▎ 摘　　要

NOVELTY - Graphene complex conductive coating comprises 5-80 wt.% resin, 0.1-5 wt.% graphene, 2.5-20% copper powder, 7.2-30% silver powder, 0.55-3 wt.% dispersant, 17-40 wt.% organic solvent, 0.3-1 wt.% anti-settling agent, 0.3-1% leveling agent and 0.1-1 wt.% crosslinking agent. USE - The conductive coating is useful in electronics and electrical appliances; and in chemical industry (all claimed). ADVANTAGE - The conductive coating meets the requirements of conductive performance and avoids the use of pure silver and reduces costs. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing a graphene complex conductive coating, comprising (i) adding graphene to a slow-drying solvent, adding 2% PVP dispersant, stirring by magnetic stirrer at 60-80 degrees C preliminary stirring and dispersing for 10-30 minutes, using ultrasonic equipment of ultrasound for 60-120 minutes, observing the morphology of graphene with scanning electron microscope (SEM) and observing the thickness of graphene with AFM at 1-10 nm to obtain solution A; (ii) adding the ultra-fine copper powder to the slow-drying solvent, 2% PVP dispersant, stirring the mixture and dispersing with a magnetic stirrer at 60-80 degrees C for 10-30 minutes, and ultrasonic for 60-120 minutes to obtain a solution B; (iii) adding ultra-fine silver powder to the slow-drying solvent, 2% PVP dispersant, and stirring the mixture for 10-30 minutes with a magnetic stirrer at 60-80 degrees C, and ultrasonic for 60-120 minutes by using an ultrasonic device to obtain the solution C; and (iv) adding the dispersant to acryl urethane under stirring, and add the solution A, solution B, and solution C to the acrylic urethane in order, adding the organic solvent, anti-settling agent, leveling agent, cross-linking agent, stirring at constant temperature 60-120 degrees C for 10-30 minutes and grinding for 2-3 times with a three-roll mill.