Preparation of modified montmorillonite/graphene oxide composites to enhance the anticorrosive performance of epoxy coatings / Quanxian Hua in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 1110-1119 Titre : Preparation of modified montmorillonite/graphene oxide composites to enhance the anticorrosive performance of epoxy coatings Type de document : texte imprimé Auteurs : Quanxian Hua, Auteur ; Ben Jing, Auteur ; Mengyuan He, Auteur ; Panfei Sun, Auteur ; Qiang Zhao, Auteur ; Shilong Su, Auteur ; Guanjie Hu, Auteur ; Songjie Li, Auteur Année de publication : 2023 Article en page(s) : p. 1110-1119 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs Anticorrosion Caractérisation Composés organiques -- Synthèse Electrochimie Epoxydes Hydrophobie Montmorillonite Oxyde de graphène Réaction de couplage Revêtements organiques Silanes Index. décimale : 667.9 Revêtements et enduits Résumé : Modified montmorillonite/graphene oxide composites (AM@GO) were prepared by a hydrothermal method with silane coupling agent-modified montmorillonite (APTES@MMT) and combined with GO. The structures of the composites were characterized by FTIR, XRD, Raman spectroscopy, BET analysis, and SEM. The results showed that the composites had increased interlayer spacing and formed a loosely laminated stacked structure. The specific surface area (31.6863 m2/g) and pore volume (0.0104 cm3/g) of the composites increased. The hydrophobic and anticorrosive properties of the composite coatings were investigated and compared to the epoxy coating. The composite coatings (AM@GO/EP) had larger contact angles and smoother surfaces than the epoxy coating (EP). After 30 days of immersion, the value of |Z|0.01 Hz was approximately 1011 Ω cm2, which had changed slightly since initial immersion. Mechanistic analysis shows that the improved corrosion resistance of the composite coatings was due to the high specific surface area of the 2D material, the oxygen-containing groups of GO, the amino groups of APTES@MMT and the synergy between the MMT and the GO nanosheets. Note de contenu : - Materials - Synthesis of APTES@MMT(AM) - Synthesis of GO - Synthesis of AM@GO - Epoxy composite coating preparation - Electrochemical measurements - Structural characterization - Table 1 : Impedance values of different types of coatings under different immersion days DOI : https://doi.org/10.1007/s11998-022-00731-w En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00731-w.pdf?pdf=button% [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39451 [article]

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