Effects of Needle Coke Conductive Additive on the Performance of Graphite/Resin Composite Plates

摘要

In this manuscript, the graphite/resin composite plates were prepared via a facile ball milling strategy. The needle coke (NC) as a conductive additive was studied on effects of treated by ball milling on the electrical conductivity, mechanical property of the composite plates. All the characterizations showed that after ball milling, the NC particles have smaller particle size, and more uniform particle size distribution, which enhanced the interfacial adhesion between particles and resin. Due to the difference in shape and size between the auxiliary conductive filler and flake graphite, the addition of NC particles can easily fill the gap between flake-like graphite and phenolic resin. The uniform distribution of these fillers improves the cross-linking density, and the conductive path was added between the flake-like graphite and the resin, which improved the electric conductivity of composit plate from 26.32 S cm(-1) to 149.23 S cm(-1). Such a prominent performance was attributed to the synergistic effects between the uniformly incorporated NC and the graphite/resin composite adhesive system.