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Flexible wearable nano-fiber fabric sensor and preparation method thereof

A fabric sensor and nanofiber technology, which is applied in the fields of sensors, medical science, diagnostic recording/measurement, etc., can solve the problems of narrow sensing range, poor mechanical properties, low sensitivity, etc., and achieve wide sensing range, high sensitivity, The effect of increasing added value

Inactive Publication Date: 2017-10-10
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional sensors based on metal or semiconductor materials show low sensitivity, narrow sensing range, or poor mechanical properties (such as stretching, bending, etc.), which severely limit their applications.

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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  • Flexible wearable nano-fiber fabric sensor and preparation method thereof
  • Flexible wearable nano-fiber fabric sensor and preparation method thereof
  • Flexible wearable nano-fiber fabric sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of the flexible and wearable nanofiber fabric sensor of this embodiment, the steps are as follows:

[0032] (1) Polyvinylidene fluoride (PVDF) was dissolved in a mixed solvent of N,N dimethylformamide (DMF) and tetrahydrofuran (mass ratio 1:1), stirred at 80°C for 6 h to obtain a mass fraction of 16.5% PVDF solution;

[0033] (2) Build the electrospinning device according to Figure 1, add the spinning solution in step (1) to the syringe pump to prepare continuous nanofiber yarn, the electrospinning voltage is 17.5 kV, and the total flow rate of the spinning solution is 0.6 mL / h, the diameter of the metal horn is 10 cm, the vertical distance between the metal horn and the winding device is 50 cm, the vertical distance between the nozzle and the metal horn is 4 cm, the horizontal distance between the nozzle and the metal horn is 3 cm, and the distance between the nozzle and the metal horn is 3 cm. The number is 4, the inner diameter of the nozzle i...

Embodiment 2

[0043] The preparation method of the flexible and wearable nanofiber fabric sensor of this embodiment, the steps are as follows:

[0044] (1) Dissolve polyvinylidene fluoride-hexafluoropropylene copolymer (P(VDF-HFP)) in a mixed solvent of N,N dimethylformamide (DMF) and tetrahydrofuran (mass ratio 1:1), Stir at 80°C for 6 h to obtain a P(VDF-HFP) solution with a mass fraction of 18%;

[0045] (2) Build the electrospinning device according to Figure 1, add the spinning solution in step (1) to the syringe pump to prepare continuous nanofiber yarn, the electrospinning voltage is 18 kV, and the total flow rate of the spinning solution is 0.6 mL / h, the diameter of the metal horn is 10 cm, the vertical distance between the metal horn and the winding device is 50 cm, the vertical distance between the nozzle and the metal horn is 4 cm, the horizontal distance between the nozzle and the metal horn is 3 cm, and the distance between the nozzle and the metal horn is 3 cm. The number is ...

Embodiment 3

[0054] The preparation method of the flexible and wearable nanofiber fabric sensor of this embodiment, the steps are as follows:

[0055] (1) Polyurethane (PU) was dissolved in a mixed solvent of N,N dimethylformamide (DMF) and tetrahydrofuran (mass ratio 1:1), and stirred at room temperature for 8 h to obtain a PU solution with a mass fraction of 12%. ;

[0056] (2) Build the electrospinning device according to Figure 1, add the spinning solution in step (1) to the syringe pump to prepare continuous nanofiber yarn, the electrospinning voltage is 20 kV, and the total flow rate of the spinning solution is 0.6 mL / h, the diameter of the metal horn is 10 cm, the vertical distance between the metal horn and the winding device is 50 cm, the vertical distance between the nozzle and the metal horn is 4 cm, the horizontal distance between the nozzle and the metal horn is 3 cm, and the distance between the nozzle and the metal horn is 3 cm. The number is 4, the inner diameter of the no...

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Abstract

The invention discloses a flexible wearable nano-fiber fabric sensor and a preparation method thereof. Continuous nano-fiber yarn is prepared through the conjugate electrostatic spinning yarn forming technology, and then the surfaces of fibers in the yarn are coated with a layer of conducting polymer in a polymerization mode. On the basis, the yarn is woven into fabric through a weaving method, the upper surface and the lower surface of the fabric are compounded with gel films with conducting copper wires, and the nano-fiber fabric sensor of a sandwich structure is obtained and is applied to wearable electronic skin. When the fabric sensor suffers from external force stimulation, the fabric sensor has good mechanical adaptability and shows superhigh sensitivity and wide sensing range. The sensor can achieve low pressure heart rate monitoring and high pressure limb motion monitoring in a human body monitoring system.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, relates to a flexible wearable nanofiber fabric sensor and a preparation method thereof, which are applied to a human health monitoring system, and specifically belong to the field of wearable electronic skin. Background technique [0002] Smart wearable health devices have led the medical trend in recent years, especially wearable medical devices, which play a decisive role in real-time monitoring of physical health and providing users with accurate and real-time body data. Flexibility, low cost, and low power consumption have become the focus of attention of wearable electronic devices. The wearable electronic skin, because it fits the human body, undoubtedly has obvious advantages in terms of wearing comfort and flexibility. Wearable electronic skin, a novel wearable flexible biomimetic tactile sensor, is a detection technology that can measure heart rate, blood pressure and pulse. ...

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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IPC IPC(8): A61B5/00
CPCA61B5/6802
Inventor 何建新邵伟力王利丹周玉嫚齐琨南楠佑晓露孙显强胡宝继卢凯崔世忠
Owner ZHONGYUAN ENGINEERING COLLEGE
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