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LED-UV cured optical adhesive composition, preparation method therefor and cured coating of LED-UV cured optical adhesive composition

A composition and technology of optical adhesive, applied in the field of optical adhesive, can solve the problems of poor comprehensive performance and damaged workpiece, and achieve the effects of fast curing, low viscosity and good temperature resistance

Inactive Publication Date: 2019-07-02
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently used liquid optically transparent adhesives are mainly UV-cured or supplemented by heat-cured, with poor overall performance. UV-cured transfer adhesives are generally cured under high-pressure mercury lamps, and the ultraviolet light generated by high-pressure mercury lamps under working conditions Energy accounts for about 30%, a large part of which is infrared energy. A large amount of infrared energy makes the surface temperature of the workpiece too high during the curing process and causes damage to the workpiece

Method used

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Examples

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preparation example Construction

[0020] The present invention provides a preparation method of LED-UV curable optical adhesive composition. The above-mentioned LED-UV curable optical adhesive composition is mixed and stirred, and the mixed liquid is stirred and dispersed for a period of time by using a high-speed disperser in a light-proof environment, and then the mixed The liquid is put into a vacuum box and vacuumized to remove the air bubbles in the mixed liquid to obtain a transparent liquid optical glue. The preparation method of the LED-UV curing optical adhesive composition is simple, and the conditions are relatively mild, and it is easy to realize and control.

[0021] The invention provides a cured coating of an LED-UV curable optical adhesive composition. The LED-UV curable optical adhesive composition is cured under LED-UV light conditions to form a cured coating. The cured coating has high light transmittance, excellent bonding performance, good temperature resistance, water resistance and weath...

Embodiment 1

[0024] Preparation of LED-UV curable optical adhesive composition: add 10 g of hydroxyl-modified difunctional aliphatic acrylate, 7 g of epoxy polybutadiene acrylate (number average molecular weight: 1000), and 3 g of isobornyl acrylate into a beaker , ethoxyethoxyethylacrylate 1 g, 1-hydroxycyclohexylbenzophenone (184) 0.4 g and 2,4,6-trimethylbenzoyldiphenylphosphine oxide (Lucirin TPO) 0.4 g, use a high-speed disperser to mix and disperse the mixture for 90 minutes in a dark environment, and the stirring speed is 600 r / min;

[0025] At room temperature, put the mixed solution into a vacuum oven, evacuate it, and place it under vacuum conditions for 3 hours to discharge the air bubbles in the mixed solution to obtain a liquid optically transparent adhesive composition sample S1. The viscosity of the sample S1 is 2556 mPa.s ;

[0026] The sample S1 was cured under LED-UV conditions to obtain the cured coating S10, and the curing time was 5 s.

Embodiment 2

[0028] Preparation of LED-UV curable optical adhesive composition: Add 8 g of hydroxyl-modified difunctional aliphatic acrylate, 8 g of epoxy polybutadiene acrylate (number average molecular weight of 1500), propoxylated neon Pentylene glycol diacrylate 1 g, isobornyl acrylate 4 g, 1-hydroxycyclohexyl benzophenone (184) 0.3 g, 2,4,6-trimethylbenzoyl diphenylphosphine oxide (Lucirin TPO ) 0.5 g and UV absorber (2-hydroxy-4-n-octyloxybenzophenone) 0.1 g, the mixture was mixed and dispersed for 90 min using a high-speed disperser in a dark environment, and the stirring speed was 600 r / min ;

[0029] At room temperature, put the mixed solution into a vacuum oven, evacuate it, and place it under vacuum conditions for 3 hours to discharge the air bubbles in the mixed solution to obtain a liquid optically transparent adhesive composition sample S2. The viscosity of the sample S2 is 2848 mPa.s ;

[0030] The sample S2 was cured under LED-UV conditions to obtain the cured coating S20...

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Abstract

The invention provides an LED-UV cured optical adhesive composition, a preparation method therefor and a cured coating of the LED-UV cured optical adhesive composition. The LED-UV cured optical adhesive composition comprises epoxy modified acrylate, butadiene modified acrylate, a reactive diluent and a photoinitiator and can be obtained through uniformly mixing and stirring the above-mentioned substances. The cured coating can be obtained through curing the LED-UV cured optical adhesive composition. The LED-UV cured optical adhesive composition provided by the invention has the advantages thatthe viscosity is low, the fluidity is good, the processing is easy, the curing speed is high, and the LED-UV cured optical adhesive composition can be cured by low energy; and the coating formed through curing the LED-UV cured optical adhesive composition is high in light transmittance and excellent in adhesive property and has good temperature resistance, water resistance and weather resistance.

Description

technical field [0001] The invention relates to the field of optical glue, in particular to an LED-UV curable optical glue composition, a preparation method and a cured coating thereof. Background technique [0002] Full bonding technology is the mainstream development trend of high-end smart phone and tablet panel bonding, that is, the panel and touch screen are completely bonded together in a seamless manner. Compared with frame stickers, using optical tape to fill the air layer between the touch screen and the display panel can provide better screen reflection image display effects. In recent years, with the rise of the smartphone industry, touch screens have gained large-scale industrial applications. In the production of touch screens, a large amount of optical glue is required, mainly optical tape, and a small amount of liquid transparent glue. [0003] Optical tapes are prone to air bubbles during the lamination process. The lamination of optical tapes needs to be p...

Claims

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Application Information

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IPC IPC(8): C09J163/10C09J147/00C09J11/06
CPCC08K5/132C09J11/06C09J147/00C09J163/10
Inventor 于典罗文海
Owner BYD CO LTD
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