▎ 摘　　要

NOVELTY - The preparation method of modified graphene involves (S1) adding graphene to solvent, and ultrasonically stirring for 20-30 minutes to obtain graphene suspension, (S2) adding surface treatment agent (I) having 3-5 wt.% graphene to the graphene suspension, where the surface treatment agent (I) comprises saturated fatty acid saponification solution and alkylphenol polyoxyethylene ether sulfate, and ultrasonically stirring for 30-60 minutes to obtain surface-modified graphene (I), (S3) suction-filtering the surface-modified graphene (I), drying and grinding to obtain graphene powder, and (S4) transmitting the graphene powder to a high-speed mixer, controlling the material temperature at 60-80 degrees C, adding surface treatment agent (II) consisting of distearyl ethyl epoxide and bisamide sulfobetaine ester, adding surface treatment agent in an amount of 1-3 wt.% of graphite, uniformly stirring, discharging, and drying. USE - Preparation method of modified graphene. ADVANTAGE - The method enables preparation of modified graphene with excellent hydrophobic oleophilicity and which prevents the agglomeration between graphene particles, quickly and uniformly disperses the graphene in the other system, and improves the compatibility between the graphene and polymer.