Waterborne polyester amino stoving varnish coating and preparation method and application thereof

Abstract

The invention relates to a waterborne polyester amino stoving varnish coating and a preparation method and application thereof. The waterborne polyester amino stoving varnish coating comprises the following components in parts by weight: 30 to 50 parts of waterborne saturated polyester resin, 6 to 15 parts of amino resin, 5 to 15 parts of titanium dioxide, 5 to 10 parts of precipitated barium sulfate, 5 to 7 parts of a film-forming agent, 0.2 to 0.5 part of a wetting dispersant, 0.2 to 0.5 part of a leveling agent, 0.2 to 0.5 part of a thickening agent, 2 to 3 parts of a neutralizer, 5 to 10 parts of deionized water, and 0.3 to 0.67 part of an antifoaming agent. According to the invention, an amino stoving varnish film prepared from the waterborne polyester resin has excellent adhesive force, water resistance and chemical resistance. The waterborne polyester amino stoving varnish coating can be widely applied to industries such as agricultural vehicles, household appliances and hardware fittings, meets environment-friendly requirements, does not contain flammable, explosive, toxic and harmful solvents, is simple in construction and high in efficiency, can replace solvent type aminostoving varnish coatings, and has good application prospects.

Description

technical field [0001] The invention relates to a water-based polyester amino baking varnish coating, a preparation method and application thereof. Background technique [0002] With the development of industry, the industrial paint market for metal protection and decoration also develops and grows accordingly. As a common industrial paint, baking varnish is widely used in agricultural vehicles, home appliances, hardware accessories and other industries. It is also a major category of coating products and occupies an important position in coatings. The coating film has good fullness, high hardness and strong adhesion, and has good protection and decoration for metals. [0003] At present, the domestic market is still dominated by oil-based baking varnishes. Amino paints were produced in batches in the early 1960s. At that time, soybean oil-modified alkyd resins and butanol etherified melamine resins were mainly used as baking varnishes as the main film-forming substances, a...

AI Technical Summary

Problems solved by technology

Although water-based baking varnish products have occupied a small part of the market this year, some properties of water-based products still cannot meet the requirements, especially high temperature resistance. Therefore, water-based baking varnishes need further efforts to replace solvent-based baking varnishes.

Images