EPOXY COMPOSITES USING VAPOR-GROWN CARBON-FIBER FILLERS FOR ADVANCED ELECTROCONDUCTIVE ADHESIVE AGENTS

The basic properties of epoxy-based adhesive agents using vapor-grown carbon fibers (VGCF's) are investigated in comparison with conventional carbon fillers such as PAN-based carbon fibers, pitch-based carbon fibers, natural graphite powder, and electroconductive carbon black. The room temperature resistivity of VGCF's adhesive is 2.7 x 10(-1) OMEGA . cm, and such a low value is difficult to achieve using other kinds of carbon fillers. The adhesive strength of the VGCF-based sample is higher than that of the matrix epoxy, when the VGCF's contents are up to 30 Phr (part per hundred resin). This high performance of VGCF's adhesives reflects the high conductivity and ultrafine fibrous form of VGCF's