| 聚硅烷Wurtz合成及β-SiC纤维制备的机理 |
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| 引用本文： | 董占能,李春华,郭玉忠. 聚硅烷Wurtz合成及β-SiC纤维制备的机理[J]. 昆明理工大学学报(自然科学版), 2003, 28(2): 123-126,131 |
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| 作者姓名： | 董占能 李春华 郭玉忠 |
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| 作者单位： | 昆明理工大学,生物与化学工程学院,云南,昆明,650224 |
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| 摘 要： | 简要介绍了聚硅烷的特性和用途，研究了聚硅烷的Wurtz合成机理及以聚硅烷为前驱体制各β-SiC纤维的机理．重点讨论了主体溶剂效应对Wurtz合成机理的影响，并用Wurtz聚合反应的微观模型对机理进行了合理解释．同时对聚二甲基硅烷的热解、烧结机理及中间产物的组成和结构进行了分析．
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| 关 键 词： | 聚硅烷 聚二甲基硅烷 Wurtz合成机理 β－SiC纤维 制备机理 微观模型 主体溶剂效应 聚合反应 碳化硅纤维 |
| 文章编号： | 1007-855X(2003)02-0123-05 |
Mechanism of Wurtz-synthesis of Polysilanes and Preparation of β-SiC Fiber |
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| DONG Zhan-neng,LI Chun-hua,QUO Yu-zhong. Mechanism of Wurtz-synthesis of Polysilanes and Preparation of β-SiC Fiber[J]. Journal of Kunming University of Science and Technology(Natural Science Edition), 2003, 28(2): 123-126,131 |
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| Authors: | DONG Zhan-neng LI Chun-hua QUO Yu-zhong |
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| Abstract: | The characteristics and use of polysilanes are birefly recommended. The mechanism of Wurtz - synthesis of polysilanes and preparation of 8 - SiC Fiber with polysilanes as precursor is studied.The influence of bulk solvent effect on the mechanism of wurtz - synthesis is mainly discussed, which is explained rationaly by the micro model of wurtz - polymerization, and the mechanism of pyrogenation and agglomeration of poly-dimethylisilane, and die composition and the structure of intermediates are analyzed. |
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