| 引用本文: | 五O五材料实验研究室.SiC纤维先驱丝—聚碳硅烷纤维的研制.[J].国防科技大学学报,1985,(1):71-85.[点击复制] |
| .Synthesis of Polycarbosilane as the Precursor of SiC Fiber[J].Journal of National University of Defense Technology,1985,(1):71-85[点击复制] |
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| SiC纤维先驱丝—聚碳硅烷纤维的研制 |
| 五O五材料实验研究室1 |
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(五O五材料实验研究室)
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| 摘要: |
| 本文对 SiC 纤维的先躯丝—聚碳硅烷纤维的合成进行了研究。聚碳硅烷是由聚硅烷在聚硼硅氧烷(派松)催化下热解而成。熔融纺丝制得的聚碳硅烷纤维，经空气不熔化处理后，在 N2气氛下，1250℃ 烧成具有金属光泽的SiC纤维。通过元素分析，红外光谱分析，热分析及裂解气相色谱分析，对聚硅烷，聚碳硅烷和聚硼硅氧烷的性质和合成工艺进行了研究。 |
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| 投稿日期：1984-05-04 |
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| Synthesis of Polycarbosilane as the Precursor of SiC Fiber |
| Abstract: |
| Polycarlosilane (PC)，the precursor of SiC filer，was preparod by heating polydimethysilane in the presenoe of polyborodiphenylsiloxne (python) as catalyst. The properties of polydimethylsilane，polycarbosilane and polyborodiphenylsiloxane have been investigated by IR spectra，chemical analyses，thermal analyses and pyrolysis gas chromatograph. The suitable reaction conditions were found tentatively. The results showed that the properties of the precursor depended on reaction tempesature，additive amount of polyborodiphenylsiloxane and reaction period of polycarbosilane synthetized.
Silion carbide fiber was made by melt-spinning the polycarbosilane，making the precursor fiber infusible by heating in air to about 200℃ and finally heating under nitrogen to 1250℃. |
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