摘要
采用三氯硅烷水解缩合法合成了含八氢基的笼形倍半硅氧烷(T8H8),并用T8H8合成了多乙烯基硅氧烷笼形倍半硅氧烷(DVS-POSS)树脂,采用FT-IR、1H-NMR、29Si-NMR等手段对其结构进行了表征;探讨了T8H8与二乙烯基硅氧烷(DVS)的加成反应。研究表明,固化的DVS-POSS具有良好的耐热性能,Td5超过530℃;DVS-POSS树脂复合材料具有优良的介电性能,在9.75MHz下,ε为3.02,tgδ为2.4×10-3。
The resin of polyvinylsiloxane-silsesquioxane is a new organic /inorganic hybrid material with high performance. Octahydridrosilsesquioxane(T8H8) was synthesized by hydrolytic condensation of trichlorosilane, and was used to produce a polyvinylsiloxane-silsesquioxane(DVS-POSS)resin. T8H8 and DVS-POSS resin were characterized by FT-IR, 1H-NMR and 29Si-NMR. The addition reaction of T8H8 and Divinylsiloxane(DVS)was also studied. TGA showed that cured DVS-POSS have excellent thermal stability and the T5d is mor...
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2008年第3期54-57,共4页
Aerospace Materials & Technology
关键词
笼形倍半硅氧烷
二乙烯基硅氧烷
加成反应
耐热树脂
Octahydridrosilsesquioxane
Divinylsiloxane
Addition reaction
Heat-Resistant resin
