PRODUCTION OF CARBON FIBER-REINFORCED THERMOPLASTIC RESIN

摘要

PURPOSE:To obtain the titled resin improved in electrical conductance and sliding characteristics, by impregnating a thermoplastic resin in a carbon fiber mat prepared by making with fiber formed through a spiral flow process infusible followed by carbonization. CONSTITUTION:First, a viscous pitch is delivered through olifice, while blowing high-speed hot gas flow linearly through three or more jet nozzles located at an interval in the circumferential direction around said olifice, to make the pitch into fibrous and spiral form followed by drawing to convert to fiber. The resulting pitch fiber is made infusible followed by carbonization to make a bulky carbon fiber mat with a density 0.008-0.08g/cm<3>. This mat is impregnated with such an amount of a thermoplastic resin (e.g. polyethylene terephthalate) that the resulting content of the carbon fiber falls between 0.5-60wt% to make a sheet. This sheet is then subjected to forming process.