PRODUCTION METHOD OF CONDUCTIVE RESIN COMPOSITION MASTER BATCH AND MASTER BATCH

摘要

PROBLEM TO BE SOLVED: To provide a resin composition having high conductivity characteristics and excellent mechanical characteristics with a small addition amount of a conductive material.SOLUTION: A production method of a conductive resin composition master batch comprising carbon fiber and a thermoplastic resin is provided, which includes a step of adding carbon fiber aggregates having a bulk density of 0.03 to 0.3 g/cmby 6 mass% or more and 50 mass% or less to 100 mass% of a resin composition, and kneading the mixture. The carbon fiber substantially forms secondary aggregates; and the carbon fiber is carbon nanotube. The thermoplastic resin is at least one resin selected from ABS resin, AES resin, ASA resin, AS resin, HIPS resin, styrene-acrylonitrile copolymer, polyethylene, polypropylene, polycarbonate (PC), polyphenylene ether (PPE), and polyamide (PA).