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Synthesis of polysilane polymer precursors and their pyrolysis to silicon carbides

✍ Scribed by Maher A. Abu-eid; R. Bruce King; Abraham M. Kotliar

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
251 KB
Volume
28
Category
Article
ISSN
0014-3057

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✦ Synopsis

Abstraet---Organosilane polymers of the type [R t R2Sik were prepared by dechlorination of RI R2SiC12 (R t = CH3; R 2 = H, C2H5, C3H7, C4H9, C6HII, CsHI7 or C6H5) with sodium in toluene as solvent. The polymers were characterized by i.r., NMR and thermal analysis. The decomposition temperature, yield, solubility, appearance were found to depend strongly on molecular structure. The pyrolysis of polymethylsilane was found to give a 60% ceramic yield after thermal processing at 750 Β°, suggesting its potential for use as a precursor to SiC ceramics.

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