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High-hardness, high-wear-resistant and anti-fingerprint ultraviolet-curable 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: 2019-03-29
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-resistant and anti-fingerprint ultraviolet-curable coating
  • High-hardness, high-wear-resistant and anti-fingerprint ultraviolet-curable coating
  • High-hardness, high-wear-resistant and anti-fingerprint ultraviolet-curable coating

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Experimental program
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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 fraction 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 fraction 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 fraction 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 high-hardness, high-wear-resistant and anti-fingerprint ultraviolet-curable coating. The coating comprises the following ingredients (by weight): organic fluorine modified urethane acrylate, nano-particle hybrid silicone modified urethane acrylate, high-functionality acrylate oligomer, a photoinitiator, a macromolecular photocuring aid, a diluent and an auxiliary agent. By using the nano-particle hybrid silicone modified urethane acrylate having high hardness and high wear resistance as the matrix resin in cooperation with the organic fluorine modified urethane acrylate having fingerprint fouling resistance and the high-functionality acrylate oligomer capable of increasing crosslinking density, and by adjusting the combination of the photoinitiator while adding the macromolecular photocuring aid in the formula, the ultraviolet-curable coating which has high hardness, high wear resistance and excellent anti-fingerprint effect and can be used for transparent plastic boards is developed. Thereby, the problem that a common coating has low hardness, poor wear resistance and poor anti-fingerprint effect is solved.

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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IPC IPC(8): C09D175/14C09D163/10C09D5/16C09D7/63C08J7/04
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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