摘要
以端羟基聚二甲基硅氧烷(PDMS)与氨烃基硅烷偶联剂(DB-912)为原料,合成了端氨烃基聚二甲基硅氧烷低聚物(NS),以此为扩链剂,自乳化法制备了水性有机硅-聚氨酯嵌段共聚物(WPSUR),考察了扩链剂类型、NS的相对分子质量对乳液粒径与薄膜拒水性的影响。
Amino-terminated polydimethylsiloxane(NS) with different molecular weights were synthesized by hydroxyl-terminated polydimethylsiloxane(PDMS) reacting with aminopropylmethyldimethoxyl silane(DB-912).A novel waterborne polysiloxaneurethane copolymer(WPSUR) was prepared using NS as the chain extender.Effect of chain extender type and NS molecular weight on the particle size of WPSUR dispersion and water resistance,water contact angle of WPSURfilms were studied.Results reveal that the particle size of dispersi...
出处
《中国建筑防水》
2010年第16期5-10,共6页
China Building Waterproofing
关键词
防水剂
有机硅
聚氨酯
水分散
拒水性
water repellent
siloxane
polyurethane
waterborne
water resistance
