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Antistatic scratch-resistant tempered film

An antistatic and tempered film technology, which is applied in the direction of conductive coatings, coatings, polyurea/polyurethane coatings, etc., can solve the problems of scratch resistance of tempered films, easy dust accumulation of tempered films, loss of antistatic effect of tempered films, etc., to achieve The effect of good antistatic performance or scratch resistance performance

Active Publication Date: 2021-02-02
东莞市东森光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of tempered film is not scratch-resistant. When the paint with antistatic agent or antistatic liquid is scratched, the tempered film will lose its antistatic effect, making it easy to accumulate dust on the tempered film.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053]An antistatic and scratch-resistant tempered film, comprising a tempered film body and a scratch-resistant and antistatic layer located on the side of the tempered film body away from the screen, wherein the preparation method of the antistatic and scratch-resistant tempered film is as follows:

[0054] (1) Preparation of starch-acrylic acid graft copolymer

[0055] S1: Add 30kg of cornstarch into 120kg of water and mix evenly, then heat up to 55°C, reflux and stir for 40min to obtain starch solution A;

[0056] S2: Add 0.05kg of initiator and 0.4kg of crosslinking agent to 40kg of methacrylic acid solution with a mass concentration of 20%, stir until dissolved and mix uniformly to obtain mixture B; wherein, potassium persulfate is used as the initiator in this embodiment , the crosslinking agent is 1,4-butanediol ester;

[0057] S3: Under the protection of nitrogen, add the mixture B to the starch solution A, then raise the temperature to 55°C, reflux and stir for 1 ho...

Embodiment 2

[0065] An antistatic and scratch-resistant tempered film differs from Example 1 in that:

[0066] (1) Preparation of starch-acrylic acid graft copolymer

[0067] S1: Add 37kg of cornstarch into 120kg of water and mix evenly, then heat up to 65°C, reflux and stir for 30min to obtain starch solution A.

[0068] S2: Add 0.1kg of initiator and 0.8kg of crosslinking agent into 50kg of methacrylic acid solution with a mass concentration of 20%, stir until dissolved and mix uniformly to obtain mixture B; wherein, ammonium persulfate is used as the initiator in this embodiment , The cross-linking agent adopts aluminum sulfate.

[0069] S3: Under the protection of nitrogen, add the mixture B to the starch solution A, then raise the temperature to 50°C, reflux and stir for 1.2h, then add 0.6kg of 1,4-hydroquinone, stir well and let it stand for 30min. A starch-acrylic acid graft copolymer was obtained.

[0070] (2) Preparation of scratch-resistant and antistatic filler

[0071] Put ...

Embodiment 3

[0073] An antistatic and scratch-resistant tempered film differs from Example 1 in that the method for preparing the starch-acrylic acid graft copolymer is different, as follows:

[0074] (1) Preparation of starch-acrylic acid graft copolymer

[0075] S1: Add 18kg cornstarch to 80kg water and mix evenly, then heat up to 55°C, reflux and stir for 40min to obtain starch solution A;

[0076] S2: Add 12kg of cornstarch into 40kg of water and mix evenly, then cool down to 10°C, stir and react for 1 hour to obtain starch solution B;

[0077] S3: After uniformly mixing the starch solution A and the starch solution B, a mixture A is obtained;

[0078] S4: Add 0.05kg of initiator and 0.4kg of crosslinking agent to 40kg of methacrylic acid solution with a mass concentration of 20%, stir until dissolved and mix uniformly to obtain mixture B; wherein, the initiator of this embodiment uses potassium persulfate , the crosslinking agent is 1,4-butanediol ester;

[0079] S5: Under the prot...

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Abstract

The invention relates to the field of screen protection films, and particularly discloses an antistatic scratch-resistant tempered film, which comprises a tempered film body, wherein one side, deviating from a screen, of the tempered film body is coated with a scratch-resistant antistatic layer, and a coating material adopted by the scratch-resistant antistatic layer is prepared from the followingraw materials in parts by weight: 65-75 parts of waterborne polyurethane resin, 6-10 parts of scratch-resistant antistatic filler and 0.5-1.5 parts of a curing agent, the scratch-resistant antistaticfiller is prepared from the following raw materials in parts by weight: 10-15 parts of a starch-acrylic acid grafted copolymer, 8-12 parts of magnesium citrate, 2-4 parts of silver carbonate and 15-20 parts of nano glass micro-beads. The antistatic scratch-resistant tempered film disclosed by the invention has antistatic and scratch-resistant effects at the same time.

Description

technical field [0001] The present application relates to the field of screen protective films, more specifically, it relates to an antistatic and scratch-resistant tempered film. Background technique [0002] There are two common screen protectors, one is hydrogel film and the other is tempered film. Among them, the hydrogel film is a soft film made of a layer of thermoplastic polyurethane elastomer rubber or polyethylene terephthalate, which can protect the screen, but it is not resistant to falling. The material of the tempered film is a layer of plexiglass, which can not only protect the screen, but also overcome the shortcomings of the hydraulic film that is not resistant to falling. Therefore, tempered film has become a commonly used protective film for mobile phones, tablet computers, etc. [0003] Among them, in the process of people using mobile phones or tablet computers, the problem of dust accumulation on the tempered film is easy to occur. At present, in the ...

Claims

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Application Information

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IPC IPC(8): C08J7/044C08J7/04C09D175/04C09D151/02C09D5/24C09D7/61C09D7/63C08L67/02
CPCC08J7/044C08J7/0427C09D175/04C09D5/24C09D7/61C09D7/63C09D7/70C08J2367/02C08J2475/04C08L51/02C08K13/04C08K7/20C08K5/098C08K3/26Y02W90/10
Inventor 邓冶波唐建群杨超升
Owner 东莞市东森光电科技有限公司
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