▎ 摘　　要

NOVELTY - A polyimide/graphene nano-composite material is prepared by mixing graphene and aromatic dianhydride or diamine monomer (0.1-1 wt.%); adding N,N-dimethylacetylamide, N,N-dimethylformamide or methyl pyrrolidone; subjecting mixture to ultrasonic dispersion for 30 minutes; cooling to room temperature; adding dianhydride monomer; stirring at room temperature for 6-24 hours; heating at 100 degrees C for 30 minutes, 180 degrees C for 30 minutes, 250 degrees C for 1 hour, and 350 degrees C for 2 hours; and cooling to room temperature. USE - Method of preparing a polyimide/graphene nano-composite material for durable structural materials or electric conducting materials. ADVANTAGE - The method prepares product having good dispersibility.