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UV-OCA adhesive for TAC film bonding and preparation method thereof

A UV-OCA and film bonding technology, which is applied in the direction of adhesives, adhesive types, adhesive additives, etc., can solve the problems that the development of adhesives is in a blank stage, and achieve the effects of rapid curing, improved production efficiency, and high adhesion

Inactive Publication Date: 2020-01-03
无锡阿尔梅新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The currently commercially available OCA optical adhesive is mainly used for bonding the inner screen of mobile phones. It is an adhesive specially designed for glass bonding. There is no application specifically for TAC film bonding, and it can be used to bond untreated TAC films. The development of adhesives is still in a blank stage

Method used

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  • UV-OCA adhesive for TAC film bonding and preparation method thereof
  • UV-OCA adhesive for TAC film bonding and preparation method thereof
  • UV-OCA adhesive for TAC film bonding and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method for a UV-OCA adhesive for TAC film bonding, comprising the following steps:

[0028] (1) 8g UV-curable cellulose resin JS-113, 15g hexanediol diacrylate (HDDA), 20g tripropylene glycol diacrylate (TPGDA), 25g acryloylmorpholine (ACMO) and 8g isoborneol Acrylic acid ester (IBOA) was mixed, and stirred at a speed of 2000rpm for 1 hour to make a homogeneous composition;

[0029] (2) Add 20g resin 2230 (Wuxi Boqiang), 3g photoinitiator TPO, 0.05g defoamer BYK-014, 0.95g adhesion promoter PM-2 to the above composition and continue stirring for 30min to make an adhesive.

[0030] (3) The prepared adhesive uses a laminating machine to bond two layers of untreated TAC film with a thickness of 200 μm, and then uses a high-pressure mercury lamp for ultraviolet (UV) irradiation, the irradiation height is 50mm, the conveyor belt speed is 10m / min, and the light energy 200mJ / cm 2 , to obtain samples for evaluation.

Embodiment 2

[0032] A preparation method for a UV-OCA adhesive for TAC film bonding, comprising the following steps:

[0033] (1) Mix 15g UV-curable cellulose resin JS-113, 15gHDDA, 13gTPGDA, 25g ACMO and 8g IBOA, and stir at 2000rpm for 1 hour to make a uniform composition;

[0034] (2) Add 20g resin 2230 (Wuxi Boqiang), 3g photoinitiator TPO, 0.05g BYK-014, 0.95g PM-2 to the above composition and continue stirring for 30min to make an adhesive;

[0035] (3) The prepared adhesive uses a laminating machine to bond two layers of untreated TAC films with a thickness of 200 μm, and then uses a high-pressure mercury lamp for UV irradiation, with an irradiation height of 50mm, a conveyor belt speed of 10m / min, and an illumination energy of 200mJ / cm 2 , to obtain samples for evaluation.

Embodiment 3

[0037] A preparation method for a UV-OCA adhesive for TAC film bonding, comprising the following steps:

[0038] (1) Mix 8g UV-curable cellulose resin JS-113, 25gHDDA, 20g TPGDA, 25g ACMO and 8g IBOA, and stir at 2000rpm for 1 hour to make a uniform composition;

[0039] (2) Add 10g resin 2230 (Wuxi Boqiang), 3g photoinitiator TPO, 0.05g BYK-014, 0.95g PM-2 to the above composition and continue stirring for 30min to make an adhesive;

[0040] (3) The prepared adhesive uses a laminating machine to bond two layers of untreated TAC films with a thickness of 200 μm, and then uses a high-pressure mercury lamp for UV irradiation, with an irradiation height of 50mm, a conveyor belt speed of 10m / min, and an illumination energy of 200mJ / cm 2 , to obtain samples for evaluation.

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Abstract

The invention relates to a UV adhesive, in particular to a UV-OCA adhesive for TAC film bonding and a preparation method thereof. The UV-OCA adhesive for TAC film bonding comprises 5-20 parts of aliphatic polyurethane acrylate, 5-10 parts of modified cellulose resin, 10-30 parts of aliphatic polyfunctional acrylate monomer, 20-50 parts of monofunctional acrylate monomer, 1-8 parts of photoinitiator, 0.02-1 part of auxiliary agent and 0.1-2 parts of adhesion promoter. The UV-OCA adhesive is added with the modified cellulose resin with similar structure to TAC, and has high adhesion, rapid curing, no solvent, high light transmittance, and no need to pretreat TAC before bonding, the prepared UV-OCA adhesive has strong adhesion to untreated TAC film, small shrinkage rate, rapid curing, high electronic transmittance, no VOC emission, environmental protection and energy saving.

Description

technical field [0001] The invention relates to a UV adhesive, in particular to a UV-OCA adhesive used for laminating TAC films and a preparation method thereof. [0002] technical background [0003] Triacetate fiber (TAC) is a material with excellent optical properties, high transmittance, and low birefringence. It is widely used in liquid crystal displays and sunglasses industries. PVA hydrosol is usually used for bonding when making sunglasses or polarizers. [0004] PVA hydrosol usually contains polyvinyl acid, borax, aldehydes and deionized water. Among them, aldehydes usually have certain toxicity, and because the adhesive contains water as a solvent, it needs to wait for the deionized water to volatilize in the bonding process to have a reliable adhesive. The bonding fastness is poor, so the bonding speed is slow, and when using PVA bonding, it is necessary to perform a series of treatments such as alkali washing and corona on the TAC film, and the production efficien...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J101/08C09J11/06
CPCC09J11/06C09J175/14C08L1/08C08K5/521
Inventor 强志炯
Owner 无锡阿尔梅新材料有限公司
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