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High hardness, high wear resistance, anti-fingerprint UV curing coating

A light-curing coating, high wear-resistant technology, applied in the field of coatings, can solve the problems of reduced anti-fouling effect of the coating, decreased light transmittance of the coating, loss of light of the coating, etc., to improve the anti-fingerprint contamination characteristics, reduce Internal stress concentration, the effect of ensuring transparency

Active Publication Date: 2021-05-04
YIXING HONGTAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such small molecular additives are easy to migrate and are not wear-resistant. After a period of use, the anti-staining effect of the coating will be significantly reduced, and the entire coating will also lose gloss and wear.
At the same time, in order to increase the hardness of the coating and improve the wear resistance of the coating, the existing technology is to add inorganic filler particles to the formula, but this method is due to the compatibility of inorganic particles and UV light curing resins, monomers and solvents. , leading to a decrease in the transmittance of the coating

Method used

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  • High hardness, high wear resistance, anti-fingerprint UV curing coating
  • High hardness, high wear resistance, anti-fingerprint UV curing coating
  • High hardness, high wear resistance, anti-fingerprint UV curing coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment relates to a high-hardness, high-abrasion and anti-fingerprint UV-curable coating. Concretely comprise each component of mass parts as shown below:

[0024]

[0025] Thoroughly stir the above-mentioned components, after mixing evenly, spray on the PMMA surface of the PC / PMMA composite board, control the wet film thickness to about 20-30μm, level it in an oven at 50°C for 5min, and then spray it on the PMMA surface of the PC / PMMA composite plate with a radiation energy of 500mJ / cm 2 Cured under UV light. The implementation effect and performance test are shown in Table 2.

Embodiment 2

[0027] This embodiment relates to a high-hardness, high-abrasion and anti-fingerprint UV-curable coating. Concretely comprise each component of mass parts as shown below:

[0028]

[0029] Thoroughly stir the above-mentioned components, after mixing evenly, spray on the PC board, control the wet film thickness to about 20-30μm, level it in an oven at 50°C for 5min, and then spray it on the PC board with an irradiation energy of 500mJ / cm 2 Cured under UV light. The implementation effect and performance test are shown in Table 2.

Embodiment 3

[0031] This embodiment relates to a high-hardness, high-abrasion and anti-fingerprint UV-curable coating. Concretely comprise each component of mass parts as shown below:

[0032]

[0033] Thoroughly stir the above-mentioned components, after mixing evenly, perform flow coating on the PMMA plate, control the wet film thickness to about 15-25 μm, level it in an oven at 50°C for 5 minutes, and then irradiate it with a radiation energy of 500mJ / cm 2 Cured under UV light. The implementation effect and performance test are shown in Table 2.

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Abstract

The invention discloses a photocurable coating with high hardness, high abrasion resistance and anti-fingerprint. Silicone-modified urethane acrylate, 25-35 parts of high-functionality acrylate oligomer, 2-4 parts of photoinitiator, 1-2 parts of macromolecular photocuring assistant, 100-120 parts of diluent And 0.3 to 0.5 parts of additives. The present invention uses nanoparticle hybrid silicone modified polyurethane acrylate with high hardness and high wear resistance as the main resin, and is matched with organic fluorine modified polyurethane High-functionality acrylate oligomers, by adjusting the combination of photoinitiators and adding macromolecular photocuring aids in the formula, a kind of high hardness, high wear resistance and excellent anti-fingerprint effect has been developed, which can be used in The UV-curable coating on the transparent plastic sheet solves the problems of low hardness, poor wear resistance and poor anti-fingerprint effect of general coatings.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to ultraviolet curing coatings with high hardness, high wear resistance and anti-fingerprint effects. Background technique [0002] With the popularization of 4G communication technology and the advent of the 5G information age, tablet computers and large-screen smartphones have been widely used. Based on aesthetic and performance considerations, the back cover (battery cover) of these electronic devices will start to use a large number of transparent plastic sheets with anti-glass effect. In order to achieve the anti-glass effect, it is usually necessary to harden the plate to make the surface hardness of the plastic plate reach more than 3H, while maintaining high gloss and high brightness. But because they are often touched, these high-gloss and high-gloss sheet backs are extremely susceptible to fingerprints, skin oils, sweat, and makeup. These dirt are not easy to be removed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D163/10C09D5/16C09D7/63C08J7/04C08J7/046
CPCC08J2333/12C08J2369/00C08J2463/10C08J2475/14C08L2201/08C08L2201/10C08L2205/025C08L2205/03C09D5/1662C09D5/1687C09D5/18C09D175/14C08J7/0427C08L75/14C08L63/10
Inventor 杨科陈朝岚吴玉明吴刚强许斌周瑜朱争光
Owner YIXING HONGTAI CHEM
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