| Titre : |
Enhanced corrosion resistance and weathering resistance of waterborne epoxy coatings with polyetheramine-functionalized graphene oxide |
| Type de document : |
texte imprimé |
| Auteurs : |
Jing Li, Auteur ; Wenwen Chan, Auteur ; Jincan Cui, Auteur ; Hanxun Qiu, Auteur ; Guangzhi Yang, Auteur ; Shiyou Zheng, Auteur ; Junhe Yang, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 171-180 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Anticorrosifs
Anticorrosion
Caractérisation
Epoxydes
Greffage (chimie)
Oxyde de graphène
Polymères en émulsion
Résistance aux conditions climatiques
Revêtements -- Détérioration
Revêtements -- Effets du rayonnement ultraviolet
Revêtements en phase aqueuse
Revêtements organiques
Revêtements protecteurs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Polyetheramine (D230), an epoxy curing agent, was grafted on graphene oxide (GO) surfaces, which can be stably dispersed in a waterborne curing agent for more than 8 months. Waterborne epoxy coatings reinforced by D230-functionalized GO (DGO) were prepared on carbon steel surfaces. According to the electrochemical impedance spectra, the impedance modulus at 0.1 Hz remained at 2.2 × 109 Ω after 150 days of immersion in 3.5% NaCl electrolytes for 0.2 wt% DGO-reinforced waterborne epoxy coatings, while that of the neat epoxy coatings dropped below 1 × 107 Ω after 10 days. Besides, the addition of DGO enhanced the weathering resistance of waterborne epoxy coatings. After 60 days of the UV aging test, the yellow color index of neat epoxy coatings was 1.6 times that of 0.5 wt% DGO/epoxy coatings. The residual pencil hardness of the 0.5 wt% DGO/epoxy coatings was three levels higher than that of neat epoxy coatings. |
| Note de contenu : |
- EXPERIMENTAL : Preparation of DGO - Preparation of the DGO/epoxy composite coatings - Characterizations
- RESULTS AND DISCUSSION : Functionalization of GO - Morphologies of the DGO/epoxy coatings - Corrosion protection properties of the DGO/epoxy coatings - Weathering resistance of the DGO/epoxy coatings |
| DOI : |
10.1007/s11998-019-00252-z |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-019-00252-z.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33736 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 1 (01/2020) . - p. 171-180
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