醋丙乳液的合成及其性能表征  

Synthesis and Property Characterization of Vinyl Acetate/Acrylate Emulsion

作　　者：孙志娟[1] 张心亚[1] 黄洪[1] 陈焕钦[1] 

机构地区：[1]华南理工大学化学研究所,广东广州510640

出　　处：《化学建材》2005年第2期1-4,共4页Chemical Materials for Construction

基　　金：广东省科技厅科技计划项目(2003B10506)广东省计划发展委员会高技术产业化项目(粤财企[2002]347号急件)广州市科技局科技攻关重点项目(2002Z2-D0071)

摘　　要：采用种子乳液聚合法合成一种高性能醋酸乙烯-丙烯酸丁酯-甲基丙烯酸三元共聚乳液(简称醋丙乳液),探讨了聚合过程中乳化剂的配比及用量、单体的选择等因素对产品性能的影响,并对乳液的性能与结构进行分析和表征。研究结果表明,阴离子乳化剂十二烷基苯磺酸钠和非离子乳化剂辛基酚聚氧乙烯(20)醚复配可以提高体系的稳定性,当阴/非离子质量比为1:1,总用量为3%时,乳液综合性能优异。此外,功能性单体甲基丙烯酸的引人可降低乳液的凝胶率并提高乳胶膜的性能。High performance vinyl acetate/acrylate emulsion was synthesized by way of seed emulsion polymerization. Effects of formulation and content of emulsifier and selection of monomers in the process of copolymerization on product performance were discussed, performance and structure of emulsion were analyzed and characterized. Testing results showed that combination of anionic emulsifier and nonionic emulsifier could improve the system stability. Comprehensive performance of the emulsion proved to be excellent when the ratio of anionic emulsifier to nonionic emulsifier was 1:1 and the total emulsifier content accounted for 3% out of the monomers. Moreover, addition of methacrylic acid as functional monomer could reduce coagulum of the emulsion and enhance performance of latex film.

关 键 词：醋丙乳液 性能表征 甲基丙烯酸 合成 功能性单体 三元共聚乳液 种子乳液聚合法 聚氧乙烯 阴离子 聚合过程 

分 类 号：TU561[建筑科学—建筑技术科学] TQ331[化学工程—橡胶工业]