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A kind of liquid optical transparent glue and preparation method thereof

An optically transparent adhesive, liquid technology, applied in adhesives, non-polymer organic compound adhesives, etc., can solve problems such as poor curing, improve contrast and clarity, avoid reliability problems, and reduce refraction loss.

Inactive Publication Date: 2015-12-09
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The beneficial effect of the present invention is: solve the shortcoming that the conventional liquid optical transparent glue is not cured well under FPC, avoid the reliability problem caused by the uncured glue; and the refractive index of the cured film is relatively high, the refractive index is 1.50-1.52 , greatly reducing the refraction loss of light between screen interfaces, improving the contrast and clarity of flat panel displays in strong light environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Accurately weigh 30g of maleic anhydride graft-modified polybutadiene acrylate resin (reacted by Ricon130MA8 and hydroxyethyl acrylate in a molar ratio of 1:1, the reaction temperature is controlled at 90 degrees, after 4 hours of reaction, the infrared test 1785cm -1 The absorption peak of maleic anhydride at the place disappears, and the polybutadiene acrylate resin grafted with maleic anhydride is obtained), 40g liquid polybutadiene resin (Ricon156), 30g isooctyl acrylate, 2.5g n-dec Dialkyl mercaptan, 4g of photoinitiator 184, 0.2g of light stabilizer 770, add the above components into the mixer in turn, mix well, vacuumize to -0.1MPa and defoam for 0.1h, then let it stand naturally to room temperature, Sealed packaging, that is.

Embodiment 2

[0030] Accurately weigh 28g of maleic anhydride graft-modified polybutadiene acrylate resin (reacted by Ricon130MA13 and hydroxypropyl acrylate in a molar ratio of 1:1, the reaction temperature is controlled at 110 degrees, after 5 hours of reaction, the infrared test 1785cm -1 The absorption peak of maleic anhydride at the place disappears, that is, the polybutadiene acrylate resin grafted with maleic anhydride is obtained), 56g liquid polybutadiene resin (Ricon156), 14g isobornyl acrylate, 0.9g trihydroxy Methylpropane tris(3-mercaptopropionate), 1g photoinitiator TPO, 0.6g light stabilizer 622, add the above components into the mixer in turn, mix evenly, vacuumize to -0.09MPa and defoam for 0.2h , let it stand naturally to room temperature, seal the package, and get ready.

Embodiment 3

[0032] Accurately weigh 16g of maleic anhydride graft-modified polybutadiene acrylate resin (reacted by Ricon131MA5 and hydroxyethyl methacrylate in a molar ratio of 1:1, the reaction temperature is controlled at 100 degrees, after 4 hours of reaction, infrared test 1785cm -1 The absorption peak of maleic anhydride at the place disappears, that is, the polybutadiene acrylate resin grafted with maleic anhydride is obtained), 56g liquid polybutadiene resin (Ricon152), 20g isobornyl methacrylate, 5g three Methylolpropane three (3-mercaptopropionate), 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 evacuating to -0.08MPa for 0.3h to defoam, let it stand naturally to room temperature, and seal the package.

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Abstract

The invention discloses a liquid optical transparent adhesive which comprises the following raw materials in percentage by total weight: 14-43% of maleic anhydride graft modified polybutadiene acrylate resin, 21-56% of liquid polybutadiene resin with high vinyl content, 14-35% of acrylic reactive diluent, 0.9-5% of mercaptan compound, 1-5% of photoinitiator and 0.1-1% of light stabilizer. The adhesive has the beneficial effects that the defect that an ordinary liquid optical transparent adhesive is poor in curing property in FPC is solved, the reliability problem caused by an uncured adhesive is avoided, a curing film is high in refractive index which is 1.50-1.52, the refraction loss of light between screen interfaces is greatly reduced, and the contrast ratio and the definition of a flat panel display in a strong light environment are improved.

Description

technical field [0001] The invention relates to a liquid optically transparent adhesive 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 loss, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/02C09J4/06
Inventor 潘光君王建斌陈田安解海华
Owner YANTAI DARBOND TECH