▎ 摘　　要

NOVELTY - A loudspeaker diaphragm preparation method involves doping graphene material using polyetherimide (high molecular weight polymer) as substrate by high-temperature fusion method to form polyetherimide-graphene material mixed slurry. The mixed slurry is cooled and solidified by casting followed by pressing into composite loudspeaker diaphragm. USE - Method for preparing loudspeaker diaphragm. ADVANTAGE - The method enables preparing loudspeaker diaphragm with high electroacoustic efficiency and strong toughness in a simple manner.