文献类型：期刊文献

中文题名：两性乳化剂体系对有机硅改性丙烯酸酯乳液合成的影响

英文题名：Effect of Amphoteric Emulsifier on Synthesis of Siloxane Modified Acrylate Emulsion

作者：王玉春[1];陆兴章[1];高华星[1];倪礼忠[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2006

卷号：36

期号：4

起止页码：17

中文期刊名：涂料工业

外文期刊名：Paint & Coatings Industry

收录：CSTPCD;;CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：有机硅;丙烯酸酯;两性乳化剂;乳液聚合

外文关键词：siloxane ; acrylate ; amphoteric emulsifier; emulsion polymerization

摘要：采用新型琥珀酸类两性乳化剂(A1)与非离子乳化剂壬基酚聚氧乙烯醚(CA407)复配体系,合成了有机硅γ-甲基丙烯酰氧基丙三甲氧基硅烷(A174)改性的丙烯酸酯乳液。系统研究了两性乳化剂体系与非离子乳化剂复配比例、用量及乳化剂在种子乳液与预乳液中分布比例(R/F)E对乳液聚合及其性能的影响。研究表明:乳化剂配比m(A1)∶m(CA407)=30∶70时,乳液聚合稳定性及抗电解质稳定性较好;乳化剂用量越大,乳胶粒径越小,粒径分布越宽,乳液黏度越大,涂膜吸水率也越大;乳化剂在种子乳液与预乳液中的分布比例主要影响乳液聚合的稳定性。同时通过TEM乳胶粒形态分析及DSC涂膜的玻璃化转变温度分析认为,A174主要在乳液聚合时分布在乳胶粒表面,易水解交联。
Acrylate emulsion modified with γ - （methacrylate）propytrimethoxy siloxane （Al74） is synthesized with succinic acid based amphoteric emulsifier Al and nonionic emulsifier CA407. Influences of emulsifier amount, the ratio of Al and CA407 and their distributions between seed and pre - emulsion （R/F） E are investigated. Test results show the ratio of Al and CA407 effect the stability of emulsion polymerization and anti - electrolyte of emulsion, the emulsifier amount influenced latexes size and its distribution, polymerization stability, emulsion viscosity and film water absorption, etc. The distribution of emulsifier between seed and pre - emulsion mainly effect the stability of polymerization. Also, we analyse the microstructure of latex by transmission electron microscopy（TEM） and the glass transition temperature of the film by DSC.