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High-hardness and erasing-resistant hardening coating liquid and hardened film

A technology of coating liquid and hardened film, applied in the field of hardened layer coating liquid that is resistant to erasing and writing, and high hardness, it can solve the problem that the protective film cannot have both high hardness and resistance to erasing and writing, and achieve high wear resistance and high hardness. The effect of transmittance

Inactive Publication Date: 2019-05-21
NINGBO EXCITON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the protective film used for the outer screen of the existing educational machine cannot have both high hardness and erasure resistance, the present invention provides a high hardness, erasure resistance hardened layer coating liquid and a hardened film

Method used

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  • High-hardness and erasing-resistant hardening coating liquid and hardened film
  • High-hardness and erasing-resistant hardening coating liquid and hardened film

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Effect test

Embodiment 1

[0077] The invention provides a coating solution for a hardened layer, which comprises 30% acrylate prepolymer, 40% acrylate monomer, 25.6% organic particles (PMMA), 4% photoinitiator, 0.4% auxiliary agent, said percentage content is weight percentage content.

[0078] The preparation method of the hardening solution provided in this embodiment includes:

[0079] 25% nine-official urethane acrylic resin oligomer, 5% six-official urethane acrylic resin oligomer, 40% difunctional acrylate monomer, 25.6% polymethyl methacrylate particles, 4% photoinitiator , 0.4% leveling agent. Disperse the main resin in an organic solvent to form a hardening solution with a solid content of 50%. Among them, the nine-functional polyurethane acrylic resin oligomer, the six-functional polyurethane acrylic resin oligomer, and the difunctional acrylate monomer are all provided by Meiyuan Special Chemical Co., Ltd., and the photoinitiator is 184 provided by BASF Co., Ltd. The base methyl acrylate ...

Embodiment 2

[0084] The preparation method of the hardening solution provided in this embodiment includes:

[0085] 20% nine-official urethane acrylic resin oligomer, 26% six-official urethane acrylic resin oligomer, 24.2% difunctional acrylate monomer, 24.3% polymethyl methacrylate particles, 5% photoinitiator , 0.5% leveling agent. Disperse the main resin in an organic solvent to form a hardening solution with a solid content of 45%. Among them, the nine-functional urethane acrylic resin oligomer, the six-functional urethane acrylic resin oligomer, and the difunctional acrylate monomer are all provided by Meiyuan, the photoinitiator is 184 provided by BASF, and the polymethyl methacrylate particles are from the comprehensive research institute. The leveling agent is provided by BYK, and the organic solvent is ethyl acetate.

[0086] Coatings were applied on 125 μm PET substrates.

[0087] The thickness of the formed hardened layer was 24 μm.

[0088] The performance test results of t...

Embodiment 3

[0090] 35% nine-official urethane acrylic resin oligomer, 10% six-official urethane acrylic resin oligomer, 38.3% difunctional acrylate monomer, 13% polymethyl methacrylate particles, 3.5% photoinitiator , 0.2% leveling agent. Disperse the main resin in an organic solvent to form a hardening solution with a solid content of 37%. Among them, the nine-functional urethane acrylic resin oligomer, the six-functional urethane acrylic resin oligomer, and the difunctional acrylate monomer are all provided by Meiyuan, the photoinitiator is 184 provided by BASF, and the polymethyl methacrylate particles are from the comprehensive research institute. The leveling agent is provided by BYK, and the organic solvent is ethyl acetate.

[0091] Coatings were applied on 188 μm PET substrates.

[0092] The thickness of the formed hardened layer was 15 μm.

[0093] 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-hardness and erasing-resistant hardening coating liquid and a hardened film. In order to solve the problem thatthe protective film for a screen of an educational machine cannot have both high hardness and erasing resistance, the invention provides the high-hardness and erasing-resistant hardening coating liquid and the hardened film. The hardening coating liquid comprises the following components by weight percentage: 30-70% of acrylate prepolymer, 10-40% of acrylate monomer, 10-30% of polymethyl methacrylate particles, 1-5% of a light initiator and 0.1-1% of an aid. The hardening coating liquid forms a hardened layer after curing, which has both high hardness and erasing resistance. The hardened filmhas the characteristics of high hardness, high wear resistance and erasability, and is suitable for external protection of display screens.

Description

technical field [0001] The invention relates to the technical field of hardened film, in particular to a high-hardness, erasable hardened layer coating solution and a hardened film. Background technique [0002] With the continuous development of electronic display technology, liquid crystal displays have been used in many fields. In addition to common TVs, computers, mobile phones, etc., they have also played an important role in the education industry. As an auxiliary display tool for the education industry, it is called an education machine. During the use of this device, it is necessary to pay attention to the impact of the external force on the display screen. Therefore, many screens are covered with a layer of high-hardness, erasable tempered glass. to the protective effect. However, the production cost of tempered glass is high, and the surface needs to be specially treated. The protection of education machines in the market is gradually developing towards film mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D175/14C09D7/63C09D7/65C08L67/02
Inventor 唐海江简伟任汪诚杨科彦夏寅薛永富张彦李刚
Owner NINGBO EXCITON TECH
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