Background

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.

Methods

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.

Significant findings

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.

中文翻译：

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磺化苯胺三聚体改性玄武岩垢防腐涂料的防腐性能及催化钝化、吸附缓蚀自愈

背景

玄武岩薄片（BS）是一种具有高强度和硬度、化学惰性、耐酸碱的新型天然层状材料。有望成为优良的防腐涂料填料。BS与聚合物树脂相容性差，限制了其应用。

方法

通过共价接枝和氢键吸附实现磺化苯胺三聚体（SAT）对BS的改性。通过光谱和能谱、电化学实验、量子化学和分子动力学的理论方法研究了材料的结构和功能。

重要发现

SAT的改性促进了BS与聚合物的相容性。BS 的稳定分散归因于通过 SAT 的共价锚定。这种促进作用是通过涂层对腐蚀介质的屏蔽能力来评估和确认的。氢键合SAT对钢具有pH响应释放和催化钝化和缓蚀作用，其在涂层缺陷处的释放赋予了自修复作用。其机理是形成致密的氧化膜和SAT吸附膜。