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Photo-curing type hardening film with high hardness and preparation method of hardening film

A light-curing and hardening film technology, applied in optics, optical components, coatings, etc., can solve problems such as low hardness, and achieve high production efficiency, good comprehensive performance, and good comprehensive performance.

Inactive Publication Date: 2019-01-18
NINGBO HUGHSTAR ADVANCED MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problem that the hardness of the hardened film is low when the coating is thin, the invention provides a high-hardness photocurable hardened film and its preparation method

Method used

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  • Photo-curing type hardening film with high hardness and preparation method of hardening film
  • Photo-curing type hardening film with high hardness and preparation method of hardening film
  • Photo-curing type hardening film with high hardness and preparation method of hardening film

Examples

Experimental program
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Effect test

preparation example Construction

[0079] (2) Preparation of hardened coating liquid:

[0080] In the yellow light area, under the condition that the humidity is lower than 70% and the temperature is lower than 30℃, first add A, B, and C into the stirring tank, stir at 300-1000rpm for 30-60min; then at 100-500rpm While stirring, add D, E, and F in sequence. Note that the order of addition cannot be reversed. The adding speed should not be too fast, so that it does not agglomerate or splash. Finally, stir at 1000rpm for 60min. After the mixing is complete, filter it once with a filter element of 1 to 5 μm, and it can be used.

[0081] (3) Preparation of high-hardness light-curing hardened film:

[0082] Use a gravure roller to coat the above-configured hardening solution on a 188μm thick PET substrate, dry at 80°C for 1min, and irradiate UV energy at 300mj / cm 2 , The material coating is cured to obtain a hardened film with a coating thickness of less than 15μm. And test various properties after 24h as required.

[008...

Embodiment 1

[0093] The present invention provides a high-hardness photocurable hardened film, which includes a substrate layer and a photocurable coating. The raw materials of the photocurable coating are first formulated into a photocurable coating, which is also called a hardened coating solution.

[0094] The formulation of the hardened coating solution is as follows:

[0095] A: B-530UV (Guangzhou Boxing Chemical Technology Co., Ltd., functionality 4, molecular weight 2500) 6.6kg, B: perfluorinated modified oligomer DS-710ZLC (produced by Japan Harvest Company) 2.4kg, C: photoinitiated Agent 184 (produced by Nanjing Ji'an Company) 0.6 kg, D: maleic anhydride grafted polyacrylic resin 0.15 kg, E: silica particles with a particle size of 10 nm 3 kg, F: fluorine-containing additives DAC-HP (Japan University Gold Fluorochemical Company) 0.09kg, G: Methyl isobutyl ketone (MIBK) 17.25kg.

[0096] The weight percentages of the raw materials in the hardening coating liquid are as follows:

[0097] ...

Embodiment 2

[0100] The high-hardness light-curable hardened film provided in Example 1, wherein the hardened coating liquid formula is as follows:

[0101] A: B-530UV (Guangzhou Boxing Chemical Technology Co., Ltd., functionality 4, molecular weight 2500) 6kg, B: perfluorinated modified oligomer DS-710ZLC (produced by Japan Harvest Company) 3.6kg, C: photoinitiator 184 (produced by Nanjing Ji'an Company) 0.15kg, D: silane coupling agent KH570 0.3kg, E: 10nm silica particles 3kg, F: fluorine-containing auxiliary agent DAC-HP (Japan Daikin Fluorochemical) 0.09kg, G: MIBK 16.5kg.

[0102] The weight percentages of the raw materials in the hardening coating liquid are as follows:

[0103] High-functional acrylate compound (abbreviated as A): 20.24%, perfluoromodified oligomer (abbreviated as B): 12.15%, photoinitiator (abbreviated as C): 0.51%, dispersant (abbreviated as D): 1.01%, Inorganic nanoparticles (abbreviated as E): 10.12%, fluorine-containing auxiliary agent (abbreviated as F): 0.30%, so...

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Abstract

The invention belongs to the field of optical film material application and particularly relates to a photo-curing type hardening film with high hardness and a preparation method of the hardening filmand provides the photo-curing type hardening film with high hardness and the preparation method of the hardening film to solve the technical problem of low hardness of thin coatings of hardening films. The photo-curing type hardening film with high hardness comprises a substrate layer and a photo-curing coating, wherein the photo-curing coating comprises high functional group acrylate compounds,perfluoro-modified oligomer, a photoinitiator, a dispersant, inorganic nanoparticles and a fluorine-containing aid, and raw materials of the photo-curing coating are prepared into a photo-curing coating firstly. The photo-curing type hardening film with high hardness has ultrahigh hardness, has the advantages of fingerprint prevention, super wear resistance and low warping and has very good comprehensive performance. The process of the preparation method is simple, roll-to-roll coating can be realized, and the production efficiency is high.

Description

Technical field [0001] The invention belongs to the application field of optical grade film materials, and specifically relates to a high-hardness light-curing hardened film and a preparation method thereof. Background technique [0002] As we all know, transparent hardened film has been widely used in mobile phones, LCD screens, automotive touch screens, industrial touch screens, home appliances and other fields. Its core function is to provide a scratch-resistant protective layer on the surface to avoid normal use. The screen or panel is damaged and affects the user experience. As the user experience continues to improve, the requirements for the hardened film are getting higher and higher. [0003] After the introduction of ultra-thin toughened glass, the hardened film market has suffered a certain impact. However, the poor flexibility of glass, the inability to perform roll-to-roll processing, and the low efficiency after the introduction of production have been plagued by el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D167/06C09D175/14C09D7/61G02B1/14C08L67/02C08L1/12
CPCC08J7/0427C08J2301/12C08J2367/02C08J2467/06C08J2475/14C08K2003/2227C08K2003/2241C08K2003/3045C08K2201/011C08L2203/20C09D167/06C09D175/14G02B1/14C08L51/003C08K3/36C08K3/22C08K3/30
Inventor 郭琰辉董红星陈磊陈业明
Owner NINGBO HUGHSTAR ADVANCED MATERIAL TECH
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