood and bark samples - Bark extraction and coating system process - Total polyphenols analysis, antioxidant activity, and UV-Vis spectroscopy - Application and preparation of coating systems - Chemical analysis of coating systems - Artificial weathering test - Color measurement - Surface roughness measurement and macroscopic evaluations - Statistical analysis
- RESULTS AND DISCUSSION : Total polyphenols analysis, antioxidant activity, and UV spectroscopy - Chemical characterization of coating systems by using ATR-FTIR spectrometry
- COLOR CHANGE
- SURFACE ROUGHNESS AND MACROSCOPIC EVALUATIONSDOI : https://doi.org/10.1007/s11998-019-00293-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00293-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33996
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Modification of triglyceride oil with benzoxazine functionalized silane for the purpose of oil-based binder / Didem Aycan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Modification of triglyceride oil with benzoxazine functionalized silane for the purpose of oil-based binder Type de document : texte imprimé Auteurs : Didem Aycan, Auteur ; A. Tuncer Erciyes, Auteur Année de publication : 2020 Article en page(s) : p. 477-483 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Benzoxazine
Caractérisation
Enrobage (technologie)
Huiles et graisses -- Constituants
Liants
Organosilanes
Réaction de couplage
Réticulation (polymérisation)
Revêtements (produits chimiques)
Silanes
TriglycéridesIndex. décimale : 667.9 Revêtements et enduits Résumé : In the present study, a novel and easy approach for an oil-based binder production was realized by the modification of partial glycerides (PGs) with benzoxazine functionalized silane (Bz-Si) which was synthesized by the reaction between benzoxazine and 3-aminopropyltriethoxysilane. PG mixture obtained by the glycerolysis reaction was subjected to solvent extraction with methanol to concentrate PG. The enhanced partial glycerides (PGE) were thermally cured with Bz-Si. After that, the film sample cured by means of sol–gel reaction (CF(Bz-Si)/PGE) was examined in view of film properties. Applied tests showed that CF(Bz-Si)/PGE could be used as an oil-based binder for coating applications. Note de contenu : - Materials
- Characterizations
- Synthesis of partial glycerides (PGs)
- Preparation of enhanced PG (PGE)
- Synthesis of benzoxazine functional silane (Bz-Si)
- Preparation of crosslinking film samples of Bz-Si and PGE (CF(Bz-Si)/PGE)
- Determination of film propertiesDOI : https://doi.org/10.1007/s11998-019-00296-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00296-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33997
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Application of atmospheric pressure plasma for adhesion improvement in polyurethane coating on polypropylene fabrics in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Application of atmospheric pressure plasma for adhesion improvement in polyurethane coating on polypropylene fabrics Type de document : texte imprimé Année de publication : 2020 Article en page(s) : p. 485-501 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Analyse de varianceEn statistique, l'analyse de la variance (terme souvent abrégé par le terme anglais ANOVA : ANalysis Of VAriance) est un ensemble de modèles statistiques utilisés pour vérifier si les moyennes des groupes proviennent d'une même population. Les groupes correspondent aux modalités d'une variable qualitative (p. ex. variable : traitement; modalités : programme d'entrainement sportif, suppléments alimentaires ; placebo) et les moyennes sont calculés à partir d'une variable continue (p. ex. gain musculaire).
Ce test s'applique lorsque l'on mesure une ou plusieurs variables explicatives catégorielles (appelées alors facteurs de variabilité, leurs différentes modalités étant parfois appelées "niveaux") qui ont de l'influence sur la loi d'une variable continue à expliquer. On parle d'analyse à un facteur lorsque l'analyse porte sur un modèle décrit par un seul facteur de variabilité, d'analyse à deux facteurs ou d'analyse multifactorielle sinon. (Wikipedia)
Caractérisation
Plasma à pression atmosphériqueUn plasma à pression atmosphérique (ou plasma à PA ou plasma froid) est le nom donné à une catégorie spéciale de plasma pour lequel la pression approche celle de l’atmosphère.
Le plasma à pression atmosphérique marque une nette différence avec le plasma basse et haute pression. En effet, contrairement à ces derniers aucune enceinte de traitement n'est nécessaire. Ce type de plasma peut donc être utilisé directement sur ligne de production, évitant ainsi l'utilisation de vide qui est extrêmement onéreuse.
Polypropylène
Polyuréthanes
Résistance au pelage
Revêtements organiques
Statistique
Technique des plasmas
Textiles et tissus synthétiques
Traîtements de surfaceIndex. décimale : 667.9 Revêtements et enduits Résumé : Atmospheric pressure plasma treatment modifies the surface of textile materials at nano level. The effectiveness of plasma surface modification is closely associated with fabric weave construction and surface structure. Adhesion properties of three different polypropylene (PP) fabrics with a polyurethane (PU) coating have been investigated with respect to different plasma treatment time and power. Peel off strength was measured as the separation force required to separate coating layer from fabric. Statistical analysis of the peel off strength was performed by ANOVA. A substantial increase in adhesion of PU on plasma-treated samples was observed. Various characterization techniques such as contact angle, X-ray photoelectron spectroscopy, scanning electron microscopy and tensile measurement were used to inspect hydrophilicity, surface chemistry, surface morphology and physical properties of PP fabrics, respectively. As evident from results captured using various characterization techniques, atmospheric pressure plasma treatment enhances the surface properties (hydprophilicity, surface morophology and surface chemistry) without affecting the bulk (tensile strength) properties. It is shown that the plasma treatment parameters as well as the textile structure play an important role in adhesion improvement. Further, it is observed that the effectiveness of the plasma treatment is closely linked to the structure of the textiles fabrics. Note de contenu : - MATERIALS AND METHODS : Materials - Plasma treatment of PP fabrics
- CHARACTERIZATION TECHNIQUES : Thickness and weight add-on study - Wettability study - Spectroscopic analysis - Mechanical analysis
- RESULTS AND DISCUSSION : Thickness and weight add-on - Wettability study - Spectroscopic analysis - Adhesion strength - Surface morphological analysis by SEM and AFM - Mechanical propertiesEn ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00300-8.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33998
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Vapor phase assembly of urea–amine compounds and their protection against the atmospheric corrosion of carbon steel / Hong-Liang Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Vapor phase assembly of urea–amine compounds and their protection against the atmospheric corrosion of carbon steel Type de document : texte imprimé Auteurs : Hong-Liang Zhang, Auteur ; Teng-Fei Ma, Auteur ; Li Xin Gao, Auteur ; Da Quan Zhang, Auteur ; Guo-An Wei, Auteur ; Hong-Bin Yan, Auteur ; Shi-Li Wei, Auteur Année de publication : 2020 Article en page(s) : p. 503-515 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Anticorrosifs
Anticorrosion
Calcul
Chimie quantique
Composés organiques -- Synthèse
Inhibiteurs de corrosion volatils
Métaux -- Revêtements protecteurs
Polyamines
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Two kinds of polyamine compounds, bis-cyclohexylaminoethylurea (BCAU) and monocyclohexylaminoethylurea (MCAU), are synthesized via Mannich reaction. The anticorrosion films on carbon steel surface are prepared by the vapor phase assembly method. After 72 h volatilization at 50°C, the mass-loss for BCAU and MCAU in the closed space are 1.13% and 1.45%. The volatile-inhibiting sieve (VIS) test, the volatile-inhibiting ability test and the electrochemical impedance spectroscopy measurement are used to compare the prevention of the atmospheric corrosion by the assembly film. BCAU and MCAU have 92.44% and 87.56% inhibition efficiency for carbon steel in VIS test. On the basis of theoretical calculation and surface analysis, the protective film structures on carbon surface from the vapor phase assembly are proposed. Note de contenu : - EXPERIMENTAL : Materials - Volatilization mass-loss test - Vapor phase inhibition test - Electrochemical impedance spectroscopy - Surface morphology - XPS analysis - Theoretical calculations
- RESULTS AND DISCUSSION : Physical properties of BACU and MACU - Volatilization mass-loss test - Vapor phase inhibition test - Electrochemical impedance spectroscopy - Microscopic observation - XPS analysis - Theoretical studiesDOI : https://doi.org/10.1007/s11998-019-00301-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00301-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33999
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Waterborne coatings based on acrylic latex containing nanostructured ZnO as an active additive / Martina Dankova in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Waterborne coatings based on acrylic latex containing nanostructured ZnO as an active additive Type de document : texte imprimé Auteurs : Martina Dankova, Auteur ; Andrea Kalendova, Auteur ; Jana Machotova, Auteur Année de publication : 2020 Article en page(s) : p. 517-529 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Antimicrobiens
Corrosion
Essais (technologie)
Formulation (Génie chimique)
Latex
Liants
Nanoparticules
Oxyde de zinc
Polyacryliques
Revêtements (produits chimiques):Peinture (produits chimiques)
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : This work was devoted to the study of the properties of an acrylate latex-based binder synthesized by semicontinuous emulsion polymerization. Nanoparticles of zinc oxide (NPsZnO) in an amount of 1.5 wt% with respect to the polymer content were added to the binder during the synthesis procedure. The binder was then homogenized with various anticorrosion pigments, fillers, and additives to obtain model anticorrosion paints. In addition, model paints with expected enhanced antimicrobial resistance designed for the protection of mineral substrates were also formulated and prepared. The effects of NPsZnO on the physicomechanical properties and on the chemical, anticorrosion, and antimicrobial resistance of the paint films were examined. The properties of the paints based on the synthesized binders were also compared to those of a commercial acrylate-type binder. The results show that incorporation of NPsZnO into the latex during the synthesis provided stable polymeric dispersions exhibiting physicochemical, mechanical, and anticorrosion properties that were superior to those of a blank binder (containing no nanoparticles) as well as to the commercial binder. It was also demonstrated that the binder with NPsZnO provided anticorrosion paints that are usable as coatings for environments with a moderate corrosion burden as well as paints for interior applications with reduced biocide contents. Note de contenu : - EXPERIMENTAL METHODS AND MATERIALS : Preparation of latexes - Formulation and preparation of the pigmented points - Preparation of paint films samples
- TESTING METHODS : Determination of the characteristic properties of the pigments, fillers, and binders - Physicomechanical and chemical properties of the prepared coatings - Antimicrobial properties of the coating films
- RESULTS AND DISCUSSION : Determination of the characteristic material properties - Hardness evaluation : Buchholz indentation test - Flash corrosion evaluation for the anticorrosion paints - Evaluation of mechanical and chemical resistance of the anticorrosion paints - Evaluation of the corrosion resistance of the paint films after exposure to a condensation-water atmosphere - Evaluation of the antimicrobial resistance of the paints designed for mineral substratesDOI : https://doi.org/10.1007/s11998-019-00302-6 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00302-6.pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34000
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Green synthesis of copper oxide nanoparticles: a promising approach in the development of antibacterial textiles / Bhavika Turakhia in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Green synthesis of copper oxide nanoparticles: a promising approach in the development of antibacterial textiles Type de document : texte imprimé Auteurs : Bhavika Turakhia, Auteur ; Madhihalli Basavaraju Divakara, Auteur ; Mysore Sridhar Santosh, Auteur ; Sejal Shah, Auteur Année de publication : 2020 Article en page(s) : p. 531-540 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens
Caractérisation
CotonLe coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles).
Cuivre
Enduction textile
Nanoparticules
Textiles et tissus à usages médicaux
Textiles et tissus à usages techniques
Textiles et tissus à usages techniques -- Propriétés mécaniquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Textiles are known to be the best substrates for growing a variety of microorganisms efficiently at appropriate temperatures and humidity in contact with the human body. Currently, increasing public concern about hygiene has been driving many investigations about antimicrobial surface modification of textiles. The present research reports on the synthesis and characterization of nanosized copper oxide nanoparticles (CuONPs) and their application on cotton fabric to increase the bactericidal and hydrophobic properties. The synthesized materials have been subjected to spectroscopic and microscopic characterizations to help in understanding their structure, morphology, size, and composition. Further, upon dispersion of the nanoparticles onto the fabric, its hydrophobicity and mechanical properties were evaluated using electron microscopy and universal testing machine. Treated cotton fabric exhibits higher tensile strength (32 MPa) than the untreated one (27 MPa), whereas copper nanoparticle-coated cotton fabric shows a fair hydrophobicity. Moreover, CuONPs-treated and untreated cotton fabrics have been analyzed for bactericidal activity against various gram-negative and gram-positive strains. Finally, the CuONPs-coated cotton fabric displays greater antibacterial activity against E. coli and exhibits superior antimicrobial activity even after 30 cycles of washing, indicating that the CuONPs-coated cotton fabric has a higher potential to be employed as a medical textile to avoid cross-infection within a clinical environment. Note de contenu : - MATERIALS AND METHODS : Collection of plant material - Preparation of plant extracts - Green synthesis of CuONPs
- CHARACTERIZATION : Analysis using UV-visible spectra - FTIR analysis - X-ray diffraction analysis (XRD) - Antimicrobial activity of CuONPs - Evaluation of the bactericidal activity of CuONPs on cotton fabric
- TEXTILE PROPERTIES OF COTTON FABRIC : Washing fastness - Tensile strength - Water absorption
- RESULTS AND DISCUSSION : Spectral analysis - Antimicrobial activity - Antibacterial evaluation of surface finished textile -
- TEXTILE PROPERTIES OF COTTON FABRIC : Wahsing fastness - Water absorption - Tensile strengthDOI : https://doi.org/10.1007/s11998-019-00303-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00303-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34001
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Effect of NH4F treatment on the chromaticity of the Ba2+-doped y-Ce2S3 red pigment / Xiu Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Effect of NH4F treatment on the chromaticity of the Ba2+-doped y-Ce2S3 red pigment Type de document : texte imprimé Auteurs : Xiu Li, Auteur ; Yueming Li, Auteur ; Zhike Li, Auteur ; Zhumei Wang, Auteur ; Yan Hong, Auteur ; Fusheng Song, Auteur Année de publication : 2020 Article en page(s) : p. 541-552 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Cerium
Colorimétrie
Pigments
Pigments inorganiques
Rouge (couleur)Index. décimale : 667.2 Colorants et pigments Résumé : The Ba2+-doped cerium precursor powder, (Ce, Ba)CO3, was successfully prepared via a co-precipitation reaction method using Ce(NO3)3·6H2O, Ba(NO3)3, and (NH4)2CO3 as raw materials. The above powder was placed in a muffle furnace and calcined at 1000°C for 120 min to obtain the corresponding oxide, (Ce, Ba)O2, subsequently, and the oxide was vulcanized at 850°C for 150 min with CS2 as a sulfur source to obtain the Ba2+-doped γ-Ce2S3 red pigment. The effects of different NH4F concentrations (1.0, 2.5, and 4.0 M) and treatment times (30, 60, 90, and 120 min) on the phase composition and chromaticity of the pigment were studied by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray diffractometry (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and CIELAB colorimetry. The SEM and EDS analyses revealed the presence of irregular flaky particles on the pigment surface after the NH4F treatment; the amounts of particles gradually increased with the NH4F concentration. The XRD and Raman spectra confirmed that these particles were CeF3 and CeFS heterophases. Furthermore, the Raman spectra denoted the presence of amorphous carbon. The XPS analysis demonstrated that the NH4F treatment did not change the valence of Ce (Ce3+ for γ-Ce2S3). The chromaticity of a sample reached its maximum (L* = 34.24, a* = 38.19, and b* = 39.95) after it was treated using 2.5 M NH4F for 60 min, indicating that the elimination of amorphous carbon can effectively improve the pigment chromaticity. Note de contenu : - EFFECT OF THE NH4F CONCENTRATION : Scanning electron microscopy and energy-dispersive spectroscopy analysis - Phase and structure analysis - X-ray photoelectron spectroscopy (XPS) analysis - Chromaticity analysis
- DIFFERENT TREATMENT TIMES : SEM and EDS analysis - Phase analysis - Chromaticity analysisDOI : https://doi.org/10.1007/s11998-019-00304-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00304-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34002
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and biological activities of 1H-indole-1-carboxylic acid aryl esters as a marine antifouling coating / Xuemi Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Synthesis and biological activities of 1H-indole-1-carboxylic acid aryl esters as a marine antifouling coating Type de document : texte imprimé Auteurs : Xuemi Wang, Auteur ; Xuan Wang, Auteur ; Miao Dong, Auteur ; Zhiming Li, Auteur ; Zhongxin Liu, Auteur ; Juyou Lu, Auteur ; Qiang Lin, Auteur ; Jianxin Yang, Auteur Année de publication : 2020 Article en page(s) : p. 553-561 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Algues marines
Barnacles
Composés organiques -- Synthèse
Esters aryliques d'acide indole-1-carboxylique
Revêtements antisalissures:Peinture antisalissures
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : A series of indole-1-carboxylic acid aryl esters was synthesized with indole and substituted phenols as raw materials. The structures of the target compounds were validated by IR and 1H-NMR spectroscopies. The inhibitory activities of the target compounds and their potencies against marine fouling organisms were investigated. The results showed that the target compounds had significant inhibitory effects on the growth of three seaweeds: Isochrysis galbana, Platymonas subcordiformis, and Navicula, and the target compounds also had excellent inhibition on the survival of barnacle larvae. The substituent structure–activity relationships revealed a significant effect on biological inhibition activity: Compounds substituted by electron-withdrawing groups had greater bioactivities than those containing electron-donating groups. Release rate of antifoulant and marine field tests indicated the final compounds had an outstanding antifouling potency against marine fouling organisms. Note de contenu : - EXPERIMENTAL : Chemistry : general procedures - General procedure for the preparation of indole derivatives - Experimental method of growth inhibition of marine algae - Experimental method of biological activity against barnacles - Release rate of antifoulant - Experimental of marine field tests
- RESULTS AND DISCUSSION : Inhibition on marine algae growth - Inhibition on barnacle larvae - Release rate of antifoulant - Application as antifouling coatingsDOI : https://doi.org/10.1007/s11998-019-00305-3 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34003
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible The study of the possibility of silicon dioxide coatings modified by (3-aminopropyl)triethoxysilane as protective materials for stone / Dan Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : The study of the possibility of silicon dioxide coatings modified by (3-aminopropyl)triethoxysilane as protective materials for stone Type de document : texte imprimé Auteurs : Dan Li, Auteur ; Feigao Xu, Auteur Année de publication : 2020 Article en page(s) : p. 563-572 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aminopropyltriethoxysilane
Calcaire
Caractérisation
Enrobage (technologie)
Essais de pelage
Formulation (Génie chimique)
Hydrophobie
Orthosilicate de tétraéthyleL'orthosilicate de tétraéthyle (TEOS) est un composé chimique de formule Si(OCH2CH3)4 ou plus simplement Si(OEt)4; l'abréviation TEOS (pour tetraethylorthosilicate) est généralement utilisée dans l'industrie du sol-gel, où il est intensivement étudié. La majorité des études en sol-gel pour des sols de silices ont utilisé ce produit comme précurseur.
Le TEOS est généralement produit par alcoolyse du tétrachlorure de silicium SiCl4 dans de l'éthanol CH3CH2OH :
SiCl4 + 4 CH3CH2OH → Si(OCH2CH3)4 + 4 HCl.
Il est utilisé pour la réticulation de silicones et possède certaines applications comme précurseur du dioxyde de silicium SiO2 dans l'industrie des semi-conducteurs6 dans le cadre d'une réaction sol-gel. La propriété remarquable du TEOS est en effet de former du SiO2 par simple hydrolyse en libérant de l'éthanol CH3CH2OH :
Si(OCH2CH3)4 + 2 H2O → SiO2 + 4 CH3CH2OH.
Oxyde de silicium
Pierre
PolydiméthylsiloxaneLe polydiméthylsiloxane —[O-Si(CH3)2]n—, ou poly(diméthylsiloxane) selon la nomenclature systématique, communément appelé PDMS ou diméthicone, est un polymère organominéral de la famille des siloxanes souvent présent dans les shampoings. On l'y ajoute pour augmenter le volume des cheveux mais il peut également aller boucher les pores du cuir chevelu et rendre les cheveux gras. C'est une des raisons pour lesquelles se laver les cheveux tous les jours est très déconseillé avec un shampooing contenant des silicones.
Il existe également de l'amodiméthicone, qui est un dérivé du diméthicone.
Le polydiméthylsiloxane est un additif alimentaire (E900), utilisé comme antimoussant dans les boissons (Coca-Cola BlāK).
La chaîne de poly(diméthylsiloxane) forme également la structure de base des huiles et des caoutchoucs silicones.
Réaction de couplage
Réticulants
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Silicon dioxide coatings modified by (3-aminopropyl)triethoxysilane (ATS) were studied to test their potential use as materials for stone protection. The synthetic route is simple and environmentally friendly due to the lack of volatile organic components. These materials are simply obtained by mixing tetraethylorthosilicate (TEOS), ATS, and OH-terminal polydimethylsiloxane (PDMS-OH). The ATS acts as a curing catalyst and coupling agent. The formulations can be directly applied onto stone substrates, particularly the external stone of buildings. Thus, the goal of an application of silicon dioxide modified by ATS is to restore and to protect building substrates. In the hybrid materials, PDMS acts to form bridges linking the silica particles. Finally, the effectiveness of these products as a stone consolidant and coating was assessed by multiple indicators, including the mechanical resistance, peeling performance, water uptake by capillarity, and contact angle. Note de contenu : - MATERIALS AND METHODS : Reagents - Characterization methods - Preparation of ATS-modified silicone dioxide - Consolidation of simulating the weathered limestone - Peeling performance tests - Effectiveness as a hydrophobic coating - Evaluation of the negative effects induced by the treatments
- RESULTS AND DISCUSSION : Cure characterization - Effectiveness of N formulations as stone consolidants - Effectiveness as a hydrophobic coatingDOI : https://doi.org/10.1007/s11998-019-00307-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00307-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34004
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Transparent ZnO-coated polydimethylsiloxane-based material for photocatalytic purification applications / I. M. Sosnin in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Transparent ZnO-coated polydimethylsiloxane-based material for photocatalytic purification applications Type de document : texte imprimé Auteurs : I. M. Sosnin, Auteur ; S. Vlassov, Auteur ; E. G. Akimov, Auteur ; V. I. Agenkov, Auteur ; L. M. Dorogin, Auteur Année de publication : 2020 Article en page(s) : p. 573-579 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Caractérisation
Enrobage (technologie)
Essais (technologie)
Lumière visible
Oxyde de zinc
Photocatalyse
PolydiméthylsiloxaneLe polydiméthylsiloxane —[O-Si(CH3)2]n—, ou poly(diméthylsiloxane) selon la nomenclature systématique, communément appelé PDMS ou diméthicone, est un polymère organominéral de la famille des siloxanes souvent présent dans les shampoings. On l'y ajoute pour augmenter le volume des cheveux mais il peut également aller boucher les pores du cuir chevelu et rendre les cheveux gras. C'est une des raisons pour lesquelles se laver les cheveux tous les jours est très déconseillé avec un shampooing contenant des silicones.
Il existe également de l'amodiméthicone, qui est un dérivé du diméthicone.
Le polydiméthylsiloxane est un additif alimentaire (E900), utilisé comme antimoussant dans les boissons (Coca-Cola BlāK).
La chaîne de poly(diméthylsiloxane) forme également la structure de base des huiles et des caoutchoucs silicones.Index. décimale : 667.9 Revêtements et enduits Résumé : We describe production and photocatalytic properties of a material based on polydimethylsiloxane (PDMS) as a carrier substrate coated with microparticles of zinc oxide (ZnO). The ZnO microparticles are fabricated by our original hydrothermal method and intentionally have a defect structure. According to our understanding, this peculiar defect structure contributes to the greatly enhanced photocatalytic properties of the ZnO material. The resulting photocatalyst demonstrates high activity under visible light (410 nm) in the process of phenol degradation in water solution, while generally ZnO is inactive below the UV range. In addition, we compare the photocatalytic activity of our ZnO/PDMS composite to that of the same ZnO powder suspension in a similar setup. We find that the same activity is achieved by three orders of magnitude smaller amount of ZnO in our composite compared to the powder suspension. The ZnO/PDMS interface exhibits sufficiently strong bonding for stable operation that is ensured during material production. The obtained photocatalytic material preserves the transparency of PDMS due to the low amount of attached ZnO (about 0.1% by mass). The transparency of the photocatalytic ZnO/PDMS material enables easy performance upgrades by constructing multilayer or manifold fluid treatment devices. Note de contenu : - Sample preparation
- Characterization
- Photocatalytic testsDOI : https://doi.org/10.1007/s11998-019-00314-2 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00314-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34005
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