摘要
以聚二甲基硅烷(PDMS)与聚氯乙烯(PVC)为原料,经过共热解聚合反应合成了聚碳硅烷(PCS-P),并制备出SiC-C纤维.利用IR、XRD、XPS等分析方法对先驱体PCS-P与SiC-C纤维的组成、结构与性能进行了研究.结果表明,在PVC的引入量适当的条件下,通过共热聚将少量的短碳链引入到聚碳硅烷结构中,使SiC-C纤维的电阻率显著降低到10-1-101Ω·cm,并保持了良好的结晶性和耐氧化性.
Polycarbosilane (PCS-P) was synthesized by co-pyrolysis and polymerization using polydimethylsilane (PDMS) and polyvinylchloride (PVC), and SiC-C fiber was obtained by melt-spinning, curing and heat treatment process. The composition, structure and properties of precursors PCS-P and SiC-C fibers were investigated. The results showed that a small number of short carbon chains were introduced into structure of polycarbosilane when mixed ratios of PVC were in the range of 3%-7% by the polymerization. The SiC-C fibers prepared by such PCS-P have good crystallization and oxygenation resistance, and their resistivity decreases remarkably to 10-1-101Ω·cm.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2004年第3期295-300,共6页
Chinese Journal of Materials Research
基金
教育部高等学校骨干教师资助项目
关键词
无机非金属材料
碳化硅纤维
共热解聚合
聚碳硅烷
聚氯乙烯
Crystallization
Curing
Nonmetallic materials
Polymerization
Pyrolysis
Silicon carbide
Spinning (fibers)
Structure (composition)
