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A reflective electrochromic fabric and its preparation method

An electrochromic and reflective technology, applied in textiles and papermaking, optics, fiber processing, etc., can solve the problems of insufficient softness, large thickness, and difficulty in realizing flexibility of color-changing devices, and achieves fast change speed, simple preparation method, Rich and vivid color changes

Active Publication Date: 2016-01-20
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

However, the currently commercially available transparent electrodes such as ITO / PET are not soft enough and have a large thickness. The conventional thickness is mostly 125 μm or 188 μm. Other disadvantages, which make it difficult to achieve flexible electrochromic devices

Method used

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  • A reflective electrochromic fabric and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, the preparation of electrochromic fabric

[0034] The polyester fabric is used as the base material, treated with 10% NaOH aqueous solution as lye, so that micropores and pits appear on the surface of the fabric, and then through the electroless plating method, metal copper and nickel are plated, and the micropores on the surface of the fabric are used. The metal and the substrate are closely combined to obtain a flexible conductive fabric with a surface resistance of 15Ω / □, which is used as the counter electrode, that is, the lower conductive fabric; the double-layer fabric woven with polyester fiber is used as the base material, and sputtered on one side of the double-layer fabric by sputtering A silver layer to obtain a flexible conductive fabric with a surface resistivity of 10Ω / □, which is used as the working electrode, that is, the upper layer of conductive fabric.

[0035] Using a DC magnetron sputtering system, sputter a nickel oxide film on the co...

Embodiment 2

[0044] Embodiment 2, the preparation of electrochromic fabric

[0045] Silver fibers and cotton fibers are used as warp yarns, arranged in a ratio of 1:1, and weft yarns are also woven with silver fibers and cotton fibers in a 1:3 arrangement to obtain a flexible conductive fabric with a surface resistance of 30Ω / □, which is used as the counter electrode, that is, the lower conductive fabric ; Double-layer fabric woven with polyester fibers is used as the base material, and a silver layer is sputtered on one side of the double-layer fabric by sputtering to obtain a flexible conductive fabric with a surface resistance of 10Ω / □, which is used as the working electrode, that is, the upper conductive fabric.

[0046] Polyaniline (PANI) is coated on the counter electrode with a thickness of 200 μm as an ion storage layer; the side of the silver plated side of the working electrode is coated with aniline / o-phenylenediamine copolymer with a thickness of 200 μm as an electrochromic poly...

Embodiment 3

[0054] Embodiment 3, the preparation of electrochromic fabric

[0055] Silver fibers and cotton fibers are used as warp yarns, arranged in a ratio of 1:2, and weft yarns are also woven with silver fibers and cotton fibers in a 1:3 arrangement to obtain a flexible conductive fabric with a surface resistance of 35Ω / □, which is used as the counter electrode, that is, the lower conductive fabric ; Double-layer fabric woven with nylon fiber is used as the base material, and a silver layer is sputtered on one side of the double-layer fabric by sputtering to obtain a flexible conductive fabric with a surface resistance of 15Ω / □, which is the upper conductive fabric as the working electrode.

[0056] Polyaniline (PANI) is coated on the counter electrode with a thickness of 200 μm as an ion storage layer; the silver-plated side of the working electrode is coated with poly-3-hexylthiophene (in the form of a tetrahydrofuran solution of poly-3-hexylthiophene) Coating: Dissolve poly 3-hexy...

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Abstract

The invention discloses reflection-type electrochromic fabric and a production method thereof. The fabric comprises lower-layer conductive fabric, an ion storing layer, electrolytes, upper-layer conductive fabric, electrochromic polymers and a transparent protective film. The upper-layer conductive fabric and the lower-layer conductive fabric are respectively connected with an electrode of a direct-current power source through wires. The upper-layer conductive fabric is double-layer fabric comprising a conducting layer and a non-conducting layer. The conducting layer is connected with the electrochromic polymers. The production method includes the following steps: coating the ion storing layer on the lower-layer conductive fabric, and then coating the electrolytes; coating the electrochromic polymers on the conducting layer of the upper-layer conductive fabric; overlapping the upper-layer conductive fabric and the lower-layer conductive fabric; and packaging end faces of the electrochromic polymers of the upper-layer conductive fabric with the transparent protective film. The electrochromic fabric acquired through the production method has the advantages of artificially controllable low voltage, high variation speed, rich and bright color variation, convenience in production and processing, and the like.

Description

technical field [0001] The invention relates to a reflective electrochromic fabric and a preparation method thereof. Background technique [0002] Constructing a fabric like a "chameleon", which can change colors and patterns as the environment changes and blend into the background to achieve camouflage effects, has always been people's dream. As an ideal industrial fabric for battlefield camouflage protection, color-changing fabrics are of vital significance in military camouflage, and can be widely used in camouflage nets, camouflage shelters and camouflage for various military projects, positions, weapons and equipment, and vehicles. Tents, etc., can be changed through the color change of the main color patch, and the other color patches use conventional fabrics to achieve breathable and moisture-permeable design schemes, which can also be used in batches for clothing products such as camouflage uniforms, etc., and have potential broad prospects for civilian use. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/153G02F1/155D06M11/49D06M11/47D06M11/48D06M13/345D06M15/61D06M15/37D06M15/63D06M15/263D06M11/30D06M13/232D06M17/00
Inventor 肖红代国亮施楣梧
Owner THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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