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High-wear-resistance high-toughness hardened layer coating liquid and hardened film

A technology of hardening layer and coating liquid, which is applied in the direction of coating, polyurea/polyurethane coating, etc., can solve the problems of poor wear resistance on the surface of transparent films, and achieve the effects of good flexibility, high transmittance, and high light transmittance

Inactive Publication Date: 2019-06-14
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of poor wear resistance on the surface of the existing transparent film, the present invention provides a hardened layer coating solution with high wear resistance and high toughness and a hardened film

Method used

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  • High-wear-resistance high-toughness hardened layer coating liquid and hardened film
  • High-wear-resistance high-toughness hardened layer coating liquid and hardened film
  • High-wear-resistance high-toughness hardened layer coating liquid and hardened film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] The preparation method of the hardening solution provided in this embodiment includes:

[0078] 20% of pentafunctional urethane acrylic resin oligomer, 10% of nine-functional urethane acrylic resin oligomer, 30% of hexafunctional acrylate monomer, 35.5% of nano-particle silica, particle size in the range of 70-100nm , 4% photoinitiator, 0.5% leveling agent. Disperse the main resin in an organic solvent to form a hardening solution with a solid content of 52%. Among them, the pentafunctional urethane acrylic resin oligomer, the nine-functional urethane acrylic resin oligomer, and the hexafunctional acrylate monomer are all provided by Meiyuan Special Chemical Co., Ltd., and the photoinitiator is 184 provided by BASF Co., Ltd. Silicon oxide nanoparticles are provided by Dexa, the leveling agent is provided by BYK Chemical Co., Ltd., and the organic solvent is ethyl acetate.

[0079] Coatings were applied on 188 μm PET substrates.

[0080] The thickness of the formed ha...

Embodiment 2

[0083] The preparation method of the hardening solution provided in this embodiment includes:

[0084] 37% of pentafunctional urethane acrylic resin oligomer, 20% of nine-functional urethane acrylic resin oligomer, 11.2% of hexafunctional acrylate monomer, 28.4% of nano-particle silica, particle size in the range of 40-70nm , 3% photoinitiator, 0.4% leveling agent. Disperse the main resin in an organic solvent to form a hardening solution with a solid content of 40%. Among them, the pentafunctional urethane acrylic resin oligomer, the nine-functional urethane acrylic resin oligomer, and the hexafunctional acrylate monomer are all provided by Meiyuan, the photoinitiator is 184 provided by BASF, and the silica nanoparticles are provided by Nissan Chemical , The leveling agent is provided by BYK, and the organic solvent is ethyl acetate.

[0085] Coatings were applied on 100 μm PET substrates.

[0086] The thickness of the formed hardened layer was 5 μm.

[0087] The performa...

Embodiment 3

[0089] 40% pentafunctional urethane acrylic resin oligomer, 40% nine-functional urethane acrylic resin oligomer, 5% hexafunctional acrylate monomer, 12.8% nano-particle silica, particle size in the range of 10-40nm , 2% photoinitiator, 0.2% leveling agent. Disperse the main resin in an organic solvent to form a hardening solution with a solid content of 55%. Among them, the pentafunctional urethane acrylic resin oligomer, the nine-functional urethane acrylic resin oligomer, and the hexafunctional acrylate monomer are all provided by Meiyuan, the photoinitiator is 184 provided by BASF, and the silica nanoparticles are provided by Evonik , The leveling agent is provided by BYK, and the organic solvent is ethyl acetate.

[0090] Coatings were applied on 75 μm PET substrates.

[0091] The thickness of the formed hardened layer was 4 μm.

[0092] The performance test results of the prepared cured film are shown in Table 1.

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Abstract

The invention relates to the technical field of hardened films, in particular to a high-wear-resistance high-toughness hardened layer coating liquid and a hardened film. In order to solve the problemof poor wear resistance of the surface of an existing transparent film, the invention provides the high-wear-resistance high-toughness hardened layer coating liquid and the hardened film. The hardenedlayer coating liquid comprises the following components in percentage by weight: 30%-80% of an acrylate prepolymer, 5%-30% of an acrylate monomer, 10%-40% of silicon dioxide nanoparticles, 1%-6% of aphotoinitiator and 0.1%-0.5% of an auxiliary agent, wherein the particle size of the silicon dioxide nanoparticles is 10-100 nm. The hardened layer coating liquid provided by the invention has high wear resistance and good flexibility after being cured to form a hardened layer. The hardened film provided by the invention has the characteristics of high hardness, high wear resistance, high light transmittance and low haze, meets the proper toughness requirement, and is suitable for the external protection function of a display screen.

Description

technical field [0001] The invention relates to the field of hardened film technology, in particular to a coating solution for a hardened layer with high wear resistance and high toughness and a hardened film. Background technique [0002] On the outer layer of many precision electronic equipment such as liquid crystal displays and touch screens, a high-hardness scratch-resistant protective layer is required to ensure that the liquid crystal screen is not damaged. On this basis, various hardening coating processes are derived, including tempering the glass, and pasting a transparent protective film on the LCD screen. Compared with the surface treatment of tempered glass, the transparent protective film has the advantages of low cost and reworkability, so it has more future application value and space. [0003] However, the traditional view is that it is difficult to achieve the hardness and wear resistance requirements of tempered glass by film surface treatment. In the pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/61C08J7/04C08L67/02
Inventor 唐海江汪诚简伟任冯金刚夏寅薛永富张彦李刚
Owner NINGBO EXCITON TECH
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