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Self-repairing protective film and preparation method thereof

A self-healing and protective film technology, applied in the direction of film/flaky adhesives, coatings, adhesives, etc., can solve the problems of poor strength and affecting the integrity of the appearance, and achieve high light transmittance and good scratch recovery Sexuality, maintaining luster and texture

Inactive Publication Date: 2021-05-28
HUNAN SHANGXIN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the elasticity, light transmittance, and strength of these protective films are relatively poor, and they will leave obvious scratches when they encounter scratches, which will greatly affect the integrity of the appearance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The self-healing protective film of this embodiment comprises a PET film layer and a release film layer in turn, the side of the PET film layer in contact with the release film is coated with an adhesive layer, and the other side of the PET film layer is coated with Self-healing layer, described self-healing layer is made of the following raw materials by weight:

[0025] Ultraviolet absorber UV-015 parts

[0026] 40 parts of polypropylene glycol

[0027] 40 parts of dicyclohexyl diisocyanate

[0028] Butanediol 4 parts

[0029] 1 part of organotin compound.

[0030] The thickness of the self-healing layer is 5um.

[0031] The preparation method of the self-repairing protective film of the present embodiment comprises the following steps:

[0032] (1) Weigh the raw materials of the self-repairing layer according to the required weight, mix them together and stir them evenly to obtain a slurry;

[0033] (2) Coat the mixed slurry on the PET film and heat it at 90°C ...

Embodiment 2

[0036] The self-healing protective film of this embodiment comprises a PET film layer and a release film layer in turn, the side of the PET film layer in contact with the release film is coated with an adhesive layer, and the other side of the PET film layer is coated with Self-healing layer, described self-healing layer is made of the following raw materials by weight:

[0037] Ultraviolet absorber UV-010 parts

[0038] 50 parts of polypropylene glycol

[0039] 50 parts of dicyclohexyl diisocyanate

[0040] Butanediol 6 parts

[0041] 1.5 parts of organotin compound.

[0042] The preparation method of the self-repairing protective film of the present embodiment comprises the following steps:

[0043] (1) Weigh the raw materials of the self-repairing layer according to the required weight, mix them together and stir them evenly to obtain a slurry;

[0044] (2) Coat the mixed slurry on the PET film and heat it at 70°C for 2 minutes to cure;

[0045] (3) Apply an adhesive ...

Embodiment 3

[0047] A self-healing protective film, which successively includes a PET film layer and a release film layer, the side of the PET film layer in contact with the release film is coated with an adhesive layer, and the other side of the PET film layer is coated with a self-healing film layer. layer, the self-healing layer is made of the following raw materials by weight:

[0048] UV absorber UV-020 parts

[0049] 30 parts of polypropylene glycol

[0050] 30 parts of dicyclohexyl diisocyanate

[0051] Butanediol 2 parts

[0052] 1 part of organotin compound.

[0053] The preparation method of the self-repairing protective film of the present embodiment comprises the following steps:

[0054] (1) Weigh the raw materials of the self-repairing layer according to the required weight, mix them together and stir them evenly to obtain a slurry;

[0055] (2) Coat the mixed slurry on the PET film and heat it at 80°C for 1.5min to cure;

[0056] (3) Apply an adhesive layer on the othe...

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Abstract

The invention relates to a self-repairing protective film which sequentially comprises a PET film layer and a release film layer, the face, making contact with the release film, of the PET film layer is coated with an adhesive layer, and the other face of the PET film layer is coated with a self-repairing layer. The self-repairing layer is prepared from the following raw materials in parts by weight: 10 to 20 parts of an ultraviolet light absorber UV-0, 30 to 50 parts of polypropylene glycol, 30 to 50 parts of dicyclohexyl methane diisocyanate, 2 to 6 parts of butanediol and 0.5 to 1.5 parts of an organic tin compound. The preparation method of the self-repairing protective film comprises the following steps: (1) weighing the raw materials of the self-repairing layer according to the required weight, mixing together, and uniformly stirring to obtain slurry; and (2) coating the PET film with the mixed slurry, and heating the PET film at 60-120 DEG C for 1-3 minutes for curing; and (3) coating the adhesive layer on the other side of the PET film and covering the release film.

Description

technical field [0001] The invention relates to a protective film, in particular to a self-repairing protective film and a preparation method thereof. Background technique [0002] Shock-absorbing protective film is a kind of polymer protective film attached to the front and rear screens (glass or plastic) of mobile phones. Various functional protective films have appeared on the market, such as AR anti-reflective film, AG matte anti-reflection film, tempered film, privacy film, mirror film and other films. However, the elasticity, light transmittance, and strength of these protective films are relatively poor, and obvious scratches will be left when encountering scratches, which will greatly affect the integrity of the appearance. Therefore, how to improve the anti-scratch performance and self-healing performance of the film itself is a problem that those skilled in the art need to consider. Contents of the invention [0003] In order to solve the above technical proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25C09D175/08
CPCC09J7/255C09D175/08C09J2475/00C09J2467/006
Inventor 江敏罗顺桥陈慧君
Owner HUNAN SHANGXIN NEW MATERIAL TECH CO LTD
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