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Color-changing camouflage fabric based on reflective electrochromic device and preparation method thereof

An electrochromic, conductive fabric technology, applied in chemical instruments and methods, instruments, synthetic resin layered products, etc., can solve problems such as insufficient softness, large thickness, and difficulty in achieving flexibility for color-changing devices.

Active Publication Date: 2013-02-27
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 thickness of 188 μm. Other possible electrode materials such as conductive adhesives, PEDOT / PSS, metal mesh or fabrics have color or other lack of electricity, which leads to electro-induced Color-changing devices are difficult to achieve flexibility

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
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  • Color-changing camouflage fabric based on reflective electrochromic device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The invention discloses a preparation method of a color-changing camouflage fabric capable of realizing the interchanging of three camouflage patterns.

[0063] Designed woodland camouflage, desert camouflage and ocean camouflage patterns with four-color patches, among which the woodland camouflage contains four-color patches of green, dark brown, black and light gray, and the desert camouflage contains a total of khaki, dark brown, black and light gray. Four-color patches, marine camouflage includes four-color patches of blue, dark brown, black and light gray. In the three camouflage fabrics, except for the main colors of green, khaki and blue, the other three-color patches are the same in color and shape. Silver fibers and cotton fibers are used as warp yarns, and the silver fibers and cotton fibers are arranged in a ratio of 1:1, and the weft yarns are also woven with silver and cotton in a 1:3 arrangement to obtain a white fabric with a resistivity of 30Ω.cm. The f...

Embodiment 2

[0071] A color-changing camouflage fabric preparation method using flexible conductive camouflage fabric and metallized fabric electrodes. Except for the following differences, other preparation steps and materials used are the same as in Example 1.

[0072]Embodiment 1 provides the preparation method of the color-changing camouflage fabric that adopts silver fiber and cotton fiber interweaving fabric as electrodes. Based on the mature preparation technology of PANI, the flexible conductive fabric electrode is the key factor of the color-changing camouflage fabric.

[0073] Using polyester fabric as the base material, 12% NaOH is used for alkali reduction treatment to make micropores and pits appear on the surface of the fabric, and then electroless plating is used to plate metal copper and nickel, and the metal is made through the micropores on the surface of the fabric. Closely combined with the substrate to obtain a flexible conductive fabric with a resistivity of 20Ω as a...

Embodiment 3

[0076] The invention discloses a method for preparing a color-changing camouflage fabric using polythiophene as an electrochromic polymer. Except for the following differences, other preparation steps and materials used are the same as in Example 1.

[0077] Embodiment 1 has provided the preparation method of color-changing camouflage fabric, wherein electrochromic material adopts polythiophene to replace, and its synthetic process is as follows: 3,4-dioxyethylenethiophene (EDOT) monomer is added to In the PVA1750 solution containing a part of DBSA (PVA mass fraction 2.3%), add a part of sodium persulfate again, stir at room temperature for 10 minutes, gradually add dropwise 1.5 parts of a mass fraction of 14% ferric chloride solution, and react after the dropwise addition 8-10h.

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
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Abstract

The invention relates to color-changing camouflage fabric based on a reflective electrochromic device and a preparation method thereof. The color-changing camouflage fabric comprises a dominant hue patch and an auxiliary color patch, wherein the dominant hue patch is communicated on the whole fabric; the dominant hue patch is a multi-layer structure, and sequentially comprises flexible conductive fabric, an ion storage layer, an electrolyte layer, a dominant hue patch of conductive camouflage fabric, an electrochromic high polymer layer and a transparent protective film layer from the bottom to the top; and the flexible conductive fabric and the conductive camouflage fabric are respectively connected with the anode and the cathode of power supply equipment. In the invention, the obtained color-changing camouflage fabric adopts two fabric electrodes, so the flexibility is completely realized, and the the wearability of wearing fabric is available. The adopted electrochromic high polymer and the reflection type structure has the characteristics of capability of artificial control at low voltage, interchangeability in more than two kinds of camouflage patterns, high changing speed, bright and outstanding color, low cost and more convenient production and processing.

Description

technical field [0001] The invention relates to a color-changing camouflage fabric based on a reflective electrochromic device and a preparation method thereof. Based on the structure of a reflective electrochromic device and completely using flexible fabric electrodes, the electrochromic high The polymer is placed on a flexible conductive camouflage fabric, and the color-changing camouflage fabric and the preparation method thereof are connected with electrodes through a gel-like electrolyte and a flexible conductive fabric coated with an ion storage layer on the surface. This method can realize the color-changing camouflage fabric completely based on flexible fabric electrodes, and has wearing properties such as breathability and moisture permeability. Background technique [0002] Camouflage fabric camouflage technology. The camouflage uniform destroys the overall outline characteristics through reasonable matching of multi-color blocks, and blends the overall tone with ...

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
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/04B32B27/06G02F1/153G02F1/163
Inventor 肖红施楣梧徐坚王昊范浩森
Owner THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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