文献类型：期刊文献

中文题名：苯丙乳液应用性能的影响因素

英文题名：Factors Influencing Styrene- Acrylic Emulsion Application Performance

作者：许利[1];贾丽洲[1];易红玲[1];林珩[1];徐建[2,3];傅乐峰[2,3];郑柏存[1]

机构：[1]华东理工大学体育新材料研发中心,上海200237;[2]上海三瑞高分子有限公司,上海200232;[3]上海建筑外加剂工程技术研究中心,上海200232

年份：2014

卷号：28

期号：1

起止页码：75

中文期刊名：材料研究学报

外文期刊名：Chinese Journal of Materials Research

收录：CSTPCD;;EI(收录号：20141017430312);Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

语种：中文

中文关键词：有机高分子材料;苯丙乳液;聚合;流变学;粒径分布;玻璃化转变温度

外文关键词：organic polymer materials, styrene-acrylic emulsion, polymerization, rheology, particle size distribution, glass transition temperature

摘要：以苯乙烯(St)、丙烯酸异辛酯(2-EHA)为主要单体采用预乳化半连续种子乳液聚合工艺合成了苯丙乳液。用激光粒度仪测试了乳胶粒粒径大小及粒度分布,用差示扫描量热法(DSC)测试了共聚物的玻璃化转变温度,用流变仪测量了乳液的流变性能,研究了单体配比、交联剂用量以及乳化剂用量对乳胶粒粒径、乳液的稳定性、流变性、粘结性能的影响。结果表明:合成的苯丙乳液为假塑型流体;乳液的粘度随着2-EHA/St配比、交联剂用量和乳化剂用量的增加而升高;乳液的稳定性随着乳化剂用量的增大而提高,随着交联剂用量的增大而降低;乳液胶膜的粘结性随着交联剂用量以及2-EHA/St配比的增大而增强;乳胶粒的粒径随着乳化剂用量的增加而变小,随着交联剂用量的增加而变大。
The styrene-acrylic emulsion was synthesized by pre-emulsified semi-continuous seeded emulsion polymerization, with styrene （St） and 2-ethylhexyl acrylate （2-EHA） as main monomers. The par- ticle size distributions were characterized by laser particle size analyzer, the glass transition temperatures were measured by DSC, and the rheological behaviors were analyzed by rheometer. The effects of mono- mer-proportion, the amount of cross-linking agent and emulsifiers on particle sizes, emulsion stabilities, rheological behaviors and bonding properties were investigated. The results show that styrene-acrylic emulsion is a pseudoplastic fluid, and the viscosity enhanced with the increase of the ratio of 2-EHA/St, the amount of cross-linking agent or emulsifiers. The emulsions stabilize with the increment of emulsifi- ers, while destabilize with the increment of cross-linking agent. The shear bond strength enhances with the increment of cross-linking agent or the ratio of 2-EHA/St. The particle size of emulsions decreases with the increment of emulsifiers, while increases with the increment of cross-linking agent.