Light-weight chopped carbon fiber/carbon composites with low thermal conductivity fabricated by vacuum filtration methodology: Fullerenes, Nanotubes and Carbon Nanostructures: Vol 0, No 0

Summary

Light-weight carbon fiber/carbon composites (CFC) are extensively utilized in photo voltaic silicon furnace, semiconductor lengthy crystal furnace and different high-temperature gear resulting from its superior low thermal conductivity, low growth coefficient, excessive purity, good mechanical properties, and excessive temperature resistance. On this paper, the light-weight chopped CFC was ready by the tactic of liquid section dispersion of chopped carbon fibers-vacuum filtration-curing molding-high temperature carbonization and graphitization. The thermal conductivity of light-weight chopped CFC with completely different densities (0.12, 0.16 and 0.18 g/cm³) was studied, and the thermal conductivity of light-weight chopped CFC at excessive temperature was additionally studied. The outcomes present that the thermal conductivity (1000 °C) of the chopped CFC progressively will increase with the growing density from 0.179 W/(mK) (0.12 g/cm³) to 0.190 W/(mK) (0.16 g/cm³), 0.282 W/(mK) (0.18 g/cm³), indicating that with the growing density, the thermal conduction path of the carbon fiber will increase, the thermal conductivity of the CFC materials will increase, after which the thermal insulation efficiency decreases. As well as, with the growing temperature, the phonon vibration will increase, the thermal conductivity of the CFC materials additionally will increase, after which the thermal insulation efficiency decreases.