Preparation and properties of bamboo charcoal/phenolic resin conductive composite

The bamboo charcoal/phenolic resin conductive composite were prepared by compression molding technology, using bamboo charcoal carbonized at 900 ℃ as the conductive fillers, resin as the binder and carbon black as the additive. The influences of the particle size, resin content, carbon black content, molding pressure and curing temperature on the properties of the composite were investigated. The results show that the flexural strength of the composite increases as the content of phenolic resin increases, and the conductivity of the composite at first increases and then decreases sharply with increasing of the resin content. Increasing molding pressure can improve the conductivity and flexural strength of composite simultaneously. It is beneficial to improve the conductivity of composite by increasing the particle size of bamboo charcoal, black content and curing temperature, but the flexural strength of the composite changes. The optimum particle size, resin content, carbon black content, molding pressure and curing temperature should be ≤75 μm, 30%, 7.5%, 280 MPa and 180 ℃, respectively.