A kind of high wear-resisting high-gloss UV coating for PC base material of automotive interior optical parts and preparation method thereof

Abstract

The invention discloses a high wear-resistant and high-gloss UV coating for PC substrates of automotive interior optical parts, comprising the following raw materials in parts by weight: 35-55 parts of polyurethane acrylic resin A, 10-20 parts of polyurethane acrylic resin B, 1 , 5-15 parts of 6-hexanediol diacrylate, 5-10 parts of wear-resistant additive, 1-3 parts of leveling agent, 1-2 parts of ultraviolet absorber, 2-5 parts of photoinitiator, 10-part of solvent 20 parts and 40-60 parts of diluent, wherein the functionalities of polyurethane acrylic resin A and polyurethane acrylic resin B are 6-8 and 3.5-4 respectively. The coating can be directly coated on the surface of PC. In addition to meeting the conventional paint properties such as chemical resistance and weather resistance required for automotive interiors, it also meets the light transmission required for optical components. The biggest advantage is that it meets the requirements of Requirements for high wear resistance, the wear resistance has passed the test of GMW14444‑2014 (ASTM D‑1044).

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

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