▎ 摘　　要

NOVELTY - Preparing graphene composite coating comprises mixing 1-30 mass% graphene, 10-50 mass% conduction auxiliary agent, 0-50 mass% ink conditioner, 40-80 wt.% solvent, and making each component fully disperse and obtaining graphene composite coating, where, the conduction aid comprises metal nanoparticle, at least one of the conductive polymers, the solvent is deionized water or an organic solvent. USE - The method is useful for preparing and application of the graphene composite coating, in flexible electrothermal applications for screen and inkjet printing. ADVANTAGE - The method: provides the graphene composite coating, which can be directly printed on the flexible electrothermal applications for screen and inkjet printing on the precise position of materials (e.g. plastic films or artificial leather), can produce high-quality graphene composite coatings on a large scale, and have controllable size and layer number, the advantages of controllable reduction degree, the formula can be adjusted to adapt to different substrates, such as paper, polymer film, textile, glass and metal, with wide applicability; and utilizes the hot pressing technology to enhance the adhesion of graphene and metal nanoparticles adhesion and stability, enhanced electrical conductivity of graphene composite coated circuits. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an application of the graphene composite coating obtained by the method comprising (1) setting circuit patterns on the substrate, (2) printing the graphene composite coating on the circuit pattern of the base material to form a graphene composite coating circuit, where the number of printing layers is 3-5, and drying, and (3) hot pressing the dried graphene composite coating circuit.