摘要
以聚碳硅烷(PCS)和四甲基四乙烯基环四硅氧烷(D4V i)为原料,合成了新型含乙烯基聚碳硅烷(PVCS)。利用FT-IR、GPC、DSC、TG、XRD等分析手段对PVCS的结构、固化特性及裂解特性进行表征。结果表明:PVCS中含有Si—H及CC基,可在200～350℃固化,350℃固化质量保留率为96.6%,1 000℃陶瓷产率为80.0%,1 200℃陶瓷产物出现β-SiC微晶。
Thermosetting polycarbosilane （PVCS） was prepared from polycarbosilane （PCS） and 2,4,6, 8-Tetravinyl-2,4,6,8-tetramethylcyclotrasiloxane （ vi D4 ）. The chemical composition, structure and curing abil- ity and pyrolysis properties were investigated by GPC, DSC, FT-IR, TG, XRD and other analytical tools. The results showed that PVCS contained Si-H and C= C reactive groups could cure at 200 - 350℃, and the residual weight was 96. 6% at 350 ℃. The ceramic yield of PVCS at 1000℃ in N2 atmosphere was 80. 0 wt%, β-SiC crystallite appeared in the ceramics product at 1200 %.
出处
《有机硅材料》
CAS
2011年第6期380-383,共4页
Silicone Material
关键词
SIC
交联
聚碳硅烷
SiC, cross linking, polycarbonsilane
