文献类型：期刊文献

中文题名：基于乙烯基磷酸的核壳乳液功能防腐涂层制备

英文题名：Preparation of Core-Shell Emulsion Functional Anticorrosive Coating Based on Vinyl Phosphonic Acid

作者：孙建刚[1];何昊晨[1];曹红亮[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2025

卷号：38

期号：4

起止页码：363

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：;北大核心:【北大核心2023】；

语种：中文

中文关键词：种子乳液聚合;乙烯基磷酸;核壳结构;铝材防腐涂层;水性涂料

外文关键词：seed emulsion polymerization;vinyl phosphanic acid;core-shell structure;aluminum anticorrosive coating;water-based coating

摘要：以苯乙烯(St)和丙烯酸正丁酯(BA)为共聚单体、乙烯基磷酸(VPA)为功能单体,通过种子乳液聚合法制备了具有核壳结构、含磷酸基团的功能乳胶颗粒。以poly(St-co-BA)为种子、poly(St-co-BA-co-VPA)为壳层,制备了固含量(固体颗粒在产物乳液中的质量分数)约30%、颗粒分布较均匀的核壳乳液。所制得的核壳乳液涂层的热分解温度大于380℃,腐蚀电位可达到1.74 V,腐蚀电流密度有所下降,具有优异的防腐性能。这种功能涂层具有着很高的阻抗,证明了其可以大幅减缓腐蚀速率。
Aluminum and its alloys have a wide range of applications because of their excellent properties.However,aluminum corrodes during actual use.Therefore,protecting aluminum is usually achieved through coatings.Due to environmental protection requirements,the research of water-based coatings is becoming more and more important.This paper reported the preparation of functional latex particles containing phosphonic acid with core-shell structure using styrene(St)and n-butyl acrylate(BA)as copolymers and vinyl phosphonic acid(VPA)as the functional monomer.The core-shell structure was accomplished through seed emulsion polymerization,using poly(St-co-BA)as the seed and poly(St-co-BA-co-VPA)as the shell.The core-shell emulsions exhibited a solid content(mass fraction of solid particles in the emulsion product)of approximately 30%,uniform particle distribution,and a well-defined core-shell structure.The coatings exhibited a thermal decomposition temperature above 380℃.The corrosion potential of the coating reached 1.74 V,the corrosion current density decreased,and the corrosion resistance was excellent,which proved the excellent corrosion resistance of aluminum.In electrochemical impedance spectroscopy tests,this functional coating had a high impedance,which also proved that this coating could greatly slow down the corrosion rate.