▎ 摘　　要

NOVELTY - Processing high corrosion-resistant aluminum profile comprises (i) removing oil and fat for the aluminum profile, (ii) spraying micro-etching liquid on the surface of the aluminum profile, where etching liquid is composed of hydrochloric acid, phosphoric acid, triethanolamine, diammonium hydrogen phosphate, dimethicone, 3-thiazole-2-formyl chloride, and water (remaining amount), (iii) cleaning and drying the micro-etched aluminum profile, placing in an oxidation tank of sulfuric acid, oxalic acid and deionized water, and carrying out anodic oxidation, (vi) spraying corrosion-resistant layer on the surface of the aluminum profile after cleaning and drying, where the corrosion-resistant layer is composed of modified graphene, silicon carbide, and nano-zirconia, uniformly dispersing in deionized water, adding into epoxy resin and uniformly dispersing, adding curing agent, uniformly stirring, and placing the sprayed aluminum profile into the curing box to cure, and cooling. USE - The method is useful for processing high corrosion-resistant aluminum profile. ADVANTAGE - The method removes the naturally generated oxide film by micro-etching, and generates an oxide film with a more uniform texture by anodizing, which improves the corrosion resistance of the aluminum profile substrate, the sprayed corrosion-resistant layer is conducive to the formation of a dense physical isolation layer on the surface of the aluminum profile, which delays the diffusion of the corrosive medium in the epoxy coating and improves its protective performance to the substrate. DETAILED DESCRIPTION - Processing high corrosion-resistant aluminum profile comprises (i) removing oil and fat for the aluminum profile, (ii) spraying micro-etching liquid on the surface of the aluminum profile, where etching liquid is composed of 1-5% hydrochloric acid, 1-5% phosphoric acid, 0.1-1% triethanolamine, 1-2% diammonium hydrogen phosphate, 0.01-0.03% dimethicone, 0.5-1% 3-thiazole-2-formyl chloride, and water (remaining amount), (iii) cleaning and drying the micro-etched aluminum profile, placing in an oxidation tank of sulfuric acid, oxalic acid and deionized water with a volume ratio of 15:0.1-0.5: 4, carrying out anodic oxidation, taking out and placing in boiling water for 40-60 minutes, taking out and drying, (vi) spraying corrosion-resistant layer on the surface of the aluminum profile after cleaning and drying, where the corrosion-resistant layer is composed of 3-5 pts. wt. modified graphene, 1-3 pts. wt. silicon carbide, and 1-3 pts. wt. nano-zirconia, uniformly dispersing in 10-20 pts. wt. deionized water, adding into 90-100 pts. wt. epoxy resin and uniformly dispersing, adding 45-50 pts. wt. curing agent, uniformly stirring, and placing the sprayed aluminum profile into the curing box to cure, and cooling naturally.