Preparation method of polyaniline electrochromic film

An electrochromic and polyaniline technology, applied in the direction of coating, etc., can solve the problems of low electrochromic efficiency, low contrast of electrochromic film, poor stability, etc., so as to improve the efficiency of electrochromic and benefit electronic and ion implantation and extraction, which is beneficial to the electrochromic effect

Inactive Publication Date: 2017-11-24
常州市泰英物资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problems of low contrast, low electrochromic efficiency and poor stability of the polyaniline electrochromic film, which are only prepared by physical combination in the existing polyaniline electrochromic film preparation process, and provide A preparation method of polyaniline electrochromic film

Method used

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  • Preparation method of polyaniline electrochromic film

Examples

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example 1

[0018] According to the mass ratio of 1:1:10, potassium monopersulfate, ammonium persulfate and deionized water were mixed, stirred at 45 for 10 minutes to obtain a modified solution, and then the aniline monomer was added dropwise to the In the modified solution, the dropping time is controlled to be 105 minutes. After the dropping is completed, the mixed solution is obtained. The polyvinyl alcohol and the mixed solution are stirred and mixed at a volume ratio of 1:10, and the temperature is raised to 78°C. After the heat preservation reaction for 2 hours, the mixed emulsion is obtained. , according to the mass ratio of 1:2, mix the mixed emulsion with acetone, centrifuge at 3500r / min and collect the lower precipitate, vacuum dry for 20h and grind to obtain modified polyaniline particles; according to the mass ratio of 1:12, tungstic acid Mix sodium and deionized water, stir at room temperature for 25 minutes to obtain sodium tungstate solution, add 15% hydrochloric acid dropw...

example 2

[0020] According to the mass ratio of 1:1:10, potassium monopersulfate, ammonium persulfate and deionized water were mixed, stirred at 47 for 12 minutes to obtain a modified solution, and then the aniline monomer was added dropwise to the In the modified solution, the dropping time is controlled to be 112 minutes. After the dropping is completed, the mixed solution is obtained. The polyvinyl alcohol and the mixed solution are stirred and mixed at a volume ratio of 1:10, and the temperature is raised to 82 ° C. After the heat preservation reaction for 3 hours, the mixed emulsion is obtained. , according to the mass ratio of 1:2, mix the mixed emulsion with acetone, centrifuge at 3750r / min and collect the lower precipitate, vacuum dry for 22h and grind to obtain modified polyaniline particles; according to the mass ratio of 1:12, tungstic acid Mix sodium and deionized water, stir at room temperature for 27 minutes to obtain sodium tungstate solution, add 15% hydrochloric acid dro...

example 3

[0022] According to the mass ratio of 1:1:10, potassium monopersulfate, ammonium persulfate and deionized water were mixed, stirred at 50 for 15 minutes to obtain a modified solution, and then the aniline monomer was added dropwise to In the modified solution, the dropping time is controlled to be 120 minutes. After the dropping is completed, the mixed solution is obtained. The polyvinyl alcohol and the mixed solution are stirred and mixed at a volume ratio of 1:10, and the temperature is raised to 85°C. After the heat preservation reaction for 3 hours, the mixed emulsion is obtained. , according to the mass ratio of 1:2, mix the mixed emulsion with acetone, centrifuge at 4000r / min and collect the lower precipitate, vacuum dry for 24h and grind to obtain modified polyaniline particles; according to the mass ratio of 1:12, tungstic acid Mix sodium and deionized water, stir at room temperature for 30 minutes to obtain sodium tungstate solution, add 15% hydrochloric acid dropwise ...

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Abstract

The invention relates to a preparation method of a polyaniline electrochromic film, belonging to the field of preparation of photoelectric materials. According to the preparation method, a solution is prepared by compounding ammonium persulfate and potassium monopersulfate; a polyaniline material with good water solubility is prepared by carrying out emulsion polymerization in a water phase; polyaniline is effectively dispersed and compounded with sodium tungstate sol; polymerization reaction is carried out under the connecting action of polyvinyl alcohol, and a compound material which has a crosslinked network structure and is in a stable state can be formed; in the compound material, a synergetic system is formed by a cathode component WO3 and an anode component polyaniline, so that a firm chemical bond is formed, the electrochromic property and electrochromic efficiency of a composite film are improved, and the surface of the film is improved; after the preparation method is adopted, nanofibers are neatly arranged, microchannels are uniform, the injection and extraction of electrons and ions are facilitated, and the electrochromism of the composite film is more easily realized; furthermore, the polyvinyl alcohol effectively improves the film-forming property of the material, improves the film density and further improves the material stability.

Description

technical field [0001] The invention relates to a preparation method of a polyaniline electrochromic film, belonging to the field of photoelectric material preparation. Background technique [0002] Electrochromism refers to the reversible change between the colored state of low transmittance and the achromatic state of high transmittance by injecting or extracting charged ions or electrons under the action of alternating high and low or positive and negative external electric fields. A special phenomenon of polyaniline, which is manifested as a reversible change in color and transparency in appearance. Polyaniline has little environmental pollution, is harmless to the human body, is easy to synthesize, easy to handle, low production cost, high temperature resistance and oxidation resistance. Electrochromic has high contrast, and has satisfactory electrical conductivity, good thermal stability and cycle stability, and has attracted people's attention. It has been widely use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/42
CPCC03C17/42C03C2217/70C03C2218/116
Inventor 陈英季美
Owner 常州市泰英物资有限公司
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