2563 ポリマー含浸焼成法によるSiC繊維強化マイクロポーラスSiC耐熱複合材料の開発(S25-2 多孔質材(2),S25 新機能多孔質材料の創製と評価)

概要

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This study aims to develop the heat-resistant composite materials with high reliability in strength. The adoption of powder space holder (PSH) method into polymer impregnation and pyrolysis (PIP) process was proposed to reduce predominant defects formed in the firing process of SiC precursor polymer. The effects of size and fraction of space holding particle made of polymethylmethacrylate on the pore formation behavior were mainly investigated. Consequently, SiC porous materials and the fibrous composite materials with homogeneous open porous structure were successfully obtained without significant defects. This is surely due to an efficient gas purge and a stable shrinkage by introducing the porous structure in SiC matrix.
2007-09-07