| Titre : |
Highly dispersed graphene oxide–zinc oxide nanohybrids in epoxy coating with improved water barrier properties and corrosion resistance |
| Type de document : |
texte imprimé |
| Auteurs : |
Nurul Husna Othman, Auteur ; Wan Zaireen Nisa Yahya, Auteur ; Mokhtar Che Ismail, Auteur ; Mustapha Zi, Auteur ; Zi Kang Koi, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 101-114 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésion
Anticorrosifs
Anticorrosion
Epoxydes
Nanoparticules
Oxyde de graphène
Oxyde de zinc
Revêtements organiques
Revêtements protecteurs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Epoxy resin (EP) coating that prevents corrosion is subject to premature failure as its crosslinking network appears to be porous due to the presence of hollow spaces across the network, which leads to poor water barrier. This study introduces a novel approach of utilizing the stable surface property of zinc oxide (ZnO) to facilitate the dispersion of graphene oxide (GO) sheets in epoxy coating to improve water barrier and corrosion resistance properties. The ZnO nanoparticles (ZnO NPs) were decorated on GO sheets by using (3-aminopropyl)triethoxysilane as coupling agent. The GO-ZnO nanohybrids were successfully formed, as demonstrated in Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analyses. The GO-ZnO sheets were well dispersed in epoxy matrix with no significant agglomeration, as verified via field emission scanning electron microscopy with energy-dispersive X-ray spectroscopy. The decoration of GO with ZnO NPs expanded the spacing between GO sheets, as observed from the outcomes of X-ray diffraction analysis, which improved exfoliation and compatibility in epoxy matrix. Based on the investigations and characterization outputs, the well-dispersed GO-ZnO nanohybrids in the epoxy coatings had effectively improved water barrier properties, as well as adhesion and corrosion protection, in comparison with neat epoxy (EP) and GO–epoxy coatings.AAT |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Preparation of graphene oxide-zinc oxide (Go-ZnO) nanocomposite - Preparation of epoxy nanocomposite coating - Corrosion tests - Pull-off adhesion
- RESULTS AND DISCUSSION : Characterization of functionalized zinc oxide (APTES-ZnO) and GO-ZnO - Dispersion behavior of GO and GO-ZnO nanohybrids in solvent - Characterization of GO/EP and Go-ZnO/EP nanocomposites - Corrosion protection performance of EP? GO/EP, and GO-ZnO/EP coatings |
| DOI : |
10.1007/s11998-019-00245-y |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-019-00245-y.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33731 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 1 (01/2020) . - p. 101-114
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