1,3,5-三(甲基三氟丙基)环三硅氧烷/六甲基环三硅氧烷共聚物的合成与表征  

Synthesis and Characterization of 1,3,5-Tris(trifluoropropylmethyl) Cyclotrisiloxane/Hexamethyl Cyclotrisiloxane Copolymer

作　　者：杨波[1] 赵柯[2] 田军昊[2] 包永忠[1] 黄志明[1] 

机构地区：[1]浙江大学化学反应工程国家重点实验室,浙江杭州310027 [2]浙江化工科技集团有限公司,浙江杭州310023

出　　处：《浙江化工》2008年第7期1-4,共4页Zhejiang Chemical Industry

摘　　要：由1,3,5-三(甲基三氟丙基)环三硅氧烷和六甲基环三硅氧烷的阴离子本体开环共聚制备了不同组成的共聚氟硅生胶,并结合硅氧烷的开环机理分析了聚合过程中特性粘数变化趋势。发现聚合过程中特性粘数变化趋势为先快速增长,然后下降并趋于稳定。不同共聚组成的硫化共聚氟硅胶均具有优良的热稳定性。Fluorosilicon rubbers with different composition were prepared by anionic copolymerization of 1,3, 5-tris（trifluoropropylmethyl）cyclotrisiloxane and hexamethyl cyclotrisiloxane. The variation of intrinsic viscosity of copolymer with polymerization time was determined and discussed according to the anionic ring-opening mechanism. It was found that he intrinsic viscosity increased in the initial stage of polymerization, and level off or slightly decreased as polymerization proceeded for a longer time. The crosslinked fluorosilicon rubbers with different composition exhibited excellent thermal stability.

关 键 词：1 3 5-三(甲基三氟丙基)环三硅氧烷 六甲基环三硅氧烷 阴离子本体开环聚合 特性粘数 

分 类 号：TQ330.1[化学工程—橡胶工业]