Common applications for this light, strong, and rigid plastic are aircraft, automobiles, infrastructure components, sporting goods, and electronic devices. There is a great need to boost the heat dissipation of CFRP as a structural material in advanced mobility services collectively called CASE (for connected, autonomous, shared, and electric) to prevent batteries from deteriorating because of heat building up during charging. CFRP is less thermally conductive than aluminum alloys and other metals. This has prompted efforts to enhance heat dissipation by employing external or internal graphite sheets offering excellent thermal conductivity and heat dissipation and diffusion. These sheets are easy to fracture, scatter, and damage, however, compromising the performance of CFRP.

Over the years, Toray has used proprietary technology to develop and apply highly rigid porous CFRP forming three-dimensional networks with short carbon fibers. On this occasion, Toray created a heat-conductive layer employing a porous CFRP support that safeguards the graphite sheets. Laminating CFRP prepreg on this thermally conductive layer enabled Toray to attain a thermal conductivity above that of metals, which would be impossible with regular CFRP, without compromising the mechanical properties and quality of that material. Prepreg is a sheet-like intermediate material made by impregnating fibers with resin to reinforce them. Common applications are aircraft fuselages, main and tail wings, and other primary structural components, as well as golf club shafts, fishing rods, tennis racket frames, and other sports equipment.