原位聚合聚吡咯功能化氧化石墨烯改善环氧改性聚氨酯涂料的活性和阻隔性能

Q4 Materials Science

Journal of Surface Science and Technology Pub Date : 2023-10-18 DOI:10.1007/s44251-023-00010-9

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

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引用次数: 0

摘要

摘要氧化石墨烯(GO)的分散性有限，缺乏有效的抗腐蚀性能，阻碍了其在耐腐蚀领域的应用。在本研究中，我们将缓蚀剂苯并三唑(BTA)接枝到氧化石墨烯表面，实现pH响应释放，为环氧改性聚氨酯(EP-PU)涂层提供有效的防腐保护。通过原位聚合吡咯，合成了一种具有三明治状结构的环保型复合材料，以改善氧化石墨烯的分散性，防止BTA的快速释放。电化学阻抗谱(EIS)分析表明，添加0.15% GBP能提高涂层的防腐性能。被动和主动腐蚀的双重功能使GBP/EP-PU涂层能够为金属基材提供长期的防腐保护。

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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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来源期刊

Journal of Surface Science and Technology PHYSICS, APPLIED-

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期刊介绍： 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