▎ 摘　　要

NOVELTY - Graphene-based conductive coating comprises 10-15 pts. wt. resin matrix, 2-6 pts. wt. multi-component composite conductive filler, and 75-95 pts. wt. organic solvent. The preparation of multi-element composite conductive filler comprises (a) adding graphene oxide and γ-(2,3-glycidoxy)propyltrimethoxysilane into absolute ethanol, ultrasonically dispersing for 30 minutes, refluxing reaction at 80°C for 4 hours, adding deionized water during the reaction, suction filtering; (b) adding the doped nanopowder into the mixed solution of deionized water and isopropanol, adding γ-aminopropyltriethoxysilane while stirring, ultrasonically dispersing for 30 minutes, refluxing at 70°C for 4 hours, cooling, washing, centrifuging and drying to obtain modified doped nanopowder; (c) dispersing the grafted graphene oxide in N,N-dimethylformamide, ultrasonically dispersing for 30 minutes, adding modified doped nanopowder, and ultrasonically dispersing for 30 minutes. USE - The graphene-based conductive coating is useful to an electronic appliance, a building, a chemical device, and military affairs. ADVANTAGE - The conductive coating has excellent electrical conductivity, and reduces heat transfer and diffusion, and ensures excellent electrical conductivity while endowing the final prepared coating with excellent thermal insulation properties. DETAILED DESCRIPTION - Graphene-based conductive coating comprises 10-15 pts. wt. resin matrix, 2-6 pts. wt. multi-component composite conductive filler, and 75-95 pts. wt. organic solvent. The preparation of multi-element composite conductive filler comprises (a) adding graphene oxide and γ-(2,3-glycidoxy)propyltrimethoxysilane into absolute ethanol, ultrasonically dispersing for 30 minutes, refluxing reaction at 80°C for 4 hours, adding deionized water during the reaction, suction filtering, washing the filter cake with absolute ethanol and deionized water three times respectively, and vacuum-drying the filter cake at 65°C for 24 hours to obtain grafted graphene oxide; (b) adding the doped nanopowder into the mixed solution of deionized water and isopropanol, adding γ-aminopropyltriethoxysilane while stirring, ultrasonically dispersing for 30 minutes, refluxing at 70°C for 4 hours, cooling, washing, centrifuging and drying to obtain modified doped nanopowder; (c) dispersing the grafted graphene oxide in N,N-dimethylformamide, ultrasonically dispersing for 30 minutes, adding modified doped nanopowder, and ultrasonically dispersing for 30 minutes, preparing the mixed solution, placing in an oil bath at 105°C for 5 hours, filtering the reaction product with suction and washing for 3 times with absolute ethanol and deionized water respectively, and vacuum drying at 65°C for 20 hours. An INDPENDENT CLAIM is also included for preparing the graphene-based conductive coating, comprising slowly adding the resin matrix into the organic solvent, stirring uniformly, allowing to stand for 4 hours, adding multiple composite conductive fillers, and stirring at high speed for 10 minutes.