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Dual-curable liquid optically transparent adhesive and preparation method thereof

An optically clear adhesive, dual-curing technology, applied in the direction of adhesives, non-polymer organic compound adhesives, non-polymer adhesive additives, etc., to achieve the effect of low shrinkage and reduced 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 dual-curable liquid optically transparent adhesive and a preparation method thereof. The liquid optically transparent adhesive capable of free radical and cationic curing of the present invention has the functions of free radical curing and cationic curing. Features: Under severe shading FPC, the liquid optically transparent adhesive can still be cured completely, avoiding the problem of poor aging reliability of conventional liquid optically transparent adhesives due to poor curing, and the adhesion of the resin to the substrate is excellent , suitable for full lamination process of capacitive touch screen

Method used

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  • Dual-curable liquid optically transparent adhesive and preparation method thereof
  • Dual-curable liquid optically transparent adhesive and preparation method thereof
  • Dual-curable liquid optically transparent adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Accurately weigh 30g oxetane-modified polyether polyurethane acrylate resin, 40g high molecular weight polyether glycol, 30g isooctyl acrylate, 2.5g n-dodecyl mercaptan, 4g photoinitiator 184, 0.2g of light stabilizer 770, add the above components into the mixer in turn, mix evenly, vacuumize and defoam (vacuum degree -0.1MPa, 0.1h), let it stand naturally to room temperature, and seal the package.

Embodiment 2

[0030] Accurately weigh the polyether type urethane acrylate resin modified by 28g oxetane, the polyether glycol of 60g high molecular weight, 15g isobornyl acrylate, 1g trimethylolpropane three (3-mercapto propionate ), 2g of photoinitiator BP, 1g of photoinitiator TPO, 0.6g of light stabilizer 622, the above-mentioned components were added to the mixer in turn, mixed evenly, after vacuuming and defoaming (vacuum degree-0.09MPa, 0.2h), Let it stand naturally to room temperature, seal the package, and get ready.

Embodiment 3

[0032] Accurately weigh the polyether type urethane acrylate resin modified by 16g oxetane, the polyether diol of 60g high molecular weight, 20g isobornyl methacrylate, 5g trimethylol propane three (3-mercaptopropane) Ester), 4g photoinitiator 1173, 1g photoinitiator TEPO, 0.2g light stabilizer 292, add the above-mentioned components in the double planetary power mixing mixer in turn, mix evenly, after vacuuming and degassing (vacuum degree-0.08 MPa, 0.3h), let it stand naturally to room temperature, seal the package, and get ready.

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Abstract

The invention provides a dual-curable liquid optically transparent adhesive. The dual-curable liquid optically transparent adhesive is composed of the following raw materials: 14 to 43 parts of oxetane modified polyether type polyurethane acrylate resin, 21 to 56 parts of polyether glycol with high molecular weight, 14 to 35 parts of an acrylate active diluent, 0.9 to 5 parts of a thiol compound, 1 to 5 parts of a photoinitiator and 0.1 to 1 part of a photostabilizer. The dual-curable liquid optically transparent adhesive provided by the invention has the following advantages: by utilizing the characteristic of cationic curability of oxetane, the liquid optically transparent adhesive simultaneously has functions of free radical curing and cationic curing; the liquid optical transparent adhesive can still achieve complete curing under FPC with severe shading, so the disadvantage of poor curing of a conventional liquid optically transparent adhesive under FPC is overcome, and the problem of reliability due to incapable curing of an adhesive is avoided from generation; in addition, the thiol compound is introduced, so the action of reducing the rate of shrinkage can be exerted, and the shrinkage rate of a product is lower.

Description

technical field [0001] The invention relates to a dual-curable liquid optically 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, reduce light scattering ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/06C08G18/83
Inventor 潘光君万炜涛陈田安
Owner SHENZHEN DARBOND INTERFACE MATERIALS