Photocurable adhesive composition for screen edge sealing and use thereof

A technology of adhesives and compositions, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of not being able to obtain UV curing speed, OD value, and high bonding strength at the same time, and achieve increased elasticity , Guarantee the bonding strength and the effect of enhancing the adsorption capacity

Active Publication Date: 2020-07-03
上海昀通电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is that in the prior art, the effects of fast UV curing and high OD value and low bonding strength cannot be obtained at the same time, and a new light-curable adhesive composition for screen edge sealing is provided. , when the composition is used for screen edge sealing, it has the advantages of fast UV curing, high OD value and high adhesive strength

Method used

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  • Photocurable adhesive composition for screen edge sealing and use thereof
  • Photocurable adhesive composition for screen edge sealing and use thereof
  • Photocurable adhesive composition for screen edge sealing and use thereof

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preparation example Construction

[0026] A photocurable adhesive composition for screen edge sealing and its use and a preparation method thereof, comprising the following steps:

[0027] The adhesive composition of the present invention can be prepared by putting each raw material of the adhesive composition into the mixing tank in turn according to the ratio requirement, and stirring according to a certain speed and time. The preparation process is carried out under normal temperature and pressure, and needs to be protected from light.

[0028] Zirconium carbide powder described below is selected from Changsha Langfeng Metal Material Co., Ltd.

[0029] The BL 1226 and IRA OYP01 mentioned below are all selected from Qingdao Jiedejia New Material Technology Co., Ltd.

Embodiment 1

[0031] In the first step, put 55kg of aliphatic urethane acrylate, 25kg of 2-(ethoxy)ethoxyethyl acrylic acid and 10kg of hydroxyethyl acrylate into the mixing tank for stirring, and set the stirring speed at about 90-120rpm , stirring for about 10 minutes; the second step, weigh 3kg 1-hydroxycyclohexyl phenyl ketone and 1kg 2,4,6-trimethylbenzoyl-diphenylphosphine oxide or put them into the mixing tank for stirring , the stirring speed is set at about 100-120rpm, and the stirring time is about 20 minutes; in the third step, 1kg of zirconium carbide powder, 1kg of BL 1226 and 4kg of carbon black are put into the mixing tank for stirring, and the stirring speed is set at about 15-30rpm, and the stirring time is For 25 minutes, finally the mixture can be filtered and packaged.

Embodiment 2

[0033] In the first step, weigh 50kg of aliphatic urethane acrylate, 18kg of tetraethylene glycol diacrylate, 10kg of ethoxylated trimethylolpropane triacrylate and 10kg of hydroxypropyl acrylate and put them into the mixing tank for stirring , the stirring speed is set to about 60-120rpm, stirring for about 10 minutes; the second step, 2kg2-methyl-1-(4-methylthiophenyl)-2-morpholino-1-propanone, 0.5kg Isopropylthioxanthone (2, 4 isomeric mixture), 1kg of isooctyl p-N,N-dimethylaminobenzoate and 1.5kg of methyl o-benzoylbenzoate were weighed and put into the mixing tank for stirring , the stirring speed is set at about 100-120rpm, and the stirring time is about 20 minutes; in the third step, 1kg of zirconium carbide powder, 1kg BL 1226, 1kg IRA OYP01 and 4kg of carbon black are put into the mixing tank for stirring, and the stirring speed is set at about 15- 30rpm, the stirring time is 25 minutes, and finally the mixture can be filtered and packaged.

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Abstract

The invention relates to screen edge sealing photocuring adhesive composition and application thereof, and mainly solves the problems that a quick ultraviolet curing effect and a high OD value effect cannot be achieved at the same time and bonding strength is low in the prior art. The screen edge sealing photocuring adhesive composition disclosed by the invention is prepared from the following ingredients in mass percent: 50 to 60% of urethane acrylate low polymer, 30 to 40% of acrylate monomer, 3 to 5% of photoinitiator, 1 to 3% of visible light absorbent and 0.2 to 4% of carbon black, wherein the visible light absorbent can effectively absorb 400 to 800nm visible light. The screen edge sealing photocuring adhesive composition and application thereof, disclosed by the technical scheme of the invention, can be used to better solve the problems and can be applied to assembling LCD and OLED display screen products.

Description

technical field [0001] The invention relates to a photocurable adhesive composition for screen edge sealing and application thereof. Background technique [0002] As the market changes, in order to increase the screen ratio and better visual effects, the borders of LCD and OLED displays are getting narrower and narrower. For narrow borders, the traditional tape bonding process is difficult to operate and has a low yield rate, so more and more manufacturers switch to the adhesive bonding mode. [0003] Polyurethane (PU) adhesives are a class of high polymers polymerized from isocyanates and oligomer polyols. Because its main chain contains a large number of carbamate groups, it endows polyurethane materials with the advantages of high strength, high wear resistance, high elasticity and excellent low temperature resistance, and its hardness can be adjusted in a wide range , so it is widely used in many fields such as adhesives, coatings and composite materials. [0004] Ano...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C09J11/04C09J11/06
CPCC08K3/04C08K3/14C09J11/04C09J11/06C09J175/14
Inventor 朱建国周练
Owner 上海昀通电子科技有限公司
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