1010 カーボン/フェノール複合材の耐酸化性改善に対するナノ材料POSSの役割(S88-2 宇宙構造・材料(2),S88 宇宙構造・材料)

概要

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This paper describes the role of Polyhedral Oligomeric Silsesquioxane (POSS) nanomaterials in improving the oxidation resistance of carbon-carbon composites by matrix modification. It is expected that POSS containing composites will have improved oxidation resistance because, in a severely oxidizing environment, silicon and oxygen of the POSS oxidize to form silicon dioxide. Since silicon ceramics exhibit the most attractive thermal expansion compatibility with carbon composites, the protective silica layer will prevent the oxidation of the composite without adversely affecting its performance. Two types of POSS, octaisobutyl POSS (OIBP) and trisilanol phenyl POSS (TSPP) are incorporated in phenolic resin and the dynamic mechanical and thermal properties of the resultant composites are studied. POSS incorporated phenolic resin is then used for the preparation of carbon-carbon composites. It is found that in presence of POSS, the thermal stability of the composite is improved both in inert and oxidative environment.
一般社団法人日本機械学会の論文
2006-09-15