Single-component middle coating can be used for wet-on-wet and dry jet wet, and preparation method thereof

Abstract

The invention belongs to the technical field of paint, and more specifically relates to a single-component middle coating can be used for wet-on-wet and dry jet wet. The single-component middle coating can be used for wet-on-wet and dry jet wet comprises, by mass, 35 to 45% of a grinding component slurry, 15 to 25% of a water-based acrylic polyol dispersion, 5 to 15% of a water-based polyurethanedispersion, 3 to 7% of an aqueous auxiliary agent, 0.5 to 1.5% of an amine neutralizer, 0.5 to 2% of ethylene glycol monobutyl ether, 0.3 to 0.7% of a wetting leveling agent, 2 to 8% of a methylated amino resin, 0.3 to 0.7% of a thickening agent, and 8 to 14% of water. The single-component middle coating can be used for wet-on-wet and dry jet wet is capable of increasing production efficiency greatly, is universal in et-on-wet and dry jet wet, is capable of saving production time and baking energy consumption greatly, and reducing research and development cost.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a wet-on-wet and dry-spray-wet one-component primer primer and a preparation method thereof. Background technique [0002] Spraying robot, also known as painting robot, is an industrial robot that can automatically spray paint or spray other coatings. It is mainly composed of a robot body, a computer and a corresponding control system. Painting robots are generally driven by hydraulic pressure and have the characteristics of fast movement speed and good explosion-proof performance. They can be taught through hand-to-hand teaching or point display. They are widely used in automobiles, instruments, electrical appliances, enamel and other craft production departments. The spraying robot can improve the quality of spraying and the utilization rate of materials by setting spraying parameters, and has the advantages of easy operation and maintenance. In the process of aut...

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Problems solved by technology

[0004] Chinese patent application CN 104109428 A discloses a 3C1B wet-on-wet white primer and its preparation method. The white primer includes the following components: polyester resin, titanium dioxide, bentonite slurry, dispersant, and thermosetting acrylic resin , amino resin, blocked polyurethane, acrylate leveling agent A, acrylate leveling agent B, CAB solution, epoxy resin solution, PMA, xylene, n-butanol and butyl acetate, which are in oily systems, in normal On the advanced production line, it can reach surface dryness in 5 minutes, thus realizing the possibility of 3C1B, without adding intermediate coating coating line, without separate baking, which can improve production efficiency and reduce coating cost, but the white intermediate coating cannot Spraying under the condition of dry spraying wet process will cause the limitation of the product to a certain extent and affect the production effect

At present, since the volatilization rate of water in the water-based system is much slower than that of the solvent, it is difficult for the intermediate paint to be dry within 5 minutes on the normal production line, which increases the difficulty of the possibility of wet-on-wet water-based paint. Therefore, it is necessary to provide a It can be used for wet-on-wet spraying within 5 minutes of the normal production line, and can still be used for dry spraying and wet spraying after the base coat of the intermediate coating reaches surface dryness when the line is stopped, and the final effect can basically achieve the same wet-on-wet coating. , dry spray wet one-component primer primer

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