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Ultra-flexible self-generating yarn, all-fiber-based ultra-flexible temperature-difference self-generating fabric and preparation method thereof

An ultra-flexible, self-generating technology, applied in fabrics, fiber processing, knitting, etc., can solve the problems of uniformity and stability of power generation, limited power generation efficiency, inconvenient integration and use of wearable micro-nano electronic devices, etc. Achieve good uniformity of power generation, improve power generation efficiency and integration, and realize the effect of large-scale production

Active Publication Date: 2022-08-02
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the fiber-based thermoelectric functional material can realize self-power generation, it is not convenient for the integration and use of wearable micro-nano electronic devices due to the thickness direction of the fiber substrate as a whole, and the power generation efficiency is limited. When the temperature difference is uneven, the uniformity and stability of power generation are easily affected

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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  • Ultra-flexible self-generating yarn, all-fiber-based ultra-flexible temperature-difference self-generating fabric and preparation method thereof
  • Ultra-flexible self-generating yarn, all-fiber-based ultra-flexible temperature-difference self-generating fabric and preparation method thereof
  • Ultra-flexible self-generating yarn, all-fiber-based ultra-flexible temperature-difference self-generating fabric and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0049] The preparation method of the self-generating yarn is to first prepare the P-type thermoelectric material region and / or the N-type thermoelectric material region and the electrode, and then press the P-type thermoelectric material region and / or the N-type thermoelectric material region and the electrode. Or weave the P-type thermoelectric material area and / or the N-type thermoelectric material area first, and then knit into the fabric according to the position of the P-type thermoelectric material area and / or the N-type thermoelectric material area, and finally Electrodes are prepared from the portion of the generating yarn that is on the surface of the fabric.

[0050] The present invention also provides a preparation method of an all-fiber-based ultra-flexible thermoelectric self-generating fabric, comprising the following steps:

[0051] S1. Add DMSO with a volume fraction of 5% to the basic P-type thermoelectric material, prepare a solution containing PEDOT:PSS by u...

Embodiment 1

[0066] An all-fiber-based ultra-flexible thermoelectric self-generating fabric is prepared through the following steps:

[0067] S1. To the PEDOT:PSS aqueous solution (specification: Clevios PH1000) with a mass fraction of 1.3%, add DMSO with a volume fraction of 5%, and prepare a solution containing PEDOT:PSS by ultrasonic treatment (ultrasonic treatment time is 30-45 min), Then add 1-ethyl-3-methylimidazolium dicyanoammonium salt (EMIM DCA) with a total mass of 1 wt % of the PEDOT:PSS aqueous solution, and fully stir to form a uniform IL / PEDOT mixed solution, that is, a P-type thermoelectric material solution (stirred). The temperature is 25 °C, the stirring speed is 600 r / min, and the stirring time is 15h); the addition of ionic liquid to the basic thermoelectric material can form a complete film on the surface of the yarn, maintain the flexibility of the yarn itself, and can obtain ultra-high temperature. Flexible power-generating yarn. In addition, the addition of ionic ...

Embodiment 2-5 and comparative example 1

[0075] An all-fiber-based ultra-flexible thermoelectric self-generating fabric, compared with Example 1, is different in that in step S1, the types and contents of ionic liquids are shown in Table 1. Others are substantially the same as those in Embodiment 1, and are not repeated here.

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Abstract

The invention provides an ultra-flexible self-generating yarn, an all-fiber-based ultra-flexible temperature-difference self-generating fabric and a preparation method thereof. The ultra-flexible self-generating yarn adopts P-type thermoelectric material composed of PEDOT:PSS and ionic liquid to coat and modify the fiber or yarn, which significantly improves the film-forming property of PEDOT:PSS, and also enhances the flexibility of the yarn. improve its thermoelectricity. The N-type thermoelectric material and the above-mentioned P-type thermoelectric material are coated adjacent to the surface of the yarn substrate, and are connected by electrodes to form a series thermoelectric path. The flexibility, thermoelectricity and stability of power generation of the all-fiber-based ultra-flexible thermoelectric self-generating fabrics thus prepared are significantly improved, providing an effective way for the all-fiber-based ultra-flexible thermoelectric self-generating fabrics. Therefore, as a power source, it has high promotion and application value in the fields of sensor device power supply, smart clothing, and wearable electronic devices.

Description

technical field [0001] The invention relates to the technical field of functional fabrics, in particular to an ultra-flexible self-generating yarn, a full-fiber-based ultra-flexible temperature-difference self-generating fabric and a preparation method thereof. Background technique [0002] With the rapid development of artificial intelligence and the popularization of smart terminals, wearable electronic devices present a huge market prospect. As the core part of artificial flexible electronic devices, flexible sensors have great application potential in the fields of human clinical diagnosis, health assessment, health monitoring, virtual electronics, flexible touch screens, flexible electronic skins, and even industrial robots. A key technology of wearable electronic devices lies in the power supply of various integrated electronic devices. Most of the existing technologies are powered by external power supplies, which increases the burden of wearable electronic devices an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/63D06M15/233D06M13/473D06M11/74D03D1/00D03D15/533D04B1/14D04B21/00D04H1/42D04H3/00
CPCD06M15/63D06M15/233D06M13/473D06M11/74D03D1/0088D03D15/00D04B1/14D04B21/00D04H3/00D04H1/42
Inventor 李沐芳曾凡佳王栋罗梦颖卿星陆莹钟卫兵
Owner WUHAN TEXTILE UNIV
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