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Polyaniline based electrochromic fabric and manufacturing method thereof

An electrochromic, polyaniline technology, applied in textiles and papermaking, optics, instruments, etc., can solve the problems of limitation, the electrochemical polymerization method is difficult to prepare large-area thin films, and the color-changing thin films cannot be prepared in large areas, etc., and achieve electrical conductivity. The effect of controllable, good physical and mechanical properties, and simple preparation method

Active Publication Date: 2013-08-21
THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the current preparation methods based on polyaniline color-changing materials, the electrochemical polymerization method is difficult to prepare large-area films; although the in-situ polymerization method can prepare large-area films, it cannot be large-area and continuous due to the limitations of equipment containers. Preparation of color-changing film

Method used

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  • Polyaniline based electrochromic fabric and manufacturing method thereof
  • Polyaniline based electrochromic fabric and manufacturing method thereof
  • Polyaniline based electrochromic fabric and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1, preparation electrochromic fabric

[0042] 2g PVA1750 heating is dissolved in the distilled water of 60ml, obtains the PVA aqueous solution that the mass percentage composition of PVA is 3.2%; With 1ml 70%HClO 4 Added into the PVA aqueous solution, ultrasonically stirred for 30min to obtain solution a, wherein, HClO 4 The mass percentage content is 1.93%;

[0043] Mix 0.25ml of aniline and 0.25ml of o-methoxyaniline, add it to solution a, and ultrasonically stir for 30 minutes to obtain solution b, wherein the mass percentage of the mixture of aniline and o-methoxyaniline is 0.82%;

[0044] 3g K 2 S 2 o 8 (the mass fraction ratio of the total mass of aniline and o-methylaniline is 16:1) dissolved in 15ml of distilled water to obtain K 2 S 2 o 8 The mass percentage content is 16.7% of K 2 S 2 o 8 Aqueous solution; K at 0°C 2 S 2 o 8 The aqueous solution was directly added to the solution b under stirring, and the reaction was continued for 3 ho...

Embodiment 2

[0052] Embodiment 2, preparation electrochromic fabric

[0053] 4g of PVA1788 was heated and dissolved in 70ml of distilled water to obtain a PVA aqueous solution with a mass percentage of PVA of 5.4%; 2.5ml of dodecylbenzenesulfonic acid was added to the PVA aqueous solution and ultrasonically stirred for 30min to obtain solution a, wherein , the mass percentage of dodecylbenzenesulfonic acid is 3.43%;

[0054] Mix 1.0ml of aniline and 0.5ml of o-methylaniline, add it into solution a, and ultrasonically stir for 30 minutes to obtain solution b, wherein the mass percentage of the mixture of aniline and o-methylaniline is 1.95%;

[0055] 8.0g (NH 4 ) 2 S 2 o 8 (Its ratio of mass and number with the total mass of aniline and o-methylaniline is 5.3:1) is dissolved in 20ml of distilled water to obtain (NH 4 ) 2 S 2 o 8 The mass percentage content is 28.6% (NH 4 ) 2 S 2 o 8 Aqueous solution; (NH 4 ) 2 S 2 o 8 The aqueous solution was added dropwise to the solution b...

Embodiment 3

[0063] Embodiment 3, preparation electrochromic fabric

[0064] 6g of PVA1799 was heated and dissolved in 80ml of distilled water to obtain a PVA aqueous solution with a mass percentage of PVA of 7%; 4.5g of p-toluenesulfonic acid was added to the PVA aqueous solution and ultrasonically stirred for 30 minutes to obtain solution a, wherein p-toluene The mass percentage composition of sulfonic acid is 5.0%;

[0065] Mix 2.0 ml of aniline and 1.0 g of anthranilic acid, add it into solution a, and ultrasonically stir for 30 minutes to obtain solution b, wherein the mass percentage of the mixture of aniline and anthranilic acid is 3.25%;

[0066] 10g K 2 Cr2 o 7 (the mass and number ratio of it and the total mass of aniline and anthranilic acid is 3.3: 1) dissolved in 25ml distilled water to obtain K 2 Cr 2 o 7 The mass percentage is 28.6% of K 2 Cr 2 o 7 Aqueous solution; K at 30°C 2 Cr 2 o 7 The aqueous solution was added dropwise to the solution b under stirring, the ...

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Abstract

The invention discloses a polyaniline based electrochromic fabric and a manufacturing method thereof. The electrochromic fabric is composed of a polyaniline composite material, an upper conductive fabric layer, a plural gel electrolyte, an ion storage layer and a lower conductive fabric layer from top to bottom. The two outermost layers are transparent protective films, the upper and lower conductive fabric layers are respectively connected with an electrode of a direct-current power source through leads. The manufacturing method includes steps of coating the ion storage layer on the lower conductive fabric layer, keeping coating the plural gel electrolyte, coating the polyaniline composite material on the upper conductive fabric, laminating the upper and lower conductive fabric layers, and packaging the end face of the polyaniline composite material of the upper conductive fabric layer and the end face of the lower conductive fabric by the transparent protecting films. Two electrodes of the electrochromic fabric are directly flexible fabric electrodes, and the electrochromic fabric can be completely complied with performance and characteristics of wearing textile, soft, optionally deformable and suitable for clothings.

Description

technical field [0001] The invention relates to a polyaniline-based electrochromic fabric and a preparation method thereof. Background technique [0002] Fabric or clothing that can change color is the goal that people pursue whether it is in fashion, daily clothing or military camouflage clothing. The color change can be achieved by changing the absorption of the material to the spectrum by factors such as heat, light, humidity, pressure or electric field. However, external stimuli such as heat, light, humidity, and pressure cannot or are difficult to achieve artificial control. It is the development direction of intelligent color-changing materials to realize artificially controllable discoloration by applying small electric field or current control, and electrochromic materials and devices are the first choice. [0003] Under the action of an applied current or electric field, electrochromic materials undergo electrochemical oxidation or reduction reactions, and their op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/153G02F1/155D06M15/61D06M17/00
Inventor 肖红代国亮施楣梧徐坚王昊
Owner THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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