Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of vanadium dioxide based multifunctional composite film

A technology of vanadium dioxide and composite film, applied in coating, surface pretreatment, device for coating liquid on surface, etc., can solve problems such as difficulty in process and film quality control, and achieve increased applicability and optimized optical performance , the effect of simple process

Active Publication Date: 2014-09-24
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
View PDF13 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of chemical vapor deposition can avoid the reaction between oxides to a certain extent. It has also been reported in the literature that a thermochromic composite film of vanadium dioxide with photocatalytic self-cleaning effect has been successfully prepared, but it is difficult to control the process and film quality. Many difficulties remain (M.E.A. Warwick, C.W. Dunnill, J. Goodall, J.A. Darr and R. Binions, Thin Solid Films 2011, 519, 5942-5948)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of vanadium dioxide based multifunctional composite film
  • Preparation method of vanadium dioxide based multifunctional composite film
  • Preparation method of vanadium dioxide based multifunctional composite film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034]The invention provides a convenient and effective preparation method for a single-layer vanadium dioxide-based composite membrane with a self-cleaning effect, which can obtain a high-quality single-layer vanadium dioxide-based composite membrane with a self-cleaning effect. The invention discloses an intelligent dimming multifunctional composite film based on a vanadium dioxide material and a preparation method thereof. In the present invention, by compounding other materials with photocatalytic properties and vanadium dioxide materials, the obtained single-layer composite film has thermal dimming performance and self-cleaning effect, which greatly increases the vanadium dioxide smart film. applicability. The preparation method disclosed by the invention has simple process and strong controllability, and can be widely used in the preparation of vanadium dioxide smart films on inorganic or high-temperature-resistant organic substrates, and at the same time, components can...

Embodiment 1

[0054] Example 1 Silane coupling agent modified vanadium dioxide-zinc oxide composite film

[0055] Take zinc acetate and ethanolamine at a molar ratio of 1:1, add them to ethylene glycol methyl ether, adjust the concentration to 0.35M, and age for more than 3 days;

[0056] Add 0.1g of vanadium dioxide nanopowder into 20ml of zinc oxide sol, ultrasonically and magnetically stir for 30 minutes, then add silane coupling agent KH550, the mass ratio of coupling agent to vanadium dioxide is 0.1:1, after adding the coupling agent, use sand Grind for 12 hours to obtain a uniformly dispersed composite film sol;

[0057] The composite sol was applied on the homogenizer at a speed of 800rad / min for 30s, and the obtained composite film was dried in an oven at 80°C for one day;

[0058] The dried composite film is heated up to 500°C at 10°C / min in a tube furnace under a nitrogen atmosphere, kept for 30 minutes and then cooled naturally;

[0059] The obtained composite film has a visibl...

Embodiment 2

[0060] Example 2 Titanate Modified Vanadium Dioxide-Titanium Dioxide Composite Membrane

[0061] Take tetrabutyl titanate: 24ml, concentrated hydrochloric acid: 0.920ml, water: 0.590ml, add in 150ml dehydrated alcohol successively, after mixing well, obtain titanium dioxide sol (such as figure 1 (shown on the left side); take 20ml, add 0.2g vanadium dioxide nanopowder, and ultrasonically stir at 60°C for more than 3 days to obtain a uniformly dispersed composite sol (such as figure 1 shown on the right);

[0062] The composite sol adopts the pulling method, and the film is pulled at a pulling speed of 10mm / min. The obtained sample was dried in an oven at 80°C for one day after wiping off the film on one side with absolute ethanol (such as figure 2 shown);

[0063] The dried composite membrane was heated up to 300°C at 10°C / min in a nitrogen atmosphere in a tube furnace, and kept for one day to obtain a composite membrane with self-cleaning effect. from Figure 5 It can b...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
contact angleaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of a vanadium dioxide based multifunctional composite film. The composite film is a single-layer structure, and comprises vanadium dioxide and other oxides with photocatalytic property. The method comprises the steps of: 1) dispersing a vanadium dioxide nano powder into an oxide sol capable of generating the other oxides to obtain a composite sol; 2) forming composite prepared in the step 1) into a film, so as to obtain a composite film precursor; and 3) carrying out heat treatment on the precursor film obtained in the step 2) to obtain the vanadium dioxide based multifunctional composite film.

Description

technical field [0001] The invention belongs to the field of chemical functional materials, in particular to a single-layer vanadium dioxide-based composite membrane with self-cleaning effect and a preparation method thereof. Background technique [0002] Windows are the main way for man-made spaces such as buildings and automobiles to exchange heat with the outside world, which leads to heat transfer and increases the energy consumption of space temperature maintenance. According to relevant statistics, the energy consumed for maintaining the space temperature accounts for about 10% of the total social energy consumption. Therefore, adjusting the heat transfer speed and direction of the window has a great contribution to social energy saving. Vanadium dioxide is a thermochromic material, which has a metal-semiconductor phase transition. Using this feature, the film material can selectively block the infrared light of sunlight before and after the phase transition, thereby ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/23C04B41/85B05D7/14B05D3/00
Inventor 高彦峰陈长罗宏杰
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com