Highly wearable vacuum coating ultraviolet curing coatings

Abstract

The invention relates to the field of electronic application coatings, in particular to high wear-resistant vacuum coating ultraviolet light curing coatings. The composition and content of the high wear-resistant vacuum coating UV-curable coating are: 10-30wt% of difunctional urethane acrylate, 10-40wt% of high-functional urethane acrylate, 5-20wt% of high-functional acrylate monomer, single Functional acrylate monomer 0-15wt%, acid adhesion promotion 1-10wt%, photoinitiator 1-6wt%, nano wear-resistant material 0-5wt%, additive 0.1-2wt%, solvent 10-50wt%. The invention is aimed at protecting the surface of vacuum coating workpieces of electronic products such as mobile phones, MP3s, and digital cameras, and has the characteristics of good surface effect, super wear resistance, high temperature and high humidity resistance, cold and heat cycle resistance, and excellent yellowing resistance, among which RCA has the highest wear resistance It can reach more than 1500 times, effectively improving the service life of electronic products. The invention effectively solves the adhesive force and wear resistance of the UV-cured vacuum coating paint, solves the matching problem of the primer and top paint of the UV-cured vacuum coating paint, and has wide versatility.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to an ultraviolet curing coating used after the surface of a workpiece is metallized by vacuum coating. Background technique [0002] After more than 40 years of development, radiation curing technology has been widely used in various fields and industries all over the world. Ultraviolet curable coatings (UV coatings for short) have the advantages of low VOC content, fast curing speed, and good comprehensive properties of the coating film, and have developed rapidly in China. The plastic substrate is treated by vacuum coating, which can make the workpiece get a high degree of metallic luster and mirror effect. UV-curable vacuum coating coatings are generally applied by spraying, with fast curing speed, simple operation and convenient construction, and have been widely used. Generally used in computer peripheral equipment, communication equipment, audio-visual equipment, consumer electronic...

AI Technical Summary

Problems solved by technology

Wherein the Chinese patent CN1281011A applies for "ultraviolet light curing vacuum coating bottom and topcoat", the topcoat adopts polyester acrylate and phenolic epoxy acrylate as the main resin, which solves the adhesion problem of the ultraviolet light curing vacuum coating topcoat, but due to Low hardness, poor wear resistance and stain resistance, Chinese patent CN1803942A application "UV curable coating for metal coating surface protection" uses epoxy acrylic resin and polyurethane resin with 2 functional groups as the main resin, with thermoplastic acrylic resin and fiber The composite resin composed of plain resin improves the hardness of the coating by increasing the rigid structure in the coating system. However, due to the poor wear resistance of epoxy acrylic resin and the poor anti-yellowing performance of the coating film, it is far from meeting the requirements of today's electronic products for coatings. Higher requirements, especially the need for high wear resistance

Thus limiting the application of UV-curable vacuum coating coatings