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Synthesis of continuous silicon carbide fibre

Part 5 Factors affecting stability of polycarbosilane to oxidation

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Abstract

Polycarbosilane (PC) was obtained by adding bolodiphenylsiloxane (BDPSO) as a reaction accelerator to poly(dimethylsilane) (PDMS), then the thermal decomposition and condensation at various conditions were determined. The molecular weight distribution and the reactivity with oxygen of PC differ with the quantity of BDPSO added, the reaction temperature and the reaction time. The larger the amount of BDPSO, the higher the reaction temperature and the longer the reaction time, the larger becomes the molecular weight of PC. In addition, the higher the reaction temperature, the more stable becomes PC for oxidation. The synthesized PC was spun and the fibre was heated in air at low temperature for curing. The cured fibre was then heat-treated to obtain the SiC fibre. Properties of the SiC fibre are closely related to the oxidation properties of the PC.

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Authors and Affiliations

  1. Research and Development Laboratory, Nippon Carbon Co, Ltd, Shin-urashima-cho, Kanagawa-ku, Yokohama-shi, 221, Kanagawa-ken, Japan

    H. Ichikawa, F. Machino, S. Mitsuno & T. Ishikawa

  2. The Research Institute for Iron, Steel and Other Metals, Tohoku University, Oarai-machi, 311-13, Ibaraki-ken, Japan

    K. Okamura

  3. The Research Institute for Special Inorganic Materials, Asahi-mura, Kashima-gun, 311-14, Ibaraki-ken, Japan

    Y. Hasegawa

Authors
  1. H. Ichikawa
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  2. F. Machino
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  3. S. Mitsuno
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  4. T. Ishikawa
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  5. K. Okamura
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  6. Y. Hasegawa
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Ichikawa, H., Machino, F., Mitsuno, S. et al. Synthesis of continuous silicon carbide fibre. J Mater Sci 21, 4352–4358 (1986). https://doi.org/10.1007/BF01106555

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  • DOI: https://doi.org/10.1007/BF01106555

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