三聚体
腐蚀
钝化
苯胺
材料科学
吸附
共价键
化学工程
涂层
聚合物
环氧树脂
化学
复合材料
有机化学
图层(电子)
二聚体
工程类
作者
Qing‐xian Yue,Jing Lv,Liang Xuan,Wang Yu-yu,Rui Ding,Li Yu,Jiahao Deng,Peng Han,Hanxi Yang,Sun Tian-Zi,Li Sun,Xian Jin-Ping,Lingjiang Kong,Wang Xiang-Yuan,Yu Huang,Wang Xiao,Taijiang Gui,Weihua Li
标识
DOI:10.1016/j.jtice.2021.11.023
摘要
Basalt flake (BS) was the new type of natural lamellar material with high strength and hardness, chemical inertia, acid and alkali resistance. It was expected to be the excellent anti-corrosion coating filler. The poor compatibility between BS and polymer resin limited its application. The modification of BS by sulfonated aniline trimer (SAT) was realized by covalent grafting and hydrogen bond adsorption. The structure and function of the materials were studied through spectrum and energy spectrum, electrochemical experiments, theory methods of quantum chemistry and molecular dynamics. The modification of SAT promoted the compatibility of BS and polymer. The stable dispersion of BS was attributed to covalent anchoring via SAT. This promoting effect was evaluated and confirmed by the shielding ability of coatings to corrosive media. Hydrogen bonded SAT behaved pH responsive release and catalytic passivation and corrosion inhibition on steel, and its release at coating defects endowed the self-healing effect. The mechanism was the formation of dense oxide films and SAT adsorption films.
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