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Ultraviolet curing adhesive for liquid crystal display television side frame and preparation method of ultraviolet curing adhesive

A technology of LCD TV and ultraviolet light, which is applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of product yield decline and low precision, so as to save production costs, improve production efficiency, The effect of improving product quality

Inactive Publication Date: 2014-01-22
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of manual operation is that the precision is not high, and the yield rate of the product decreases

Method used

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  • Ultraviolet curing adhesive for liquid crystal display television side frame and preparation method of ultraviolet curing adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 100 grams of polyester diol with a hydroxyl value of 56 (Qingdao Xinyutian Chemical POL-156) into the reactor, vacuum dehydrate at 115°C for 2 hours, cool down to below 40°C, and add 13.1 grams of toluene Diisocyanate, 0.1 g of dibutyltin dilaurate, react at 60°C for 2.5 hours, add 0.3 g of p-hydroxyanisole, 0.45 g of antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl ) octadecyl propionate, 6.1 grams of hydroxyethyl acrylate, continue to react at 75 ° C for 2 hours, take a sample and measure the infrared spectrum to confirm that the infrared absorption peak of the isocyanate group disappears, and the material is cooled and discharged. polymer [DP1].

[0029] The preparation method of the inert polyurethane prepolymer [IU1] is the same as that of [DP1], except that the amount of toluene diisocyanate added is 17.4 g, 6.1 g of hydroxyethyl acrylate is replaced by 11.6 g of n-butanol, and the rest of the added amount is the same.

[0030] 36.5g of difunctional polyureth...

Embodiment 2

[0032]Add 100 grams of polyester diol with a hydroxyl value of 38 (Qingdao Xinyutian Chemical POL-138) into the reactor, vacuum dehydrate at 115°C for 2 hours, cool down to below 40°C, and add 8.1 grams of toluene Diisocyanate, 0.1 g of dibutyltin dilaurate, react at 60°C for 2.5 hours, add 0.3 g of p-hydroxyanisole, 0.45 g of antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl ) Octadecyl propionate, 4.1 g of β-hydroxybutyl acrylate, continue to react at 75°C for 2 hours, take a sample and measure the infrared spectrum to confirm that the infrared absorption peak of the isocyanate group disappears, and the material is cooled and discharged to obtain a difunctional polyurethane Acrylate prepolymer [DP2].

[0033] The preparation method of the inert polyurethane prepolymer [IU2] is the same as that of [DP2], except that the amount of toluene diisocyanate added is 11.6 g, 4.1 g of 4-hydroxybutyl acrylate is replaced by 3.1 g of ethanol, and the rest of the added amount is the same....

Embodiment 3

[0036] Add 100 grams of polyester diol with a hydroxyl value of 112 (Qingdao Xinyutian Chemical POL-3112) into the reactor, vacuum dehydrate at a temperature of 115°C for 2 hours, cool down to below 40°C, and add 22.6 grams of toluene Diisocyanate, 0.1 g of dibutyltin dilaurate, react at 60°C for 2.5 hours, add 0.3 g of p-hydroxyanisole, 0.45 g of antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl ) Octadecyl propionate, 8.2 g of β-hydroxypropyl acrylate, continue to react at 75°C for 2 hours, take a sample and measure the infrared spectrum to confirm that the infrared absorption peak of the isocyanate group disappears, and the material is cooled and discharged to obtain a difunctional polyurethane Acrylate prepolymer [DP3].

[0037] The preparation method of the inert polyurethane prepolymer [IU3] is the same as that of [DP3], except that the amount of toluene diisocyanate added is 34.8 g, 8.2 g of hydroxypropyl acrylate is replaced by 39.1 g of lauryl alcohol, and the rest of ...

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Abstract

The invention discloses an ultraviolet curing adhesive for a liquid crystal display television side frame. The ultraviolet curing adhesive consists of the following materials in parts by weight: 20-40 parts of prepared bifunctional polyurethane-acrylate prepolymer, 5-30 parts of self-prepared inert polyurethane prepolymer, 10-30 parts of nitrogen-containing functional monomers, 10-30 parts of single-functionality acrylate monomers, 1-5 parts of bifunctional acrylate monomers, 1-5 parts of a photoinitiator, 1-5 parts of gas-phase method silicon dioxide and 1-4 parts of a silane coupling agent. The invention further provides a preparation method and a using method of the ultraviolet curing adhesive. The curing adhesive, replacing existing silica gel bars or other rubber bars, can be applied in assembling of the liquid crystal display television side frame, so that production efficiency is improved, product quality is improved and cost is lowered.

Description

technical field [0001] The invention relates to an ultraviolet light curing adhesive, in particular to an ultraviolet light curing adhesive used for a frame of a liquid crystal television and a preparation method thereof. Background technique [0002] With the continuous upgrading of image display technology, liquid crystal display technology has now become the mainstream of the market, and LCD TV is a typical terminal product. As the core component of LCD TV, the liquid crystal display module is composed of a liquid crystal panel and a backlight module, and most of the liquid crystal panels are supported by buffer strips on the plastic frame. This kind of buffer strip mainly plays the role of shock absorption and sealing. It is generally made of silica gel or other rubber materials. It is manually attached to the rubber frame through double-sided tape, and finally assembled on the backlight module before assembling the LCD glass and other components. . The disadvantage of...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J175/08C09J11/04C09J11/06C08G18/67C08G18/42C08G18/44C08G18/30
Inventor 崔亨利王建斌陈田安解海华
Owner YANTAI DARBOND TECH
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