固体NMR考察有机硅聚合物的热解过程

SOLID-STATE NMR EXAMINATION ON THE PYROLYSIS OR ORGANIC SILICON POLYMERS

应用２９Ｓｉ和１３Ｃ固体ＮＭＲ方法考察了几种有机硅聚合物前驱体热解制备ＳｉＣ陶瓷的过程．通过２９Ｓｉ和１３ＣＮＭＲ谱分析了热解产物的结构．结果表明聚碳硅烷及其氧化交联聚合物前驱体在高温下的热解可以获得ＳｉＣ陶瓷相．

si and 13cMAS NMR methods have been applied to examine the products in the pyrolysis of several kinds of organic silicon polymers for preparing SiC ceramic.Their structures have been analysed by means of 29Si and 13C MAS NMR spectra.The results indicate that the SiC phase can be obtained from the pyrolysis of PC and PCO polymer precursors.