High-strength flexible transparent wear-resistant hardened coating on the surface of a folding screen and its preparation method

A hardened coating and high-strength technology, which is applied in chemical instruments and methods, preparation of organic compounds, coatings, etc., can solve the problem that the wear resistance of the coating cannot achieve better results, the limit of bending times, hardness and coating The flexibility of the layer is difficult to achieve the effect of improving the transparent display effect, improving the wear resistance, and improving the shading coefficient

Active Publication Date: 2021-07-30
SHUNDE POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical solutions mentioned in the above-mentioned patents and documents can improve the hardness and wear resistance of flexible transparent polymer membranes, but the above-mentioned solutions are difficult to achieve a good balance between the hardness of the hardened coating and the flexibility of the coating. Once the hardness of the coating is too hard, the number of bending times is limited. If the hardness is not hard enough, the bending resistance is better, but the wear resistance of the coating cannot achieve better results.

Method used

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  • High-strength flexible transparent wear-resistant hardened coating on the surface of a folding screen and its preparation method
  • High-strength flexible transparent wear-resistant hardened coating on the surface of a folding screen and its preparation method
  • High-strength flexible transparent wear-resistant hardened coating on the surface of a folding screen and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Synthesis of Naphthalene Cyclic Polyethylene Glycol Acrylate

[0026] In solvent A, add a naphthalene ring-type tetrafunctional epoxy resin (HP-4700 from DIC Japan), polyethylene glycol methacrylate and a basic catalyst, and react at a temperature of 80°C for 1 hour, after purification Naphthalene ring-type polyethylene glycol acrylate can be obtained, wherein the mass ratio of naphthalene ring-type tetrafunctional epoxy resin, polyethylene glycol methacrylate and basic catalyst is 1:1:0.01, and its synthetic route As shown in the following formula:

[0027]

[0028] where n is 5;

[0029] The basic catalyst is triethylamine, and the solvent A is formamide.

[0030] (2) Preparation of UV curing hardening solution

[0031] Uniformly mix naphthalene ring type polyethylene glycol acrylate, diluent, photoinitiator and octavinyl-POSS to obtain UV curing hardening solution, naphthalene ring type polyethylene glycol acrylate, diluent, photoinitiator and The octaviny...

Embodiment 2

[0035] (1) Synthesis of Naphthalene Cyclic Polyethylene Glycol Acrylate

[0036] In solvent A, add a naphthalene ring-type tetrafunctional epoxy resin (HP-4700 from DIC Japan), polyethylene glycol methacrylate and a basic catalyst, and react at a temperature of 120°C for 4 hours, after purification Naphthalene ring-type polyethylene glycol acrylate can be obtained, wherein the mass ratio of naphthalene ring-type tetrafunctional epoxy resin, polyethylene glycol methacrylate and basic catalyst is 1:5:0.04, and its synthetic route As shown in the following formula:

[0037]

[0038] where n is 15;

[0039] The basic catalyst is sodium hydroxide, and the solvent A is tetramethylethylenediamine.

[0040] (2) Preparation of UV curing hardening solution

[0041] Mix naphthalene ring-type polyethylene glycol acrylate, diluent, photoinitiator and octavinyl-POSS evenly to obtain UV curing liquid, in which naphthalene ring type polyethylene glycol acrylate, diluent, photoinitiator T...

Embodiment 3

[0045] (1) Synthesis of Naphthalene Cyclic Polyethylene Glycol Acrylate

[0046] In solvent A, add a naphthalene ring-type tetrafunctional epoxy resin (HP-4700 from DIC Japan), polyethylene glycol methacrylate and a basic catalyst, and react at a temperature of 120°C for 4 hours, after purification Naphthalene ring-type polyethylene glycol acrylate can be obtained, wherein the mass ratio of naphthalene ring-type tetrafunctional epoxy resin, polyethylene glycol methacrylate and basic catalyst is 1:1:0.01, and its synthetic route As shown in the following formula:

[0047]

[0048] where n is 10;

[0049] The basic catalyst is potassium carbonate, and the solvent A is dioxane.

[0050] (2) Preparation of UV curing hardening solution

[0051] Mix naphthalene ring-type polyethylene glycol acrylate, diluent, photoinitiator and octavinyl-POSS evenly to obtain UV curing liquid, in which naphthalene ring type polyethylene glycol acrylate, diluent, photoinitiator The mass ratio ...

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PUM

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Abstract

The invention relates to a high-strength flexible transparent wear-resistant hardened coating on the surface of a folding screen mobile phone and a preparation method thereof. agent, photoinitiator and octavinyl‑POSS are evenly mixed. It can improve the hardness and wear resistance of the flexible transparent polymer film. It has a good combination of rigidity and flexibility. It can combine hardness and flexibility as well as wear resistance and hardness. The bending times of the coating will not be affected. Limit, good bending resistance, and good wear resistance.

Description

technical field [0001] The invention belongs to the field of flexible hardened coating on the surface of a folding screen mobile phone, in particular to a naphthalene ring-type acrylic resin and a high-strength flexible transparent wear-resistant hardened coating prepared therefrom. Background technique [0002] With the development of smart phones, folding screen smart phones came into being. Due to the bending characteristics of folding screen phones, glass cannot be used as the cover on the surface, and transparent polymer film is required; currently the most widely used polymer in the industry The membrane material cover is transparent polyimide, that is, CPI material, such as Royole's FlexPai, Samsung's Galaxy Fold and Huawei's mate all use transparent polyimide. However, the surface of this kind of polyimide is far from glass in terms of modulus, hardness, wear resistance and dirt resistance. Therefore, it is necessary to add a layer of hardened coating on the surface ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D171/02C09D183/07C09D7/65C08G65/331C07C67/29C07C69/54
CPCC07C67/29C08G65/331C08L2201/10C09D171/02C09D183/04C09D7/65C08L83/04C07C69/54
Inventor 刘锋陈燕舞高仕旭吴嘉培
Owner SHUNDE POLYTECHNIC
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