A kind of photocurable composition and hard coating film

A hard coating, light-curing technology, used in coatings, conductive coatings, antifouling/underwater coatings, etc., can solve the problems of poor comprehensive performance of hard coatings, and achieve the effect of improving flatness and reducing craters

Active Publication Date: 2021-03-26
宁波安特弗新材料科技有限公司
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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 overall performance of existing hard coating films, the invention provides a photocurable composition and hard coating film

Method used

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  • A kind of photocurable composition and hard coating film
  • A kind of photocurable composition and hard coating film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0085] The preparation method of the hard coat film provided by the present invention is as follows: configuring a photocurable composition, coating the photocurable composition on a substrate, drying the formed coating at 80-90°C for 2 minutes, and then activating the energy by ionizing radiation Radiation cures the dried coating to obtain a hard coating.

[0086] The performance of the hard coating provided by the invention is tested according to the following methods:

[0087] (1) Haze, total light transmittance

[0088] Nippon Denshoku NDH 2000N haze meter was used to measure by transmitted light method.

[0089] (2) Pencil hardness

[0090] Product pencil hardness was measured using an Elcometer 3086 Pencil Hardness Tester. Measurement method: use a Mitsubishi pencil with a hardness of H~3H, draw 5 lines under a load of 500g, then observe whether the hard coating is scratched, and judge according to the following standards.

[0091] judgement standard

[0092] Scratc...

Embodiment 1

[0115] The invention provides a photocurable composition and a hard coating film, the hard coating film includes a base material and a hardened layer, the hardened layer contains conductive particles; the hardened layer is formed by curing the photocurable composition.

[0116] 20 parts by weight of hexafunctional aliphatic urethane acrylate oligomer, 10 parts by weight of trifunctional fluorine-containing methyl acrylate, 30 parts by weight of multifunctional reactive monomer trimethylolpropane triacrylate, 0.5 parts by weight Photoinitiator 184, the leveling agent MEGAFACE F440 of 0.1 weight part, the antifouling agent RS-90 of 0.5 weight part, the conductive particle lipophilic ATO (antimony-doped tin dioxide) of 0.5 weight part, the solvent D of 15 weight parts Ketone and 10 parts by weight of solvent propylene glycol monomethyl ether are mixed to obtain a photocurable composition.

[0117] The above-mentioned photocurable composition was coated on one side of an optical-g...

Embodiment 2

[0119] Photocurable composition and hard coat film as provided in Example 1.

[0120] 30 parts by weight of eight-functional aliphatic urethane acrylate oligomer, 15 parts by weight of trifunctional fluorine-containing butyl acrylate, 10 parts by weight of multifunctional active monomer pentaerythritol triacrylate, and 1.5 parts by weight of photoinitiator 1173, 0.3 parts by weight of leveling agent BYK-333, 2.0 parts by weight of antifouling agent RS-75, 1.5 parts by weight of conductive particle oily ATO, 20 parts by weight of solvent 4-methyl-2-pentanone, 5 parts by weight Parts of solvent ethyl acetate were mixed to obtain a photocurable composition.

[0121] The above photocurable composition was coated on one side of an optical-grade polyethylene terephthalate film (manufactured by Toray Corporation, Japan, trade name; U48) with a thickness of 50 μm. After drying the formed coating at 80-90°C for 2 minutes, at 400mJ / cm 2 The amount of light, the dried coating is cured ...

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Abstract

The invention relates to the field of UV photocuring coating, in particular to a photocuring composition and a hard coating film. In order to solve the problem that the conventional hard coating filmhas bad comprehensive performance, the invention provides the photocuring composition and the hard coating film. The photocuring composition comprises the following components in parts by weight: 20 to 40 parts of high-functionality polyurethane acrylate oligomer, 10 to 20 parts of low-functionality fluorinated acrylate oligomers, 5 to 30 parts of high-functionality active monomers, 0.5 to 6 partsof a photoinitiator, 0.1 to 1 part of a leveling agent, 0.5 to 5 parts of an anti-fouling agent, 0.5 to 3 parts of conductive particles and 25 to 50 parts of a solvent. The hard coating film is formed by the photocuring composition provided by the invention; and the hard coating film has the characteristics of anti-fouling property, anti-static property, high wear resistance, low haze and the like, and also has high forming property and excellent comprehensive property.

Description

technical field [0001] The invention relates to the field of UV photocurable coatings, in particular to a photocurable composition and a hard coating film. Background technique [0002] With the development of modern information and communication technology, tablet computers and large-screen smart phones have been widely used in various fields. However, in the process of using the touch screen, the touch screen is often operated by hand. coating film. However, because the traditional hard coating itself only has the function of high hardness, only the traditional flat screen can be used in the later die-cutting, and the curved screen with a certain curvature at the edge cannot be formed well. In addition, the surface of the touch screen is easy to be stained or Moreover, due to the great impact of static electricity on the touch screen, the surface resistance of the general PET film itself is 1×10 14 Above Ω, it is easy to accumulate charge to generate static electricity, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D5/16C09D5/24C09D7/63C08J7/046C08J7/044C08L67/02
CPCC08J2367/02C08J2475/14C09D5/1637C09D5/1687C09D5/24C09D175/14C08J7/0427C08L27/18C08L27/20C08L27/12C08L71/00C08K3/22
Inventor 史良李宇芬张克然张永汉
Owner 宁波安特弗新材料科技有限公司
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