Preparation method of ultraviolet cured adhesive for flat panel display

A flat-panel display device and ultraviolet light technology, applied in the direction of adhesives, epoxy resin glue, adhesive types, etc., can solve the problems of UV glue high temperature resistance, high humidity resistance and low temperature resistance, liquid crystal filling port pollution, etc., to achieve Excellent resistance to high humidity and guaranteed long life

Inactive Publication Date: 2006-06-21
XIAN RUILIAN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The invention provides a preparation method of ultraviolet curable glue, which overcomes the unsuitability of automatic assembly line operation in the existing process, and solves the problems of the existing UV glue in high temperature resistance, high humidity resistance, and low temperature resistance, and the adhesive component The problem of pollution to the liquid crystal pouring port can be widely used in flat panel displays - especially the packaging of OLED displays, liquid crystal display (LCD) liquid crystal pouring port sealing and pin bonding, and OLED display packaging and other processes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of main glue: synthesis of bisphenol A epoxy acrylate prepolymer (Y1)

[0029] Add 1800 grams of E-51 epoxy resin to a 3L three-necked flask with a decompression device, heat up to 120°C, vacuumize to remove a small amount of solvent and moisture remaining in the resin, and then add 2.8 grams of tetrabutyl bromide After the ammonium (catalyst) was stirred and dissolved, 433 g of polyether type bisphenol A (2,2-bis(4-hydroxyphenyl) propane) was added in batches at 100-110° C., and then kept for 1.5 hours for reaction. Add 5 grams of hydroquinone (stabilizer), slowly dropwise add 394 grams of methacrylic acid, keep the temperature for reaction for 5 hours after the dropwise addition, until the acid value is qualified through detection. The method for judging the qualified acid value is as follows: take 0.5-1.0 g of a sample, dissolve it in a conical flask with about 30 ml of methanol:toluene=1:1 mixed solution, add 3 drops of ethanol solution of phenolphth...

Embodiment 2

[0035] (1) Preparation of main glue: synthesis of bisphenol A epoxy acrylate prepolymer (Y2)

[0036] Add 2500 grams of E-44 epoxy resin to a 3L three-necked flask with a decompression device, heat up to 120°C, vacuumize to remove a small amount of solvent and water remaining in the resin, and then add 2.8 grams of tetrabutyl bromide Ammonium (catalyst), after stirring and dissolving, add 433 grams of polyether type bisphenol A in batches at 100-110° C., and then keep warm for 1.5 hours. After adding a small amount of catalyzer and hydroquinone (stabilizer), slowly dropwise add 394 grams of acrylic acid, and after the dropwise addition, keep warm for 5 hours until the acid value is qualified. Evacuate under reduced pressure to evaporate unreacted residual small molecules, cool down and filter the material, and store in the dark.

[0037] (2) Preparation of reinforcing glue: synthesis of polyether epoxy acrylate prepolymer (Y3)

[0038] Add 2100 grams of 663 epoxy resin (epox...

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PUM

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Abstract

The invention relates the method for preparation of ultra-violet light curing adhesive, which is made by main body rubber, reinforced rubber, deflocculating agent, organosilicon coupling agent, stabilizing agent and photo-initiation agent. The ultra-violet light curing adhesive comprises following characteristics: 1 not needing mix; 2 rapid curing at indoor temperature, and controlling the curing speed; 3 suiting for supermatic flow operation; 4 excellent moisture-proof, low and high temperature impact property resistance, and long life; 5 100% solid coating, no environmental contamination. The UV curing adhesive possesses the advantages of short curing adhesive, strong adhesive force, heat resistance and moisture-proof, so it is used in LCD rim.

Description

technical field [0001] The invention relates to a method for preparing an adhesive, in particular to a method for preparing an ultraviolet curable adhesive applied to flat panel display devices (OLED and LCD displays). Background technique [0002] Traditional adhesives often cure adhesives containing one or more solvents by heating or adding a curing agent. UV-curable adhesives are generally composed of photocurable prepolymers (25-90wt%), monomers (15-60%), photoinitiators (1-3%) and other additives, and sometimes sensitizers are used to coordinate photoinitiation. agent to improve curing efficiency. The adhesive cures quickly and simply under exposure to a UV light source. [0003] At present, the epoxy resin curing glue that adopts the method of ionic polymerization curing is widely used in China. This kind of curing glue is easy to cause the pollution of the display seal, and the curing time is long (24 hours at room temperature, and 4 hours at 80°C). Hours or so). P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/02
Inventor 张玉祥李娜邓登刘骞峰高仁孝
Owner XIAN RUILIAN NEW MATERIAL CO LTD
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