▎ 摘　　要

NOVELTY - Preparing high-performance graphene film involves diluting and dispersing the block of graphite oxide filter cake with a solid content of 40-50% in deionized water, then adding an alkaline solution to form a graphite oxide mixed solution with a pH of 6-8.5, and performing pre-dispersion, ultra-high pressure homogenization treatment and defoaming treatment on the mixed liquid in sequence to obtain a graphene oxide defoaming solution with uniform distribution of graphene oxide particles. The homogeneous defoamed graphene oxide defoaming solution is coated, dried, wound and segmented, and then the obtained graphene oxide sheets are stacked. The adjacent graphite graphite paper is set between the sheets, and then placed in a vacuum oven for baking to remove water and preliminary reduction pretreatment. USE - Batch preparation method for preparing high-performance graphene film used for preparing antenna (claimed). ADVANTAGE - The method improves the coating efficiency and realizes the batch preparation of the graphene film, and ensures high degree of continuity. DETAILED DESCRIPTION - Preparing high-performance graphene film involves diluting and dispersing the block of graphite oxide filter cake with a solid content of 40-50% in deionized water, then adding an alkaline solution to form a graphite oxide mixed solution with a pH of 6-8.5, and performing pre-dispersion, ultra-high pressure homogenization treatment and defoaming treatment on the mixed liquid in sequence to obtain a graphene oxide defoaming solution with uniform distribution of graphene oxide particles. The homogeneous defoamed graphene oxide defoaming solution is coated, dried, wound and segmented, and then the obtained graphene oxide sheets are stacked. The adjacent graphite graphite paper is set between the sheets, and then placed in a vacuum oven for baking to remove water and preliminary reduction pretreatment. The graphene oxide film is initially reduced after vacuum carbonization heat treatment to remove the remaining oxygen-containing functional groups, and then ultra-high temperature graphitization is performed in an inert environment to obtain a graphene film. The graphene film is compressed after graphitization, and the compressed graphene film is transferred to the substrate to finally obtain a high-performance graphene film.