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Synthesis of continuous silicon carbide fibre with high tensile strength and high Young's modulus

Part 1 Synthesis of polycarbosilane as precursor

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Abstract

Polycarbosilane as the precursor of continuous SiC fibre was synthesized by thermal decomposition of polydimethylsilane. The structure of the polycarbosilane is concluded to be similar to that of polysilapropylene by the measurements of i.r. spectra, NMR spectra and chemical analyses. Its formation mechanisms are initially the formation of carbosilane by thermal decomposition of polydimethylsilane and then the increase in molecular weight by dehydrogenation-condensation of the carbosilane. Molecular structure and molecular weight distribution of the polycarbosilane depend on the reaction temperature.

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Authors and Affiliations

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

    S. Yajima, Y. Hasegawa, J. Hayashi & M. Iimura

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

    M. Iimura

Authors
  1. S. Yajima
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  2. Y. Hasegawa
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  3. J. Hayashi
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  4. M. Iimura
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Yajima, S., Hasegawa, Y., Hayashi, J. et al. Synthesis of continuous silicon carbide fibre with high tensile strength and high Young's modulus. J Mater Sci 13, 2569–2576 (1978). https://doi.org/10.1007/BF02402743

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  • DOI: https://doi.org/10.1007/BF02402743

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