Synergistic enhancement of self-healing and abrasion/corrosion resistance properties of marine anticorrosion coatings with SiO2 modified PA6 core shell nanofibers

IF 2.3 4区材料科学 Q2 CHEMISTRY, APPLIED

Journal of Coatings Technology and Research Pub Date : 2025-01-09 DOI:10.1007/s11998-024-01030-2

Yangbo Xu, Rulin Shen, Xiangfu Zou, Juntao Tang, Yanling Gong, Wenhu Wan, Haibo Guo

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引用次数: 0

Abstract

The harsh and complex nature of the marine environment can easily compromise protective coatings and lead to corrosion of the carbon steel substrate. Therefore, a marine anticorrosion coating with synergistically enhanced self-healing, abrasion resistance, and corrosion resistance is studied in this work. Coaxial electrostatic spinning nanofibers with nylon 6 (PA6) as shell and two-component epoxy resin as core were modified with SiO₂ and then embedded in epoxy resin coatings to create self-healing anticorrosion coatings. Tensile test results demonstrated that the PA6 shell nanofibers increased the coating's tensile strength by 15%. Meanwhile, the abrasion resistance of the composite coating with 1%SiO₂ nanoparticle was enhanced by 33%. Tafel polarization curves showed that the inclusion of core-shell nanofibers in the coating resulted in a self-healing ability, with an impressive self-healing efficiency of 99%. Low-frequency impedance modulus of electrochemical impedance spectroscopy (EIS) results demonstrated an improvement of nearly two orders of magnitude compared to the pure epoxy coating. Experiments illustrated that the coatings developed in this study for marine anticorrosion exhibit a synergistic enhancement effect on self-healing performance, abrasion resistance, and corrosion resistance.

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SiO2改性PA6核壳纳米纤维协同增强海洋防腐涂料的自愈和耐磨损/耐腐蚀性能

海洋环境的恶劣和复杂的性质很容易损害保护涂层，导致碳钢基体的腐蚀。因此，本文研究了一种协同增强自愈性、耐磨性和耐腐蚀性的海洋防腐涂层。以尼龙6 （PA6）为壳层，双组分环氧树脂为芯层，用SiO2对同轴静电纺丝纳米纤维进行改性，然后包埋在环氧树脂涂层中，形成自修复防腐涂层。拉伸试验结果表明，PA6壳纳米纤维使涂层的拉伸强度提高了15%。同时，1%SiO2纳米颗粒的复合涂层的耐磨性提高了33%。Tafel极化曲线表明，包埋在涂层中的核壳纳米纤维具有自修复能力，自修复效率高达99%。电化学阻抗谱（EIS）的低频阻抗模量结果表明，与纯环氧涂层相比，该涂层的阻抗模量提高了近两个数量级。实验表明，本研究开发的海洋防腐涂料在自愈性能、耐磨性和耐腐蚀性方面表现出协同增强效应。

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 工程技术-材料科学：膜

CiteScore

4.30

自引率

8.70%

发文量

130

审稿时长

2.5 months

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.