ホットプレス法によるクロス織炭素繊維強化炭素 (C/C) 複合材料の作製とその強度に及ぼす含浸樹脂の影響

概要

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Carbon fiber-carbon matrix (C/C) composites were fabricated using a simple hot process. The reinforcements were carbon cloth prepreg sheets impregnated with three kinds of resin, that is, coal tar pitch, epoxy and phenol. The matrix was a fine pulverized coke mixed with a carbonaceous bulk mesophase (BM) for a binder. The maximum temperature and pressure during the hot-press were 600℃ and 49 MPa, respectively. The results were as follows : (1) The strengths of the composites were significantly affected by three factors : the kinds of impregnated resin, the fiber volume fraction (V_f), and the BM content in the matrix. The maximum strength of 83 MPa was attained in the composite reinforced with the coal tar pitch prepreg sheets at a BM content of 50% and a V_f=40%. With the other types of prepreg sheets, the maximum strengths were much less than 83 MPa regardless of V_f. (2) The maximum strengths of the composites reinforced with the coal tar pitch and epoxy resin prepreg sheets were decreased by a secondary heat treatment at 800℃ to 1500℃.
社団法人日本鉄鋼協会の論文
1988-03-01