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Vanadium dioxide-based fluorescent composite material and application thereof

A technology based on vanadium dioxide and fluorescent materials, which is applied in the direction of color-changing fluorescent materials, luminescent materials, chemical instruments and methods, etc., can solve the problems of high vacuum evaporation cost, weak film binding force, and difficulty in industrial production, and achieve ultraviolet The protective effect is obvious, the fluorescent color complementary effect is obvious, and the effect of easy mass production

Active Publication Date: 2019-02-15
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the main inventor of the above-mentioned technology, he also noticed that the above-mentioned vanadium dioxide temperature-controlled intelligent energy-saving window still has the following deficiencies: (1) It has a relatively high adjustment range for the solar infrared band, but it accounts for 50% of the total solar energy. The visible light band has almost no adjustment effect, which reduces the total insolation adjustment rate; (2) Since there is no obvious adjustment effect in the visible light band, this adjustment cannot be used to produce sufficient visual changes, which is not helpful for customers. Demonstration of powerful adjustment effect has a decisive adverse effect on product publicity and promotion; (3) It has a strong absorption effect on short-wavelength visible light, resulting in yellow coloration of the film
The quantum dot layer is prepared by electrostatic adsorption, and the vanadium dioxide layer is prepared by vacuum evaporation. The film layer prepared by electrostatic adsorption has weak bonding force, high cost of vacuum evaporation, and difficult industrial production.
Moreover, the quantum dots used in it absorb blue light and emit visible light of other colors, which will also have a certain adverse effect on the screen viewing effect.

Method used

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  • Vanadium dioxide-based fluorescent composite material and application thereof
  • Vanadium dioxide-based fluorescent composite material and application thereof
  • Vanadium dioxide-based fluorescent composite material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Weigh 0.1g of vanadium dioxide particles and ultrasonically disperse them in 2g of ethanol to form a 5wt% dispersion, then add 4g of silicone resin to it, form a uniform slurry by magnetic stirring, and apply it on the substrate by scraping (glass, etc.), put it at room temperature for 2 hours until it solidifies (it can also be heated in an oven to accelerate its curing), and a vanadium dioxide-based thermochromic film is obtained with a thickness of 80 μm and a yellow color.

[0061] Dissolve OB fluorescent whitening agent in toluene to form a 5wt% solution, take 2g of the dispersion and add 2.5g of polycrystalline resin and 1g of silicone resin to it, stir magnetically to form a uniform slurry, and scrape it onto the pre- On the prepared vanadium dioxide-based thermochromic film, after being cured, the film (with a total thickness of 200 μm) can emit blue light under sunlight irradiation.

Embodiment 2

[0063] According to the mass ratio, vanadium dioxide particles: quantum dots CdSe@ZnS=1:1 are added in the ball mill, and toluene is used as a solvent to be equipped with a suitable dispersant to obtain a mixed dispersion of vanadium dioxide particles and photosensitive powder, and its concentration is 5wt %, then take 2g of the dispersion and add 4g of silicone resin to it, form a uniform slurry by magnetic stirring, apply it on the substrate by scraping, and wait for it to solidify to obtain a vanadium dioxide base with a thickness of 120μm. Fluorescent composite film.

Embodiment 3

[0065] Prepare a vanadium dioxide-based thermochromic film according to Example 1, with a thickness of 80 μm;

[0066] The quantum dot powder CdSe@ZnS is formed into a 5wt% dispersion by ball milling with toluene as a solvent. Take 0.5, 1, 3, and 4 g of the dispersion respectively, and add 2.5 g of polycrystalline resin and 1 g of silicone resin to it, and magnetically stir to form uniform slurry, and scrape-coat it on the pre-prepared vanadium dioxide-based thermochromic film to obtain a film with adjustable luminous brightness (the total thickness is 200 μm).

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Abstract

The invention relates to a vanadium dioxide-based fluorescent composite material and application thereof. The vanadium dioxide-based fluorescent composite material comprises a vanadium dioxide-based thermochromic material and a fluorescent material for absorbing ultraviolet emission blue light, and the mass ratio of the vanadium dioxide-based thermochromic material to the fluorescence material forabsorbing ultraviolet emission blue light is 1:(0.1-10), preferably 2:1 to 1:2.

Description

technical field [0001] The invention relates to a vanadium dioxide-based fluorescent composite material and its application, in particular to the film light transmittance and color of a vanadium dioxide-based thermochromic material, and belongs to the technical field of film light transmittance and color adjustment. Background technique [0002] The problem of global energy shortage is becoming more and more serious, and excessive carbon emissions are causing the environment to deteriorate day by day. Energy conservation and emission reduction have become the top priority of all countries. It is estimated that building energy consumption accounts for more than 1 / 3 of the total energy consumption in society. Therefore, promoting building energy conservation is one of the key measures for energy conservation, emission reduction and sustainable development. A large part of building energy consumption is used for air conditioning, and glass windows, as the main channel for heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K9/00C09K11/88C09K11/62C09K11/56C09K11/68C09K11/70C09K11/74C08L83/04C08K3/22C08K3/30C08J5/18C08J7/04
CPCC08J5/18C08J2383/04C08J2483/04C08K3/22C08K3/30C08K2003/3009C09K9/00C09K11/02C09K11/025C09K11/0883C09K11/565C09K11/62C09K11/70C09K11/7492C09K11/883C08J7/0427
Inventor 纪士东赵书文金平实黄爱彬周奕杰
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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