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High-ductility optical hardened film and preparation method thereof

A ductile and hardened film technology, applied in coatings, polyurea/polyurethane coatings, etc., to prevent scratches, excellent molding effect, and good molding performance.

Active Publication Date: 2020-10-30
NINGBO HUGHSTAR ADVANCED MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the technical defects of high ductility and balance of other physical properties that the existing protective film of the same type does not have, and to provide a high ductility optical hardening film and its preparation method

Method used

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  • High-ductility optical hardened film and preparation method thereof
  • High-ductility optical hardened film and preparation method thereof
  • High-ductility optical hardened film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A highly ductile optical hardening film such as figure 1 As shown, it includes a high ductility hardened layer 1 , an undercoat layer 2 and a base layer 3 stacked sequentially from top to bottom.

[0053] In terms of mass percentage, the high-extensibility hardening layer 1 includes 30% of hexafunctional urethane acrylate oligomer (with better flexibility and hardness, as the main film-forming substance), methyl isobutyl ketone 63 %, 2,4,6-trimethylbenzoyl-diphenylphosphine oxide 4%, leveling agent siloxane modified perfluoropolyether polymer (adjusting the performance after film formation) 3%.

[0054] In terms of mass percentage, the primer layer 2 includes 25% of trifunctional urethane acrylate oligomer, 69% of methyl isobutyl ketone, and 6% of 1-hydroxycyclohexyl phenyl ketone.

[0055] The substrate layer 3 is a transparent base film layer.

[0056] The transparent substrate layer 3 of the protective film provided in this embodiment has a special structure and mo...

Embodiment 2

[0065] This embodiment is basically the same as Embodiment 1, the difference is:

[0066] In terms of mass percentage, the high ductility hardening layer 1 includes 38% of hexafunctional urethane acrylate oligomer, 55% of methyl isobutyl ketone, 2,4,6-trimethylbenzoyl - Diphenylphosphine oxide 5%, leveling agent silicone modified perfluoropolyether polymer 2%.

[0067] In terms of mass percentage, the primer layer 2 includes 40% of trifunctional urethane acrylate oligomer, 53% of methyl isobutyl ketone, and 7% of 1-hydroxycyclohexyl phenyl ketone.

[0068] The preparation method of a high ductility optical hardening protective film as described above is basically the same as that of Example 1, the difference is that:

[0069] In the first coating step, the rotation speed of the coating roller is 7-8m / min, the feeding speed of the substrate is 10m / min, the oven temperature is 120°C, the curing time is 2min, and the UV curing energy is 200- 250mJ / cm 2 , the coating thickness ...

Embodiment 3

[0072] This embodiment is basically the same as Embodiment 1, the difference is:

[0073] In terms of mass percentage, the high ductility hardened layer 1 includes 43% of hexafunctional urethane acrylate oligomer, 47% of methyl isobutyl ketone, 2,4,6-trimethylbenzoyl - Diphenylphosphine oxide 5%, leveling agent silicone modified perfluoropolyether polymer 5%.

[0074] In terms of mass percentage, the primer layer 2 includes 55% of trifunctional polyurethane acrylate oligomer, 41% of methyl isobutyl ketone, and 4% of 1-hydroxycyclohexyl phenyl ketone.

[0075] The preparation method of a high ductility optical hardening protective film as described above is basically the same as that of Example 1, the difference is that:

[0076] In the first coating step, the rotation speed of the coating roller is about 10m / min, the feeding speed of the substrate is 12m / min, the oven temperature is 120°C, the curing time is 2min, and the UV curing energy is 200-250mJ / cm 2 , the coating th...

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Abstract

The invention discloses a high-ductility optical hardened film and a preparation method thereof. The high-ductility optical hardened film comprises a high-ductility hardened layer, a bottom coating layer and a base material layer which are sequentially stacked from top to bottom. The protective film disclosed by the invention has high ductility, can be universally applied to screen protection of various mobile phones, can realize various forming modes, and can meet the requirement of product luminous flux by considering fingerprint unlocking and selection of a base material; the protective film has excellent touch hand feeling and wear resistance, can prevent scratching and fingerprint residues under the condition of long-time use, and provides stable, effective and comprehensive protection for a screen.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to a high ductility optical hardening film and a preparation method thereof. Background technique [0002] In recent years, mobile phone products have gradually entered the era of full screens, and various manufacturers have also adopted various screen presentation methods. In order to increase the screen ratio, different methods such as 2.5D / 3D, waterfall screens, and full screens have been adopted. Various molding requirements also determine that the ductility of the hardened coating should not be too low. A hardened layer with too low ductility is prone to cracks during molding or poor shape retention after molding, even after ring testing. . Therefore, there is a need for an optical hardening film that has both hardening properties and high ductility. [0003] At present, there are mainly two schemes for this kind of high ductility optical hardening film: the first sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/046C08J7/043C08J7/04C09D175/14C08L75/04
CPCC08J7/046C08J7/043C08J7/042C09D175/14C08J2375/04C08J2475/14C08L71/02
Inventor 来荣旭董红星刘楷楷
Owner NINGBO HUGHSTAR ADVANCED MATERIAL TECH
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