Improving activity and barrier properties of epoxy modified polyurethane coating with in-situ polymerized polypyrrole functionalized graphene oxide

被引：4
作者：
Yue Sun
Dalei Song
Jing Yu
Jiahui Zhu
Jingyuan Liu
Rongrong Chen
Qi Liu
Peili Liu
Jun Wang
机构：
[1] Harbin Engineering University,College of Materials Science and Chemical Engineering
来源：
Surface Science and Technology | / 1卷 / 1期
关键词：
Non-hazardous nanocontainer; Graphene oxide; Polypyrrole; Self-healing; Corrosion protection;
D O I：
10.1007/s44251-023-00010-9
中图分类号：
学科分类号：
摘要：
The limited dispersibility and lack of active anti-corrosion properties of graphene oxide (GO) have hindered its application in corrosion resistance. In this study, we graft the corrosion inhibitor benzotriazole (BTA) on the surface of GO to achieve pH response release, providing active corrosion protection for epoxy modified polyurethane (EP-PU) coating. An environmentally friendly composite material with a sandwich-like structure was synthesized by in-situ polymerization of pyrrole to improve GO dispersion and prevent rapid release of BTA. The electrochemical impedance spectroscopy (EIS) shows that adding 0.15% GBP enhances the coating's anti-corrosion performance. The dual functions of passive and active corrosion enable the GBP/EP-PU coating to provide long-term corrosion protection for metal substrates.
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