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A stretchable multi-mode sensor based on nanofiber core-spun yarn and its preparation method

A nanofiber and core-spun yarn technology, applied in fiber processing, ultrasonic/acoustic fiber processing, yarn, etc., can solve the problems of small flexible detectable range, inability to apply flexible wearable sensors, etc., and achieve large deformation space and reversible ability , The production process is simple and easy to operate, and the effect of high yield

Active Publication Date: 2020-03-31
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional strain sensors, such as those based on metal foils and semiconductors, cannot be applied to flexible wearable sensors due to their inflexibility and small detectable range (<5%).

Method used

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  • A stretchable multi-mode sensor based on nanofiber core-spun yarn and its preparation method
  • A stretchable multi-mode sensor based on nanofiber core-spun yarn and its preparation method
  • A stretchable multi-mode sensor based on nanofiber core-spun yarn and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of a flexible and stretchable multi-mode sensor based on nanofiber core-spun yarn, including the following steps: (1) Put the elastic core yarn into the lower electrode of a low-temperature plasma processor for central processing, oxygen is the working gas, and the system The pressure was kept at 30 Pa, the discharge power was 60W, and the treatment time was 45 min to obtain plasma-modified elastic core yarn;

[0036] (2) Add the carbon nanotube powder into the dimethylformamide solvent, and perform strong ultrasonic treatment under the condition of normal temperature and sealing to obtain a uniformly dispersed carbon nanotube (CNT) solution; then add high-elastic polyurethane particles, and heat Magnetic stirring for 8 h to obtain a uniform carbon nanotube / polymer conductive solution; the molecular weight of the highly elastic polyurethane particles is 200,000; the mass concentration of the carbon nanotube / polymer conductive solution is 9%, carbon n...

Embodiment 2

[0043] A preparation method of a flexible and stretchable multi-mode sensor based on nanofiber core-spun yarn, including the following steps: (1) Put the elastic core yarn into the lower electrode of a low-temperature plasma processor for central processing, oxygen is the working gas, and the system The pressure was maintained at 60 Pa, the discharge power was 80 W, and the treatment time was 30 minutes to obtain plasma-modified elastic core yarn;

[0044] (2) Add the carbon nanotube powder into the toluene solvent, and carry out strong ultrasonic treatment under the condition of room temperature and sealing to obtain a uniformly dispersed carbon nanotube (CNT) solution; then add the Parafilm film, stir magnetically at 70 °C for 6 h to obtain a uniform The carbon nanotube / Parafilm conductive solution; The model of the Parafilm film is PM992; The mass concentration of the CNT / Parafilm solution is 11%, and the mass ratio of the carbon nanotube (CNT) and the Parafilm film is 1:5; ...

Embodiment 3

[0050] A method for preparing a flexible and stretchable multi-mode sensor based on nanofiber core-spun yarn, comprising the following steps: (1) Put the elastic core yarn into the center of the lower electrode of a low-temperature plasma processor, oxygen is the working gas, and the system pressure is Maintaining 100 Pa, discharging power of 120 W, and treatment time of 20 min, the plasma-modified elastic core yarn was obtained;

[0051] (2) Add the carbon nanotube powder into the toluene solution, and perform strong ultrasonic treatment under normal temperature and sealed conditions to obtain a uniformly dispersed carbon nanotube (CNT) solution; then add the Parafilm film and stir magnetically at 80 °C for 4 h to obtain a uniform CNT / Parafilm conductive solution. The model of the Parafilm film is PM992; the mass concentration of the CNT / Parafilm solution is 13%, and the mass ratio of carbon nanotubes (CNT) to the Parafilm film is 1:7;

[0052] (3) Evenly coat the CNT / Parafi...

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Abstract

The invention discloses a flexible and stretchable multi-mode sensor based on nanofiber core-spun yarn and its preparation method. The invention includes elastic conductive core yarn and carbon nanotube / polymer composite nanofiber, carbon nanotube / polymer The composite nanofiber is coated on the surface of the elastic conductive core yarn by electrospinning technology to prepare a continuous nanofiber core-spun yarn. The nanofiber core-spun yarn is woven into a fabric through the principle of weaving. A flexible and stretchable multifunctional sensor of a core-spun yarn; the elastic conductive core yarn is prepared by coating a carbon nanotube / polymer conductive solution on the surface of the elastic core yarn. The invention weaves intelligent sensing units into fabrics by means of weaving and the like and assembles them into new intelligent wearable clothing, effectively promoting the development of flexible intelligent wearable products.

Description

technical field [0001] The invention relates to the field of wearable electronic skin prepared by flexible sensors, in particular to a flexible and stretchable multi-mode sensor based on nanofiber core-spun yarn and a preparation method thereof, which are applied to real-time monitoring of human health and full range of motion. Background technique [0002] Artificial electronic skin is a flexible sensor that can bionic human skin perception function by converting various mechanical stimuli in the surrounding environment, such as pressure, strain, shear force, temperature, humidity, etc., into electrical signals. It has broad application prospects in the field of robot automation, flexible electronics, wearable devices, biomedicine, human-computer interaction and other fields. Conventional strain sensors, such as those based on metal foils and semiconductors, cannot be applied to flexible wearable sensors due to their inflexibility and small detectable range (<5%). In or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00D02G3/32D03D1/00D03D15/08D06M10/02D06M11/74D06M15/564D06M15/643D03D15/56
CPCD01D5/003D01D5/0061D02G3/328D03D1/00D06M10/025D06M11/74D06M15/564D06M15/643D03D15/56
Inventor 齐琨何建新周玉嫚刘凡崔世忠邵伟力胡宝继佑晓露南楠孙显强
Owner ZHONGYUAN ENGINEERING COLLEGE
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