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A liquid optical glue

A kind of optical adhesive and liquid technology, applied in the direction of adhesives, non-polymer organic compound adhesives, etc., can solve the problems of shortening the production process and production time, and the problem that the periphery of the screen cannot be cured at one time, so as to shorten the production process and manufacture time, improve surface activity and low-temperature flexibility, and reduce production costs

Active Publication Date: 2016-03-23
东莞市新懿电子材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a liquid optical adhesive for the deficiencies of the prior art, which has many advantages such as good weather resistance, good moisture resistance and heat resistance, and can be cured by ultraviolet light in combination with ultraviolet radiation. The generated heat can be cured, thus solving the phenomenon that the periphery of the screen cannot be cured at one time, greatly shortening the production process and manufacturing time, reducing the defective rate of finished products, and achieving the effects of energy saving, time saving and productivity improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A liquid optical adhesive provided in this embodiment includes the following components in mass percentage:

[0041] Epoxy terminated polysiloxane 65%;

[0042] Closed hexafluoroantimonate 3%;

[0043] 2-Hydroxy-2-methyl-1-phenylacetone 3%;

[0044] Hydroxyethyl methacrylate 12%;

[0045] Hydroxypropyl Methacrylate 13%:

[0046] γ-(2,3-epoxypropoxy)propyltrimethoxysilane 2%;

[0047] 2-(2'-Hydroxy-3',5'-di-tert-phenyl)-5-chlorobenzotriazole 2%.

[0048] Its preparation method comprises the following steps:

[0049] The first step, the preparation of epoxy-terminated polysiloxane: add bisphenol A epoxy resin into the container, and add toluene as a solvent, heat up, when the temperature reaches above 110 ° C, add zinc octoate as a catalyst , then add hydroxyl-terminated polymethylphenylsiloxane, keep warm for 3 hours, water and toluene are continuously distilled out during the reaction, and the obtained solid product is dried in an oven to obtain epoxy-terminated pol...

Embodiment 2

[0053] A liquid optical adhesive provided in this embodiment includes the following components in mass percentage:

[0054] Epoxy terminated polysiloxane 50%;

[0055] Condensate of imidazole and isocyanate 9%;

[0056] Hydroxycyclohexyl phenyl ketone 8%;

[0057] Isobornyl Acrylate 15%;

[0058] 1,6-hexanediol diacrylate 16%;

[0059] γ-(Methacryloyloxy)propyltrimethoxysilane 1%;

[0060] Tertiary butyl hydroquinone 1%.

[0061] The preparation method of the liquid optical adhesive comprises the following steps:

[0062] The first step, the preparation of epoxy-terminated polysiloxane: add bisphenol A epoxy resin into the container, and add toluene as a solvent, heat up, when the temperature reaches above 110 ° C, add zinc octoate as a catalyst , then add hydroxyl-terminated polymethylphenylsiloxane, keep warm for 2 hours, water and toluene are continuously distilled out during the reaction, and the obtained solid product is dried in an oven to obtain epoxy-terminated p...

Embodiment 3

[0066] A liquid optical glue, which includes the following components in mass percentage:

[0067] Epoxy terminated polysiloxane 70%;

[0068] Acid anhydride curing agent 3%;

[0069] 2,4-dihydroxybenzophenone 3.5%;

[0070] Dipropylene glycol acrylate 11%;

[0071] Pentaerythritol triacrylate 10%;

[0072] 2-Hydroxy-4-n-octyloxybenzophenone 2%

[0073] 1,6-Dihydroxybenzotriazole 0.5%

[0074] The preparation method of the liquid optical adhesive comprises the following steps:

[0075] The first step, the preparation of epoxy-terminated polysiloxane: add bisphenol A epoxy resin into the container, and add toluene as a solvent, heat up, when the temperature reaches above 110 ° C, add zinc octoate as a catalyst , then add hydroxyl-terminated polymethylphenylsiloxane, keep warm for 2.5h, water and toluene are continuously distilled out during the reaction, and the obtained solid product is dried in an oven to obtain epoxy-terminated polysiloxane ;

[0076] The second step...

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Abstract

The invention belongs to the technical field of adhesives, and particularly relates to liquid-state optical cement. The optical cement is prepared from the following components in percentage by mass: 50-80 percent of epoxy terminated polysiloxane, 20-40 percent of activated monomer, 0.5-15 percent of a curing agent, 0.5-10 percent of photoinitiator and 1-5 percent of auxiliaries. Compared with the prior art, the invention creatively uses the epoxy terminated polysiloxane as a main component of the liquid-state optical cement; the requirement for light transmittance and refractive index can be met, and the liquid-state optical cement has the characteristics of high humidity resistance and yellowing resistance due to the characteristics of organic silicon resin; the epoxy group serving as a functional group enters the terminated part of the organic silicon resin, the reaction activity and adhesion force of the organic silicon resin can be improved; and the modified organic silicon resin has a relatively good flexibility, and has the advantages of good adhesion performance, small curing shrinking percentage and the like, and the curing temperature of the organic silicon resin can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of adhesives, in particular to a liquid optical adhesive. Background technique [0002] Liquid optical adhesive (LOCA) is a special adhesive used for bonding transparent optical components (such as optical-grade lenses, touch screens, and liquid crystal displays, etc.). ) way to cure. However, during the use of the glue, because there is an opaque ink coating around the screen that blocks the ultraviolet radiation, the glue around the screen cannot be cured at one time. Therefore, four side irradiations are required to achieve the full curing of the glue on the entire screen. As a result, problems such as complex construction technology, long process time, high production cost and low yield rate of finished products have resulted. [0003] In addition, epoxy resin has disadvantages such as poor weather resistance, poor moisture and heat resistance, and is prone to failure when used outdoors. In view of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/02C09J4/06
Inventor 黄剑滨居仁贤黄伟希
Owner 东莞市新懿电子材料技术有限公司