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A kind of transparent thermal insulation adhesive for liquid crystal display and preparation method thereof

A liquid crystal display and adhesive technology, applied in the direction of adhesive additives, adhesive types, ester copolymer adhesives, etc., can solve the problem of poor thermal insulation effect, failure to meet the thermal insulation requirements of LCD reinforcement modules, thermal conductivity High efficiency and other problems, to achieve the effect of improving the heating effect, or blocking heat loss, and reducing heating power consumption

Active Publication Date: 2018-01-16
NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing optical composite bonding transparent glue has relatively high thermal conductivity, poor heat preservation effect, and cannot meet the heat insulation requirements of the LCD reinforcement module, and to invent a transparent heat preservation glue for liquid crystal displays. agent, while providing a corresponding preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix 85g of tetraethyl orthosilicate with 15g of absolute ethanol and 30g of distilled water, adjust the pH value to 8.5, mix thoroughly and gel at room temperature, and obtain 130g of silica sol (accounting for 65%) after aging for 12 hours; silica sol Disperse with 30g of indium tin oxide ITO nano-alcohol slurry (infrared opacifying agent, accounting for 15%) at low speed (900rpm) to obtain a uniform composite sol; then add 39g of glass fiber (accounting for 19.5%) and 1g of hydrofluoric acid catalyst (accounting for 0.5%), ultrasonically dispersed for 1 hour and then high-speed grinding (grinding speed 5000rpm) for 2 hours to obtain 200 grams of nano-SiO 2 Airgel slurry; 200 g of nano-SiO 2 Airgel slurry (15%), 1000 g waterborne acrylate (mixture of 40 parts n-butyl acrylate, 8 parts vinyl acetate and 1 part acrylate-β-hydroxyester) (75 %, 67 g toluene with The mixed solution dispersant of xylene (accounting for 5%), 26.7 grams of benzoyl peroxide initiator (accounti...

Embodiment 2

[0024] Mix 165g of tetraethyl orthosilicate with 25g of absolute ethanol and 50g of distilled water, adjust the pH value to 9.5, fully mix and gel at room temperature, and obtain 240 grams of prepared silica sol after aging for 24 hours; mix silica sol with 30gITO and TiO 2 The nano-composite alcohol slurry is dispersed at a low speed (1800rpm) to obtain a uniform composite sol; then add 22.5g of aluminum silicate fiber (accounting for 11.25%) and hydrofluoric acid catalyst 7.5g (accounting for 2.5%), and ultrasonically disperse for 1.2h After high-speed grinding (grinding speed is 9000rpm) dispersion for 3h, 300g of nano-SiO 2 Airgel slurry; 300 g of nano-SiO 2 Airgel slurry (25%), 792 grams of water-based acrylate (mixture of 30 parts 2-ethylhexyl acrylate, 12 parts vinyl acetate, 1 part acrylic acid, and 2 parts β-hydroxy acrylate) ( Accounting for 66%), 36 grams of ethyl acetate and toluene mixed solution dispersant (accounting for 3%), 60 grams of azobisisobutyronitrile...

Embodiment 3

[0026] Mix 90g of tetraethyl orthosilicate with 15g of absolute ethanol and 35g of distilled water, adjust the pH value to 8.5, mix thoroughly and gel at room temperature, and obtain 140g of silica sol (accounting for 70%) after aging for 12 hours; silica sol Disperse with 23g of indium tin oxide ITO nano-alcohol slurry (infrared opacifier) ​​at a low speed (900rpm) to obtain a uniform composite sol; add 35g of glass fiber and 2g of hydrofluoric acid catalyst, ultrasonically disperse for 1 hour and then grind at high speed (grinding The speed is 5000rpm) to disperse for 2h to produce 200g of nano-SiO 2 Airgel slurry; 200 g of nano-SiO 2 Airgel slurry (20%), 700 g water-based acrylate (a mixture of 40 parts n-butyl acrylate, 8 parts vinyl acetate and 1 part acrylate-β-hydroxyester) (70%, 35 g toluene with The mixed solution dispersant of xylene (accounting for 3.5%), 10 grams of benzoyl peroxide initiator (accounting for 1%) and 10 grams of dioctyl phthalate plasticizer (accou...

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Abstract

A transparent heat-insulating adhesive for liquid crystal displays and a preparation method thereof, wherein the heat-insulating adhesive includes components such as nano-SiO2 airgel slurry, water-based acrylate resin, dispersant, initiator and other fillers, and is characterized in that The nano-SiO2 airgel slurry mainly includes the following components in mass fraction: 65%~80% tetraethyl orthosilicate silica sol, 10%~15% infrared sunscreen agent, 7.5%~19.5% reinforcing fiber; The thickness of the transparent thermal insulation adhesive layer described above is 0.3~0.8mm, and the mass fraction of each component of the adhesive is: 15%~25% of nano-SiO2 airgel slurry, 60%~75% of water-based acrylic resin, dispersed 2%~5% of the additive, 1%~5% of the initiator, and 1%~3% of other fillers; the invention realizes the four-in-one performance of heat preservation, transparency, adhesiveness and high elasticity of the optical adhesive without changing the original Advanced LCD reinforcement module structure, without adding redundant process steps, while active heating is supplemented by passive adhesive heat insulation design, reducing or blocking heat loss, improving heating effect in low temperature environment, and reducing heating power consumption .

Description

technical field [0001] The invention relates to a liquid crystal display technology, in particular to a material technology for improving the performance of a liquid crystal display, in particular to a transparent thermal insulation adhesive for a liquid crystal display and a preparation method thereof. Background technique [0002] Thin Film Transistor Liquid Crystal Display (TFT-LCD) is the preferred display method for military displays. The special reinforced design can work normally and reliably in extreme environments, which requires the LCD to have a wide operating temperature range (-55°C~+71°C). The temperature range used by general liquid crystal display devices is relatively narrow, and it is temperature sensitive. When the temperature is too high, the liquid crystal state turns into a liquid state and cannot be displayed. Therefore, one of the main tasks of LCD reinforcement is to heat the LCD screen in a low-temperature environment to expand its operating temper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C09J11/04C09J11/06C09J11/08
CPCC08K3/36C08K5/12C08K7/14C08K13/04C08L2201/10C09J11/04C09J11/06C09J11/08C09J133/08C08L29/04C08K7/08C08K2003/2241C08K2003/2231
Inventor 王璐王绪丰樊卫华杨斌吴金华李忠良张小芸
Owner NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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