Double-component PU (polyurethane) and UV (ultraviolet) dual-curing bright top-coat

Abstract

The invention belongs to the field of coatings, and particularly relates to a two-component PU (polyurethane) and UV (ultraviolet) dual-curing bright top-coat which comprises a component A and a component B. The component A comprises the following components in percentage by weight: 33-38% of polyurethane acrylate, 15-21% of epoxy acrylate, 10-25% of synthetic fatty acid resin, 2-5% of a photoinitiator, 5-9% of a multifunctional reactive monomer, 0.2-0.5% of a flatting agent, 0.2-0.5% of a defoaming agent and 15-25% of n-butyl acetate; the component B is prepared from the following components in percentage by weight: 40 to 60 percent of polyisocyanate adduct, 40 to 60 percent of propylene glycol methyl ether acetate and 0.2 to 0.5 percent of dehydrating agent; the mass ratio of the component A to the component B is 1: (0.1-0.2). The dual-curing bright top-coat has the characteristics of high gloss, high hardness, wear resistance, scratch resistance, good fullness and the like, meanwhile, the relatively high hardness is more beneficial to rapid packaging in furniture factory production, and the working efficiency is improved.

Description

technical field [0001] The invention belongs to the field of coatings, relates to the field of preparation of UV and PU coatings, and in particular relates to a two-component PU and UV dual-curing bright clear topcoat. Background technique [0002] Traditional PU bright varnish has the characteristics of high fullness, high gloss, good leveling, and good vividness, and is widely used, but at the same time, PU bright lacquer also has some inherent defects, such as slow increase in hardness, low final hardness, etc. problems, resulting in the limitations of its application. UV paint is a light-curing paint, which has the characteristics of high hardness and high solid content in construction. However, when it is used as a bright paint, it has shortcomings such as insufficient brightness and poor leveling. Based on this, the present invention combines PU and UV to solve the shortcomings of low gloss and poor leveling of UV varnish, and at the same time make up for the deficien...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art, and propose a two-component PU, UV dual-curing clear finish paint, through the adjustment and combination of components, the dual-cure clear finish paint has high gloss , high hardness, wear resistance, scratch resistance, good fullness and other characteristics, it solves the shortcomings of low gloss and poor leveling of UV varnishes, and at the same time makes up for the shortcomings of PU varnishes such as low hardness and long packaging time

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