High-wear-resistant and high-gloss UV coating for PC base material of automobile interior trim optical components and preparation method thereof

Abstract

The invention discloses a high-wear-resistant and high-gloss UV coating for a PC base material of automobile interior trim optical components. The coating comprises the following raw materials in parts by weight: 35-55 parts of polyurethane acrylic resin A, 10-20 parts of polyurethane acrylic resin B, 5-15 parts of 1,6-hexanediol diacrylate, 5-10 parts of a wear-resistant auxiliary agent, 1-3 parts of a leveling agent, 1-2 parts of an ultraviolet absorbent, 2-5 parts of a photoinitiator, 10-20 parts of a solvent and 40-60 parts of a diluent. The functional degrees of polyurethane acrylic resinA and polyurethane acrylic resin B are 6-8 and 3.5-4 respectively. The coating can directly coat a PC surface, not only meets the requirements of chemical resistance, weatherability and other conventional paint properties for automobile interior trims, but also meets light transmission required by optical components, and has the greatest advantage meeting the requirements of high wear resistance.The wear resistance passes through GMW 1444-2014 (ASTM D-1044) tests.

Description

technical field [0001] The invention belongs to the technical field of automotive interior coatings, and relates to a high-wear-resistant high-gloss UV coating for automotive interior optical parts PC substrates and a preparation method thereof, in particular to a coating that can be directly coated on PC (polycarbonate) On the surface, it is a solvent-based UV coating that achieves high abrasion resistance on the surface. Background technique [0002] With the development trend of automobile intelligence and Internetization, more and more multi-functional multimedia touch screen terminals such as integrated navigation are installed inside the car, and the outer screen of the multimedia touch screen terminal is mostly made of PC material because of its high transparency. and impact resistance, etc., but at the same time, PC materials have poor scratch resistance and abrasion resistance. Therefore, it is necessary to develop a coating with high light transmission and high scr...

AI Technical Summary

Problems solved by technology

[0002] With the development trend of automobile intelligence and Internetization, more and more multi-functional multimedia touch screen terminals such as integrated navigation are installed inside the car, and the outer screen of the multimedia touch screen terminal is mostly made of PC material because of its high transparency. and impact resistance, etc., but at the same time, PC materials have poor scratch resistance and abrasion resistance. Therefore, it is necessary to develop a coating with high light transmission and high scratch and abrasion resistance as the outer screen protective coating

[0003] However, the wear resistance and light transmittance of the existing coatings are often not compatible, that is, the existing coatings meet the requirements of wear resistance, but cannot meet the better light transmittance; Luminosity, but can not meet the requirements of wear resistance

Images