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Preparation method of flexible pressure sensor based on silver-plated polyester

A pressure sensor and sensor technology, which is applied in the direction of instruments, measuring force, liquid chemical plating, etc., can solve the problems of heavy weight, contact sensitivity, and low sensitivity of the sensor, and achieve the effect of high sensitivity, low cost, and short response time

Active Publication Date: 2019-06-07
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for preparing a flexible pressure sensor based on silver-plated polyester, which overcomes the defects of the sensor such as heavy weight, poor flexibility, large hysteresis, low sensitivity, and sensitive contact with the skin. Can effectively monitor the movement of the human body

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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  • Preparation method of flexible pressure sensor based on silver-plated polyester
  • Preparation method of flexible pressure sensor based on silver-plated polyester
  • Preparation method of flexible pressure sensor based on silver-plated polyester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]Fabric roughening treatment: Sodium hydroxide 30g / L, bath ratio 50:1, soak the fabric in the treatment solution, 20°C, treat for 50min. Subsequently, the fabric was washed twice with water, neutralized with acetic acid (0.5g / L), washed with water, and dried in the air to be tested.

Embodiment 2

[0049] (1) Fabric roughening treatment

[0050] Sodium hydroxide 30g / L, bath ratio 50:1, soak the fabric in the treatment solution, 20°C, treat for 50min. The fabric was then washed twice with water, neutralized with acetic acid (0.5 g / L), washed with water, and dried in the air.

[0051] (2) In situ polymerization of aniline

[0052] Immerse the roughened fabric in 0.5 mol / L of nitric acid solution containing 0.25 mol / L of aniline monomer for 30 minutes to make it fully adsorb the aniline monomer, then add 0.3 mol / L of ammonium persulfate solution and stir evenly. Seal the reaction, polymerize for 2 hours, fully wash with water, wash with acetone, wash with distilled water, repeat several times, dry in the air, and wait for the test.

Embodiment 3

[0054] (1) Fabric roughening treatment

[0055] Sodium hydroxide 30g / L, bath ratio 50:1, soak the fabric in the treatment solution, 20°C, treat for 50min. The fabric was then washed twice with water, neutralized with acetic acid (0.5 g / L), washed with water, and dried in the air.

[0056] (2) In situ polymerization of aniline

[0057] Immerse the roughened fabric in 0.5 mol / L of nitric acid solution containing 0.25 mol / L of aniline monomer for 30 minutes to make it fully adsorb the aniline monomer, then add 0.3 mol / L of ammonium persulfate solution and stir evenly. Seal the reaction, polymerize for 2 hours, fully wash with water, wash with acetone, wash with distilled water, repeat several times, and dry in the air.

[0058] (3) activation

[0059] Take an appropriate amount of polymerized polyaniline composite fabric and seal and dip it in 2g / L silver nitrate solution for 5 hours, take it out, wash it with distilled water and ethanol, repeat several times, dry it, and wait...

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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Abstract

The invention relates to a preparation method of a flexible pressure sensor based on silver-plated polyester. Firstly, a polyester fabric is roughened, then conductive polymer polyaniline is polymerized in situ on the surface of the roughened polyester fabric to form a thin film, Ag+ can be reduced to Ag0 to serve as a catalytic center through the reduction performance of the polyaniline, and therefore subsequent electroless silver plating is caused. A silver-plated polyaniline fabric can serve as the novel, flexible and simple pressure sensor and generate various signals according to body movements. The flexible sensor is made of an electroless silver-plated polyaniline fabric, is suitable for various parts of the human body such as palms and foot soles, and can effectively monitor the movement conditions of the human body.

Description

technical field [0001] The invention belongs to the field of pressure sensor preparation, in particular to a method for preparing a flexible pressure sensor based on silver-plated polyester. Background technique [0002] Resistive pressure sensor is also a very mainstream pressure sensor principle at present. Its principle is to prepare flexible materials with pressure-sensitive characteristics, and output corresponding resistance changes under pressure to realize pressure sensing. Flexible force sensor is a kind of flexible device used to sense the force distribution on the surface, and has broad application prospects in the fields of robotics, biomechanics, and medical measurement. For example, attaching a flexible force-sensitive sensor to a robot finger can measure the clamping force on the finger; attaching it to an athlete's body can measure the muscle expansion and contraction characteristics of the athlete during exercise, and provide quantitative data for scientific...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83D06M15/61D06B3/10G01L1/22C23C18/44D06M101/32
Inventor 徐锐俞丹王炜
Owner DONGHUA UNIV
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