Preparation and Properties of CF/EP Composites with Low Density and High Thermal Conductivity
Carbon nanotube(CNT)and hollow glass beads(HGS)were added to epoxy resin(EP)to prepare carbon fiber(CF)/EP composites using a molding process.The results show that the addition of CNT and HGS can effectively reduce the density of the CF/EP composites,improve the mechanical properties and increase the thermal conductivity of the composites.When the mass ratio of CNT and HGS is 1∶4,the comprehensive performance of the composites is the best.Compared with CF/EP composites without CNT and HGS added,the density of this composite decreases by 8.8%,the flexural strength and flexural modulus increase by 22.0%and 30.1%respectively,the tensile strength increases by 8.9%,and the thermal conductivity increases by 87.1%.
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