纳米SiO_2/聚丙烯酸酯复合乳液的研究  

Research on nano SiO_2/polyacrylate composite emulsion

作　　者：凌爱莲[1] 杨冬玲[1] 白金泉[1] 

机构地区：[1]北京工业大学环境与能源工程学院应用化学系,北京100022

出　　处：《化工新型材料》2004年第12期40-43,共4页New Chemical Materials

摘　　要：试验了四种制备纳米SiO2 /聚丙烯酸酯复合乳液的方法 ,结果表明 ,以KPS +NH3·H2 O引发乳液聚合和以偶联剂处理SiO2 纳米溶胶再进行乳液聚合两种方法都可以得到稳定存在的无机纳米SiO2 /有机物复合乳液 ,其性能优于全丙乳液。而用HPC或以阳离子表面活性剂 -十六烷基三甲基溴化铵 (CTAB)处理SiO2 纳米溶胶后再进行乳液聚合两种方法 ,必须要有合适孔径的超滤膜或合适的专用阳离子单体 ,才能制得稳定的复合型的高分子乳液。The nano SiO 2/polyacrylate composite emulsion was synthesized by four different means. The experimental results show that the two polymerization methods are effected, which are (1)the initiative system is KPS+NH 3·H 2O and (2) the surface of SiO 2 nanoparticles was modified by organic silicon coupling agent ,the stabilization production was obtained. The emulsion performances was compared to the polyacrlic emulsion performances, the results show that the former latter is excel the latter in performances. When the surface of SiO 2 nanoparticles was modified by HPC or CTAB , than the composite emulsion was synthesized, must have suitable pore diameter UF membrane or cation monomer.

关 键 词：复合乳液 纳米SIO2 聚丙烯酸酯 乳液聚合 偶联剂 阳离子表面活性剂 引发 CTAB 十六烷基三甲基溴化铵 NH3 

分 类 号：TQ317[化学工程—高聚物工业]