八苯基取代笼形倍半硅氧烷的合成及表征  

Synthesis and characterization of polyhedral octaphenylsilsesquioxane

作　　者：张光亚[1] 黄光速[1] 张典[1] 

机构地区：[1]四川大学高分子科学与工程学院,成都610065

出　　处：《合成橡胶工业》2012年第5期343-346,共4页China Synthetic Rubber Industry

基　　金：国家自然科学基金资助项目(51073097)

摘　　要：以苯基三乙氧基硅烷(PTES)为原料、氢氧化钾为催化剂,通过水解缩合法合成了八苯基取代笼形倍半硅氧烷(OPS),用傅里叶变换红外光谱、核磁共振硅谱、X射线衍射和热重分析等手段,对产物的结构进行了表征,并考察了催化剂用量、水加入量和反应时间等条件对产物收率的影响。结果表明,在严格控制水解条件下可以合成OPS;当PTES用量为28 g时,在氢氧化钾的质量分数为PTES的2%、水加入量为4 mL以及反应时间为72 h的条件下,所得OPS的收率大于80%。Polyhedral octaphenylsilsesquioxane （OPS） was synthsized by hydrolytic condensation with phenyltriethoxysilane （PTES） as material, po- tassium hydroxide as catalyst. The structure of OPS was characterized by Fourier transform infrared spec- troscopy, 29Si-nuclear magnetic resonance spectros- copy, X-ray diffraction and thermal gravimetric anal- ysis, and the effects of catalyst amount, water adding amount and reaction time on the yield ofproduct were investigated. The results showed that OPS could be synthesized when the hydrolytic condi- tion was controlled strictly, the yield of OPS could reach above 80% at PTES 28 g, mass fraction of po- tassium hydroxide in PTES 2% , water 4 mL as well as reaction time 72 h.

关 键 词：八苯基取代笼形倍半硅氧烷 水解缩合 苯基三乙氧基硅烷 氢氧化钾 

分 类 号：TQ264.14[化学工程—有机化工]