▎ 摘　　要

NOVELTY - The method involves placing (S1) natural graphite in a beaker, and addding dilute hydrochloric acid solution. The graphite oxide is produced (S2), concentrated sulfuric acid is added to beaker. The sodium nitrate and potassium permanganate are added. The hydrogen chloride solution and distilled water are utilized for washing and drying to obtain graphite oxide. The graphite oxide is dispersed (S3) in distilled water, stirred, and dispersed by ultrasonic wave to obtain a stable dispersion liquid. The described graphene oxide dispersion liquid is get (S4) and heated in water bath, and the reducing agent is slowly added. The dispersibility and activation of graphene are improved (S5) by oxidizing, sensitizing and activating graphene, and the surface of graphene is copper-plated to complete the modification of graphene. The graphene after copper plating is placed (S6) in the mold, and the production of the graphene heat dissipation film is completed by cold pressing and heat treatment. USE - Preparation method of graphene radiating film for electronic device. ADVANTAGE - The radiating efficiency and thermal conductivity of the graphene radiating film are improved. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of the preparation method of graphene radiating film for electronic device. (Drawing includes non-English language text). Step for placing natural graphite in a beaker (S1) Step for producing graphite oxide (S2) Step for dispersing graphite oxide in distilled water (S3) Step for getting described graphene oxide dispersion liquid and heating in water bath (S4) Step for improving dispersibility and activation of graphene (S5) Step for placin graphene after copper plating in the mold (S6)