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Optical liquid adhesive with high weather resistance and preparation method thereof

A high weather resistance, adhesive technology, applied in the direction of adhesives, non-polymer adhesive additives, non-polymer organic compound adhesives, etc., can solve the problem of not meeting product requirements, high refraction and atomization, insufficient flexibility problems, to achieve the effect of small curing shrinkage, low refractive index and low energy

Inactive Publication Date: 2014-05-28
深圳市中显微电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to overcome the technical problems of existing liquid optical adhesives (LOCA) such as poor weather resistance, poor adhesion, low light transmittance, high refraction and atomization, insufficient flexibility, and failure to meet product requirements.

Method used

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  • Optical liquid adhesive with high weather resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The raw materials for making the highly weather-resistant liquid optical adhesive of Example 1 include the following ingredients in proportion by weight:

[0024] Resin Oligomer: Urethane Acrylate 28%

[0025] Epoxy Acrylate 22%

[0026] Reactive Thinner: 6-Hexanediol Diacrylate 23%

[0027] Tripropylene glycol diacrylate 18%

[0028] Photosensitizer: 2-Hydroxy-2-methyl-1-phenyl-1-propanone 1.6%

[0029] Photosensitizer: Ethyl-p-dimethylaminobenzoate 1.2%

[0030] Cross-linking tackifier: Bis-γ-trimethoxysilylpropylamine 1.5%

[0031] Antioxidant: N,N'-bis-[3-(3,5-di-tert-butyl

[0032] yl-4-hydroxyphenyl)propionyl]hydrazine 4.7%

[0033] Add the resin oligomer and reactive diluent weighed according to the above percentage ratio into the reaction kettle, stir at room temperature (25°C) for 1.5 hours, and then add photosensitizer, photosensitization accelerator, crosslinking tackifier, Antioxidant, stirred for 4 hours, until mixed evenly, sampling control technica...

Embodiment 2

[0035] The raw materials for making the highly weather-resistant liquid optical adhesive of embodiment 2 include the following ingredients in proportion by weight:

[0036] Resin Oligomer: Urethane Acrylate 58%

[0037] Reactive diluent: Tripropylene glycol diacrylate 31%

[0038] Photosensitizer: 2-Hydroxy-2-methyl-1-phenyl-1-propanone 3.5%

[0039] Photosensitizer: Ethyl-p-dimethylaminobenzoate 1.4%

[0040] Cross-linking tackifier: γ-Aminopropyltriethoxysilane 1.9 %

[0041] Antioxidant: N,N'-bis-[3-(3,5-di-tert-butyl

[0042] yl-4-hydroxyphenyl)propionyl]hydrazine 4.2%

[0043] Similarly, add the resin oligomer and active diluent weighed according to the above percentage ratio into the reaction kettle, stir at 40°C for 1.5 hours, and then add photosensitizer, photosensitization accelerator, crosslinking tackifier, anti- Oxygen agent, stirred for 4 hours, until mixed evenly, sampling control technical indicators, detection of quality parameters in the usual detection m...

Embodiment 3

[0045] The highly weather-resistant liquid optical adhesive of embodiment 3 comprises the following raw material formula feeding and making by weight ratio:

[0046] Resin Oligomer: Epoxy Acrylate 55%

[0047] Reactive diluent: 6-Hexanediol diacrylate 12%

[0048] Tripropylene glycol diacrylate 23%

[0049] Photosensitizer: 2-Hydroxy-2-methyl-1-phenyl-1-propanone 3.7%

[0050]Photosensitizer: Ethyl-p-dimethylaminobenzoate 0.5%

[0051] Cross-linking tackifier: γ-Aminopropyltriethoxysilane 1.3%

[0052] Antioxidant: Thiodiethylene bis[3-(3,5-ditert-

[0053] Butyl-4-hydroxyphenyl) ester] 4.5%

[0054] The resin oligomer and reactive diluent weighed according to the above weight percentage ratio were added to the reaction kettle, stirred at 30°C for 1.5 hours, and then photosensitizer, photosensitization accelerator, cross-linking tackifier, antioxidant Stir for 4 hours until the mixture is uniform, take samples and check the technical indicators, check the quality paramet...

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Abstract

The invention relates to the technical field of adhesives, in particular to an optical liquid adhesive with high weather resistance and a preparation method thereof. The optical liquid adhesive with the high weather resistance is a bonding agent prepared by raw materials in percentage by weight as follows: 45%-65% of resin oligomer, 29%-48% of a reactive diluent, 1.5%-4% of a photosensitizer, 0.4%-1.4% of a photosensitive accelerating agent, 1%-2% of a crosslinking thickening agent and 3%-5% of an antioxidant. The optical liquid adhesive has the advantage of high weather resistance, embrittlement resistance at the temperature of subzero 50 DEG C, resistance to high temperature of 120 DEG C, water resistance, resistance to weak acid and weak base, high bonding strength and light transmittance, small cure shrinkage rate, simple manufacturing process, environment protection and the like, and is particularly suitable for being applied to touch screens of electronic products such as a mobile phone, a television, a liquid crystal display computer, an industrial monitor and the like.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a highly weather-resistant liquid optical adhesive and a preparation method thereof. Background technique [0002] Mobile phones and electronic instrument displays are undergoing a revolution, and traditional resistive touch screens are gradually being replaced by capacitive touch screens. Capacitive touch screens are not only used in mobile phones, computers, and TV display screens, but also have a large number of applications in various sectors of the national economy such as process site monitoring and information remote transmission. [0003] A typical capacitive touch screen is a four-layer composite glass screen, and the outermost silica glass protective layer and the touch sensor screen (Sensor screen) need to be glued and fixed. Most of the capacitive touch screens in the prior art are bonded with double-sided tape (OCA tape). The disadvantage of the gluing method usi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J11/06
Inventor 姚伏恒周自立李坤周卫华刘海峰
Owner 深圳市中显微电子有限公司
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