▎ 摘　　要

NOVELTY - Preparing graphene heat-dissipating masterbatch involves adding trishydroxymethylaminomethane and hydrochloric acid to deionized water to prepare a buffer with a pH of 8.5, then adding dopamine hydrochloride, mixing well, adding graphene and dispersant, and stirrring well, and obtaining graphene-containing dopamine immersion liquid, first mixing dopamine immersion liquid with the lignin-modified mesoporous high thermal conductivity microspheres, and then repeatedly contacting by spray collision, and by dopamine oxidative self-polymerization, the dopamine is driven. The graphene contained on the surface of the mesoporous high thermal conductive microspheres is formed into a composite layer and dried to obtain a composite thermally conductive particle containing graphene. The vinylidene fluoride, perfluoropropylene, emulsifier deionized water is added to the reaction vessel. USE - Method for preparing graphene heat-dissipating masterbatch for rubber. ADVANTAGE - The method enables to prepare graphene heat-dissipating masterbatch which do not need to add a relatively expensive small molecule stabilizer or a special organic solvent, uniform dispersion is achieved in rubber, which fully exert the excellent thermal conductivity of graphene sheets and improve the heat dissipation performance of rubber. DETAILED DESCRIPTION - The vinylidene fluoride, perfluoropropylene, emulsifier deionized water is added to the reaction vessel, then graphene-containing composite thermally conductive particles are added, and then an initiator is added to the vinylidene fluoride. The polymerizable monomer, perfluoropropene is heated to 80-100 degrees C for polymerization for 3-4 hours to obtain a composite emulsion. The fluororubber formed by the reaction is used as a masterbatch carrier, and finally spray granulation is carried out to obtain a high heat-dissipating rubber masterbatch.