▎ 摘　　要

NOVELTY - High thermal conductivity polyimide composite material comprises 50-85% polyimide resin, 5-30% modified carbon fiber, 3-10% carbon nanotubes and 3-10% graphene. The carbon nanotubes are copper-plated carbon nanotubes. The modified carbon fiber is coupling agent-modified carbon fiber. USE - High thermal conductivity polyimide composite material. ADVANTAGE - The material improves mechanical properties and thermal conductivity rate to 40-60%. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the high thermal conductivity polyimide composite material comprising mixing to obtain premix, melting, extruding and pelletizing.