MANUFACTURING METHOD OF FINE CARBON FIBER-CONTAINING RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of a fine carbon fiber-containing resin composition exhibiting excellent properties such as electric conductivity or the like by uniformly dispersing a fine carbon fiber in a thermoplastic resin at a stable compounding ratio. SOLUTION: The manufacturing method of the fine carbon fiber-containing resin composition comprising the fine carbon fiber dispersed and compounded in the thermoplastic resin comprises feeding the fine carbon fiber and the thermoplastic resin into a kneading extruder and kneading them, where the kneading extruder is set under the conditions that the cylinder temperature of the kneading extruder is such that the melt flow index of the thermoplastic resin is 10-30 under a load of 2.16 kg prescribed in JIS K 7210; that the residence time of the fine-carbon fiber-containing resin composition in the kneading extruder is 25-100 sec; and that the shear rate of a screw segment of the kneading extruder on the fine carbon fiber-containing resin composition is 10,000-30,000/sec. COPYRIGHT: (C)2007,JPO&INPIT