1,4-ブタンジオールとメチルトリエトキシシランを用いたSi-C-O系セラミックスの熱分解による合成及び評価

概要

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Si-C-O ceramics were prepared by the interchange reaction of methyltriethoxysilane (MTES) with 1,4-butanediol (BD) and the subsequent pyrolysis. The structures of gels before and after pyrolysis were analyzed by NMR and IR. Carbon-13 CP/MAS NMR spectrum of the gel indicated the interchange reaction with the ethoxy groups of precursor, MTES. Silicon-29 MAS NMR spectra of the pyrolyzed gel revealed that SiC_2O_2 and SiC_4 units existed upon higher temperature heat treatment. The cleavage of BD and the formation of free carbon phase in the pyrolyzed products were certified through TG-MS and ^13C MAS NMR. ^29Si MAS NMR, IR and XRD indicated the reaction of the free carbon with silica to form β-SiC above 1300℃.
社団法人日本セラミックス協会の論文
2002-12-01