聚氯乙烯-水性聚氨酯水乳胶的合成与性能研究  

Preparation and Performance of Polyvinyl Chloride-Waterborne Polyurethane Latex

作　　者：张悦 吴宇 董晓宇 王淑芬 唐家鹏 饶祥 丁运生 Zhang Yue;Wu Yu;Dong Xiaoyu;Wang Shufen;Tang Jiapeng;Rao Xiang;Ding Yunsheng(School of Materials Science and Engineering,Hefei University of Technology,Hefei Anhui 230009,China;School of Chemistry and Chemical Engineering,and Anhui Key Laboratory of Advanced Functional Materials and Devices,Hefei University of Technology,Hefei Anhui 230009,China;Advanced Functional Coating Additives R&D Center,School of Energy Materials and Chemical Engineering,Hefei University,Hefei Anhui 230000,China;Anhui Provincial Engineering Research Center for Green Coating High-performance Additives,Hefei Anhui 230000,China)

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009 [2]合肥工业大学化学与化工学院先进功能材料与器件安徽省重点实验室,安徽合肥230009 [3]合肥大学能源材料与化学工程学院,安徽合肥230000 [4]安徽省绿色涂料高性能助剂工程研究中心,安徽合肥230000

出　　处：《上海涂料》2024年第4期1-9,共9页Shanghai Coatings

基　　金：安徽省自然科学基金(2208085QE137);安徽省重大科技专项-成果工程化研发项目(202203C08020009)。

摘　　要：发展低挥发性有机物(VOCs)含量的水性涂料是降低污染、助力实现“双碳”目标的有效途径。本研究合成了可聚合水性聚氨酯(WPU),以其作为共聚单体与可聚合乳化剂,以聚氯乙烯(PVC)水乳胶为种子,同时引入氮丙啶(H-100)交联剂,通过半连续种子乳液聚合法制备了聚氯乙烯-水性聚氨酯(PVC-WPU)水乳胶。将该水乳胶用于金属防腐蚀涂层,通过接触角、吸水率、附着力、电化学测试分析等方法考察了涂层的防腐蚀性能。结果表明,在3.5%的NaCl溶液中浸泡5 d后,交联聚氯乙烯-水性聚氨酯(C-PVC-WPU)涂层的低频阻抗值(|Z|f=0.01Hz)约为107Ω·cm2,腐蚀抑制效率为99.98%。Developing low volatile organic compound(VOCs)content water-based coatings is an effective approach to reducing pollution and aiding in the achievement of dual carbon goals.In this paper,a polymerizable waterborne polyurethane(WPU)was synthesized,which was used as a comonomer and a polymerizable emulsifier.With polyvinyl chloride(PVC)latex as the seed and aziridine(H-100)as the crosslinking agent,PVC-WPU latex was prepared by semi-continuous seed emulsion polymerization.The latex was applied to metal anti-corrosion coatings,and the anti-corrosion performance of the coatings was investigated through methods such as contact angle,water absorption,adhesion,and electrochemical testing analysis.The results showed that the low-frequency impedance value(|Z|f=0.01 Hz)of C-PVC-WPU(7%DMPA)coating is approximately 107Ω·cm2 and the corrosion inhibition efficiency is 99.98%after soaking in 3.5%NaCl solution for 5 days.

关 键 词：聚氯乙烯 水性聚氨酯 防腐蚀 水性涂料 水乳胶 

分 类 号：TQ630.7[化学工程—精细化工]