Effect of boron nitride modified by sodium tripolyphosphate on the corrosion resistance of waterborne epoxy coating

IF 2.3 4区材料科学 Q2 Chemistry

Journal of Coatings Technology and Research Pub Date : 2023-07-10 DOI:10.1007/s11998-022-00637-7

Hongrui Yao, Wenya Bi, Xu Yin, Shenglong Mu, Shiqiang Sha, Na Wang

引用次数: 0

Abstract

In this work, h-BN@STPP was successfully obtained by facile co-modification of sodium tripolyphosphate (STPP) and silane coupling agent (KH-550) on h-BN nanosheets, with waterborne epoxy coatings incorporated for metallic substrate corrosion protection. Results showed that the impedance modulus at the lowest frequency (Z_f ₌ _0.1 Hz) of h-BN@STPP composite coating increased three orders of magnitude in comparison with neat waterborne epoxy coating, exhibiting outstanding corrosion resistance. The reinforced anticorrosion performances of h-BN@STPP composite coatings could be attributed to the “labyrinth effect” of h-BN and passivation effect of STPP on the metal substrates.

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三聚磷酸钠改性氮化硼对水性环氧涂料耐腐蚀性能的影响

在这项工作中，通过三聚磷酸钠(STPP)和硅烷偶联剂(KH-550)在h-BN纳米片上的简单共改性，成功地获得了h-BN@STPP，并加入了水性环氧涂层来保护金属基体的腐蚀。结果表明:h-BN@STPP复合涂层在最低频率(Zf = 0.1 Hz)处的阻抗模量比纯水性环氧涂层提高了3个数量级，具有优异的耐腐蚀性能;h-BN@STPP复合涂层的增强防腐性能可归因于h-BN的“迷宫效应”和STPP对金属基体的钝化作用。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Coatings Technology and Research CHEMISTRY, APPLIED-MATERIALS SCIENCE, COATINGS & FILMS

CiteScore

4.40

自引率

8.70%

发文量

期刊介绍： Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.