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Fabric substrate piezoelectric sensor based on zinc oxide nanorod structures and preparation method of fabric substrate piezoelectric sensor

A technology of zinc oxide nanorods and piezoelectric sensors, applied in chemical instruments and methods, sensors, nanotechnology for sensing, etc., can solve the problems of low sensitivity, complicated preparation process, and low recognition, and achieve high sensitivity , excellent gas permeability, low monitoring limit effect

Active Publication Date: 2021-04-02
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although fabric electrodes and sensors with piezoelectric effect can be prepared on fabrics by combining piezoelectric materials with fabric substrates, they are applied to the actual wearable field to monitor human body information such as the monitoring of finger posture changes, wrist movement monitoring, etc. There are some problems: the output voltage of the fabric substrate piezoelectric sensor is unstable, the sensitivity is low, the preparation process is complicated, and the recognition degree is low

Method used

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  • Fabric substrate piezoelectric sensor based on zinc oxide nanorod structures and preparation method of fabric substrate piezoelectric sensor
  • Fabric substrate piezoelectric sensor based on zinc oxide nanorod structures and preparation method of fabric substrate piezoelectric sensor
  • Fabric substrate piezoelectric sensor based on zinc oxide nanorod structures and preparation method of fabric substrate piezoelectric sensor

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Experimental program
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Effect test

Embodiment 1

[0028] 1. Preparation of highly conductive textile electrodes

[0029]Perform plasma treatment on the surface of the polyester fabric, the treatment atmosphere is oxygen, the treatment power is 400w, and the treatment time is 120s, then take 100mL deionized water, add 0.5g stannous chloride and 0.1mL hydrochloric acid with a mass concentration of 30%, respectively, A mixed solution containing stannous chloride and hydrochloric acid was prepared, and the treated polyester fabric was immersed in the mixed solution for 2 hours at a temperature of 80°C; then 0.3g of graphene oxide powder was ultrasonically treated and dispersed in 100mL of Prepare a 3 mg / mL graphene oxide solution in deionized water for 30 minutes, rinse with deionized water to remove impurities, and continue to immerse the polyester fabric in the graphene oxide solution at a temperature of 25°C for 0.25 hours. After repeated immersion for 3 times drying; finally, the dried polyester fabric was reduced with 5 g / L ...

Embodiment 2

[0037] 1. Preparation of highly conductive textile electrodes

[0038] Perform plasma treatment on the surface of polyester fabric, the treatment atmosphere is oxygen, the treatment power is 400w, and the treatment time is 120s, then take 100mL deionized water, add 1g stannous chloride and 0.2mL hydrochloric acid with a mass concentration of 32% respectively, and prepare A mixed solution containing stannous chloride and hydrochloric acid was obtained, and the treated polyester fabric was immersed in the mixed solution for 1h at a temperature of 70°C; then 0.2g of graphene oxide powder was ultrasonically treated and dispersed in 100mL of Prepare a 2 mg / mL graphene oxide solution in deionized water for 30 minutes, rinse with deionized water to remove impurities, continue to immerse the polyester fabric in the graphene oxide solution, immerse at a temperature of 20 °C for 0.35 h, repeat the immersion 5 times, and then bake Drying; finally, the dried polyester fabric was reduced w...

Embodiment 3

[0046] 1. Preparation of highly conductive textile electrodes

[0047] Perform plasma treatment on the surface of the polyester fabric, the treatment atmosphere is oxygen, the treatment power is 400w, and the treatment time is 120s, then take 100mL deionized water, add 1.5g stannous chloride and 0.3mL hydrochloric acid with a mass concentration of 36%, respectively, A mixed solution containing stannous chloride and hydrochloric acid was prepared, and the treated polyester fabric was immersed in the mixed solution for 3 hours at a temperature of 90°C; then 0.5g of graphene oxide powder was ultrasonically treated and dispersed in 100mL of Prepare a 5 mg / mL graphene oxide solution in deionized water for 30 minutes, rinse with deionized water to remove impurities, and continue to immerse the polyester fabric in the graphene oxide solution at a temperature of 30°C for 0.4 hours, and repeat the immersion 3 times drying; finally, the dried polyester fabric was reduced with 10 g / L L-a...

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Abstract

The invention discloses a fabric substrate piezoelectric sensor based on zinc oxide nanorod structures and a preparation method of the fabric substrate piezoelectric sensor. The piezoelectric sensor comprises a polyvinylidene fluoride film serving as a middle layer and polyester fabric electrodes which are arranged on the two sides of the polyvinylidene fluoride film and serve as an upper layer and a lower layer; and a layer of zinc oxide nanorod with a piezoelectric effect is grown on each polyester fabric electrode. The polyester fabric electrodes, on which the zinc oxide nanorods are grownthrough a two-step low-temperature hydrothermal method, serve as the upper layer and the lower layer of the sensor; and meanwhile, the polyvinylidene fluoride film with the piezoelectric effect is introduced into the middle layer of the sensor. The fabric-based piezoelectric sensor can generate the piezoelectric effect under the action of an external force to convert external mechanical energy into electric energy, can be used for monitoring gesture changes and sensing different position information of a human body, and has great significance to detection of human body information.

Description

technical field [0001] The invention belongs to a functional nanometer material sensor, in particular to a fabric substrate piezoelectric sensor based on a zinc oxide nanorod structure and a preparation method thereof. Background technique [0002] With the rapid development of smart wearable technology, people have put forward higher requirements for highly flexible, comfortable and lightweight smart monitoring equipment, so smart wearable devices based on fabric textiles have been loved by more and more people. . Along with the global energy consumption crisis, seeking for renewable and green resources has become an urgent problem to be solved for sustainable development. At the same time, the existing power supply equipment is large in size and short in life, which affects its application in wearable devices. Therefore, being able to convert various forms of environmental mechanical energy into electrical energy for self-power supply provides a feasible solution for wea...

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): A61B5/11B32B27/02B32B27/30B32B27/12B32B3/08B32B37/02B32B38/18B32B37/24B32B27/04B32B27/36B32B33/00G01L1/16B82Y15/00B82Y30/00B82Y40/00
CPCA61B5/1126B32B5/02B32B27/304B32B27/12B32B3/08B32B37/02B32B38/1808B32B37/24B32B33/00G01L1/16B82Y15/00B82Y30/00B82Y40/00B32B2037/243B32B2250/40B32B2250/03B32B2262/0284B32B2457/00B32B2260/04B32B2260/021
Inventor 王潮霞殷允杰谭永松
Owner JIANGNAN UNIV
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