Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-sensitivity and wide-range composite conductive nanofiber aerogel sensor and preparation method thereof

A nanofiber, composite conductive technology, applied in the field of sensors, can solve the problems of low sensitivity and saturation, and achieve the effects of high sensitivity, simple overall process and convenient operation

Active Publication Date: 2021-05-07
WUHAN TEXTILE UNIV
View PDF10 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, a sensitive material typically only has high sensitivity within a certain pressure range, is less sensitive below this pressure range, and is less sensitive or saturated above this pressure range

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-sensitivity and wide-range composite conductive nanofiber aerogel sensor and preparation method thereof
  • High-sensitivity and wide-range composite conductive nanofiber aerogel sensor and preparation method thereof
  • High-sensitivity and wide-range composite conductive nanofiber aerogel sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides a composite conductive nanofiber airgel sensor with high sensitivity and wide range. The content of nanofibers in the nanofibrous aerogels decreased gradually from bottom to top.

[0048] A method for preparing a composite conductive nanofiber airgel sensor with high sensitivity and wide range comprises the following steps:

[0049] S1, dissolving polyvinyl alcohol-ethylene copolymer nanofibers (PVA-CO-PE) in the alcohol-water mixture to form thermoplastic polymer nanofibers with mass percent concentrations of 2%, 5%, 8%, and 10% respectively Suspension, then add PEDOT:PSS conductive material, glutaraldehyde cross-linking agent to make it mass percentage concentration be 6% respectively, mass percentage concentration be 1% HCl to make it mix uniformly and make airgel glue; The mass ratio of the alcohol to water is 5:5;

[0050] S2. The polyvinyl alcohol-ethylene copolymer nanofiber (PVA-CO-PE) mass percentage concentration of 10% airgel glue p...

Embodiment 2

[0060] This embodiment provides a composite conductive nanofiber airgel sensor with high sensitivity and wide range. The content of nanofibers in the nanofibrous aerogels decreased gradually from bottom to top.

[0061] A method for preparing a composite conductive nanofiber airgel sensor with high sensitivity and wide range comprises the following steps:

[0062] S1. Dissolving polyvinyl alcohol-ethylene copolymer nanofibers (PVA-CO-PE) in an alcohol-water mixture to form thermoplastic polymer nanofiber suspensions with mass percent concentrations of 2%, 5%, and 8%, respectively, Then add PEDOT:PSS conductive material, glutaraldehyde crosslinking agent to make it mass percent concentration be respectively 6%, mass percent concentration be 1% HCl to make it mix uniformly and make airgel glue; The mass ratio with water is 5:5;

[0063] S2. The polyvinyl alcohol-ethylene copolymer nanofiber (PVA-CO-PE) mass percentage concentration of 8% airgel glue prepared in step S1 is subj...

Embodiment 3

[0070] This embodiment provides a high-sensitivity and wide-range composite conductive nanofiber airgel sensor. The content of nanofibers in the nanofibrous aerogels decreased gradually from bottom to top.

[0071] A method for preparing a composite conductive nanofiber airgel sensor with high sensitivity and wide range comprises the following steps:

[0072] S1. Dissolving polyvinyl alcohol-ethylene copolymer nanofibers (PVA-CO-PE) in the alcohol-water mixture to form thermoplastic polymer nanofiber suspensions with mass percent concentrations of 2% and 5% respectively, and then adding PEDOT:PSS conductive material, glutaraldehyde crosslinking agent make it mass percentage concentration be respectively 6%, mass percentage concentration be 1% HCl make it mix uniformly and make airgel glue; The alcohol and water The mass ratio is 5:5;

[0073] S2. The polyvinyl alcohol-ethylene copolymer nanofiber (PVA-CO-PE) mass percentage concentration of 5% airgel glue prepared in step S1...

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
Login to View More

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-sensitivity and wide-range composite conductive nanofiber aerogel sensor and a preparation method thereof, thermoplastic polymer nanofiber and a conductive material are used as raw materials, the dosage ratio of the thermoplastic polymer nanofiber and the conductive material is reasonably controlled, and a nanofiber aerogel material with a three-dimensional structure is prepared by a freeze drying method; the low density, high softness, high conductivity and reversible compressibility of the aerogel material are utilized, so that different composite conductive nanofiber aerogels with high sensitivity in different pressure ranges are combined, and high-sensitivity detection of the composite conductive nanofiber aerogels at all levels on the pressure in different force value ranges is realized; through ingenious multi-stage composite conductive nanofiber aerogel structure distribution, the full-scale high sensitivity of the sensor in a range from small pressure to large pressure is realized, the wide scale is realized, the contradiction between the sensitivity and the range is solved, the performance of the sensor is greatly improved, and the application scene of the sensor is enriched.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a high-sensitivity and wide-range composite conductive nanofiber airgel sensor and a preparation method thereof. Background technique [0002] Sensitivity and range are two important performance parameters of the sensor, and the two are generally in an opposing relationship that restricts each other, which cannot meet people's comprehensive needs for these two aspects in many occasions. "Effect of magneto-strain linkage on the piezoresistive effect of magnetorheological elastomers". Journal of Composite Materials. 2017 (9) and "Piezo-capacitive behavior of magnetically structured particles based conductive polymer with high sensitivity and wide working range". Journal ofMaterials Chemistry C, 2018, 6(20) and other documents pointed out that a conductive rubber filled with magnetic metal particles can be controlled by applying a magnetic field during the molding process to control...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/18
CPCG01L1/18
Inventor 王栋刘志豪蒋海青钟卫兵丁新城柯弈名
Owner WUHAN TEXTILE UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com