Synthesis and Characterization of Poly(methylsilane) as Ceramic Precursor |
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作者姓名: | Chen Lai Wu Shi Sun Jin-liang Ren Mu-su Fan Xue-qi |
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作者单位: | [1]. School of Material Science & Engineering, Shanghai University, Shanghai 200072, China [2]Department of Material Science & Engineering , AnHui Institute of Architecture & Industry, Hefei 230022, China |
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摘 要: | Polysilanes are novel polymers with Si-Si catenation chain. They can be used as precursors for SiC ceramic, have important applications in anti-oxidation of C/C composites. Poly(methylsilane) (PMS), which is an ideal precursor to stoichiometric SiC, is synthesized by the sodium polycondensation reaction of monomer CH3SiHCl2. During the reaction, there is an initiation period. In this period there is no obvious exothermic reaction after dropping of monomer, then suddenly eruptive reaction arise and temperature goes up quickly, After the eruption, the polymerization can proceed smoothly. This phenomenon is harmful to scale-up.
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关 键 词: | 聚乙烯 碳化硅 陶器 聚合体 合成方法 |
文章编号: | 0427-7104(2005)05-0849-02 |
收稿时间: | 2005-08-05 |
修稿时间: | 2005-08-05 |
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