▎ 摘　　要

NOVELTY - Chromium-free passivation solution comprises 40-50 pts. wt. styrene-acrylic emulsion, 20-40 pts. wt. epoxy resin, 5-25 pts. wt. highly dispersed graphene, 1-5 pts. wt. wetting and dispersing agent, 1-3 pts. wt. defoaming agent and 20-50 pts. wt. propylene glycol methyl ether acetate. USE - The chrome-free passivation solution is useful for coating aluminum plate and improving paint bonding force. ADVANTAGE - The aluminum plate has improved paint bonding force without chromium passivation solution. The corrosion resistance of aluminum plate is improved by adding high dispersing graphene to aluminum plate before coating before coating, so that it can be attached to the aluminum plate for a long time, so as to avoid the falling, to be easy to spray paint on it, and to protect the aluminum plate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the coating process of chrome-free passivation solution before aluminum plate with improved paint bonding force.