环氧/氟碳复合涂层的制备及其耐磨、防腐性能  

Preparation of Epoxy/Fluorocarbon Composite Coating and Its Wear-Resisting and Anti-Corrosion Performance

作　　者：周少锋[1] 张瑛 闫瑾 黄进 刘亚青[1] 赵贵哲[1] ZHOU Shaofeng;ZHANG Ying;YAN Jin;HUANG Jin;LIU Yaqing;ZHAO Guizhe(School of Materials Science and Engineering,North University of China,Taiyuan 030051,Shanxi,China;Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing,Southwest University,Chongqing 400715,China)

机构地区：[1]中北大学材料科学与工程学院,山西太原030051 [2]西南大学软物质材料化学与功能制造重庆市重点实验室,重庆400715

出　　处：《武汉大学学报（理学版）》2022年第2期209-220,共12页Journal of Wuhan University:Natural Science Edition

基　　金：山西省科技重大专项项目(20181102014)。

摘　　要：为提高氟碳树脂涂层在金属基体上的疏水性和耐磨、防腐性能,采用简单共混方法制备了环氧树脂(EP)改性氟碳树脂(FEVE)复合涂层EP/FEVE。采用傅里叶变换红外光谱(FT-IR)确定复合涂层的组成和结构,并基于干摩擦和模拟海水(3.5%NaCl溶液)摩擦测试与电化学阻抗谱(EIS)测试研究了复合涂层的耐磨、防腐性能及机理。结果表明,与FEVE相比,当EP质量为FEVE质量的10%时,复合涂层在干摩擦和模拟海水摩擦条件下的耐磨性能分别提高69.8%和66.1%,涂层破损时间延长12.2倍;在3.5%NaCl溶液中浸泡15 d后,复合涂层阻抗模量较FEVE高近3个数量级。机理研究表明,EP的分子链与FEVE分子链段通过氢键穿插分布形成了交联网络结构,并借助EP分子链中刚性结构的强化作用与活性基团的活化作用,使EP/FEVE复合涂层在耐磨、防腐、力学性能等方面表现出综合性能优势。To improve the hydrophobicity,wear,and corrosion resistance of fluorocarbon resin coatings on metal substrates,epoxy resin(EP)modified fluorocarbon resin(FEVE)composite coatings were prepared by a simple blending method.Fourier transform-infrared spectroscopy(FT-IR)was used to determine the composition and structure of the composite coating.And based on dry friction and simulated seawater(3.5%NaCl solution)friction test and electrochemical impedance spectroscopy(EIS)test to study the wear resistance,corrosion resistance and mechanism of the EP/FEVE composite coating.Compared with FEVE,when the mass of EP to the mass of FEVE is 10%,the EP/FEVE composite shows the wear resistance of the composite coating in dry and simulated seawater en⁃vironments was increased by 69.8%and 66.1%,respectively,and the coating damage time was extended by 12.2 times.Besides,the impedance modulus of the composite coating was near 3 orders of magnitude higher than that of FEVE after immersion in 3.5%NaCl solution for 15 days.The mechanism study showed that the EP and FEVE molecular chains in the composite coating are distributed through hydrogen bonds to form a cross-linked network structure,and with the reinforcing effect of the rigid structure in the EP molecular chain and the activating effect of the active groups of EP,the EP/FEVE composite coating shows more outstanding comprehensive performance advantages in terms of wear resistance,corrosion resistance and mechanical properties.

关 键 词：氟碳树脂 环氧树脂 复合涂层 耐磨 防腐 

分 类 号：TQ637.2[化学工程—精细化工]