Light valve device, light control particle and preparation method of light control particle

A technology of light valves and particles, applied in optics, nonlinear optics, instruments, etc., can solve the problems of monotonous cold color tone and cannot meet the needs of multiple colors, and achieve the effect of enhanced light transmission

Pending Publication Date: 2021-12-07
ZHEJIANG JINGYI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that in the previous technology, the dark state of the suspended particle light valve is blue, and this monotonous cool color cannot meet people's needs for rich and colorful colors.

Method used

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  • Light valve device, light control particle and preparation method of light control particle
  • Light valve device, light control particle and preparation method of light control particle
  • Light valve device, light control particle and preparation method of light control particle

Examples

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preparation example Construction

[0091] The present invention also provides a method for preparing the above-mentioned solid light-controlling particles, comprising: S1) combining iodine, main group metal iodides, transition metal organic complexes and / or rare earth metal organic complexes, nitrocellulose and organic Mix the solvents, then add low-carbon alcohol, distilled water and nitrogen-containing organic ligands, stir and react to obtain a reaction solution; S2) centrifuge the reaction solution under the condition of not higher than 5000g to obtain a supernatant; S3) The supernatant is centrifuged under the condition of no less than 10000g to obtain solid light-controlling particles.

[0092] Wherein, the present invention does not have special limitation to the source of all raw materials, can be commercially available; Said iodine, main group metal iodide, transition metal organic complex and / or rare earth metal organic complex, nitrocellulose The types and proportions of the nitrogen-containing organ...

Embodiment 1

[0133] Example 1: Preparation of red solid light-controlling particles

[0134] The feeding mass ratio of each raw material is elemental iodine: metal iodide: metal organic complex: nitrogen-containing organic ligand: nitrocellulose is 1:0.5:0.16:0.66:1.

[0135] Add 30 grams of isoamyl acetate solution containing 21.2 wt% nitrocellulose (SS1 / 4S) in a 250 milliliter three-necked round bottom glass flask, 6 grams of I 2 , 70 g isoamyl acetate, 3 g anhydrous CaI 2 , 1 g of ferrocene, and heated to 42 °C. Wait I 2 After dissolution, 6 g of anhydrous methanol and 4 g of 2,5-pyrazinedicarboxylic acid dihydrate were added to a three-necked round-bottomed glass flask. The reaction was heated and stirred at 42° C. for 4 hours, and then cooled naturally.

[0136] The reaction solution was centrifuged at 1350G for 0.5 hour to remove large particulate products. The supernatant was centrifuged at 18000G for 5 hours, and the supernatant was discarded to obtain red solid light-controll...

Embodiment 2

[0139] Example 2: Preparation of gray solid light-controlling particles

[0140] According to the method of embodiment 1, only with 1.0 gram of Co(acac) 2 , instead of 1 g of ferrocene, heated and stirred at 46°C for 2 hours. SEM characterization results show that the gray solid light control particles have a particle length of 328 nm, a particle width of 72 nm, and a particle aspect ratio of 4.5. The resulting suspension of gray solid light control particles is called LCP-2.

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Abstract

Compared with the prior art, the light valve device provided by the invention has the advantages that a main body of solid light control particles adopted by the light valve device is an inorganic-organic complex which is non-blue solid particles, and when an electric field (in a closed state) is not applied, the solid light control particles in suspension medium liquid drops are randomly dispersed due to Brownian motion, at the moment, the light beams entering the light valve are absorbed and / or scattered, the light valve is poor in light transmission and relatively dark, and the dark state is a non-blue tone; when an electric field is applied (in an open state), the solid light control particles are polarized by the electric field, and the morphology and the state of the solid light control particles are changed, so that absorption / scattering and transmission of light by the light valve are influenced, most of light can penetrate through the light valve, the light transmission of the light valve is enhanced, the light valve is relatively bright, and modulation of dark-state primary colors of the light valve device is realized.

Description

technical field [0001] The invention belongs to the technical field of light valves, and in particular relates to a light valve device with a non-blue tone, light control particles and a preparation method thereof. Background technique [0002] A light valve is a device that can adjust the transmittance of light passing through itself. In particular, in the present invention, a light valve refers to a device that can control the transmittance of light by adjusting the voltage applied to it. This device also Known as an electrochromic device. Specifically, a light valve (hereinafter referred to as LV) refers to a device that can control the transmittance of light passing through a medium by adjusting the level of alternating current (AC) voltage applied to the medium. This light valve has the advantages of actively regulating light transmittance and energy saving. This device can be used as smart windows, rearview mirrors, sunglasses, displays, etc. for spacecraft, high-spee...

Claims

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Application Information

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IPC IPC(8): G02F1/155G02F1/1516
CPCG02F1/155G02F1/1516
Inventor 赵世勇李亚男张达玮肖淑勇张昱喆梁斌
Owner ZHEJIANG JINGYI NEW MATERIAL TECH CO LTD
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