力学与防腐性能协同增强的聚吡咯改性芳纶纤维<strong>/</strong>环氧复合涂料

doi:10.11902/1005.4537.2025.359

中国腐蚀与防护学报

2026, Vol. 46

Issue (5): 1517-1526 CSTR: 32134.14.1005.4537.2025.359 DOI: 10.11902/1005.4537.2025.359

研究报告

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力学与防腐性能协同增强的聚吡咯改性芳纶纤维/环氧复合涂料

李晓峰¹, 李艳茹¹, 卢云飞²(

), 张泰华¹, 常雪婷¹, 安燕¹

^1.上海海事大学海洋科学与工程学院上海 201306
^2.武汉第二船舶设计研究所武汉 430064

Polypyrrole-modified Aramid Fiber/Epoxy Composite Coating with Synergistically Enhanced Mechanical and Anti-corrosion Properties

LI Xiaofeng¹, LI Yanru¹, LU Yunfei²(

), ZHANG Taihua¹, CHANG Xueting¹, AN Yan¹

^1.College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
^2.Wuhan Second Ship Design & Research Institute, Wuhan 430064, China

引用本文:

李晓峰, 李艳茹, 卢云飞, 张泰华, 常雪婷, 安燕. 力学与防腐性能协同增强的聚吡咯改性芳纶纤维/环氧复合涂料[J]. 中国腐蚀与防护学报, 2026, 46(5): 1517-1526.
Xiaofeng LI, Yanru LI, Yunfei LU, Taihua ZHANG, Xueting CHANG, Yan AN. Polypyrrole-modified Aramid Fiber/Epoxy Composite Coating with Synergistically Enhanced Mechanical and Anti-corrosion Properties[J]. Journal of Chinese Society for Corrosion and protection, 2026, 46(5): 1517-1526.

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摘要:

采用原位聚合法在芳纶纤维(AF)表面沉积了聚吡咯(PPy)包覆层，成功制备出PPy/AF复合纤维。通过调控该复合纤维在环氧树脂(EP)中的质量分数，制备了一系列PPy/AF/EP复合涂层。利用扫描电子显微镜和Fourier变换红外光谱仪等对复合纤维的形貌与化学结构进行了表征。通过拉伸测试与电化学测试，系统研究了复合材料的力学性能及在3.5%NaCl溶液中的腐蚀防护行为。结果表明，当改性纤维的添加量为2.0%时，复合涂层的拉伸强度由纯环氧树脂涂层的39.6 MPa提高至55.68 MPa，增幅达40.61%。在3.5%NaCl溶液中浸泡168 h后，复合涂层的低频阻抗模值(|Z|_{0.01 Hz})仍保持在6.3 × 10⁹ Ω·cm²，较纯环氧树脂涂层提升了约4个数量级。上述结果证实，PPy改性纤维的引入可同时增强环氧涂层的力学性能与耐腐蚀性能，在多功能防护涂层领域展现出良好的应用潜力。

关键词 ：芳纶纤维, 聚吡咯, 力学性能, 防腐蚀

Abstract：

Polypyrrole (PPy) particulates was deposited on the surface of aramid fibers (AF) by in-situ polymerization method to obtain PPy covered AF composite fibers (PPy/AF). Then a series of PPy/AF/EP composite coatings were then fabricated by adjusting the mass fraction of the modified fibers in the epoxy resin. The morphology and chemical structure of the composite fibers were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy. The mechanical properties and protectiveness the coatings in 3.5%NaCl solution were systematically investigated via tensile tests and electrochemical measurements. The results showed that for composite coating with modified fibers of 2.0%PPy0.5/AF, the tensile strength of the composite coating increased from 39.6 MPa to 55.68 MPa, corresponding to a 40.61% enhancement. After immersion in 3.5%NaCl solution for 168 h, the low-frequency impedance modulus (|Z|_{0.01 Hz}) of the composite coating remained at 6.3 × 10⁹ Ω·cm², which was approximately four orders of magnitude higher than that of the pure epoxy coating. The above results indicate that the incorporation of Ppy-modified aramid fibers can simultaneously enhance the mechanical properties and corrosion resistance of the epoxy coatings, demonstrating great potential for applications in the field of multifunctional protective coatings.

Key words： aramid fiber polypyrrole mechanical properties anticorrosion

收稿日期: 2025-11-24 32134.14.1005.4537.2025.359

ZTFLH:

TG174

基金资助:上海市深远海洋装备材料工程技术中心(19DZ2253100)

通讯作者: 卢云飞，E-mail：yflu@alum.imr.ac.cn，研究方向为船舶防腐材料与涂层技术

Corresponding author: LU Yunfei, E-mail: yflu@alum.imr.ac.cn

作者简介: 李晓峰，男，1971年生，博士，教授

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https://www.jcscp.org/CN/10.11902/1005.4537.2025.359 或 https://www.jcscp.org/CN/Y2026/V46/I5/1517

图1 AF, PPy0.3/AF, PPy0.5/AF和PPy1/AF的表面形貌图

图2 芳纶纤维改性前后的热重曲线和微分热重曲线及Fourier变换红外光谱

图3 涂层的拉伸强度，拉伸模量，拉伸强度与拉伸模量的折线图与应力-应变曲线

图4 涂层的附着力测试与柔韧性测试图

图5 涂层的热重与微分热重曲线

图6 涂层与水的接触角

图7 涂层的Bode图和低频模量值变化图

图8 涂层的Nyquist图和等效电路图

表1 EP、1%AF/EP和2%PPy/AF/EP涂层在3.5%NaCl溶液中得到的电化学拟合参数

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