▎ 摘　　要

NOVELTY - A graphene metal surface treating agent comprises 0.003-0.030 mass% nanographite, 2-10 mass% fluorozirconate, 2-10 mass% citric acid, 0.5-2.0 mass% EDTA and balanced water. USE - Graphene metal surface treating agent for pre-treatment production line of automobile, aerospace, war industry, home appliances, metal piece of engineering machinery industry. ADVANTAGE - The agent has high bonding force and corrosion resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the graphene on metal surface treating agent which comprises adding water in reaction kettle, heating to 90-100 degrees c, adding nano graphene, and stirring at normal pressure for 8-10 hours; adding fluorozirconate, stirring and reacting for 1-2 hours, and stirring at normal pressure for 8-10 hours; adding citric acid, stirring and reacting for 0.5-1 hours; and finally adding ethylene, stirring for 8-10 hours to obtain metal surface treating agent.