Preprints of Annual Meeting of The Ceramic Society of Japan
Preprints of Fall Meeting of The Ceramic Society of Japan
Preprints of Annual Meeting of The Ceramic Society of Japan, 2004
Session ID : 2I04
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Preparation and Pyrolysis of from Cross-linked Polymethylsilane via Hydrosilylation
*Tomohiro OgawaYoshie KaifuYuko UchimaruHiroyuki SudaKenji HarayaYoshiyuki Sugahara
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Abstract
Pyrolysis products from p-diethynylbenzene-modified polymethylsilane was studied. Polymethylsilane (PMS) was modified by platinum-catalyzed hydrosilylation with p-diethynylbenzene at room temperature to form a brown-colored viscous liquid. The ceramic residues prepared via pyrolysis of modified PMS were characterized via infrared (IR) spectroscopy, solid-state 29Si nuclear magnetic resonance spectroscopy with magic angle spinning technique (solid-state 29Si MAS NMR) and X-ray diffraction (XRD). IR spectroscopy showed that mineralization process significantly proceeded in the temperature range from 600°C to 800°C. XRD analysis suggested that the crystallization of b-SiC occurred above 1200°C. Solid-state 29Si MAS NMR suggested that a ceramic residue pyrolyzed at 1200°C was mainly composed of an SiC4 environment.
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© The Ceramic Society of Japan 2004
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