梯形苯基/甲基聚倍半硅氧烷树脂的合成及热稳定性研究  

Synthesis and Thermo-Stability Study of Ladderlike Phenyl/Methyl Silsesquioxane Resin

作　　者：王大喜[1] 邢彦岭[2] 沈新春[1] 栗秀刚[1] 徐春明[1] 

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京102249 [2]中海油能源发展股份有限公司石化分公司,广东惠州516086

出　　处：《合成化学》2009年第6期675-678,共4页Chinese Journal of Synthetic Chemistry

基　　金：中国石油大学(北京)重质油国家重点实验室资助项目

摘　　要：以苯基三氯硅烷和甲基三氯硅烷为主要原料,以不同摩尔比(1∶1,2∶1,3∶1)合成了三种梯形聚苯基/聚甲基倍半硅氧烷树脂(1～3),其结构经UV和IR表征。热重分析发现,1～3的热分解温度分别为470℃,517℃和540℃,说明随着苯基三氯硅烷与甲基三氯硅烷摩尔比增大,热稳定性增加。用量子化学方法计算发现苯基硅氧烷的C-Si键长比甲基硅氧烷C-Si键短,且更牢固。Three ladderlike polyphenyl/methyl silsesquioxane resins （1 ～ 3 ） were synthesized from methyltrichlorosilicane and phenyhrichlorosilicane with different ratios of 1 ： 1, 2 ： 1 and 3 ： 1, respectively. The structures were characterized by UV and Itt. The thermal decomposition temperatures of 1 - 3 are 470 ℃ , 517 ℃ and 540 ℃ , respectively by DTG. The thermal stability of the polymer increased with the increase of mole ratio of phenyltrichlorosilicane to methyltrichlorosilicane. It is found by quantum chemistry calculation that the C - Si bond length of phenyl silicone is shorter and firmer than that of methyl silicone.

关 键 词：苯基三氯硅烷 甲基三氯硅烷 倍半硅氧烷树脂 热稳定性 量子化学 合成 

分 类 号：O634.4[理学—高分子化学] O631.5[理学—化学]