Water-based automotive paint, and preparation method and application method thereof

Abstract

The invention discloses a water-based automotive paint, and a preparation method and an application method thereof. The water-based automotive paint is prepared from water-based castor oil-modified alkyd resin, water-based acrylic resin, water-based color paste, amino resin A, amino resin B, a coalescing agent, deionized water, a dispersing agent, a wetting agent, a pH regulator, a defoamer, anti-settling pulp, a corrosion remover, a thickener, an adhesion promoter and a flatting agent. The preparation method refers to orderly adding the raw materials to evenly agitate. The application method comprises the following steps: evenly mixing and stirring the water-based automotive paint and water according to the ratio of 1:(0.1-0.3), and then spraying, placing, baking and solidifying, so as to obtain a stoving varnish coating. A solvent stoving varnish is replaced by using the water-based automotive paint disclosed by the invention; a complete coating, of which the adhesive force is 0 level, and the flexibility is 1mm, which is excellent in weather fastness, high in fullness, and vivid in color and luster, and has excellent protectiveness and decorative property can be formed on the metal surface; the water-based automotive paint is safe in production procedure, environment-friendly, simple, and environment-friendly and convenient in construction.

Description

technical field [0001] The invention relates to a water-based automobile baking varnish and its preparation method and use method, especially the preparation method and use method of the water-based baking varnish on various metal surfaces such as trucks, transport vehicles, agricultural vehicles, truck boxes, mechanical equipment, hardware components and the like. Background technique [0002] At present, the coatings used for coating metal surfaces such as trucks, transport vehicles, agricultural vehicles, truck boxes, mechanical equipment, and hardware components are mainly solvent-based coatings. Solvent-based coatings not only cause serious pollution to the environment, but also are unsafe to produce and do some harm to the health of employees. Therefore, the coating of the above workpieces must be water-based. [0003] At present, water-based baking varnishes with comparable performance to solvent-based baking varnishes have the following problems: 1. The baking tempe...

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Problems solved by technology

[0003] At present, water-based baking varnishes with comparable performance to solvent-based baking varnishes have the following problems: 1. The baking temperature is too high, at least above 160°C, which wastes energy; 2. Due to the relatively late development of domestic water-based resins, they mainly rely on imports. The cost is relatively high; 3. The luster of the bright solid color paint is not high enough, and it needs to be covered to meet the requirements; 4. When the general water-based baking paint is diluted with water, the gloss is unstable and the gloss will often decrease a lot

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