Polyester type glazing-free yellow primer powder and preparation method thereof

Abstract

The invention provides polyester type glazing-free yellow primer powder, which is prepared from the following raw materials in parts by weight: 20 to 30 parts of modified acrylic acid, 1 to 3 parts ofcharge increasing agent, 2 to 5 parts of mixed pigment, 0.5 to 2 parts of degasifying agent, 0.2 to 0.5 part of dispersant, 0.5 to 1 part of toughening agent, 0.2 to 0.5 part of brightener, 0.1 to 0.3 part of wetting agent, 0.1 to 0.3 part of preservative, 0.1 to 0.3 part of antioxidant and 0.1 to 0.3 part of light stabilizer. The charge increasing agent is beta-hydroxyalkylamide; the degasifyingagent is stearic acid; the dispersant is sulfur zinc; the toughening agent is a pvc (polyvinyl chloride) toughening agent; the wetting agent is heptadecyl imidazoline; the preservative is 5-chloro-2-methyl-4-isothiazolin-3-one. The glazing-free yellow primer powder is obtained through crushing, subsequent extrusion and subsequent flaking, shearing, pulverization and sieving. Through adding the modified acrylic acid and introducing a phosphite antioxidant and a hindered amine light stabilizer, the polyester type glazing-free yellow primer powder provided by the invention is used for obviouslysolving the problems that a glazing powder coating is poor in impact resistance in practical application, and is easy to discolor and poor in weather resistance.

Description

technical field [0001] The invention belongs to the field of paint preparation, and in particular relates to a polyester-type varnish-free yellow primer and a preparation method thereof. Background technique [0002] With the continuous advancement of technology, powder coatings are gradually applied to the automotive industry, which puts forward higher requirements for powder coatings. At present, the use of powder coatings in the automobile market is mainly concentrated in the finish coating of automobile wheels and car bodies. This requires powder coatings to have excellent impact resistance, scratch resistance, and maintain the aesthetics of the car. The automotive finish powder coatings currently on the market cannot meet the above requirements. Therefore, it has become an urgent problem to be solved to develop a varnish-free yellow base powder to keep the color of the coating without yellowing, gloss, and coating performance under continuous operation. Contents of ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a polyester-type varnish-free yellow base powder. By adding modified acrylic acid, introducing a phosphite antioxidant and a hindered amine light stabilizer, the poor impact resistance of the varnish powder coating in practical applications is obviously solved. , easy to change color, poor weather resistance

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