▎ 摘　　要

NOVELTY - Graphene pre-filming agent comprises 5-10 wt.% aqueous resin dispersion, 1-10 wt.% organosilane, 0.5-3 wt.% stabilizer, 0.1-2 wt.% graphite, 0.1-0.5 wt.% nano-zinc powder, 0.1-0.5 wt.% nitrate, 1-5 wt.% auxiliary solvent and rest is de-ionized water. The graphene pre-filming agent is prepared by adding 80-90 wt.% of total amount of required water to stirred tank and adding co-solvent, stirring and mixing uniformly to obtain mixed material. The method involves adding 60-70 wt.% of organosilane to the tank, and mixing with aqueous resin dispersion with agitation to obtain graphene dispersion. USE - Graphene pre-filming agent for surface treatment before metal coating (claimed), and for painting, powder painting or cathode electrophoretic coating such as metal processing production. ADVANTAGE - The graphene pre-filming agent is environmental-friendly, has high film forming efficiency, reaches purpose of temporary rust prevention before coating step, and excellent index. DETAILED DESCRIPTION - Graphene pre-filming agent comprises 5-10 wt.% aqueous resin dispersion, 1-10 wt.% organosilane, 0.5-3 wt.% stabilizer, 0.1-2 wt.% graphite, 0.1-0.5 wt.% nano-zinc powder, 0.1-0.5 wt.% nitrate, 1-5 wt.% auxiliary solvent and rest is de-ionized water. The graphene pre-filming agent is prepared by adding 80-90 wt.% of total amount of required water to stirred tank and adding co-solvent, stirring and mixing uniformly to obtain mixed material. The method involves adding 60-70 wt.% of organosilane to the tank, and mixing with aqueous resin dispersion with agitation to obtain graphene dispersion. The graphene dispersion is slowly added to tank, stirred and mixed, and is added with nano-zinc powder, and then stirred and mixed to obtain mixed material. The stabilizer solution is pre-dissolved with a small amount of deionized water, added and mixed in tank. The remaining amount of water is added to tank, stirred and mixed uniformly to obtain final agent.