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Intelligent temperature control vanadium dioxide composite film with enhanced infrared regulation capacity and preparation method thereof

A technology of vanadium dioxide film and adjustment ability, applied in the field of intelligent temperature control vanadium dioxide composite film and its preparation, can solve the problems of low transmittance of visible light and no improvement of adjustment ability in near-infrared light region, and achieve enhanced infrared adjustment Ability and solar regulation ability, excellent optical switching characteristics, excellent superhydrophobic effect

Inactive Publication Date: 2017-10-24
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese published invention patent CN103042754A discloses a thermal hysteresis discoloration vanadium dioxide-based composite film with adjustable contact angle and its preparation method. The composite film integrates the advantages of thermal hysteresis discoloration coating and self-cleaning coating, and improves VO 2 The visible light transmittance of the film, but the visible light transmittance of the composite film is still very low, only about 40% at low temperature, and the ability to adjust the near-infrared light region has not improved

Method used

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  • Intelligent temperature control vanadium dioxide composite film with enhanced infrared regulation capacity and preparation method thereof
  • Intelligent temperature control vanadium dioxide composite film with enhanced infrared regulation capacity and preparation method thereof
  • Intelligent temperature control vanadium dioxide composite film with enhanced infrared regulation capacity and preparation method thereof

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Embodiment 1

[0035]A method for preparing an intelligent temperature-controlled vanadium dioxide composite thin film with enhanced infrared light adjustment capability, the specific steps are as follows:

[0036] 1) Take 1g of vanadyl acetylacetonate and 30ml of methanol in a beaker, place it on a magnetic stirrer and stir evenly, then add 0.2g of PVP, 0.5ml (11.2mol / L) of hydrochloric acid solution in sequence (at this time the system pH=3), Then continue to stir for 24 hours, let it stand for aging for 48 hours, and obtain a uniform dark blue precursor solution without precipitation;

[0037] 2) Drop the precursor solution obtained in step 1) on the surface of the quartz glass rotating in the homogenizer, spin-coat at a slow speed of 800r / min for 9s, and a high speed of 2500r / min for 30s, and dry it in argon after vacuum drying. Annealing at 650 °C for 1 h in the atmosphere and tubular muffle furnace to obtain VO 2 film;

[0038] 3) Take 1.08g of methyltrimethoxysilane, 0.5ml (0.001mol...

Embodiment 2

[0045] A method for preparing an intelligent temperature-controlled vanadium dioxide composite thin film with enhanced infrared light adjustment capability, the specific steps are as follows:

[0046] 1) Take 1g of vanadyl acetylacetonate and 30ml of methanol in a beaker, place it on a magnetic stirrer and stir evenly, then add 0.4g of PVP and 1ml (11.2mol / L) oxalic acid solution in sequence (at this time, the system pH=2), and continue Stir for 48 hours, stand for aging for 96 hours, and obtain a uniform dark blue precursor solution without precipitation;

[0047] 2) Drop the precursor solution on the surface of the quartz glass rotating in the homogenizer, spin-coat at a slow speed of 800r / min for 9s, and a high speed of 2500r / min for 30s, and dry it in a vacuum. Annealing at 500°C for 3 hours in a muffle furnace yields VO 2 film;

[0048] 3) Take 1.08g of methyltrimethoxysilane, 0.5ml (0.001mol / L) of oxalic acid, and 8.72g of methanol in a 25ml beaker (at this time, the p...

Embodiment 3

[0052] A method for preparing an intelligent temperature-controlled vanadium dioxide composite thin film with enhanced infrared light adjustment capability, the specific steps are as follows:

[0053] 1) Take 1g of vanadyl acetylacetonate and 30ml of methanol in a beaker, put it on a magnetic stirrer and stir evenly, then add 0.4g of PVP, 0.5ml (11.2mol / L) of hydrochloric acid solution in sequence (at this time the system pH=2), Stir continuously for 24 hours, and stand for aging for 48 hours to obtain a uniform dark blue precursor solution without precipitation;

[0054] 2) Drop the precursor solution on the surface of the quartz glass rotating in the homogenizer, spin-coat at a slow speed of 800r / min for 9s, and a high speed of 2500r / min for 30s, and dry it in a vacuum. Anneal at 500℃ for 1.5h in muffle furnace to get VO 2 film;

[0055] 3) Take 0.54g of methyltrimethoxysilane, 0.64g of hexamethyldisilazane, 0.5ml (0.001mol / L) of oxalic acid, and 8.72g of methanol in a 25m...

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Abstract

The invention relates to an intelligent temperature control vanadium dioxide composite film with enhanced infrared regulation capacity. A vanadium dioxide film and a silicon dioxide film are compounded into the composite film; the silicon dioxide film is located on the surface layer; the silicon dioxide film has a nanometer porous structure which is formed by piling the SiO2 particles with hydrophobic groups on the surfaces; the grain size of the SiO2 particles is 10nm-50nm; the vanadium dioxide film is formed by irregular VO2 particle depositions; the grain size of the VO2 grain size is 20nm-150nm. According to the preparation method, the silicon dioxide gel is coated on the vanadium dioxide film surface and is annealed under an inert gas atmosphere. The intelligent temperature control vanadium dioxide composite film provided by the invention can keep excellent optical properties and self-cleaning function and meanwhile can greatly promote the infrared regulation capacity of the composite film.

Description

technical field [0001] The invention relates to the field of thermally induced phase change materials and self-cleaning energy-saving energy materials, in particular to an intelligent temperature-controlled vanadium dioxide composite film with enhanced infrared light adjustment capability and a preparation method thereof. Background technique [0002] With the large-scale application of glass curtain walls, glass roofs, and glass structures in high-rise buildings, the problem of glass cleaning has become more and more prominent. It is not economical and inconvenient to use window cleaning machines to clean glass. Looking for a glass with self-cleaning function It has become a hot spot and a difficult point in research all over the world. Traditional wetting self-cleaning and mechanical self-cleaning are difficult to meet the requirements of realistic cleaning. The ecological direction is the development trend of architectural glass, which is actually the direction of enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34
CPCC03C17/3417C03C2218/113C03C2218/116
Inventor 赵丽王超梁子辉董兵海王世敏
Owner HUBEI UNIV
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