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Antistatic and antibacterial two-component waterborne polyurethane coating / Xianwen Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
[article]
Titre : Antistatic and antibacterial two-component waterborne polyurethane coating Type de document : texte imprimé Auteurs : Xianwen Li, Auteur ; Xinmeng Xu, Auteur ; Faai Zhang, Auteur Année de publication : 2023 Article en page(s) : p. 869-881 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens
Antistatiques
Caractérisation
Cuivre
Nanoparticules
Polyaniline
Polyuréthanes
Revêtements bi-composant
Revêtements en phase aqueuse
Revêtements organiques
ZirconeLe dioxyde de zirconium ou oxyde de zirconium(IV) couramment appelée zircone est un composé inorganique du zirconium de formule ZrO2. Ce matériau est une céramique technique d'aspect opaque. Appelé CZ (Cubic Zirconia) lorsque transparent, il est utilisé pour imiter le diamant. Il ne faut pas le confondre avec le zircon (ZrSiO4). Sous sa forme tétragonale, l'oxyde de zirconium est un matériau a vocation mécanique, cette évolution cristallographique lui confère une dureté très élevée (1200Hv) ainsi qu'une bonne résistance aux sollicitations mécaniques (700Mpa en traction et 2000Mpa en compression). Une fois polie, la zircone tétragonale peut atteindre un Ra de 0,02, ce qui permet de l'utiliser pour des pièces de frottement.Index. décimale : 667.9 Revêtements et enduits Résumé : Hydroxyl acrylate emulsion was prepared firstly by the semicontinuous seeded emulsion polymerization, and then adding polyaniline (PANI)/Cu/ZrO2 ternary nanocomposites, two-component waterborne polyurethane (2 K WPU) composite coatings with antistatic and antibacterial properties were obtained by mixing the emulsion with hydrophilic modified polyisocyanate. The structure and morphology of the PANI/Cu/ZrO2 were observed by Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray diffractometer. The thermal, antistatic, antibacterial, anticorrosion, and mechanical properties of the 2 K WPU composite coatings were determined. The results showed that the addition of the ternary nanocomposites increased the antistatic, antibacterial, anticorrosion, and mechanical properties of the 2 K WPU coating. The initial decomposition temperature increased from 200 to 225°C, and the tensile strength increased by 44.4%. The coatings still maintained good impact strength of 50/50 kg cm, adhesion of grade 2, flexibility of 1 mm, pendulum hardness of 293 s, and the gloss (60°) of 119.4. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of PANI/Cu and PANI/Cu/ZrO 2 nanocomposites - Preparation of hydroxyl acrylate emulsion - Preparation of 2 K WPU film - Preparation of antibacterial and antistatic - 2 K WPU coatings - Preparation of culture medium - Characterization - Determination of surface electric resistance - Qualitative antibacterial test - Quantitatively antibacterial test - Coating anticorrosion resistance testing - Tinplate surface analysis - Adhesion, pendulum hardness, impact resistance, and gloss of films testing - Mechanical properties test
- RESULTS AND DISCUSSION : FTIR - SEM images - XRD - Thermogravimetric analysis (TGA) - Antistatic property - Antibacterial property - Anticorrosion performance of the composite coatings - Coating performance of 2 K WPU composite
- Table 1 : Effect of PANI/Cu/ZrO2 content on film performance of 2 K WPUDOI : https://doi.org/10.1007/s11998-022-00708-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00708-9.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39434
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Code-barres Cote Support Localisation Section Disponibilité 24069 - Périodique Bibliothèque principale Documentaires Disponible Application of acrylic resin coating agent modified by nano SiO2 / Ma Jianzhong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 5 (09-10/2006)
[article]
Titre : Application of acrylic resin coating agent modified by nano SiO2 Type de document : texte imprimé Auteurs : Ma Jianzhong, Auteur ; Zhang Zhijie, Auteur ; Liu Lingyun, Auteur ; Hu Jing, Auteur Année de publication : 2006 Article en page(s) : p. 188-192 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Air
Composites
Cuir -- Nettoyage
Cuirs et peaux -- Finition
Cuirs et peaux -- Propriétés mécaniques
Dioxyde de silicium
Formulation (Génie chimique)
Nanoparticules
Perméabilité
Polyacryliques
Résistance à l'abrasion
Revêtements organiques
Vapeur d'eauIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : An acrylic resin and an acrylic-resin/nano-SiO2 composite prepared as coating agents were applied in leather finishing and various properties of the finished leathers were determined. The results show that the physicalmechanical properties and cleaning properties of the leather samples finished with the acrylic-resin/nano-SiO2 composite increase noticeably. As examples, water vapour penetration and air permeability improved by 11.5% and 15.4%, dry rub fastness and folding strength [flexing] of the leather finished with the composite resin were also, to a degree, superior to that finished by the acrylic resin. The surface morphology observed by SEM (scanning electron microscope-energy spectrum of X-ray analysis) and AFM (atomic force microscope) indicated that the surface of the leather finished with the composite resin is smoother than that of leathers finished with the acrylic resin. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Instruments - Synthesis of nano composite acrylic resin - Application in leather finishing - Tests of the finished leather’s performances
- RESULTS AND DISCUSSION : Air permeability of the finished leathers - Water vapour penetration of the finished leathers - Dry and wet rub fastness of the finished leather samples - Folding endurance - Observation of the finished leathers by SEM-EDS - Observation of the finished leathers by AFM
- Table 1 : The formulae for finishing
- Table 2 : Air permeability of different leather samples
- Table 3 : Water vapour penetration of different leather samples
- Table 4 : Grades of dry and wet rub fastnessEn ligne : https://drive.google.com/file/d/1JicRME_BV_7V1HagPpLnWEYMWD296N8a/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39054
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 5 (09-10/2006) . - p. 188-192[article]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 Application of fringe field capacitance sensor for the study of water permeation in organic coatings / K. A. Thomas in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 5 (09/2016)
[article]
Titre : Application of fringe field capacitance sensor for the study of water permeation in organic coatings Type de document : texte imprimé Auteurs : K. A. Thomas, Auteur ; Shiny Nair, Auteur ; A. V. Ramesh Kumar, Auteur ; V. Natarajan, Auteur ; Reji John, Auteur Année de publication : 2016 Article en page(s) : p. 829-835 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Capteurs (technologie)
Perméation
Revêtements -- Analyse:Peinture -- Analyse
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Water permeation in organic coatings can be monitored by measuring the capacitance change in coatings. A new method of measuring water content in organic coatings using a miniature fringe field capacitance (FFC) sensor is described in this paper. The FFC sensor comprises two planar interdigitated electrodes on a dielectric substrate which is connected to a measuring circuit. Coating capacitance is measured by measuring the sensor capacitance when it is in contact with the surface of the coating. Sensor capacitance is theoretically calculated based on IDC capacitor theory for various sensor geometrical parameters at different water ingression levels in the coating. The computed sensor capacitance is validated with experimental values of five miniature sensors which are fabricated by lithography. The calibrated FFC sensor is used to monitor the water permeation profile in the coating, and the results are compared with that of electrochemical impedance spectroscopy technique. The technique provides scope for developing a portable, hand-held, and noninvasive technique to measure water permeation in organic coatings in the field. Note de contenu : - APPLICATION OF FFC SENSOR FOR MEASURING WATER CONTENT IN THE COATING : THEORETICAL STUDY
- FABRICATION OF SENSOR AND VALIDATION OF THEORY : Sensor fabrication - Experimental validation of theory
- WATER PERMEATION STUDY IN THE COATINGDOI : 10.1007/s11998-016-9795-3 En ligne : http://link.springer.com/content/pdf/10.1007%2Fs11998-016-9795-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27122
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Code-barres Cote Support Localisation Section Disponibilité 18316 - Périodique Bibliothèque principale Documentaires Disponible Application of impedance imaging to evaluation of organic coating degradation at a local scale / M. Szocinski in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 1 (01/2013)
[article]
Titre : Application of impedance imaging to evaluation of organic coating degradation at a local scale Type de document : texte imprimé Auteurs : M. Szocinski, Auteur ; K. Darowicki, Auteur ; K. Schaefer, Auteur Année de publication : 2013 Article en page(s) : p. 65-72 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Evaluation
Microscopie à force atomique
Polyacryliques
Polymères
Revêtements -- Analyse
Revêtements -- Détérioration
Revêtements organiques
Spectroscopie d'impédance électrochimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : A new approach for evaluating the local electrical properties of organic coatings has been proposed. It was performed with contact mode atomic force microscopy (AFM). A current response signal was measured when a single-frequency voltage perturbation was applied between AFM tip and coated metal. Suitability of the proposed technique has been presented on the representative acrylic coating degraded by two different factors—UV radiation and electrolyte exposure. It was possible to disclose the early stages of the coating deterioration, to spatially localize defective regions, and to observe distinctly different modes of the coating degradation as a result of exposure to various degradation factors. DOI : 10.1007/s11998-012-9458-y En ligne : http://link.springer.com/article/10.1007/s11998-012-9458-y/fulltext.html Format de la ressource électronique : Html Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17473
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