有机硅改性苯丙乳液的合成及其性能研究  

Synthesis and properties of styrene-acrylic polymer latex modified by organosilicone

作　　者：王秀霞[1] 姜志钢[2] 冯圣玉[2] 张一烽[1] 

机构地区：[1]浙江大学材料与化学工程学院高分子科学研究所,浙江杭州310027 [2]山东大学化学与化工学院,山东济南250100

出　　处：《现代化工》2004年第8期33-35,共3页Modern Chemical Industry

摘　　要：采用半连续乳液聚合反应的方法合成有机硅改性苯丙乳液,系统考察了乙烯基硅油、乳化剂、引发剂等因素对乳液聚合反应及乳胶粒尺寸和涂膜性能的影响。以乙烯基质量分数为0.30%的羟基硅油与苯乙烯、丙烯酸丁酯、甲基丙烯酸乳液共聚,以过硫酸铵(APS)为引发剂,采用m(十二烷基苯磺酸钠)∶m(聚乙二醇辛苯基醚)=1∶2的复合型乳化剂,70℃下共聚5～6h。所得的乳液带蓝色荧光,乳胶粒粒径为70～100nm,粒径分布窄,乳液具有良好的钙离子稳定性、贮存稳定性和耐温性,涂膜耐水性较好。Modified styrene-aery lie polymer latexes were synthesized by semi-continuous emulsion polymerization and polyvinyl silicone oil, emulsifier, catalyst, reaction temperature and other factors influencing the particle size and film properties were studied. The optimal conditions of the preparation were as follows: 0.30% of vinyl content in silicone oil; copolymerized with styrene, butyl acrylate, and methacrylic acid; anion emulsifier sodium dodecyl benzene sulfonate (SDBS) and nonionic emulsifier OP [m (SDBS): m (OP) = 1:2] were used as cosurfactant; ammonium persulfate as catalyst; reacting at 70°C for 5-6 h. The produced latex has a blue fluorescence, and the particle diameter is between 70-100 nm with a narrow particle size distribution. The stability of the emulsion and the water-resistant property of emulsion coatings are good.

关 键 词：苯丙乳液 乙烯基硅油 改性 

分 类 号：TQ630.4[化学工程—精细化工]