Formation of organosilicon compounds 115: the applicability as precursors for β-SiC of carbosilanes resulting from the gas phase pyrolysis of methylsilanes

D Tögel, A Antony, J Bill, P Scheer, A Eichhöfer…

Index: Toegel; Antony; Bill; Scheer, Petra; Eichhoefer; Fritz Journal of Organometallic Chemistry, 1996 , vol. 521, # 1-2 p. 125 - 131

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Abstract

The thermal properties of polycarbosilanes from the gas phase pyrolysis of SiMe4, Me3SiCl, Me2SiCl2 and the polymeric (Me2Si CH2) n has been investigated. They decompose above 400° C to form volatile methylsilanes, H2, CH4, viscous carbosilanes and insoluble glassy products via condensation reactions. The ceramic yield is between 10 and 20 wt.% at about 900° C and falls to only a few weight per cent when heating is continued to 1000° C. ...

~92%

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