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Super-hydrophobic flexible fabric pressure sensor based on silver nanowires and preparation method of super-hydrophobic flexible fabric pressure sensor

A pressure sensor, super-hydrophobic and flexible technology, applied in the field of wearable sensors, can solve the problems of weak conductivity, single function of conductive fabrics, poor adhesion between conductive materials and fabrics, etc., to achieve good conductivity, suitable for large-scale manufacturing, high The effect of sensitivity

Pending Publication Date: 2021-12-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, although the research and application range of conductive fabrics have been greatly developed, and the reported conductive fabrics have their own advantages, there are generally problems such as weak conductivity, poor adhesion between conductive materials and fabrics, and single function of conductive fabrics. To some extent, its commercial application is limited

Method used

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  • Super-hydrophobic flexible fabric pressure sensor based on silver nanowires and preparation method of super-hydrophobic flexible fabric pressure sensor
  • Super-hydrophobic flexible fabric pressure sensor based on silver nanowires and preparation method of super-hydrophobic flexible fabric pressure sensor
  • Super-hydrophobic flexible fabric pressure sensor based on silver nanowires and preparation method of super-hydrophobic flexible fabric pressure sensor

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Effect test

Embodiment 1

[0029] Said a kind of superhydrophobic flexible all-fabric pressure sensor based on nano-silver wire and its preparation method:

[0030] (1) Dissolve 2 grams of hydroxymethyl cellulose in 100 ml of aqueous solution completely, then add 0.5 grams of aqueous polyurethane solution to it, stir for 10 minutes at 1500~2000 rpm / min, and then add 8 grams of nano silver wire , stirred for 30 minutes under the condition of 1500-2000 rpm / min, and prepared into silver nano wire ink.

[0031] (2) Place the designed screen printing screen on a clean fabric, fix the screen and put the nano-silver wire conductive ink on the screen, and use a scraper to scrape the nano-silver wire ink on the screen, The number of times of scraping is 20 times. After the scraping is completed, the screen is slowly lifted from one side, and a clear circuit can appear on the surface of the fabric. Put the printed circuit fabric into a drying oven at 70-80°C for 15-30 minutes to dry to obtain the bottom electrod...

Embodiment 2

[0037] Described a kind of superhydrophobic antibacterial conductive fabric and preparation method thereof:

[0038](1) Completely dissolve 3.5 grams of hydroxymethyl cellulose in 100 ml of aqueous solution, then add 1 gram of aqueous polyurethane solution to it, stir for 10 minutes at 1500~2000 rpm / min, and then add 15 grams of nano silver wire , stirred for 30 minutes under the condition of 1500-2000 rpm / min, and prepared into silver nano wire ink.

[0039] (2) Place the designed screen printing screen on a clean fabric, fix the screen and put the nano-silver wire conductive ink on the screen, and use a scraper to scrape the nano-silver wire ink on the screen, The number of times of scraping is 10 times. After the scraping is completed, the screen is slowly lifted from one side, and a clear circuit can appear on the surface of the fabric. Put the printed circuit fabric into a drying oven at 70-80° C. for 15-30 minutes to dry to obtain the bottom electrode of the conductive ...

Embodiment 3

[0045] Described a kind of superhydrophobic antibacterial conductive fabric and preparation method thereof:

[0046] (1) Completely dissolve 2 grams of hydroxymethyl cellulose in 100 ml of aqueous solution, then add 0.5 grams of aqueous polyurethane solution, stir for 10 minutes at 1500~2000 rpm / min, and then add 15 grams of nano silver wire , stirred for 30 minutes under the condition of 1500-2000 rpm / min, and prepared into silver nano wire ink.

[0047] (2) Place the designed screen printing screen on a clean fabric, fix the screen and put the nano-silver wire conductive ink on the screen, and use a scraper to scrape the nano-silver wire ink on the screen, The number of times of scraping is 10 times. After the scraping is completed, the screen is slowly lifted from one side, and a clear circuit can appear on the surface of the fabric. Put the printed circuit fabric into a drying oven at 70-80° C. for 15-30 minutes to dry to obtain the bottom electrode of the conductive fabr...

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Abstract

The invention discloses a super-hydrophobic flexible full-fabric pressure sensor based on silver nanowires and a preparation method thereof, and is characterized in that the full-fabric flexible pressure sensor is prepared by taking a silk-screen printed silver nanowire interdigital electrode as a bottom electrode, taking a silver nanowire impregnated fabric as a piezoresistive layer, and packaging the piezoresistive layer and the bottom electrode by adopting a VHB adhesive tape. The nanometer silver wire interdigital electrode not only ensures the flexibility and the conductivity of the bottom electrode, but also greatly improves the adhesive ability between the nanometer silver wire and the fabric due to the firm bonding ability between the hydroxymethyl cellulose and the fabric; the super-hydrophobic functional layer is sprayed on the surface of the nano silver wire piezoresistive layer fabric, so that the piezoresistive layer conductive fabric is endowed with good conductivity and self-cleaning capability, the super-hydrophobic functional layer is used as a barrier layer to improve the use stability of the fabric, and nano silver wires are prevented from falling off under the action of mechanical force. Compared with the prior art, the super-hydrophobic flexible full-fabric pressure sensor based on the silver nanowires has the advantages of high sensitivity, short response time, high flexibility, stable electrical performance and super-hydrophobic self-cleaning effect, the preparation process is simple, and industrial production can be realized.

Description

technical field [0001] The invention relates to the technical field of wearable sensors, in particular to a nano-silver wire-based superhydrophobic flexible fabric pressure sensor and a preparation method thereof. Background technique [0002] In recent years, with the development of flexibility, miniaturization, and functionalization of electronic products, intelligent wearable devices have become a research and development hotspot in academia and industry. Among them, electronic textiles with force-sensitive characteristics not only convert pressure into electrical signals, simulate the function of human skin to detect physiological signals, but also retain the advantages of textiles such as softness, comfort, wearability, and washing resistance. Therefore, the design and preparation of textile electronic devices It has attracted the attention of researchers at home and abroad, and will become a future development trend. [0003] A typical flexible sensor generally consis...

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 Applications(China)
IPC IPC(8): G01L1/22G01L9/06D06M11/83D06M15/564D06M15/09C09D11/52C09D11/14C09D11/102
CPCG01L1/22G01L9/06D06M11/83D06M15/564D06M15/09C09D11/52C09D11/14C09D11/102D06N2209/041D06N2209/142D06N2209/1671D06N2209/146
Inventor 王悦辉赖聪聪李佩锦吴欣雨林凯文卢永熠
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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