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A kind of soft and breathable electrode film material, tactile sensor and preparation method thereof

A tactile sensor and film technology, applied in the direction of material analysis, material analysis, instruments, etc. by electromagnetic means, can solve problems such as being unsuitable for medical treatment, clothing and human health monitoring, hard texture, non-breathable, etc. Commercial application, the effect of excellent tactile sensitivity performance

Active Publication Date: 2017-05-03
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two main types of existing tactile sensors: (1) Sensors based on inorganic materials such as piezoelectric ceramic materials. Devices based on such materials are bulky and hard, and are not suitable for applications in medical care, clothing and human health monitoring.
(2) Based on the piezoelectric polymer material plastic film prepared by the traditional process, the device of this kind of material improves the defects of the inorganic piezoelectric material, has a certain flexibility and reduces its weight, but it does not have gas permeability, and The preparation process is complex and requires an external strong electric field polarization
In addition, it is easy to deform and damage under external force, so it is difficult to apply to medical treatment, clothing and human health monitoring applications

Method used

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  • A kind of soft and breathable electrode film material, tactile sensor and preparation method thereof
  • A kind of soft and breathable electrode film material, tactile sensor and preparation method thereof
  • A kind of soft and breathable electrode film material, tactile sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Add 10mL of dimethylformamide and acetone mixture solvent with a mass ratio of 2:3 to a 20mL weighing bottle, then add 0.15g of PVDF powder, stir and dissolve to prepare a PVDF electrospinning solution with a concentration of 0.15g / mL solution, and the prepared PVDF electrospinning solution is placed in the liquid storage chamber of one injector of the multi-nozzle electrospinning device, and the injector is placed in figure 1 side a shown in . At the same time, in a 100 mL round-bottomed flask, prepare a 5 mg / mL graphene oxide electrospinning solution by dissolving 0.25 g of the prepared graphene oxide in 50 mL of water, and place it in the liquid storage chamber of the injector of the multi-nozzle electrospinning device and place 3 of these injectors in figure 1 Side b shown in.

[0082] Set the voltage and flow rate of sides a and b at the same time: set the output voltage of the high-voltage power supply on side a to 12kV, set the advancing speed of the PVDF elect...

Embodiment 2

[0090] The process is the same as in Example 1, except that the injectors of 2 graphene oxide electrospinning solutions are placed as figure 1 side b shown. A soft air-permeable tactile sensor with a three-layer structure was obtained, and after testing, the square resistance of the electrode of the device was 3000Ω / □, the gas permeability was 3mm / s; the sensitivity of the device was 27pC / (N.cm 2 ).

Embodiment 3

[0092] The process is the same as in Example 1, except that the injector of 1 graphene oxide electrospinning solution is placed as figure 1 side b shown. A soft air-permeable tactile sensor with a three-layer structure is obtained, and the square resistance of the device electrode is 35000Ω / □, the gas permeability is 10mm / s; the sensitivity of the device is 17pC / (N.cm 2 ).

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Abstract

The invention provides soft ventilating electrode thin film material, a touch sensor and a preparation method for the touch sensor. More concretely, the electrode thin film material is a composite film formed by high-molecular nanometer fibers and grapheme via an electrospinning technology; the touch sensor is a composite film structure formed by the following three thin films via the electrospinning technology, including a first thin film layer, namely the composite film formed by high-molecular nanometer fibers and grapheme, a second thin film layer, namely a high-molecular nanometer fiber film and a third thin film layer, namely a composite film formed by the high-molecular nanometer fiber. The touch sensor preparation method is simple and the touch sensor possesses stable performance; the touch sensor is suitable for medical detection and biological probe related to human bodies; and large scale production can be achieved by the use of the preparation method and commercialized application can be facilitated.

Description

technical field [0001] The invention relates to a novel soft and breathable electrode film material, a touch sensor and a preparation method thereof. Background technique [0002] A sensor is a device or device that can sense the measured information and convert the information into a required form of output signal (electrical signal) according to certain rules. The sensor converts the measured information into electrical signal output to realize the perception, transmission and processing of information, which is the basic element to realize automatic detection and automatic control of information. Among them, the tactile sensor is the most common one, which is used to detect mechanical movements such as pressure, deformation and vibration. There are two main types of existing tactile sensors: (1) Sensors based on inorganic materials such as piezoelectric ceramic materials. Devices based on such materials are bulky and hard, and are not suitable for applications in medical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4382D04H1/728D01D5/00G01N27/00
Inventor 徐春叶李保章郑建明
Owner UNIV OF SCI & TECH OF CHINA