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Polyacrylate elastomer, hybrid network system material thereof and display screen protective film prepared from polyacrylate elastomer and hybrid network system material

A polyacrylate, acrylate technology, applied in chemical instruments and methods, synthetic resin layered products, film/sheet release liners, etc., can solve problems such as poor impact resistance, difficult folding, and easy creases , to achieve the effect of good impact resistance and good flexibility

Inactive Publication Date: 2021-11-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, these existing protective films have performance defects such as high hardness, low fit, poor impact resistance, and difficulty in folding.
When these protective films are used for screens such as folding screens and flexible screens, there are disadvantages such as easy creases, poor elastic recovery, and difficulty in turning outwards.
This not only seriously affects the experience of using electronic equipment, but also cannot protect the screen well (Tsujimura T.OLED display fundamentals and applications[M].JohnWiley&Sons,2017)

Method used

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  • Polyacrylate elastomer, hybrid network system material thereof and display screen protective film prepared from polyacrylate elastomer and hybrid network system material
  • Polyacrylate elastomer, hybrid network system material thereof and display screen protective film prepared from polyacrylate elastomer and hybrid network system material
  • Polyacrylate elastomer, hybrid network system material thereof and display screen protective film prepared from polyacrylate elastomer and hybrid network system material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 polyacrylate elastomer

[0036] This embodiment provides a random copolymer composed of butyl acrylate repeating units and acrylate repeating units containing UPy groups. Its molecular structural formula is as follows:

[0037]

[0038] Among them, the value of m is 45, and the value of n is 104

[0039] The preparation method of the polyacrylate elastomer of this embodiment is: Utilize radical polymerization, synthesize acrylate elastomer, 70 parts of butyl acrylate, 30 parts of Upy monomer, 0.001 part of AIBN, 0.2 part of ethyl acetate solvent, in Reaction at 70°C for 12h. The molecular formula of Upy monomer is as follows:

[0040]

[0041] The polyacrylate elastomer described in this embodiment, its damping performance adopts the method test specified in ASTM E756-1993 standard, the result is as follows figure 1 As shown, the temperature range where the loss factor is higher than 0.3 is from -50°C to 60°C, which has a wide temperature range, w...

Embodiment 2

[0042] Embodiment 2 display screen protective film

[0043]In this example, the polyacrylate elastomer of Example 1 is used, and 2 g of the polyacrylate elastomer material is dissolved in 1 ml of tetrahydrofuran solvent to obtain a tetrahydrofuran solution of the polyacrylate elastomer, and the solution of the polyacrylate elastomer is poured on a 50 μm thick On the transparent PET plastic film (company: Suzhou Aiqiu Electronics Co., Ltd., product model: AQ2ST31HC), a protective film with a dry film thickness of 50 μm was obtained by precision coating, dried and cured in a vacuum oven at 80 ° C for 2-3 hours, and coated A 50 μm thick release PET film (company: Suzhou Aiqiu Electronics Co., Ltd., product model: AQ-LX3T) was attached to the layer to obtain a protective film for the display screen.

[0044] The 0.5mm thick tempered glass protected by the protective film can withstand the free fall of a small steel ball (diameter 10mm, weight 4g) with a critical height of 115cm. ...

Embodiment 3

[0045] Embodiment 3 display screen protective film

[0046] This embodiment adopts the polyacrylate elastomer of Example 1, and dissolves 1 g of polyacrylate elastomer, 1 g of polydimethylsiloxane (number average molecular weight 80,000 g / mol) and a small amount of curing agent DCP in 1 ml of tetrahydrofuran solvent, Obtain the mixed solution, pour the mixed solution on a transparent PET plastic film (company: Suzhou Aiqiu Electronics Co., Ltd., product model: AQ2ST31HC) with a thickness of 50 μm, and adopt a precise coating method to obtain a protective film with a dry film thickness of 50 μm. Dry and cure in a vacuum oven at 80°C for 2-3 hours, and attach a 50 μm thick release PET (company: Suzhou Aiqiu Electronics Co., Ltd., product model: AQ-LX3T) to the coating surface to obtain a display screen protection film.

[0047] The 0.5mm thick tempered glass protected by the protective film of the display screen can withstand the free fall of a small steel ball (diameter 10mm, w...

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Abstract

The invention relates to the technical field of display screen protection, in particular to a polyacrylate elastomer, a hybrid network system material thereof and a display screen protection film prepared from the polyacrylate elastomer and the hybrid network system material . The polyacrylate elastomer provided by the invention is a random copolymer composed of a butyl acrylate repeating unit and an acrylate repeating unit containing a UPy group. The invention further provides a hybrid network system material formed by the polyacrylate elastomer and other elastomers. The polyacrylate elastomer and the hybrid network system material can be used for preparing the display screen protective film, and the prepared display screen protective film has good flexibility, light transmission performance, impact resistance, elastic recovery capability and fitness. The protective film can be used for protecting novel screens such as 2.5 D screens, 3D screens, curved screens, flexible folding screens and the like. In the using process, the protective film can be folded, folding marks are not prone to occurring when the protective film is folded, the good protective effect on the display screen and the good use experience of a user are both considered, and the good application prospect is achieved.

Description

technical field [0001] The invention relates to the technical field of display screen protection, in particular to a polyacrylate elastomer, its hybrid network system material and a display screen protective film made of the same. Background technique [0002] With the advancement of technology and the upgrading of consumers' experience and requirements for the performance of electronic devices, the screens of many electronic devices are gradually developing towards 2.5D, 3D, curved screens and flexible folding screens. The performance requirements and structure of the corresponding display screen protective film also need to be changed accordingly. [0003] The display protective film was originally a single PET film, and later developed into a TPU film, TPU and PET multilayer film, etc. For the flexible film, the Chinese invention patent application "CN201710567238.6 A Flexible Explosion-proof Protective Film" provides a flexible explosion-proof protective film, which inc...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/36C09J7/25C09J7/30C09J7/40B32B27/08B32B27/30B32B27/36B32B27/28
CPCC08F220/1804C09J7/30C09J7/255C09J7/405B32B27/08B32B27/308B32B27/36B32B27/283C09J2301/122C09J2467/006C09J2467/005C09J2203/318B32B2307/558C08F220/36
Inventor 熊慧兀琪吴锦荣马辰霖黄光速
Owner SICHUAN UNIV
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