含磺化聚苯胺的富锌环氧涂层在3.5%氯化钠溶液中的防腐性能

Anticorrosive behavior of a zinc-rich epoxy coating containing sulfonated polyaniline in 3.5% NaCl solution.

作者信息

Yang Feng, Liu Tong, Li Jingyu, Qiu Shihui, Zhao Haichao

机构信息

Shenyang University of Chemistry and Technology, School of Materials Science and Engineering Shenyang 110142 P. R. China.

Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences Ningbo 315201 P. R. China

出版信息

RSC Adv. 2018 Apr 10;8(24):13237-13247. doi: 10.1039/c8ra00845k. eCollection 2018 Apr 9.

DOI:10.1039/c8ra00845k

PMID:35542541

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9079730/

Abstract

An epoxy zinc-rich composite coating containing self-doped conducting sulfonated polyaniline (SPANi) nanofiber was prepared and the corrosion resistance of as-prepared coatings on Q235 substrate studied by open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) and scanning vibrating electrode technique (SVET). Results suggested that a zinc-rich coating with addition of 1.0 wt% SPANi could enhance the cathodic protection time and barrier performance. To study corrosion diffusion, artificial scratch and adhesion strength were investigated the salt spray test and pull-off test, respectively. Finally, the passivating action of coatings was demonstrated by analyses of corrosion products X-ray diffraction spectroscopy.

摘要

制备了一种含有自掺杂导电磺化聚苯胺（SPANi）纳米纤维的环氧富锌复合涂层，并通过开路电位（OCP）、电化学阻抗谱（EIS）和扫描振动电极技术（SVET）研究了在Q235基体上制备的涂层的耐腐蚀性。结果表明，添加1.0 wt% SPANi的富锌涂层可以延长阴极保护时间并提高屏蔽性能。为了研究腐蚀扩散，分别通过盐雾试验和拉开试验研究了人工划痕和附着力。最后，通过X射线衍射光谱对腐蚀产物的分析证明了涂层的钝化作用。