Effect of the Density to the Electrical Conductivity of Carbon-Carbon Composite Made of the Mixture of Organic Waste Carbon

This paper reveals the results of research about the electric conductivity of carbon-carbon composites made of a mixture of carbon particles of coal waste and coconut shell waste carbon. This study experimentally was initiated by mixing coal waste carbon powder and coconut shells waste carbon powder in the composition ratio of 60/40, 70/30 and 80/30 %weight, the mesh particle size was of 100, 150, 200 and 250, mixed with coal tar pitch with ratio of 70:30% in weight at a temperature of 100 °C, compacted in a hot of 100 °C with the pressure of 778.75 bar, compacted in a hot of 100 °C with the pressure of 778.75 bar, processed in the pyrolysis at temperatures of 500 °C. Four-point probe test results showed that the higher the percentage of carbon content of coal powder in the composite had increased the electrical conductivity of carbon-carbon composites. The larger the densities increase the electrical conductivity value of the composite. The highest electrical conductivity value is 3.40 Siemens/m was shown by the composites with the density of 2 gram/cm 3 , and this composite was made of the composition ratio of 80:20 %weighting and a particle size of 150 meshes.