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Self-exhausting OCA optical adhesive as well as preparation method and application thereof

A self-venting, optical adhesive technology, applied in the field of optical adhesive, can solve the problems of complex production process, high equipment performance requirements, affecting production efficiency, etc., and achieve the effect of improving yield, improving mechanical properties, and improving filling capacity.

Active Publication Date: 2021-03-16
SHENZHEN SAPIENCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Optical glue has good bonding performance and can provide reliable bonding function to the bonding template. Because the problem of ink steps on the touch screen often leads to the generation of air bubbles, the best way is to use vacuum lamination to discharge air bubbles. Vacuum lamination The combination step has high requirements on equipment performance and complex production process, which affects production efficiency

Method used

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  • Self-exhausting OCA optical adhesive as well as preparation method and application thereof
  • Self-exhausting OCA optical adhesive as well as preparation method and application thereof
  • Self-exhausting OCA optical adhesive as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-3

[0047]A fluorine-containing acrylate oligomer, which is prepared by the following steps: Weigh fluorine-containing acrylate monomer, hydroxyethyl methacrylate and heptadecyl acrylate monomer into a container, and pass nitrogen gas to provide protection , the temperature is raised to the temperature shown in Table 2, after constant temperature, mercaptan and cyclohexanone peroxide are added dropwise in turn, and the reaction time is referred to Table 2, and the fluorine-containing acrylate oligomer is obtained.

[0048] Each component content and process parameter in the table 2-preparation example 1-3

[0049]

preparation example 4

[0051] A modified urethane acrylate, which is prepared by the following steps: put urethane acrylate weighing 53kg into a container, blow nitrogen into it, heat to a temperature of 70°C, and place 26kg of amino polysiloxane one by one Add it dropwise into the container and keep it warm for 4.5 hours to obtain the modified polyurethane acrylate.

preparation example 5

[0053] A modified urethane acrylate is prepared by the following steps: put urethane acrylate weighing 67kg into a container, blow nitrogen into it, heat to a temperature of 85°C, and place 38kg of aminopolysiloxane one by one Add it dropwise into the container and keep it warm for 3.5 hours to obtain the modified polyurethane acrylate.

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Abstract

The invention relates to the field of optical adhesive, and particularly discloses self-exhausting OCA optical adhesive and a preparation method and application thereof. The self-exhausting OCA optical adhesive comprises a fluorine-containing acrylate oligomer, a photo-initiator, a cross-linking agent, nano PMMA microspheres, a hydroxyethyl acrylate monomer and polyurethane acrylate. The preparation method comprises the following steps: proportionally adding the optical adhesive raw materials into kneading equipment, and filtering out insoluble substances by a reaction filter screen at high temperature, thereby obtaining the self-exhausting OCA optical adhesive. The application of the self-exhausting OCA optical adhesive comprises the following steps: coating a heavy release film with a self-exhausting OCA optical adhesive, and attaching a light release film after UV curing to obtain the self-exhausting OCA optical adhesive film. According to the self-exhausting OCA optical adhesive disclosed by the invention, the surface tension of an optical adhesive film is reduced by utilizing the fluorine-containing acrylate oligomer, so that the self-exhausting performance of the optical adhesive film is improved, and the laminating yield of a touch display screen module is improved.

Description

technical field [0001] This application relates to the field of optical glue, more specifically, it relates to self-exhausting OCA optical glue and its preparation method and application. Background technique [0002] With the development of domestic technology and the demand for terminal process yield and the rise of folding screens, OCA optical adhesive is one of the important raw materials for touch screens. It is mainly used for bonding materials on touch screens. Optical adhesive films are used to pass through slit precision coating machines. Coated between two layers of release film, it has the effect of capacitive touch sensing. It has the characteristics of high clarity, strong light transmission, water resistance and high temperature resistance. It is mainly used in the bonding of plastic materials such as electronic paper, transparent device bonding, projection screen assembly, aerospace or military optical device assembly, display assembly, and lens assembly. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/06C09J133/12C09J183/10C09J171/02C09J11/04C09J11/08C09J11/06C09J7/30C09J7/10
CPCC08L2205/03C08L2205/035C08L2205/18C09J11/04C09J11/06C09J11/08C09J133/16C09J2433/00C09J7/10C09J7/30C08L33/12C08L83/10C08L71/02C08K5/29C08K5/17C08K5/3412C08K3/36
Inventor 王继宝周子良
Owner SHENZHEN SAPIENCE TECH CO LTD
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