Abstract
Poly(dimethylsilylene-diphenylsilylene) copolymer, [(SiMe2 x(SiPh2)]n, where x=1.0 to 8.0, was synthesized by condensation polymerization of dimethyldichlorosilane and diphenyldichlorosilane in xylene. In the thermogravimetric analysis of the copolymer, weight loss started at 170‡C and the weight residue at 1,000‡C was 32%. The copolymer was stabilized by thermal oxidation at 80 to 110‡C for 5 hr in air, and its thermal stability increased as the temperature increased. The copolymer heat treated above 700‡C showed no organic bonds of C-H and Si-CH3, while Si-C and Si-0 bonds were observed. Amorphous SiC was obtained by pyrolysis at 1,000‡C and β-SiC at 1,200 to 1,400‡C, in which better crystallinity of β-SiC was observed at a higher temperature.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
Burkhard, C. A., “Polydimethylsilanes”,J. Amer. Chem. Soc,71, 963 (1949).
Chandra, G. and R. H., “Encyclopedia of Polymer Science and Engineering”, Wiley, New York, 13,312 (1988).
Fritz, G. and Matern, E., “Carbosilanes Synthesis and Reaction”, Springer, New York (1986).
Hasegawa, Y., Iimura, M. and Yajima, S., “Synthesis of Continuous Silicon Carbide”J. Mat. Sci.,15, 720 (1980).
Shilling, C.L., Wesson, J. P. and Williams, T.C., “Polycarbosilane Precursor for Silicon Carbide”Am. Ceram. Soc. Bull,62, 912 (1983).
Verbeek, W. and Winter, G., “Silicon Carbide-Shaped Article and Process for the Manufacture Thereof,’ Ger. Offen. 2 236 078 (1974).
West, R. C. and Hench, L. L., “Ultrastructure Processing of Ceramics, Glasses and Composites”, Wiley, New York, 235 (1984).
Yajima, S., Hasegawa, Y., Hayashi, J. and Iimura, M., “Synthesis of Continuous Silicon Carbide Fiber with High Tensile Strength and High Young’s Modulus, Part 1: Synthesis of Polycarbosilane as Precursor”,J. Mat. Sci.,13, 2569 (1978).
Yajima, S., Hayashi, J. and Omori, M., “Continuous Silicon Carbide Fiber of High-Temperature Strength”,Chem. Letters, 931 (1975).
Yajima, S., Hayashi, J., Omori, M. and Okamura, K., “Development of Tensile Strength Silicon Carbide Fiber Using an Organosilicon Polymer Precursor”Nature,261, 683 (1976).
Yajima, S., Okamura, K. and Hayashi, J., “Structural Analysis in Continuous Silicon Carbide Fiber of High Tensile Strength”Chem. Letters, 1209 (1975).
Yajima, S., Omori, M., Hayashi, J., Okamura, K., Matsuzawa, T. and Liaw, C, “Simple Synthesis of the Continuous SiC Fiber with High Tensile Strength”,Chem. Letters, 551 (1976).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kang, PH., Yang, HS. Synthesis and characterization of poly(dimethylsilylene-diphenylsilylene) as a precursor to silicon carbide. Korean J. Chem. Eng. 15, 585–589 (1998). https://doi.org/10.1007/BF02698982
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02698982