Understanding the role of silane pretreatments in an organic coating system. Part 1: corrosion performance and interfacial property / Xao-Xin Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 3 (05/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 3 (05/2019) . - p. 881-893 Titre : Understanding the role of silane pretreatments in an organic coating system. Part 1: corrosion performance and interfacial property Type de document : texte imprimé Auteurs : Xao-Xin Wang, Auteur ; Yun-Qing Cao, Auteur ; Hong-Li Fu, Auteur ; Mei-Yan Jiang, Auteur ; Ji-Ming Hu, Auteur Année de publication : 2019 Article en page(s) : p. 881-893 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs Anticorrosion Interfaces (Sciences physiques) Réaction de couplage Revêtements organiques Silanes Index. décimale : 667.9 Revêtements et enduits Résumé : This work aimed at understanding the role of silane pretreatment layer in an organic coating system. The study consists of two parts. In the first part, the anticorrosion performance and interfacial property of silane-pretreated epoxy coatings were studied. The results showed that pretreatment with functional 3-glycidoxypropyl-trimethoxysilane (GPTMS) strongly improves the adhesion of epoxy-coated AA2024-T3 aluminum alloy due to the high interfacial compatibility between silane and epoxy coatings and that pretreatment with nonfunctional bis-1,2-[triethoxysilyl]ethane (BTSE) remarkably reduces the adhesion to the alloy because of low compatibility. Nevertheless, the BTSE film provides higher resistance to corrosion than the GPTMS-pretreated coating system, because the former is more hydrophobic and thicker. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials and chemicals - Sample preparation - Characterization - Corrosion assessments - RESULT : Corrosion performance - Interfacial characterization DOI : 10.1007/s11998-018-00164-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-00164-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32599 [article]

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Understanding the role of silane pretreatments in an organic coating system. Part 2: a study of molecular dynamics simulation / Xao-Xin Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 4 (07/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 4 (07/2019) . - p. 971-981 Titre : Understanding the role of silane pretreatments in an organic coating system. Part 2: a study of molecular dynamics simulation Type de document : texte imprimé Auteurs : Xao-Xin Wang, Auteur ; Hong-Li Fu, Auteur ; Mei-Yan Jiang, Auteur ; Ying-Chun Liu, Auteur ; Ji-Ming Hu, Auteur Année de publication : 2019 Article en page(s) : p. 971-981 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion Chimie des surfaces Dynamique moléculaire Hydrophobie Métaux -- Revêtements protecteurs Réaction de couplage Revêtements organiques Revêtements:Peinture Silanes Simulation par ordinateur Index. décimale : 667.9 Revêtements et enduits Résumé : In the second part of this work, silane-pretreated epoxy coatings on aluminum substrate are theoretically studied by molecular dynamics simulation. The results show that (3-glycidoxypropyl)-trimethoxysilane (GPTMS) provides improved interaction energy for aluminum and epoxy interface and thus ensures satisfactory adhesion. Water diffuses fastest and slowest across the interface of bis-1,2-(triethoxysilyl)ethane (BTSE)- and GPTMS-pretreated painting systems, respectively, suggesting that BTSE has the worst and GPTMS provides the best capability for constructing a reliable interface among the selected painting systems. The existence of both silane pretreatments improves the resistance of structure relaxation of the epoxy polymer chain to water penetration. Note de contenu : - SIMULATION METHOD : Models - Simulation details - RESULTS AND DISCUSSION : The interaction energy - The concentration profiles of components - Water diffusion coefficients and mobility of the epoxy chain DOI : 10.1007/s11998-019-00183-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00183-9.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32854 [article]

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