Preparation of Aqueous Graphene Oxide/Epoxy Resin Composite Emulsion and Its Anticorrosivity

被引：0
|
作者：
Yuan C. [1 ,2 ]
Tong X. [1 ]
Wang X. [1 ]
Zhang X. [1 ]
Su J. [1 ]
Yao F. [1 ,2 ]
Guo R. [1 ,2 ]
An Y. [2 ]
机构：
[1] School of Chemical Engineering and Technology, Tianjin University, Tianjin
[2] Tianjin University-UCGM Joint Research Center for Graphene Application, Tianjin
来源：
Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2020年 / 53卷 / 12期
关键词：
Anticorrosion; Epoxy resin; Graphene oxide; Waterborne coating;
D O I：
10.11784/tdxbz201911009
中图分类号：
学科分类号：
摘要：
In this study, we prepared a stable aqueous graphene-oxide modified-epoxy-resin(GO/EP)composite emulsion using the phase transformation method. Given the large amount of oxygen-containing functional groups on its surface, GO was easily and uniformly dispersed in the EP emulsion. In addition, the sheet structure of GO inhibits corrosion by blocking the corrosive medium to the interior of the coating. The results of stability and water absorption tests indicated that the storage stability of the prepared GO/EP composite emulsion was longer than one year, and the water adsorbed by the cured film was reduced to 6% compared to the 11% reduction of the unmodified film. The GO/EP composite film exhibited good adhesion to stainless steel, reaching the ASTM 5B(ISO 0)level. Moreover, the electrochemical test results revealed that the equivalent resistance of the GO/EP composite film increased markedly, capacitance reduced by 44%, annual corrosion rate reduced by 92%, and the protection efficiency was close to 99%. Based on these results, the prepared GO/EP composite emulsion shows great potential for use in aqueous anticorrosive paints. © 2020, Editorial Board of Journal of Tianjin University(Science and Technology). All right reserved.
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页码：1314 / 1320
页数：6
相关论文
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