| 一种新的降低SiC纤维电阻率的方法 |
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| 引用本文： | 刘军,熊翔,张红波,黄伯云. 一种新的降低SiC纤维电阻率的方法[J]. 中国有色金属学报, 2004, 14(5): 815-819 |
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| 作者姓名： | 刘军 熊翔 张红波 黄伯云 |
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| 作者单位： | 1. 中南大学粉末冶金国家重点实验室,长沙,410083;国防科技大学一院,长沙,410073
2. 中南大学粉末冶金国家重点实验室,长沙,410083 |
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| 摘 要： | 将聚二甲基硅烷(PDMS)与聚氯乙烯(PVC)共裂解合成碳化硅-碳纤维先驱体,并经熔融纺丝及不熔化处理,最后经过烧成制得SiC-C陶瓷纤维,电阻率小于10°Ω@cm,而通过聚碳硅烷制得的SiC纤维的电阻率为106Ω@om.结果表明:采用适当的工艺,能够从聚二甲基硅烷与聚氯乙烯共裂解出发制备低电阻率并兼具良好力学性能的SiC纤维.
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| 关 键 词： | 碳化硅纤维 聚碳硅烷 电阻率 |
| 文章编号： | 1004-0609(2004)05-0815-05 |
| 修稿时间： | 2003-07-30 |
New method to prepare SiC fiber with low resistivity |
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| LIU Jun. New method to prepare SiC fiber with low resistivity[J]. The Chinese Journal of Nonferrous Metals, 2004, 14(5): 815-819 |
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| Authors: | LIU Jun |
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| Abstract: | The precursor polymer was prepared by means of thermal rearrangement reaction of polyvinylchloride and polydimethylsilane. Through melt spinning, infusibilization and heat treatment at high temperature, fiber with low resistivity was obtained; it shows lower resistivity than the SiC fiber derived from polycarbosilane. It is shown that fibers with low resistivity and mechanical properties could be obtained by polymer co-pyrolyzed. |
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| Keywords: | SiC fiber polycarbosilane resistivity preparation |
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