Preceramic polycarbosilane derivatives
作者： Gary Thomas Burns , Gregg Alan Zank , Lu Paul Pu-Yuan
DOI:
关键词: Phosphorus pentachloride 、 Chlorine 、 Chemistry 、 Antimony pentachloride 、 Organic chemistry 、 Reagent 、 Phosphorus pentabromide 、 Pyrolysis 、 Radical initiator 、 Bromine
摘要: PRECERAMIC POLYCARBOSILANE DERIVATIVESABSTRACT Halogenated polycarbosilanes are prepared by reacting a polycarbosilane containing at least 0.1 weight percent Si-H groups with halogenating reagent selected from the group consisting of chlorine, bromine, phosphorus pentachloride, pentabromide, antimony N-chlorosuccinimide, N-bromosuccinimide, sulfonyl chloride, and mixtures CHeXf free radical initiator where e is 0 or 1, f 3 4, sum (e + f) X chlorine bromine. The halogenated polycarbo-silanes can be further treated to produce other derivatized polycarbosilanes. converted silicon carbide ceramic materials pyrolysis elevated temperatures under an inert atmosphere.
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