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Polymer electrochromic fabric and preparation method thereof

A technology of electrochromic and electrochromic devices, which is applied in the fields of textiles, papermaking, optics, instruments, etc., can solve the problems of difficult polyaniline film with large area, poor solubility of polyaniline, low conductivity, etc., and achieve simple preparation method, Excellent and durable electrical conductivity, uniform film thickness

Inactive Publication Date: 2011-07-27
QUANZHOU JIANENG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Among the current methods of preparing electrochromic materials using polyaniline, the method of preparing polyaniline by electrochemical polymerization is difficult to prepare large-area films; in the process of preparing polyaniline electrochromic materials by traditional chemical oxidation methods, there are still polymerization The solubility of aniline is poor, it is difficult to process, the synthesis process will pollute the environment, and the conductivity is not high.

Method used

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  • Polymer electrochromic fabric and preparation method thereof
  • Polymer electrochromic fabric and preparation method thereof
  • Polymer electrochromic fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1. Dissolve 1 mL of 0.1 mol / L aniline and the same amount of o-aminobenzenesulfonic acid as aniline in 1 mL of 0.1 mol / L H 2 SO 4 In solution, get solution A;

[0031] Step 2. Put a certain amount (8mg) of fiber into 4mL of 0.1mol / L H 2 SO 4 , And then add 4mL cyclohexane to the solution, shake in ultrasonic for 12h to obtain solution B;

[0032] Step 3. Soak B in solution A, put it into the reaction tank, and ultrasonically disperse for 1 hour.

[0033] Step 4. The electrode is polished and chemically treated, and cyclic voltammetry is scanned in a potential range of -0.10~0.95V in 50mL of 0.5mol / L HCl solution until a stable cyclic voltammogram is obtained, and then Insert the polarized electrode into the reaction cell for 10 minutes, take out the electrode and soak it in anhydrous cyclohexane, rinse it with hydrochloric acid, acetone, and water in turn, and use N 2 Blow dry and dry at 40°C for 1 hour.

[0034] Step 5. Slowly add 4mL 0.1mol / L(NH 4 ) 2 S 2 O 8 , React for...

Embodiment 2

[0037] Step 1. Dissolve 5 mL of 0.2mol / L aniline and the same amount of o-aminobenzoic acid as aniline in 2 mL of 0.5mol / L p-toluenesulfonic acid solution to obtain solution A;

[0038] Step 2. Put a certain amount (14mg) of fiber into 12mL of 0.4mol / L p-toluenesulfonic acid, and then add 6mL of cyclohexane to the solution, and vibrate in ultrasonic for 16h to obtain solution B;

[0039] Step 3. Soak B in the A solution, put it in the reaction tank, and ultrasonically disperse for 2h.

[0040] Step 4. The electrode is polished and chemically treated, and the electrode is exposed to 60mL of 0.55mol / L H 2 SO 4 In the solution, scan the cyclic voltammetry in the potential range of -0.10~0.95V until a stable cyclic voltammogram is obtained, then insert the polarized electrode into the reaction cell for 15 minutes, and take out the electrode soaked in anhydrous cyclohexane. Wash with hydrochloric acid, acetone, and water in turn, and use N 2 Blow dry and dry at 45°C for 1.5h.

[0041] Step...

Embodiment 3

[0044] Step 1. Dissolve 13mL of 0.34mol / L aniline and N-(4-sulfophenyl)aniline equivalent to aniline in 8mL of 0.55mol / L camphorsulfonic acid solution to obtain solution A;

[0045] Step 2. Put a certain amount (12 mg) of fibers into 10 mL of 0.4 mol / L polyvinyl chloride sulfonic acid, and then add 8 mL of cyclohexane to the solution, and vibrate in ultrasonic for 18 hours to obtain solution B;

[0046] Step 3. Soak B in solution A, put it in the reaction tank, and ultrasonically disperse for 2.5h.

[0047] Step 4. The electrode is polished and chemically treated, at 0.7mol / L of H 3 PO 4 In the solution, carry out cyclic voltammetry scanning in the potential range of -0.10~0.95V until a stable cyclic voltammogram is obtained, then insert the polarized electrode into the reaction cell for 25 minutes, and take out the electrode and soak it in anhydrous cyclohexane. Wash with hydrochloric acid, acetone, and water in turn, and use N 2 Blow dry and dry at 55°C for 2.5h.

[0048] Step 5. Sl...

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Abstract

The invention provides an electrochromic fabric and a preparation method thereof, relates to an electrochromic material, and aims at synthesizing an electrochromic fabric with low cost, controllable discoloration and reversible circulation by using an in-situ chemical method. The electrochromic fabric is a sandwich type electrochromic device consisting of a direct current power supply, positive and negative electrodes, an electrolyte solution, an electrochromic material and the like, has the alert inducing characteristic of a conductive polymer, has the physical mechanical performance and soft comfort of matrix fiber, and has the advantages that a polyaniline film formed on the surface of the fiber has uniform thickness; the defects of easy leakage and uneven discoloration of the traditional electrolyte are overcome; and the conductive performance is excellent; the color is controllable, the circulation is reversible, and the material maintains longer after power off. Furthermore, thefabric has static resistance, corrosion prevention and an excellent electromagnetic shielding function, is an environmentally friendly product, and has simple process flows, low production cost and excellent product performance.

Description

Technical field [0001] The invention relates to an electrochromic material, in particular to an electrochromic fabric with low cost, easy color change controllable, and reversible cycle and a preparation method thereof. Background technique [0002] Electrochromism means that under the action of an external electric field, the material is oxidized or reduced to cause a reversible change in light transmission or reflection, which is a reversible color phenomenon in appearance. According to the structure of the material, it can generally be divided into inorganic electrochromic materials (such as WO 3 , V 2 O 5 , NiO, etc.) and conductive polymers (polyaniline, polythiophene, polypyrrole, etc.). Inorganic electrochromic materials have the advantages of high color contrast, high cycle stability, strong adhesion and high thermal stability. Compared with the former, conductive polymer electrochromic materials have the following advantages: ①have good electrochemical redox reversibili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/153G02F1/155D06M15/61
Inventor 庄碧双
Owner QUANZHOU JIANENG MACHINERY MFG
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