有机硅聚氨酯丙烯酸酯预聚物的合成  

Study on Synthesis of Polysiloxane Urethane Acrylate Prepolymer

作　　者：史金[1] 孙芳[1] 杜洪光[1] 

机构地区：[1]北京化工大学理学院,北京100029

出　　处：《精细与专用化学品》2009年第23期26-29,共4页Fine and Specialty Chemicals

基　　金：国家自然基金(50873011)

摘　　要：光固化有机硅不仅具有有机硅的耐温、耐候、电气绝缘、低表面张力和低表面能等优良性能．而且还具有可室温固化、固化速度快、无污染等紫外光固化材料的特性，所以备受人们关注，并有着广泛应用领域。Anovel photosensitive polysiloxane urethane acrylate(PSUA) was synthesized from isophorone diisocyanate(IPDI) ,alkylhydroxyl-terminated polydimethysiloxane(SD9134) and hydroxyethyl acrylate(HEA) .The influences of amount of raw materials, dosage of catalyst and temperature on the reaction were investigated.The results showed that the optimal reaction conditions were as follows:taking IPDI and SD9134 as main feedstock with 0.05%～0.1% of DBTDL as catalyst.The reaction temperature should be kept between 20℃ and 40℃ at the former three steps and below 70℃ at the last step.The structure of PSUA was characterized by IR and GPC.

关 键 词：聚氨酯丙烯酸酯预聚物 有机硅 紫外光固化材料 合成 电气绝缘 室温固化 低表面能 表面张力 

分 类 号：O634.41[理学—高分子化学]