聚二甲基硅氧烷-聚醋酸乙烯酯乳液的制备与性能研究  

Preparation and properties of PDMS-PVAc latices

作　　者：廖俊[1] 刘兴海[1] 

机构地区：[1]武汉大学有机硅化合物及材料教育部工程研究中心,湖北武汉430072

出　　处：《现代化工》2009年第2期39-41,43,共4页Modern Chemical Industry

基　　金：湖北省自然科学基金(2005ABA034);湖北省催化材料重点实验室基金(CHCL06003)资助

摘　　要：通过种子乳液法将聚二甲基硅氧烷和乙烯基三乙氧基硅烷引入到聚醋酸乙烯酯乳液中，制备得到聚二甲基硅氧烷-聚醋酸乙烯酯乳液。聚二甲基硅氧烷的含量在10％～30％，乳液体系具有较好的机械、储藏、稀释和冻融稳定性，具有较高的单体转化率。聚二甲基硅氧烷的引入可提高产品的耐水性，吸水率由30％以上降低到4％以下。FT-IR证明聚二甲基硅氧烷和聚醋酸乙烯酯发生了接枝。PDMS-PVAc latices are prepared by using vinyltriethoxysilane modified PDMS emulsion as seeded emulsion. The monomer＇ s conversion can be high, and the polymerization stability, storing stability, dilution stability, and freezing thawing stability can be good when PDMS content is in the range of 10% - 30%. The water resistance of the product is increased greatly by adding silicone content into it. The water-absorbing ratio can be decreased from above 30% to below 4%. FT-IR confirms the occurrence of copolymerization and grafting.

关 键 词：聚二甲基硅氧烷 聚醋酸乙烯酯 种子乳液法 吸水率 

分 类 号：TQ433.433[化学工程]