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Facile fabrication of superhydrophilic and underwater superoleophobic chitosan–polyvinyl alcohol-TiO2 coated copper mesh for efficient oil/water separation / Qiuying You in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 5 (09/2018)
[article]
Titre : Facile fabrication of superhydrophilic and underwater superoleophobic chitosan–polyvinyl alcohol-TiO2 coated copper mesh for efficient oil/water separation Type de document : texte imprimé Auteurs : Qiuying You, Auteur ; Guoxia Ran, Auteur ; Chan Wang ; Yuan Zhao ; Qijun Song Année de publication : 2018 Article en page(s) : p. 1013-1023 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alcool polyvinylique
Anticorrosion
ChitosaneLe chitosane ou chitosan est un polyoside composé de la distribution aléatoire de D-glucosamine liée en ß-(1-4) (unité désacétylée) et de N-acétyl-D-glucosamine (unité acétylée). Il est produit par désacétylation chimique (en milieu alcalin) ou enzymatique de la chitine, le composant de l'exosquelette des arthropodes (crustacés) ou de l'endosquelette des céphalopodes (calmars...) ou encore de la paroi des champignons. Cette matière première est déminéralisée par traitement à l'acide chlorhydrique, puis déprotéinée en présence de soude ou de potasse et enfin décolorée grâce à un agent oxydant. Le degré d'acétylation (DA) est le pourcentage d'unités acétylées par rapport au nombre d'unités totales, il peut être déterminé par spectroscopie infrarouge à transformée de Fourier (IR-TF) ou par un titrage par une base forte. La frontière entre chitosane et chitine correspond à un DA de 50 % : en deçà le composé est nommé chitosane, au-delà , chitine. Le chitosane est soluble en milieu acide contrairement à la chitine qui est insoluble. Il est important de faire la distinction entre le degré d'acétylation (DA) et le degré de déacétylation (DD). L'un étant l'inverse de l'autre c'est-à -dire que du chitosane ayant un DD de 85 %, possède 15 % de groupements acétyles et 85 % de groupements amines sur ses chaînes.
Le chitosane est biodégradable et biocompatible (notamment hémocompatible). Il est également bactériostatique et fongistatique.
Le chitosane est également utilisé pour le traitement des eaux usées par filtration ainsi que dans divers domaines comme la cosmétique, la diététique et la médecine.
Cuivre
Hydrophilie
Maille métallique
Membranes (technologie)
Mouillabilité
Nanoparticules
Oléophobie
Résistance à l'abrasion
Séparation huile/eauIndex. décimale : 667.9 Revêtements et enduits Résumé : Organic–inorganic hybrid membranes are attractive material for oil/water separation. Here, a hydrophilic and oleophobic membrane was prepared by coating chitosan (CTS) and polyvinyl alcohol (PVA) on the surface of copper mesh using glutaraldehyde (GA) as crosslinking agent. After introduction of TiO2 nanoparticles, the surface roughness of the composite film was increased and a superhydrophilicity and underwater superoleophobicity surface was obtained due to the enhancement in wettability. The as-prepared superhydrophilic membrane was characterized by SEM, FTIR, XRD, and its surface wetting behavior was measured by contact angle meter. The effect of CTS, PVA, GA, and TiO2 on the microstructure, underwater oil contact angle, and sliding angle was comprehensively evaluated. Then, the super hydrophilic membrane was used for oil/water separation, a separation efficiency (> 99.7%) was obtained with a flux rate of 16,000 L m−2 h−1. The intrusion pressures for all tested oils that the membrane can support are above 1.0 kPa. Significantly, the super hydrophilic membrane exhibited good antiabrasion and anticorrosive properties. After repeated use for 60 times, the separating performances and average permeate fluxes showed no obvious degradation. Note de contenu : - EXPERIMENTAL SECTION : Chemicals and materials - Fabrication of CTS-PVA-TiO2 coated copper mesh - Instruments and methods - Oil/water separation experiment
- RESULTS AND DISCUSSION : Components and morphology of coated mesh - Surface wettability of coated mesh - Oil/water separation experiments - Stability and anticorrosive property of coated meshDOI : 10.1007/s11998-017-0036-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-0036-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31125
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Code-barres Cote Support Localisation Section Disponibilité 20232 - Périodique Bibliothèque principale Documentaires Disponible Facile fabrication of superhydrophobic nanocomposites coating materials using nanoemulsion polymerization technique and its application for protecting the petroleum carbon steel pipelines / M. R. Noor El-Din in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 1 (01/2023)
[article]
Titre : Facile fabrication of superhydrophobic nanocomposites coating materials using nanoemulsion polymerization technique and its application for protecting the petroleum carbon steel pipelines Type de document : texte imprimé Auteurs : M. R. Noor El-Din, Auteur ; A. I. Hashem, Auteur ; R. E. Morsi, Auteur ; A. Abd El-Azeim, Auteur ; Reham H. Mohamed, Auteur Année de publication : 2023 Article en page(s) : p. 291-305 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier au carbone
AcierL'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
Copolymère styrène acétate de vinyle
Dioxyde de silicium
Dip-coating
Fourier, Spectroscopie infrarouge à transformée de
Hydrophobie
Lumière -- Diffusion
Métaux -- Revêtements protecteurs
Nanoémulsions
Nanoparticules
Polymérisation en émulsion
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : This paper aims to fabricate new superhydrophobic nanocomposite coating materials to protect the inner surfaces of the petroleum pipelines from corrosion. The batch emulsification polymerization technique (BEM) was used as a facial eco-friendly technique to prepare three hydrophobic (styrene/vinyl acetate) copolymers. The sol–gel method was used to prepare SiO2 nanoparticles (SiO2-NPs) with average size ranging from 90 to 101 nm. The functionalized SiO2-NPs were prepared using hexadecyl trimethoxy silane (HDTS) as a precursor to increasing the hydrophobicity character of the unfunctionalized SiO2-NPs. Three superhydrophobic [(styrene/vinyl acetate copolymer/functionalized SiO2 nanoparticles (SiO2NPs)] nanocomposites denoted as M1, M3, and M5 were fabricated by incorporating 1, 3, and 5 wt% of the functionalized-SiO2NPs into the styrene/vinyl acetate copolymer, respectively. The effectiveness of the fabricated nanocomposite coating materials was analyzed using contact angle measurement and transmission electron and atomic force microscopies. The results showed that the highest contact angle of 161.21o was obtained by M5-nanocomposite. The highest corrosion efficiency of 99.63% was obtained at 300 ppm concentration of M5-nanocomposite-coated solution, 298 K, and 24 days. Note de contenu : - MATERIALS AND METHODS : Materials - Petroleum produced water - Methods
- RESULTS AND DISCUSSION : FTIR spectroscopy analysis of C3-copolymer - Dynamic light scattering (DLS) measurements - Preparation of unfunctionalized Si2O-NPs - Fabrication of superhydrophobic nanocomposites - Assessment of the coated coupons as anticorrosion material
- Table 1 : Contact angle (θ) measurements of uncoated and coated carbon steel with (C3-copolymer), (E-silicate), and (M1-, M2-, M3-composites) at different concentrations of E-silicate as (0), (3), and (1, 3, and 5) wt %, respectively
- Table 2 : Inhibition efficiency (η) and the corrosion rate of uncoated and coated coupons for C3-copolymer and M5-composite concentration of 100 ppm and (100, 200, and 300 ppm), respectively, 298 K, and 24 days
- Table 3 : Activation energy (Ea) of uncoated and coated carbon steel coupons with C3-copolymer and M5-composite at 0, 100, and 100 ppm, respectively, and different temperatures of 298, 313 and 333 KDOI : https://doi.org/10.1007/s11998-022-00669-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00669-z.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38843
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Code-barres Cote Support Localisation Section Disponibilité 23928 - Périodique Bibliothèque principale Documentaires Disponible Facile preparation of anticorrosive and decorative multifunctional coatings via the inclusion of pearlescent oxide-covered mica pigments / Walaa M. Abd El-Gawad in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)
[article]
Titre : Facile preparation of anticorrosive and decorative multifunctional coatings via the inclusion of pearlescent oxide-covered mica pigments Type de document : texte imprimé Auteurs : Walaa M. Abd El-Gawad, Auteur ; Essam A. Mossalam, Auteur ; Mohamed M. Selim, Auteur Année de publication : 2023 Article en page(s) : p. 603-622 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Arrachement (matériaux)
Brillance (optique) -- Mesure
Caractérisation
Colorimétrie
Epoxydes
Evaluation
Formulation (Génie chimique)
Mica
Oxydes métalliques
Pigments nacrés
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements décoratifs
Revêtements décoratifs:Peinture décorative
Revêtements organiques
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : The keynote of this work was to prepare cost-saving intensely colored pearlescent pigments with anticorrosive properties via deposition of a low ratio of expensive mixed oxides on mica to be applied in decorative and anticorrosive multifunctional coatings. Herein, a mixture of CeO2 and Fe2O3 was precipitated on mica to prepare anticorrosive pigment with golden color, while brilliant intensive orange pigment was prepared via the deposition of ZrO2.Fe2O3 mix on mica. The prepared pearlescent pigments based on mica flakes covered with CeO2.Fe2O3 and ZrO2.Fe2O3 were characterized using scanning electron microscopy, energy-dispersive X-ray analysis, X-ray fluorescence, and thermal gravimetric analysis. The mixed oxide-covered mica pigments (Ce-Fe@M and Zr-Fe@M) were applied in two paint formulations in addition to one formulation containing mica for comparison. The color of the resulting coatings was investigated utilizing the CIELab technique. Additionally, the inhibitive properties of the coatings were determined using potentiodynamic anodic polarization, open circuit voltage, linear polarization resistivity, and electrochemical impedance spectroscopy techniques. The results declared that the color of the coating containing CeO2.Fe2O3@M is gold and that of ZrO2.Fe2O3/M is brilliant orange. Moreover, the results deduced that the resistance of coating containing Ce-Fe@M ranged between (5061–4887 Ω) and that containing Zr-Fe@M is from 6846 to 3290 Ω, while coating based on mica is the least. These results revealed that the present study has succeeded in offering both anticorrosive and decorative functions in a single-layered coat. Note de contenu : - EXPERIMENTAL : Materials - Characterization of the prepared pigments - Application in coatings - Methods of testing and evaluation of coating
- RESULTS AND DISCUSSION : Pigments characterization - FTIR - Coatings morphology - Corrosion results - Color and gloss measurements - Mechanical properties of the coatings - Pull-off strength results
- Table 1 : The paint formulations
- Table 2 : XRF analysis of mica, Ce-Fe@M, and Zr-Fe@M
- Table 3 : Corrosion resistance of the coatings containing mica, Ce-Fe@M, and Zr-Fe@M
- Table 4 : Electrochemical measurements results obtained from potentiodynamicanodic polarization and OCV technique
- Table 5 : EIS data of the coatings containing mica, Ce-Fe@M, and Zr-Fe@MTable 6 Color and gloss results of coatings containing mica, Ce-Fe@M, and Zr-Fe@MDOI : https://doi.org/10.1007/s11998-022-00693-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00693-z.pdf?pdf=button Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39306
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Code-barres Cote Support Localisation Section Disponibilité 24056 - Périodique Bibliothèque principale Documentaires Disponible Factors influencing the interlayer adhesion in the CED primer/waterborne coating system / Natalia Vlasova in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4654 (09/2019)
[article]
Titre : Factors influencing the interlayer adhesion in the CED primer/waterborne coating system Type de document : texte imprimé Auteurs : Natalia Vlasova, Auteur ; Valentina Miloslavskaya, Auteur ; Larisa Sakharova, Auteur ; Viktor Ozhiganov, Auteur ; Evgenii Indeikin, Auteur Année de publication : 2019 Article en page(s) : p. 29-30 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion
Anticorrosifs
Anticorrosion
Copolymère mélamine-formaldéhyde
Copolymère uréthane époxy
MélamineLa mélamine, de nom chimique 1,3,5-triazine-2,4,6-triamine, est parfois dénommée cyanuramide ou cyanurotriamine. Sa formule brute est C3H6N6.
Les "résines mélamine-formaldéhyde" ou "mélamine-formol" (sigle MF) sont appelées "mélamine" dans le langage courant. Elles font partie de la famille des aminoplastes qui regroupe des résines thermodurcissables aminées, issues d'un comonomère tel l'urée ou la mélamine, parfois le thiocarbamide, le cyanamide hydrogène ou le dicyandiamide ; le second comonomère étant le formaldéhyde.
Polyesters
Primaire (revêtement)
Réticulants
Revêtements en phase aqueuse -- Additifs
Revêtements protecteurs
Tension superficielleIndex. décimale : 667.9 Revêtements et enduits Résumé : The authors discusses a study of an epoxy urethane cathodic electrodeposition primer and polyester melamine paint, containing melamine-formaldehyde cross-linking agents with different alkylation degrees and types, as well as an acid catalyst for acceleration of the curing process.
Among the broad variety of anticorrosion coatings, cathodic electrodeposition (CED) primers have an undeniable superiority. Such primers are overcoated with weather resistant coatings to obtain weatherability and the necessary decorative properties. From the point of view of environmental safety and fire protection, waterborne stoving paints are of the highest interest, however, there is a risk of interlayer adhesion failure due to the primer layer over-drying. In the present work, epoxy urethane cathodic electrodeposition primer and polyester melamine paint, containing melamine-formaldehyde cross-linking agents with different alkylation degrees and types as well as an acid catalyst for acceleration of the curing process have been studied. The physical and chemical factors influencing the interlayer adhesion in the system consisting of epoxy urethane CED primer and polyester melamine waterborne stoving paint have been investigated and conditions under which a complete interlayer adhesion failure occurs have been determined.Note de contenu : - Materials and methods
- Waterborne coating crosslinking rate and degree
- CED primer/waterborne coating interlayer adhesion
- Interfacial energy properties
- Fig. 1 : Storage modulus vs time for the curing of the coatings with PMMM - 1 ; HMMM without a catalyst - 2 ; HMMM with 0.3%p-TSA - 3 and the temperature curve - 4
- Fig. 2 : Intertayer adhesion of the waterborne coating with PMMM (1) HMMM without the catalyst (2), HMMM with 0.3%p-TSA(3)to CED primer cured at 165°C for 15min. (a), at 165°C for 30min (b), at 180°C for 15min (c), at 180°C for 30min (d)
- Table 1 : Polyester coating MEK resistance
- Table 2 : MEK-resistance of CED primers
- Table 3 : Interlayer adhesion for different CED primer/waterborne coating systems
- Table 4 : Specific surface energy and its components for the CED primer surfaces
- Table 5 : Surface tension for liquid waterborne coatings
- Table 6 : Interfacial tension between the CED primer and the waterborne coatingEn ligne : https://drive.google.com/file/d/1EcybHljC3XOLsbF72p-bKBBpL1FHz8gY/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32918
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Code-barres Cote Support Localisation Section Disponibilité 21175 - Périodique Bibliothèque principale Documentaires Disponible Fast-drying high-solid systems for the mechanical engineering industry / Andreas Morlock in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 7, N° 3 (2014)
[article]
Titre : Fast-drying high-solid systems for the mechanical engineering industry Type de document : texte imprimé Auteurs : Andreas Morlock, Auteur ; Harald Kämpf, Auteur Année de publication : 2014 Article en page(s) : p. 14-15 Langues : Anglais (eng) Catégories : Anticorrosion
Economies d'énergie
Haut extrait sec
Polyuréthanes
Réduction des composés organiques volatils
Résistance chimique
Revêtement -- Séchage:Peinture -- Séchage
Revêtements bi-composant:Peinture bi-composantIndex. décimale : 667.9 Revêtements et enduits Résumé : New vertical coating system - A new two-component high-solid system, which was developed as part of a project for the mechanical engineering industry, not only lowers VOC emissions, but also significantly reduces the time and the energy needed to dry the coatings. Note de contenu : - Shortening throughput times with high-solid paint systems
- Good adhesion, corrosion protection and chemical resistance
- Energy reduction using convective dryingPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22384
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Code-barres Cote Support Localisation Section Disponibilité 16680 - Périodique Bibliothèque principale Documentaires Disponible Fast-drying paints for the mechanical engineering industry / Andreas Morlock in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 10, N° 2 (2017)
PermalinkFATIPEC 2008 / (FATIPEC) Fédération d'associations de techniciens des industries des peintures, vernis, émaux et encres d'imprimerie de l'Europe continentale / Paris : FATIPEC (2008)
PermalinkField application of foul-release coating / Sang Ki Chi in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 31, N° 6 (06/2014)
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PermalinkFighting rust with acrylic dispersions / Daniel Flojhar in EUROPEAN COATINGS JOURNAL (ECJ), N° 5 (05/2022)
PermalinkPermalinkPermalinkFlakes versus dust in terms of sustainability / Peter WiBling in EUROPEAN COATINGS JOURNAL (ECJ), (10/2023)
PermalinkFlexible colour concepts for decorative and industrial applications / Mark Westera in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 201, N° 4561 (06/2011)
PermalinkFlexible pre-treatment system for agricultural and construction machinery / Thomas Vortmüller in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 8, N° 2 (2015)
PermalinkFluoropolymers for high-performance applications / Bob Parker in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 30, N° 2 (02/2013)
PermalinkA focus on tension / André Fackiner in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 8, N° 2 (2015)
PermalinkForm meets function / Heiko Viecenz in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 5, N° 1 (2012)
PermalinkFormulation and characterization of hybrid polymeric/ZnO nanocomposite coatings with remarkable anti-corrosion and hydrophobic characteristics / Sh. Ammar in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 5 (09/2016)
PermalinkFormulation and study of corrosion prevention behavior of epoxy cerium nitrate-montmorillonite nanocomposite coated carbon steel / E. Darmiani in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 4 (07/2013)
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