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Liquid-stage optical transparent glue capable of being subjected to free radical curing and cation curing, and preparation method thereof

An optically clear adhesive, cationic curing technology, applied in the direction of non-polymer adhesive additives, adhesive additives, etc., to achieve the effect of reducing shrinkage and low shrinkage

Inactive Publication Date: 2017-03-29
SHENZHEN DARBOND INTERFACE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a liquid optically transparent adhesive that can be cured by free radicals and cations and a preparation method thereof. The characteristics of cationic curing, under the severe shading of FPC, the liquid optically transparent adhesive can still be cured completely, avoiding the problem of poor aging reliability of the conventional liquid optically transparent adhesive due to poor curing, and the adhesion of the resin to the substrate Excellent focus, suitable for full lamination process of capacitive touch screen

Method used

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  • Liquid-stage optical transparent glue capable of being subjected to free radical curing and cation curing, and preparation method thereof
  • Liquid-stage optical transparent glue capable of being subjected to free radical curing and cation curing, and preparation method thereof
  • Liquid-stage optical transparent glue capable of being subjected to free radical curing and cation curing, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Accurately weigh the polyether urethane acrylate resin of the polyether urethane acrylate resin of 28g vinyl ether end-blocking modification, the polyether glycol of 40g high molecular weight, 30g isooctyl acrylate, 2.5g n-dodecane Base mercaptan, 4g photoinitiator 184, 0.2g light stabilizer 770, add the above-mentioned components in the mixer in turn, mix evenly, after vacuuming and degassing (vacuum degree-0.1MPa, 0.1h), let it stand naturally until Room temperature, airtight packaging, that is.

Embodiment 2

[0031] Accurately weigh the polyether urethane acrylate resin of 32g vinyl ether end-blocking modified polyether urethane acrylate resin, 60g high molecular weight polyether glycol, 15g isobornyl acrylate, 1g trimethylol propane Three (3-mercapto propionate), 2g photoinitiator BP, 1g photoinitiator TPO, 0.6g light stabilizer 622, add above-mentioned each component in the mixer successively, mix evenly, after vacuumizing and defoaming (vacuum degree -0.09MPa, 0.2h), let it stand naturally to room temperature, seal the package, and get it.

Embodiment 3

[0033] Accurately weigh the polyether urethane acrylate resin of the polyether urethane acrylate resin of 20g vinyl ether end-blocking modification, the polyether glycol of 60g high molecular weight, 20g isobornyl methacrylate, 5g trimethylol Propane three (3-mercaptopropionate), 4g photoinitiator 1173, 1g photoinitiator TEPO, 0.2g light stabilizer 292, add above-mentioned each component in the double planetary power mixer in turn, mix evenly, vacuumize After defoaming (vacuum degree -0.08MPa, 0.3h), let it stand naturally to room temperature, and seal the package.

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Abstract

The present invention provides a liquid-stage optical transparent glue capable of being subjected to free radical curing and cation curing, wherein the liquid-stage optical transparent glue comprises the following raw materials: 14-43 parts of a vinyl ether end-capped modified polyether type polyurethane acrylate resin, 21-56 parts of high molecular weight polyether diol, 14-35 parts of an acrylate-based active diluent, 0.9-5 parts of a thiol compound, 1-5 parts of a photoinitiator, and 0.1-1 part of a light stabilizer. According to the present invention, the characteristic that vinyl ether can be subjected to cation curing is utilized, such that the liquid-stage optical transparent glue synchronously has functions of free radical curing and cation curing; the liquid-stage optical transparent glue can be completely cured under the heavy-shading FPC, such that the disadvantage that the curing of the conventional liquid-state optical transparent glue under FPC is not good is solved, and the problem that the glue is not cured to cause the reliability problem is avoided; and the thiol compound is introduced so as to provide the shrinkage reducing effect, such that the shrinkage rate of the product is low.

Description

technical field [0001] The invention relates to a free radical and cationic curable liquid optical transparent glue and a preparation method thereof, belonging to the field of photocurable materials. Background technique [0002] With the continuous upgrading of flat panel display technology, touch screen as a new technology has been continuously applied to mobile phones, computers and other products, especially driven by the tide of mobile Internet, more and more flat panel display products use capacitive touch screen control technology. Capacitive touch technology has advantages over traditional resistive touch technology in terms of multi-touch design, gesture recognition, response speed, sensitivity, durability, and optical characteristics. According to the current production process, capacitive touch screens need to use an adhesive material to assemble each layer of transparent materials during manufacture, so as to eliminate Newton's rings and rainbow phenomena, reduc...

Claims

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Application Information

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IPC IPC(8): C09J171/02C09J175/16C09J11/06
Inventor 潘光君万炜涛陈田安
Owner SHENZHEN DARBOND INTERFACE MATERIALS