发明名称 |
Method for the preparation of an inorganic fiber containing silicon, carbon, boron and nitrogen |
摘要 |
The invention provides a novel inorganic fiber composed of the elements of silicon, carbon, boron and nitrogen of which the Si/B molar ratio is 2:1 to 200:1. The inorganic fiber is obtained by a method comprising the steps of: (a) preparing an organoborosilicon polymer by heating a mixture of an organopolysilane and an organoborazine compound, e.g. B-trimethyl-N-triphenyl borazine, to effect thermal decomposition and polycondensation reaction; (b) spinning the polymer into a fibrous form; (c) infusibilizing the fiber of the polymer by thermally oxidizing in an oxidizing atmosphere or by irradiating with ionizing radiations; and (d) calcining the infusibilized fiber at 900 DEG to 1800 DEG C. The inventive inorganic fiber is more stable at high temperatures than conventional silicon carbide fibers.
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申请公布号 |
US4604367(A) |
申请公布日期 |
1986.08.05 |
申请号 |
US19840682796 |
申请日期 |
1984.12.18 |
申请人 |
SHIN-ETSU CHEMICAL CO., LTD. |
发明人 |
TAKAMIZAWA, MINORU;KOBAYASHI, TAISHI;HAYASHIDA, AKIRA;TAKEDA, YOSHIHUMI |
分类号 |
D01F9/10;C04B35/571;C08G79/00;C08G79/08;D01F9/08;(IPC1-7):C04B35/02 |
主分类号 |
D01F9/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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