High-stability waterborne epoxy resin coating for woodware

Abstract

The invention discloses a high-stability waterborne epoxy resin coating for woodware. The coating comprises an A component and a B component, wherein the A component comprises the following raw materials in parts by weight: 80-120 parts of bisphenol A type epoxy resin, 10-22 parts of waterborne polyurethane emulsion, 40-50 parts of filler, 4-8 parts of composite dispersant, 2-4 parts of stearic acid, 4-7 parts of polyethylene glycol, 2-5 parts of defoamer, 3-4 parts of wetting agent, and 2-4 parts of leveling agent; the B component comprises the following raw materials in parts by weight: 10-18 parts of waterborne curing agent, 2-4 parts of ethylene glycol butyl ether acetate, 4-6 parts of 2,2,4-trimethyl-1,3-pentanediolmono(2-methylpropanoate), and 30-50 parts of deionized water; and thecomposite dispersant is prepared by the following process: mixing dichloronated polyethylene glycol, sodium hydroxide, tetrabutylammonium bromide, and p-aminophenol to obtain a mixture, performing heating and stirring on the mixture, and performing heating and stirring continuously; performing cooling, then adding gelatin, liquid paraffin and water, and performing uniform stirring; and performingcooling to room temperature, and then performing freeze drying, so as to obtain the composite dispersant.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, in particular to a high-stability water-based epoxy resin coating for woodware. Background technique [0002] Wood coating requires coatings to have good wear resistance and antibacterial effect, while polyurethane resin has excellent wear resistance and good chemical corrosion resistance, so it is widely used as a film-forming base material for wood coatings. [0003] So far, the annual sales of wood coatings in my country is about 30 billion yuan, and the main types of coatings are epoxy coatings. However, with the establishment of environmental protection regulations in various countries and the enhancement of environmental protection awareness, volatile organic The discharge of chemical compounds is increasingly limited. The development of new water-based epoxy coatings that use water as a medium instead of organic solvents has become an important development direction of coatings...

AI Technical Summary

Problems solved by technology

[0003] So far, the annual sales of wood coatings in my country is about 30 billion yuan, and the coatings are mainly epoxy coatings. However, with the establishment of environmental protection laws and regulations in various countries and the enhancement of environmental protection awareness, the volatile organic The discharge of chemical compounds is increasingly limited. The development of new water-based epoxy coatings that use water as a medium instead of organic solvents has become an important development direction for coatings in the future. However, water-based epoxy coatings have the disadvantage of poor dispersion stability, which needs to be solved urgently.

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