Preparation method for high-conductivity liquid crystal light-adjusting film

A liquid crystal dimming film, high conductivity technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of poor conductivity of liquid crystal dimming film, high driving voltage of dimming film, poor light transmission performance, etc. The visible light transmittance is increased, the grain boundary scattering is reduced, and the application prospect is broad.

Active Publication Date: 2018-06-01
南京优写智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention is aimed at the relatively high driving voltage of the dimming film due to the high resistivity of conductive electrodes such as indium tin oxide, relatively large energy consumption, poor electrical conductivity and light transmission performance of the liquid crystal dimming film. Bad defect, a preparation method of highly conductive liquid crystal dimming film is provided

Method used

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  • Preparation method for high-conductivity liquid crystal light-adjusting film

Examples

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example 1

[0027]Dissolve 10g of zinc acetate dihydrate in a beaker containing 180mL of isopropanol, place the beaker in a water bath, heat up to 70°C, add 30mL of diethanolamine to the beaker, and use a magnetic stirrer at a speed of 300r / min Heat and stir for 30 minutes, continue to add 15g of aluminum nitrate nonahydrate to the beaker, heat and stir until the solid is completely dissolved, and obtain a transparent homogeneous sol; take 100mL of DMF and add it to the beaker, move the beaker into a water bath with a magnetic stirrer, and control the temperature of the water bath to 35°C, start the magnetic stirrer, stir at a speed of 500r / min, add 5g of 4,4'-diaminodiphenyl ether into the beaker, stir for 10min, then add 6g of pyromellitic anhydride, stir for 3h to obtain poly Amic acid sol; in parts by weight, 10 parts of stannous sulfate, 20 parts of ethylenediaminetetraacetic acid and 6 parts of potassium hydroxide are added in a beaker with 80 parts of deionized water, and stirred fo...

example 2

[0029] Dissolve 11g of zinc acetate dihydrate in a beaker containing 190mL of isopropanol, place the beaker in a water bath, heat up to 75°C, add 35mL of diethanolamine to the beaker, and use a magnetic stirrer at a speed of 325r / min Heat and stir for 33 minutes, continue to add 16g of aluminum nitrate nonahydrate to the beaker, heat and stir until the solid is completely dissolved, and obtain a transparent homogeneous sol; take 110mL of DMF and add it to the beaker, move the beaker into a water bath with a magnetic stirrer, and control the temperature of the water bath At 36°C, start the magnetic stirrer, stir at a speed of 525r / min, add 6g of 4,4'-diaminodiphenyl ether into the beaker, stir for 13min, then add 7g of pyromellitic anhydride, stir for 3.5h, and get Polyamic acid sol; in parts by weight, 11 parts of stannous sulfate, 23 parts of ethylenediaminetetraacetic acid and 8 parts of potassium hydroxide are added in a beaker with 85 parts of deionized water, and stirred f...

example 3

[0031] Dissolve 12g of zinc acetate dihydrate in a beaker containing 200mL of isopropanol, place the beaker in a water bath, heat up to 80°C, add 40mL of diethanolamine to the beaker, and use a magnetic stirrer at a speed of 350r / min Heat and stir for 35 minutes, continue to add 18g of aluminum nitrate nonahydrate to the beaker, heat and stir until the solid is completely dissolved, and obtain a transparent homogeneous sol; take 120mL of DMF and add it to the beaker, move the beaker into a water bath with a magnetic stirrer, and control the temperature of the water bath At 40°C, start the magnetic stirrer, stir at a speed of 550r / min, add 7g of 4,4'-diaminodiphenyl ether into the beaker, stir for 15min, then add 8g of pyromellitic anhydride, stir for 4h to obtain poly Amic acid sol; In parts by weight, 12 parts of stannous sulfate, 25 parts of ethylenediaminetetraacetic acid and 10 parts of potassium hydroxide are added in the beaker that 90 parts of deionized water are housed,...

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Abstract

The invention relates to the technical field of the optical material preparation and in particular to a preparation method for a high-conductivity liquid crystal light-adjusting film. The method comprises the following steps: dissolving octan zinecnaty in isopropyl alcohol and adding diethanol amine and aluminum nitrate nonahydrate, to obtain transparent homogeneous sol; mixing stannous mono-sulphate, edetic acid and potassium hydroxide and dissolving in deionized water, to obtain complexing stannous mono-sulphate solution; adding polyvinylpyrrolidone powder and oxidation solution added with indium hydroxide to the complexing stannous mono-sulphate solution, to obtain reaction solution; adding indium tin oxide powder to the transparent homogeneous sol, to obtain transparent conductive solsolution, and to obtain a conductive liquid crystal film finally; bonding two sheets of the conductive liquid crystal films by coating with polyamide acid sol, to obtain transparent conductive film glass. In the method, the polyvinylpyrrolidone powder is dissolved in the complexing stannous mono-sulphate solution, the dissolving capacity of multiple types of organic molecules in the transparent homogeneous sol is enhanced, so the light transmission and the conductive performance of the transparent conductive film glass are improved, and the application prospect is extensive.

Description

technical field [0001] The invention relates to the technical field of optical material preparation, in particular to a preparation method of a highly conductive liquid crystal dimming film. Background technique [0002] Liquid crystal dimming film is a new type of electronic light control product, which means that polymer dispersed liquid crystal is solidified between two transparent conductive films. In the absence of an electric field, the dimming film is in an opaque state. When AC is applied, the liquid crystal molecules in the dimming film will deflect, and the film will become transparent to achieve dimming performance. Liquid crystal dimming film is widely used, and can be used wherever there is glass. It is usually used in building exterior walls, real estate decoration, automobile glass, automobile rearview mirrors, projection curtain walls, office spaces, public entertainment facilities, etc., with privacy protection , space permeability, security defense and lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/137C08J5/18C08L79/08C08L39/06C08K3/22
CPCC08J5/18C08J2379/08C08J2439/06C08K3/22G02F1/137
Inventor 梅庆波何伟仁张建初
Owner 南京优写智能科技有限公司
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