Chapter 8. Silylene-Acetylene Polymers as Precursors to SiC Fibers

  1. John B. Wachtman Jr
  1. M. K. Meyer1,
  2. M. Akinc1,
  3. S. I-Maghsoodi2,
  4. X. Zhang2 and
  5. T. J. Barton2

Published Online: 28 MAR 2008

DOI: 10.1002/9780470313831.ch8

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8

How to Cite

Meyer, M. K., Akinc, M., I-Maghsoodi, S., Zhang, X. and Barton, T. J. (2008) Silylene-Acetylene Polymers as Precursors to SiC Fibers, in Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313831.ch8

Author Information

  1. 1

    Department of Materials Science and Engineering Iowa State University Ames, IA 50011

  2. 2

    Department of Chemistry Iowa State University Ames, IA 50011

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1991

ISBN Information

Print ISBN: 9780470375099

Online ISBN: 9780470313831

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Keywords:

  • polymers;
  • ceramic;
  • pvrolysis;
  • monolithic;
  • polydisilylazane

Summary

The use of sitylene-acetylene polymers ((RR'SiC[TRIPLE BOND]C)n) as precursors to SiC fibers has been investigated. A number of polymers with different R and R groups have been synthesized and characterized with respect to molecular weight, ceramic yield, and oxidative stability of the ceramics at elevated temperatures. Pyrofysis of polymers was followed by FTIR, XRD, and TGA. All of the polymers were found to be soluble in a variety of solvents and meltable below 200°C. Several of the polymers, especially the ones with large cyclic R and R groups, could be melt spun into continuous, uniform, 10 m̈m diameter fibers. Short sections of fibers were UV crosslinked and pyrolyzed to ceramic fibers.