| 摘要 |
PURPOSE:To produce a carbon/carbon composite material, capable of graphitizing at a high level and having excellent physical and mechanical characteristics by using monofilamentous or fine-cut carbon fiber. CONSTITUTION:The carbon/carbon composite material is obtained by dispersing carbon fiber having 10-1000 ratio of the length to the diameter of fiber (aspect ratio) in a solvent containing a readily graphitizable resin dispersed or dissolved therein, forming and providing sheets of carbonaceous paper having <=2mm thickness, hot-pressing the resultant carbonaceous paper, converting the carbonaceous paper into a composite material of the carbon fiber with the readily graphitizable resin, performing infusibilizing treatment or without carrying out the infusibilizing treatment, heat-treating the composite material at >=500 deg.C temperature or further Iaminating at least two or more sheets of the formed carbon/carbon composite materials, hot-pressing the laminate under reduced pressure, heat-treating the pressed laminate at >=500 deg.C temperature and, as necessary, graphitizing the heat-treated laminate. |
