Unlock instant, AI-driven research and patent intelligence for your innovation.

Organic-inorganic composite electrochromic film and preparation method thereof

An inorganic composite and electrochromic technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, coatings, etc., can solve the problems of uneven mixing of two phases, poor bonding of polyaniline and oxides, etc., to achieve Large spectrum adjustment range, rich colors and long cycle life

Active Publication Date: 2012-11-21
ZHEJIANG UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all have some defects, such as polyaniline and oxide can not be well bonded, the two phases are mixed unevenly, therefore, it is necessary to propose a new preparation method to obtain composite materials with excellent properties

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
  • Organic-inorganic composite electrochromic film and preparation method thereof
  • Organic-inorganic composite electrochromic film and preparation method thereof
  • Organic-inorganic composite electrochromic film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) First drop 100% concentrated hydrochloric acid with a concentration of 35wt% into 400ml of a sodium tungstate solution with a concentration of 1mol / L to obtain a pale yellow white tungstic acid precipitate. Wash the precipitate with deionized water until no chloride ions are detected in the washing solution (drop 1 mol / L silver nitrate solution into the washing solution to detect the chloride ion concentration until no silver chloride precipitates in the washing solution). Dissolve the obtained white tungstic acid precipitate in 50ml of 30wt% hydrogen peroxide solution, add deionized water to prepare 400ml peroxytungstic acid solution with tungsten concentration of 1mol / L, and refrigerate at 7°C until use.

[0034] 2) Dissolve 3.4g of aniline in 4000ml of deionized water to prepare a solution with a concentration of 0.05mol / L, and seal and refrigerate at 7°C until use.

[0035] 3) Dissolve 22.8g of ammonium persulfate in deionized water to prepare 400ml of a solution...

Embodiment 2

[0049] 1) First drop 1000ml of concentrated hydrochloric acid with a concentration of 35wt% into 2000ml of a sodium tungstate solution with a concentration of 1mol / L to obtain a pale yellow white tungstic acid precipitate. Wash the precipitate with deionized water until no chloride ions are detected in the washing solution (drop 1 mol / L silver nitrate solution into the washing solution to detect the chloride ion concentration until no silver chloride precipitates in the washing solution). Dissolve the obtained white tungstic acid precipitate in 200ml of 30wt% hydrogen peroxide solution, add deionized water to prepare 400ml peroxytungstic acid solution with a tungsten concentration of 5mol / L, and refrigerate at 15°C until use.

[0050] 2) Dissolve 3.4g of aniline in 4000ml of deionized water to prepare a solution with a concentration of 0.05mol / L, and seal and refrigerate in an environment of 15°C until use.

[0051] 3) Dissolve 22.8g of ammonium persulfate in deionized water t...

Embodiment 3

[0063] 1) First drop 1000ml of concentrated hydrochloric acid with a concentration of 35wt% into 800ml of sodium tungstate with a concentration of 1mol / L to obtain a pale yellow white tungstic acid precipitate. Wash the precipitate with deionized water until no chloride ions are detected in the washing solution (drop 1 mol / L silver nitrate solution into the washing solution to detect the chloride ion concentration until no silver chloride precipitates in the washing solution). Dissolve the obtained white tungstic acid precipitate in 100ml of hydrogen peroxide (30wt%) solution, add deionized water to prepare 400ml peroxytungstic acid solution with tungsten concentration of 2mol / L, and refrigerate at 10°C until use.

[0064] 2) Dissolve 6.8g of aniline in 4000ml of deionized water to prepare a solution with a concentration of 0.1mol / L, and seal and refrigerate in an environment of 10°C until use.

[0065] 3) Dissolve 45.6g of ammonium persulfate in deionized water to prepare 400...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an organic-inorganic composite electrochromic film and a preparation method thereof. The film is a composite film of polyaniline and tungsten trioxide, wherein the 5 to 80% by mass of tungsten trioxide is contained by the film and the thickness of the film is 50 to 300nm; besides, the surface of the film is in a nanorod array appearance. The preparation method comprises the following steps that: ITO glass or ITO / PET are utilized as a substrate, wherein the surface of the ITO glass or the ITO / PET is processed by hydroxylation; and the substrate is set upright verticallyand is fixed in a reaction vessel; a mixing solution of a tungstic add peroxide solution and an aniline solution is poured into the reaction vessel, followed by stirring; an ammonium persulfate solution is added and reaction is carried out with stirring; after the reaction is completed, the substrate which a thin film is deposit on is taken out; and then washing and drying are carried out to obtain an organic-inorganic composite electrochromic film. According to the preparation method provided in the invention, polyaniline / oxidizing material are compounded at a molecular level; the process issimple; components can be controlled conveniently; costs are low, and industrialization is easy to be realized; besides, a spectrum of the manufactured film can be adjusted in a wide range; and the film has advantages of abundant colors, rapid response speed, long cycle life and wide application range.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to an organic-inorganic composite electrochromic film and a preparation method thereof. Background technique [0002] Electrochromics (EC) refers to the phenomenon that the optical properties of materials undergo reversible changes under the action of an external electric field. Electrochromism only needs a voltage of about 2V to work, and the original coloring or fading state can be kept unchanged in the open circuit state, so the energy consumption is very little. Electrochromic devices (ECD) are expected to be used in building energy-saving windows, automotive anti-glare rearview mirrors, display devices, variable transmittance glasses, automotive sunroofs, and surface temperature control of spacecraft. Electrochromic materials are mainly divided into three types, namely inorganic electrochromic materials (generally transition metal oxides), organic single-molecul...

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 Patents(China)
IPC IPC(8): C08L79/02C08K3/22C09K9/00C03C17/23C03C17/32C08J7/04C08G73/02
Inventor 涂江平张俊王秀丽谷长栋
Owner ZHEJIANG UNIV