Aqueous finishing-free high-gloss solid color paint for vehicles

Abstract

The invention discloses an aqueous finishing-free high-gloss solid color paint for vehicles. The paint comprises a main film-forming substance, an assistant, deionized water and color paste, and the main film-forming substance comprises an aqueous acrylic acid dispersion, an aqueous polyester resin, a fully methylated amino resin and an aqueous blocked isocyanate; wherein the assistant comprises graphene dispersion liquid, an acid catalyst, a defoaming agent, an aqueous base material wetting agent, a first thickening agent, a second thickening agent, a third thickening agent, a neutralizing agent, an aqueous wetting dispersing agent and a coalescing agent; and the color paste comprises aqueous polyester resin, an aqueous wetting dispersant, a defoaming agent, a neutralizer and a pigment. Graphene is added into a coating; a resin system capable of generating a synergistic effect with graphene is screened out; on the premise of satisfying various physicochemical properties of the traditional aqueous solid color paint for vehicles matched with an oil-based finishing varnish film, the production process of coating the oil varnish on the traditional solid color paint is reduced, the VOCs emission is reduced by more than 95%, the energy consumption is reduced by more than 30%, the working hours are reduced by more than 20%, and the national requirements on energy conservation, emission reduction and consumption reduction are met.

Description

technical field [0001] The invention relates to the key technical field of clean production of coatings and coatings, in particular to a water-based gloss-free high-gloss solid-color coating for vehicles. Background technique [0002] At present, the surface coating of automobiles and motorcycles is gradually changing from traditional oil-based paints to environmentally friendly water-based paints. At present, the painting of automobiles and motorcycles generally adopts the water + oil process, that is, water-based primer + water-based top (color) paint + oily finish varnish. Since the application of water-based varnishes in the coating of automobiles and motorcycles is not mature at present, oil-based varnishes are generally used for varnishes, so a large amount of VOCs exhaust gas will be emitted, causing serious air pollution. The invention is a water-based gloss-free high-gloss solid color paint for vehicles, which combines the surface (color) paint and the finish paint...

AI Technical Summary

Problems solved by technology

Moreover, due to the existence of the flake graphene layer, it can also effectively prevent the erosion of harmful substances such as water on the substrate, effectively improve the chemical resistance of the paint film, and make the paint film have excellent fullness and weather resistance, which is different from traditional oil-based varnishes. The appearance and various physical and chemical properties of the finish layer are equivalent, which solves the problem of excessive VOCs exhaust gas and polluting the environment when the traditional water-based solid color paint is sprayed with oil-based finish varnish, and reduces the spraying and baking process of the finish varnish after the paint. Achieve the results of energy saving, consumption reduction, emission reduction and high efficiency

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