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

作　　者：Yue Sun Dalei Song Jing Yu Jiahui Zhu Jingyuan Liu Rongrong Chen Qi Liu Peili Liu Jun Wang 

机构地区：[1]College of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin 150001,China

出　　处：《Surface Science and Technology》2023年第1期212-225,共14页表面科学技术(英文)

基　　金：supported by the National Natural Science Foundation of China(NSFC 22106033);Fundamental Research Funds of the Central University,and Heilongjiang Touyan Innovation Team Program.

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.

关 键 词：Non-hazardous nanocontainer Graphene oxide POLYPYRROLE Self-healing Corrosion protection 

分 类 号：TG1[金属学及工艺—金属学]