PYROLYSIS OF SILICON-BACKBONE POLYMERS TO SILICON-CARBIDE
PYROLYSIS OF SILICON-BACKBONE POLYMERS TO SILICON-CARBIDE
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DOI：
10.1111/j.1151-2916.1990.tb06499.x
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发表时间：
1990-02-01
影响因子：
3.9
通讯作者：
WORSFOLD, DJ
中科院分区：
文献类型：
--
作者：
CARLSSON, DJ;COONEY, JD;WORSFOLD, DJ
系统研究了聚硅烷均聚物、共聚物和三元共聚物的组成对其热解生成碳化硅（SiC）的影响。陶瓷产率被发现增加的聚（二甲基硅烷）结构被取代与己基，特别是，苯基。SiC产率的最佳改进来自于低含量的含有不饱和基团（乙烯基或烯丙基）的硅烷单体的共聚。对于一个给定的组合物，陶瓷产率增加，在氩气下的加热速率。红外光谱和热重分析用于确定高达1200°C的热解过程中伴随的化学变化。这些变化包括碳硅烷键和Si-H基团的形成。
A systematic study of the role of the composition of polysilane homo‐, co‐, and terpolymers on their pyrolysis yield to silicon carbide (SiC) was performed. The ceramic yield was found to increase as the poly(dimethylsilane) structure was substituted with hexyl and, especially, phenyl groups. the best improvement in SiC yield came from the copolymerization of low levels of silane monomers containing unsaturated groups (vinyl or allyl). For a given composition, ceramic yield increased with increasing heating rate under argon. Infrared spectroscopy and thermogravimetry were used to identify the chemical changes accompanying the pyrolysis process up to 1200°C. These changes included the formation of carbosilane linkages and Si‐H groups.