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A kind of organic-inorganic electric polarization particle and its preparation method and application

An electro-polarized and inorganic technology, applied in instruments, optics, nonlinear optics, etc., can solve the problems of unsatisfactory minimum transmittance, complex processing technology, and limited application scenarios of smart glass technology, and achieve a wide range of color adjustment. , Simple preparation, wide color change effect

Active Publication Date: 2021-10-26
SHAOXING DIFEI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The minimum transmittance of PDLC smart glass technology is not ideal, the maximum / minimum transmittance ratio is small, and the application scenarios are limited
Although conductive polymer electrochromic technology can solve the problem of the minimum transmittance of PDLC, its processing technology is complicated, its discoloration speed is slow, its life is short, and its cost is high. use on
In addition, the traditional color-changing device has a single color-changing

Method used

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  • A kind of organic-inorganic electric polarization particle and its preparation method and application
  • A kind of organic-inorganic electric polarization particle and its preparation method and application
  • A kind of organic-inorganic electric polarization particle and its preparation method and application

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preparation example Construction

[0062] The preparation method of the titanium oxide nanorod solution includes: adding 2.4 g of titanium sulfate and 6.7 g of citric acid into 14 mL of deionized water, and ultrasonically dispersing and dissolving. Add 8 mL of ethylenediamine, stir for 1 hour, transfer to a 50 mL hydrothermal reaction kettle, and react at 200° C. for 6 h. The resulting precipitate was washed three more times with deionized water to yield about 1.1 g of wet titanium oxide product. Take 500 mg of it and add 100 mL of ethylene glycol methyl ether, remove part of the water and then ultrasonically disperse for 3 hours. Its concentration was determined to be 3.0 mg / mL by heating method.

[0063] The homemade method of polyoctyl methacrylate (Mn=4300) is: add 15.2g butyl methacrylate and 10.5g acryloxypropyltrimethoxysilane to 125mL ethyl acetate, add 175mg AIBN, remove oxygen, The temperature was raised to 75°C for 4h. Cool down to 60° C. and add 0.5 g of triethylene glycol dimethacrylate to carry...

Embodiment 1

[0066] 1) Prepare dye molecule A according to literature [ACS Appl.Mater.Interfaces 2013,5,7086]: add 2.6g of indigo raw material (CAS: 482-89-3; Tokyo Chemical Co., Ltd.) into a 100mL single-necked round bottom flask, Add 4.1 g of ethyl 2-chloromethacrylate (Alpha Aesar Chemical Co., Ltd., 98%), 2.5 g of potassium carbonate (analytical grade) and 50 mL of N,N-dimethylformamide to dissolve it. Subsequently, the temperature of the reaction solution was raised to 110° C., and nitrogen gas was passed for 15 minutes. After 12 hours of reaction, the temperature was lowered, and 100 mL of deionized water was added to precipitate a blue blocky solid. Then the blue solid was collected, 120 mL of dichloromethane was added, stirred for 30 minutes, and the insoluble matter was removed. The crude product was recrystallized in a mixed solvent of petroleum ether:dichloromethane=2:1 to obtain 2.0 g of solid powder dye molecule A with a yield of 76%.

[0067]

[0068] 2) if figure 2 As...

Embodiment 2

[0073] 1) Preparation of organic-inorganic electrically polarized particles: Add dye molecule A (75.0mg), hydroxypropyl acrylate (178.0 mg), ventilated for 15 minutes. Add AIBN2.3mg (dissolved in 1mL tetrahydrofuran), and react at 75°C for 4h. Continue to heat up to 85 degrees, after 1h of reaction. The reaction solution was concentrated to 10 mL, poured into 100 mL of n-hexane, and a dark blue powder solid was precipitated, washed twice with n-hexane and then once with ethanol, and the obtained solid was blown dry with nitrogen for later use.

[0074] 2) Disperse about 100 mg of the blue solid powder from the previous step in ethyl acetate (15 mL), add 270 mg of polyoctyl methacrylate (Mn=4300, self-made), stir at high speed for 2 hours, and remove the ethyl acetate in vacuo to obtain a blue color slurry. Mix the above blue slurry with 1.7mL cross-linkable polystyrene solution (dichloromethane solution, concentration 200mg / mL, Mn=4400, self-made), add photoinitiator 907 (1...

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Abstract

The invention discloses an organic-inorganic electrode polarized particle, its preparation method and its application in an electrode polarichromic device, comprising the following steps: 1) preparing titanium oxide nanorods; 2) utilizing dye molecules with polymerizable groups Polymerization grafting onto the surface of titania nanorods yields organic-inorganic electrically polarized particles. Specifically, the invention utilizes the surface polymerization reaction of titanium oxide nanorods to graft dye molecules of different colors to realize multi-color organic-inorganic polarized particles and polarized color-changing devices. The organic-inorganic electrode polarized particles of the present invention have the characteristics of simple operation, wide color adjustable range, simple preparation, and easy large-scale preparation; the electrode polarized color-changing device prepared by using it has the advantages of fast response speed and wide color changing range.

Description

technical field [0001] The invention relates to the technical field of electropolarized color-changing devices, in particular to an organic-inorganic electric polarized particle, a preparation method thereof and an application in an electropolarized color-changing device. Background technique [0002] Electrochromic windows are widely used in construction, home furnishing, automobiles and other fields because they can provide many functions such as heat insulation, temperature control, energy saving, and privacy, and have high social and commercial significance. Smart dimming film technology has been developed for a long time and is extremely challenging. At present, there are two types of smart glass based on electrochromic technology on the market: smart glass technology based on polymer dispersed liquid crystal color (PDLC) and smart glass technology based on conductive polymer electrochromic (EC). Polymer dispersed liquid crystal technology is to disperse liquid crystal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00C08F220/36C08F220/20C08F222/22C08F220/32C08F220/14G02F1/1516G02F1/1524
CPCC08F292/00G02F1/15165G02F1/1524C08F220/36C08F220/20C08F222/22C08F220/32C08F220/14
Inventor 胡志诚罗威王鹏飞
Owner SHAOXING DIFEI NEW MATERIAL CO LTD
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