Liquid optical clear adhesive with low solidification energy and preparation method thereof

An optically transparent adhesive and liquid technology, applied in the field of light-curing materials, can solve the problems of large light refraction loss, high curing energy, and large energy consumption, and achieve the effects of improving contrast and clarity, speeding up production efficiency, and reducing refraction loss

Inactive Publication Date: 2013-11-27
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the refractive index of most liquid optically transparent adhesives is low, generally below 1.50, which is greatly different from the refractive index of glass (1.52), so that the refraction loss of light at the interface is relatively large; in addition, it is known that the curing energy of liquid optically transparent adhesives is relatively low. High, generally at 3000mJ / cm 2 Above, the energy consumption is large, and the production efficiency is low

Method used

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  • Liquid optical clear adhesive with low solidification energy and preparation method thereof
  • Liquid optical clear adhesive with low solidification energy and preparation method thereof
  • Liquid optical clear adhesive with low solidification energy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Accurately weigh 30g of hydrogenated polybutadiene urethane acrylate (as shown in the general formula (I), R represents the part of the molecular structure of 1,6-hexamethylene diisocyanate that does not contain isocyanate groups; R 1 Representative-C 3 h 6 -; R 2 Representative-H), 40g liquid polybutadiene resin (Polyoil 110), 30g isooctyl acrylate, 2.5g n-dodecyl mercaptan, 4g photoinitiator 184, 0.2g light stabilizer 770, the above groups Add it to the blender one by one, mix evenly, vacuumize and defoam (vacuum degree -0.1MPa, 0.1h), let it stand naturally to room temperature, and seal the package.

Embodiment 2

[0031] Accurately weigh 28g of hydrogenated polybutadiene-type urethane acrylate (as shown in general formula (I), R represents the part that does not contain isocyanate groups in the molecular structure of isophorone diisocyanate; R 1 Representative-C 3 h 6 -; R 2 Represent-CH 3 ), 60g liquid polybutadiene resin (Polyoil 130), 15g isobornyl acrylate, 1g trimethylolpropane tris(3-mercaptopropionate), 2g photoinitiator BP, 1g photoinitiator TPO, 0.6g For light stabilizer 622, add the above components into the mixer in turn, mix evenly, vacuumize and degas (vacuum degree -0.09MPa, 0.2h), let it stand naturally to room temperature, and seal the package.

Embodiment 3

[0033] Accurately weigh 16g of hydrogenated polybutadiene polyurethane acrylate (as shown in the general formula (I), R represents the part that does not contain isocyanate groups in the molecular structure of methylcyclohexyl diisocyanate; R 1 Representative-C 4 h 8 -; R 2 Represent-CH 3 ), 60g liquid polybutadiene resin (Polyoil 130), 20g isobornyl methacrylate, 5g trimethylolpropane tris (3-mercaptopropionate), 4g photoinitiator 1173, 1g photoinitiator TEPO, 0.2g of light stabilizer 292, add the above components into a double planetary power mixer in turn, mix evenly, after vacuuming and defoaming (vacuum degree -0.08MPa, 0.3h), let it stand naturally to room temperature, and seal the package, that is have to.

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Abstract

The invention relates to a liquid optical clear adhesive with low solidification energy and a preparation method thereof, and belongs to the field of light-cured materials. The liquid optical clear adhesive prepared by the invention consists of the following raw materials in percentage by the gross weight of the raw materials: 14-43% of hydrogenated polybutadiene polyurethane acrylate resin, 21-56% of liquid polybutadiene resin, 14-35% of acrylate active thinner, 0.9-5% of thioalcohol compound, 1-5% of light initiator and 0.1-1% of light stabilizer, and the liquid optical clear adhesive prepared by the invention has a refractive index of 1.50-1.52 and the solidification energy which is less than 3000 mJ / cm<2>, is applicable to the abutting process of a capacitive touch screen, and is particularly applicable to an occasion with a requirement on the low solidification energy.

Description

technical field [0001] The invention relates to a liquid optically transparent glue with low curing energy 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 s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/16
Inventor 潘光君王建斌陈田安
Owner YANTAI DARBOND TECH
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