Effect of the molding pressure on properties of pitch-based carbon composites reinforced with granular cokes

Pitch-based carbon composites reinforced with granular cokes(PCCs)were fabricated under atmospheric environment using an ordinary hydraulic press, a new mould pressing and semi-jcarbonization shaping technology. The effect of the molding pressure on the volume density and the compressive strength of the PCCs was studied in detail. The correlation between the density and the compressive strength was discussed. The results show that the density and the compressive strength increase greatly with the increase of molding pressure within a certain limit. However, when the molding pressure continues to increase, though the volume density still keeps increasing, the compressive strength decreases suddenly. The compressive strength is not always directly proportional to the increase of the volume density.