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Thermochromatic vanadium dioxide-based composite film with adjustable contact angles and preparation method thereof

A technology of vanadium dioxide and composite film, which is applied in chemical instruments and methods, lamination, lamination devices, etc., can solve the problems that do not involve the hydrophobicity of the film, the incompatibility of preparation conditions, the limitation of applicability, etc., and achieves a simple structure. , the effect of reducing the degree of refractive index adaptation and reducing the reflectivity

Inactive Publication Date: 2013-04-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the limitation of the above two patent disclosures is that some compounds are not compatible or react with the preparation conditions of vanadium oxide, so the applicability is limited; at the same time, the above two disclosures do not involve the problem of film hydrophobicity

Method used

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  • Thermochromatic vanadium dioxide-based composite film with adjustable contact angles and preparation method thereof
  • Thermochromatic vanadium dioxide-based composite film with adjustable contact angles and preparation method thereof
  • Thermochromatic vanadium dioxide-based composite film with adjustable contact angles and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Preparation steps: (1) Deposit vanadium dioxide film on a transparent substrate: deposit vanadium dioxide (VO 2 )film.

[0025] (2) Zinc oxide nanoarrays were prepared by chemical bath method; the quartz substrate deposited with a 110 nm thick vanadium dioxide film was completely immersed in 0.05 mol?L -1 Zinc acetate Zn(CH 3 COO) 2 with 0.05 mol?L -1 Herotropine C 6 h 12 N 4 Among the mixed solution, put the solution at 80 o C under reflux for 6 hours. After the reaction was completed, the samples were taken out, and washed twice with water and ethanol respectively.

[0026] Product structure: The composite film obtained by the above preparation steps includes a vanadium dioxide film on a transparent substrate and a flaky zinc hydroxide (Zn(OH) 2) nano-array; the sheet-shaped zinc hydroxide nano-array is composed of sheet-shaped zinc hydroxide nanoparticles with a size of 300-700 nm and a thickness of 10-30 nm. The sheet-shaped zinc hydroxide is basically pe...

Embodiment 2

[0033] Preparation method: (1) Deposit vanadium dioxide film on transparent substrate: deposit 50 nm thick vanadium dioxide (VO2) on aluminum oxide (sapphire) transparent substrate 1.95 )film.

[0034] (2) Zinc oxide nanoarrays were prepared by chemical bath method; the quartz substrate deposited with a 50 nm thick vanadium dioxide film was completely immersed in 0.1 mol?L -1 Zinc oxalate ZnC 2 o 4 .2H 2 O and 0.1 mol?L -1 Herotropine C 6 h 12 N 4 Among the mixed solutions, the solution is at 60 o C under reflux for 5 hours. After the reaction was completed, the samples were taken out, and washed twice with water and ethanol respectively. After drying, a thermochromic vanadium dioxide-based composite film with adjustable contact angle can be obtained.

[0035] The composite thin film obtained by the above method includes a vanadium dioxide film on a transparent substrate and a rod-shaped zinc oxide (ZnO) nano-array on the vanadium dioxide film; the rod-shaped zinc ...

Embodiment 3

[0041] Preparation method: (1) Deposit vanadium dioxide film on a transparent substrate: deposit tungsten-doped vanadium dioxide (V 0.98 W 0.02 o 2 )film.

[0042] (2) Zinc oxide nanoarrays were prepared by chemical bath method; the sapphire substrate deposited with a 150 nm thick vanadium dioxide film was completely immersed in 0.1 mol?L -1 Aluminum nitrate Zn(NO 3 ) 2 ·6H 2 O and 0.1 mol?L -1 Herotropine C 6 h 12 N 4 Among the mixed solution, put the solution at 40 o C under reflux for 12 hours. After the reaction was completed, the samples were taken out, and washed twice with water and ethanol respectively. After drying, a thermochromic vanadium dioxide-based composite film with adjustable contact angle can be obtained.

[0043] The composite film obtained by the above method includes a vanadium dioxide film on a transparent substrate and an acicular sheet-like zinc oxide (ZnO) nanoarray on the vanadium dioxide film; the acicular ZnO nanoarray consists of a l...

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Abstract

The invention discloses a thermochromatic vanadium dioxide-based composite film with adjustable contact angles and a preparation method thereof, aiming at achieving the purpose of simple structure and easiness in implementation of preparation process; the composite film provided by the invention comprises a transparent substrate and a composite film; the composite film comprises a vanadium dioxide film positioned on the transparent substrate and an oxide or hydroxide nano array positioned on the vanadium dioxide film; the chemical component of the vanadium dioxide film is VO2-x, wherein x is more than -0.3 and less than 0.6; the oxide or hydroxide nano array is composed of one or more of sheet, rodlike, needle-like and strip-shaped oxide or hydroxide nano particles; the sharp angle between the sheet, rodlike, needle-like and strip-shaped oxide or hydroxide nano particle and the plane of the vanadium dioxide film is more than 35 degrees; the preparation method of the composite film provided by the invention comprises the steps of: firstly depositing the vanadium dioxide film 10-500 nanometers thick on the transparent substrate, and then preparing the zinc oxide nano array by the chemical bath method.

Description

technical field [0001] The invention belongs to the field of inorganic functional materials, and in particular relates to a thermochromic vanadium dioxide-based composite film with adjustable contact angle, a preparation method and application thereof. Background technique [0002] With the development of the economy, my country's energy consumption is also increasing year by year, and building energy consumption accounts for about 30% of the total energy consumption. An important reason for building energy consumption is the heat exchange caused by the thermal insulation of glass: Ordinary glass does not have the ability to regulate the transmission of light. In summer, a large amount of near-infrared sunlight passes through, which increases the cooling load of the air conditioner. In winter, the indoor heat The heat is lost through the glass surface in the form of heat radiation, causing an increase in heating costs. Among all energy-saving glass technologies, thermochrom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/04B32B33/00B32B37/15
Inventor 康利涛梁伟高峰吴尧鹏
Owner TAIYUAN UNIV OF TECH
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