▎ 摘　　要

NOVELTY - Preparing graphene electromagnetic shielding material involves mixing graphite, graphene and carbon fiber materials according to a mass ratio of 1-2:1-8:1-2, uniformly mixing to obtain mixture; treating the mixture under the conditions that the ultrasonic oscillation frequency is 100-200 degrees C; uniformly stirring the mixture after ultrasonic oscillation with fluorinated ethylene propylene (FEP) copolymer and N-methyl pyrrolidone (NMP) at the temperature of 300-500 degrees C, where the mass ratio of the mixture after ultrasonic oscillation to FEP and NMP is 1-3:20.5-100, or 1-20:50-500. The mixture is stirred uniformly, allowed to stand at a temperature of less than 270 degrees C, and naturally solidified to get desired product. USE - Method for preparing graphene electromagnetic shielding material used for producing outer material for cables (claimed). ADVANTAGE - The method uniformly mixes the three materials, and convert graphene from the two-dimensional material into three-dimensional products, realize more excellent shielding effect, effectively control the content of impurities in the process of cutting, solve the impurity problem in batches, and improve the working efficiency of the material processing.