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Ultraviolet-heat dual curing optical adhesive containing epoxidized polybutadiene resin

A polybutadiene resin, dual-curing technology, used in adhesives, non-polymer organic compound adhesives, etc., can solve the problem that the light transmittance, refractive index, and haze optical properties of the cured product cannot meet the requirements, and it is suitable for occasions. There are limitations, slow post-curing speed, etc., to meet the requirements of optical and physical and chemical properties, reduce equipment investment, and achieve uniform reaction effects

Active Publication Date: 2015-03-25
信泰永合(烟台)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, dark reaction methods such as moisture curing and anaerobic curing have certain limitations, such as: the performance of the cured product is low, the post-curing speed is slow, and the applicable occasions are limited; or even if the adhesive itself meets the above conditions - the performance is relatively low. Good or fast curing speed, but the optical properties of the cured product such as light transmittance, refractive index and haze cannot meet the requirements

Method used

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  • Ultraviolet-heat dual curing optical adhesive containing epoxidized polybutadiene resin
  • Ultraviolet-heat dual curing optical adhesive containing epoxidized polybutadiene resin
  • Ultraviolet-heat dual curing optical adhesive containing epoxidized polybutadiene resin

Examples

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Effect test

Embodiment 1

[0035] A kind of UV-heat dual curing optical adhesive containing epoxidized polybutadiene resin, its composition comprises by weight percentage: 45% of epoxidized polybutadiene resin, 10% of cycloaliphatic epoxy modified acrylate , liquid polybutadiene rubber 5%, acrylate reactive diluent HPMA 12%, acrylate reactive diluent IBOMA 23%, cationic photoinitiator 2610.1%, free radical photoinitiator TPO 0.7%, free radical photoinitiator 1841.7 % and peroxide-initiated curing agent 1,1-bis(tert-butyl peroxide)-3,3,5-trimethylcyclohexane 2.5%.

[0036] 45% epoxidized polybutadiene resin, 10% cycloaliphatic epoxy modified acrylate, 5% liquid polybutadiene rubber, 12% acrylate reactive diluent HPMA and 23% acrylate The active diluent IBOMA is added to the double planetary power mixing mixer and stirred evenly at a speed of 500-1000r / min; 1.7% free radical photoinitiator 184, stir evenly; cool down to 25°C, add 2.5% peroxide to initiate curing agent 1,1-bis(tert-butyl peroxide)-3,3,5-t...

Embodiment 2

[0038] A kind of UV-heat dual curing optical adhesive containing epoxidized polybutadiene resin, its composition comprises by weight percentage: 20% of epoxidized polybutadiene resin, 32% of cycloaliphatic epoxy modified acrylate , liquid polybutadiene rubber 12%, acrylate reactive diluent HPMA 8%, acrylate reactive diluent IBOA 23%, cationic photoinitiator 2610.2%, free radical photoinitiator TPO 1%, free radical photoinitiator 184 2.8% and tert-butyl peroxide (2-ethylhexanoate) 2%.

[0039] 20% epoxidized polybutadiene resin, 32% cycloaliphatic epoxy modified acrylate, 12% liquid polybutadiene rubber, 8% acrylate reactive diluent HPMA and 23% acrylic acid Add the ester active diluent IBOA into the dual planetary power mixing mixer and stir evenly at a speed of 500-1000r / min; under light-shielding conditions, add 0.2% cationic photoinitiator 261 and 1% free radical photoinitiator TPO in sequence and 2.8% of free radical photoinitiator 184, stir evenly; cool down to 25°C, add 2...

Embodiment 3

[0041] A kind of UV-heat dual curing optical adhesive containing epoxidized polybutadiene resin, its composition comprises by weight percentage: epoxidized polybutadiene resin 40%, alicyclic epoxy modified methacrylate 14%, liquid polyisoprene rubber 8%, acrylate reactive diluent HPMA 7.5%, acrylate reactive diluent PET4A 25%, cationic photoinitiator 261 0.1%, free radical photoinitiator TPO0.4%, free Base photoinitiator 184 3% and peroxide initiated curing agent peroxide (2-ethylhexanoic acid) tert-butyl ester 2%.

[0042] 40% epoxidized polybutadiene resin, 14% cycloaliphatic epoxy-modified methacrylate, 8% liquid polyisoprene rubber, 7.5% acrylate reactive diluent HPMA and 25% % acrylate reactive diluent PET4A, put into the double planetary power mixing mixer, stir evenly at 500-1000r / min speed; Initiator TPO and 3% free radical photoinitiator 184, stir evenly; cool down to 25°C, add 2% peroxide to initiate curing agent tert-butyl peroxide (2-ethylhexanoate), and control t...

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Abstract

The invention belongs to the technical field of adhesives, and particularly relates to an ultraviolet-heat dual curing optical adhesive containing epoxidized polybutadiene resin. The ultraviolet-heat dual curing optical adhesive comprises the following components in percentage by weight: 14.5%-45% of epoxidized polybutadiene resin, 10%-40% of alicyclic epoxy modified resin, 5%-15% of polyolefin liquid rubber, 25.5%-35% of an acrylic ester reactive diluent, 2.4%-3.4% of a free radical photoinitiator, 0.1%-0.2% of a cationic photoinitiator and 2%-2.5% of a peroxide initiating curing agent. The optical adhesive disclosed by the invention is relatively completely solidified at a shaded part, a dark adhesive layer part or a thick adhesive layer part, has excellent optical properties such as high refractive index and high transmittance after being solidified, has the advantages of shock resistance, low yellowing coefficient, low haze, low shrinking percentage, easiness in repairing and good flexibility, meets the requirements of optical, physical and chemical properties of display devices, and is suitable for fast-tempo and high-efficiency production processes.

Description

technical field [0001] The invention belongs to the technical field of adhesives, in particular to an ultraviolet-heat dual curing optical adhesive containing epoxidized polybutadiene resin. Background technique [0002] In the manufacture of mobile display devices such as mobile phones and tablet computers, the UV-curable adhesive that meets the optical requirements is filled between the outer layer of the screen, the ITO layer, and the liquid crystal glass substrate. The UV-cured adhesive layer is similar to the refractive index of each layer. , can reduce light scattering and reflection, increase screen contrast and brightness, and improve screen visibility in sunlight and stray light. However, this type of optical-grade UV-curable adhesive also has its own limitations. In the manufacture of screen components and electronic circuit boards, the shaded parts are insufficiently sensitive to ultraviolet light due to the occlusion of frames and components; in other application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06
Inventor 姜毅林志秀林绍盛
Owner 信泰永合(烟台)新材料有限公司
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