ホットプレス法による一方向長繊維強化炭素-炭素 (C/C) 複合材料の作製とその強度

概要

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Carbon fiber-carbon matrix (C/C) composites were fabricated using a simple hot press process. The matrix was prepared from a fine pulverized coke mixed with a carbonaceous bulk mesophase (BM). The fibers were epoxy-resin-impregnated unidirectional long carbon fibers (UD fibers). The maximum temperature and pressure in the hot press process were 600℃ and 49MPa, respectively. The resalts were as follows : (1) When one type of fiber (UD-1) was used, the maximum strength was 119 MPa at a BM content of 70% in the matrix and the volume fraction of the fiber, V_f=30%. When reinforced by another type of fiber (UD-2), the maximum strength reached 130 MPa at a BM content of 80% and a V_f=46.4%. Both the strengths exceeded that of a commercial C/C composite. (2) The composites reinforced by UD-2 showed a maximum strength which decreased to 80 MPa after a secondary heat treatment at 700℃ to 1500℃.
社団法人日本鉄鋼協会の論文
1988-03-01