摘要
本文采用一种聚钛硅氧烷与聚碳硅烷反应,制得了Ti/Si摩尔比为0.10的聚钛碳硅烷。该聚合物具有良好的成丝性与稳定性,经熔融纺丝,再经不熔化处理后,在氮气气氛保护下1300℃热处理后制得了高含钛量的碳化硅纤维。文中对聚钛硅氧烷的合成与结构,它与聚碳硅烷的反应过程及聚钛碳硅烷的热分解特性进行了分析与研究。
The Polytitanocarbosilane with the molar ratio of Ti:Si=1:10 had beenprepared by the reaction of polycarbosilane with polytitanosiloxane. Thispolymer had excellent spinnability and stability. After being melt spinning andunmelting treatment, followed by heat treatment at 1300℃ in the presence ofnitrogen atmosphere, the SiC fiber with high molar ratio of Ti/Si wasobtained. The synthesis and structure of cited polytitanosiloxane, its reactionprocess with polycarbosilane, and the pyrolytic properties of polytitanocarbo-silane were examined and discussed.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
1989年第2期101-106,共6页
Journal of National University of Defense Technology
关键词
碳化硅纤维
聚钛硅氧烷
聚碳硅烷
composite
polytitanosiloxane polycarbosilane
polytitanoca-rbosilane
SiC fiber
