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Nano fiber and textile electrode integrated wearable sensing member

A technology for fabric electrodes and sensing devices, applied in the direction of sensors, non-woven fabrics, textiles and papermaking, can solve problems such as reducing comfort, affecting electrical conductivity, affecting air permeability, etc., achieving good tensile properties, mature preparation technology, Practical effect

Inactive Publication Date: 2019-04-19
江苏国源环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In wearable devices, in addition to wearable substrates being a research hotspot, electrode materials used in wearable devices are an important factor restricting the development of flexible wearables. On the one hand, traditional electrode materials are mainly rigid materials. For example, aluminum foil, copper foil, etc., are not suitable for wearable devices; on the other hand, for nanofibers, most of the methods currently used are coating or screen printing to load conductive materials on the surface of the fiber film, which will It brings two disadvantages. On the one hand, the contact between the conductive material and the substrate is not firm. For stretched devices, the conductive material will be separated from the substrate during the stretching process, which will affect its conductivity and also affect the tensile strength of the substrate. On the other hand, since the pores of nanofibers are mostly interconnected pores, there will be liquid seepage during the coating or printing process, which is not beautiful, but the most important thing is to affect its air permeability and reduce its comfort. Spend

Method used

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  • Nano fiber and textile electrode integrated wearable sensing member
  • Nano fiber and textile electrode integrated wearable sensing member
  • Nano fiber and textile electrode integrated wearable sensing member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing a wearable sensor device integrated with nanofibers and fabric electrodes, comprising the steps of:

[0026] 1). Coaxial fabric electrode weaving: take the conductive silver wire as the axis, and use weaving technology to wind multiple yarns with strong electronegativity outside it. The number of yarns wrapped outside the conductive silver wire is 12. ~24 wires, do not expose the silver wire to the outside to make it a coaxial fabric electrode; the conductive silver wire in the axis is the electrode material of the sensor, and the yarn wound on the outer layer is used as the friction negative electrode material, and the outermost layer Electrospun nanofibrous membranes as tribocathode materials.

[0027] 2). Preparation of TPU electrostatic nanofiber membrane: Dissolve 1.0g of TPU in 10ml of mixed spinning solvent of dichloromethane and N,N-dimethylformamide, in which dichloromethane and N,N-di The volume ratio of methyl formamide is 1:5, and the...

Embodiment 2

[0032] A method for preparing a wearable sensor device integrated with nanofibers and fabric electrodes, comprising the steps of:

[0033] 1). Coaxial fabric electrode weaving: take conductive silver wire as the axis, and use weaving technology to wind multiple strands of yarn with strong electronegativity outside it. The yarn can be PVDF, PTFE, PTFE-HFP, FEP; Do not expose the silver wire to make it a coaxial fabric electrode;

[0034] 2). Preparation of FPU nanofiber membrane: Dissolve 3.0g of FPU in 15ml of a mixed spinning solvent of dichloromethane and N,N-dimethylformamide, wherein dichloromethane and N,N-dimethylformamide The volume ratio of methyl formamide is 1:1, and the FPU spinning solution is prepared for spinning; the electrospinning voltage is 18-25kV, the propulsion speed is 0.6-1mL / h, and the receiving distance is 15-20cm, and the FPU electrospinning solution is obtained. Nanofiber membrane, the thickness of the electrospun nanofiber membrane is 25-50 μm;

...

Embodiment 3

[0040] A method for preparing a wearable sensor device integrated with nanofibers and fabric electrodes, comprising the steps of:

[0041] 1). Conduct coaxial fabric electrode weaving: take conductive silver wire as the axis, and use weaving technology to wind multiple strands of yarn with strong electronegativity outside it. The yarn can be PVDF, PTFE, PTFE-HFP, FEP, Do not expose the silver wire to the outside to make it a coaxial fabric electrode, the conductive silver wire is the electrode material of this sensor, the outer wound yarn is used as the friction negative electrode material, and the outermost electrospun nanofiber membrane is used as the friction positive electrode Material, the number of strands of yarn wound on the outside of the conductive silver wire is 12 to 24;

[0042] 2). Preparation of PAN nanofiber membrane: Dissolve 1.0-3.0 g of PAN in 10-15 ml of a mixed spinning solvent of dichloromethane and N,N-dimethylformamide, wherein dichloromethane and N, T...

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Abstract

The invention discloses a preparation method of a nano fiber and textile electrode integrated wearable sensing member. The method comprises the steps that a coaxial textile electrode is prepared by taking a conductive silver wire as the axial center and winding the outer layer of the coaxial textile electrode with multiple strands of yarns with stronger electronegativity, the outer surface of thecoaxial textile is wrapped with a layer of electrostatic spinning nano fiber membrane with high tensile performance, and a high-tension energy-harvesting wearable sensing member with integrated nano fiber and textile electrode can be prepared. The wearable sensing member can be used for wearable electronic skin, when the electronic skin is externally stimulated, energy harvesting is achieved through triboelectrification for outputting a sensing signal, the preparation of the member is simple, and the wearable sensing member has a hope to achieve industrial development.

Description

technical field [0001] The invention relates to the field of green new energy sensors, in particular to a wearable sensor integrated with nanofibers and fabric electrodes. Background technique [0002] With the deepening of research, wearable electronic devices not only need to meet their functionality, but also put forward higher requirements for their flexibility and comfort. Therefore, PDMS with high flexibility has become a research hotspot, but PDMS itself is not breathable. , is not suitable for long-term contact with the skin, and nanofibers have the advantages of ultra-light, ultra-soft and good air permeability, and have received more and more attention in the field of wearable devices. [0003] In wearable devices, in addition to wearable substrates being a research hotspot, electrode materials used in wearable devices are an important factor restricting the development of flexible wearables. On the one hand, traditional electrode materials are mainly rigid materia...

Claims

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Application Information

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IPC IPC(8): A61B5/11D04H1/4358D04H1/728
CPCD04H1/4358A61B5/11A61B5/6802D04H1/728
Inventor 姚政
Owner 江苏国源环境科技有限公司
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