Thermal Conduction of Expanded Graphite-Based Carbon-Carbon Composite

摘要

Expanded graphite is compressed into the blocks with different densities. Chemicalrnvapor infiltration (CVI) and the phenolic resin impregnation/carbonization process werernused to strengthen the compressed EG. Then the low-density EG-based carbon/carbonrncomposite was obtained. The morphologies of the composites were observed and the thermalrnconductivity was measured. The data show that the thermal conductivity of the compositesrnreduces with the increase of temperature and increases with the increase of the density. Atrn1000℃ , the thermal conductivity of the composite along the direction paralleled to therncompression force, strengthened by the resin impregnation/carbonization process withrndensity of 0.142g/cm~3 is less than 1 W/m·K.