Ceramics-Silikáty 40, (3) 109 - 114 (1996)

A novel method of carbon-carbon composite manufacture was designed and the possibility of its realization was proved. It is based on the continuous heat treatment at 450 - 500°C of coal tar pitch which is soaked into carbon fibre bundle and on the subsequent hot press moulding at 400 - 600°C. It can bring a significant shortening of the manufacturing cycle and cost reductions can thus be expected. The unidirectional composites prepared by this method reveal properties comparable to those manufactured by other routes utilizing the pitch-based matrix. They reach flexural strength up to 350 MPa (or up to 400 MPa when using filtered pitch), Young's modulus 130 - 150 GPa and density up to 1.75 g.cm⁻³. Furthermore, the described method promises an easy realization at the industrial level and advantageous incorporating into the carbon fibre production process.