Novel polycarbosilazanes with Si?C and Si?N bonds in the main chain |
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| Authors: | E. Bacqué C. Richard J. P. Pillot M. Birot J. Dunoguès M. Pétraud C. Gérardin F. Taulelle |
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| Affiliation: | (1) Laboratoire de Chimie Organique et Organométallique, URA 35 (CNRS), Université Bordeaux I, 351 Cours de la Libération, 33405 Talence Cédex, France;(2) Centre d'Étude Structurale et d'Analyse des Molécules Organiques, Université Bordeux I, 351 Cours de la Libération, 33405 Talence Cédex, France;(3) Laboratoire des Matériaux Inorganiques, URA 1466 (CNRS), Université Paris VI, 4 Place Jussieu, 75262 Paris Cédex 05, France |
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| Abstract: | Novel polycarbosilazanes possessing Si–CH2 Si N linkage in their backbone are described. Their preparation involves thermal cross-linking of poly[(dimethylsilylene)-co-(1,3-dimethyl-1,3-disilazane)]s at 300 350 C. Thus, under controlled conditions, soluble and fusible preceramic polymrs were obtained. Upon pyrolysis, these materials gave good yields of silicon carbonitride-based ceramics containing low free carbon percentages and controlled nitrogen proportions. |
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| Keywords: | Polycarbosilazane thermal cross-linking preceramic polymer silicon carbonitride |
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