Yue Sun, Dalei Song, Jing Yu, Jiahui Zhu, Jingyuan Liu, Rongrong Chen, Qi Liu, Peili Liu, Jun Wang
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Improving activity and barrier properties of epoxy modified polyurethane coating with in-situ polymerized polypyrrole functionalized graphene oxide
Abstract 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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The Indian Society for Surface Science and Technology is an organization for the cultivation, interaction and dissemination of knowledge in the field of surface science and technology. It also strives to promote Industry-Academia interaction
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