Unlock instant, AI-driven research and patent intelligence for your innovation.

Flexible pressure sensor and preparation method thereof

A pressure sensor, flexible technology, applied in the direction of instruments, measuring force, measuring devices, etc., can solve the problems of limited stretchability, poor filler-polymer interaction, etc., and achieve good sensitivity and sensing stability, fast response, The effect of good recognition

Active Publication Date: 2019-12-13
ZHENGZHOU UNIVERSITY OF AERONAUTICS
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned CPC sensors also suffer from the disadvantages of limited stretchability of the matrix and poor filler-polymer interaction, so how to choose a suitable polymer matrix with satisfactory stretchability and excellent processability has important implications for pressure sensing. important meaning

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
  • Flexible pressure sensor and preparation method thereof
  • Flexible pressure sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A preparation method of a flexible pressure sensor, the steps are as follows:

[0019] (1) According to weight percentage, weigh raw materials: polyether block amide (PEBAX) 99.5%, graphene 0.5%;

[0020] (2) Add polyether block amide and graphene into the mixing chamber of the XSS-330 torque rheometer, and mix for 6 minutes at a mixing temperature of 175°C and a rotation speed of 80 rpm;

[0021] (3) The mixed sample was preheated at 175 °C for 10 minutes on the template of the LN-50T plate vulcanizer, and then the sample was vulcanized at a pressure of 15 MPa for 4 minutes to obtain a flexible pressure sensor.

Embodiment 2

[0023] The difference from Example 1 is that the ratio of raw materials is: polyether block amide (PEBAX) 98%, graphene 2%; others are the same as Example 1.

Embodiment 3

[0025] The difference from Example 1 is that the ratio of raw materials is: polyether block amide (PEBAX) 95%, graphene 5%; others are the same as Example 1.

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

No PUM Login to View More

Abstract

The invention belongs to the technical field of flexible conductive macromolecule pressure sensors, and discloses a flexible pressure sensor and a preparation method thereof. The preparation method comprises the following steps of weighing 80-99.99% of polyether block amide and 0.01-20% of graphene in percentage by weight; adding the polyether block amide and the graphene into a mixing chamber ofa torque rheometer to carry out mixing for 5-10 min under the conditions that the temperature is 140-180 DEG C and the revolving speed is 60-80 rpm; and preheating the mixed sample on a template of apress vulcanizer at 140-180 DEG C for 10-15 min, and vulcanizing the sample at 10-15 MPa for at least 4 min after the preheating so as to obtain the flexible pressure sensor. The prepared flexible pressure sensor has favorable sensitivity and sensing stability, has favorable restorability and reproducibility after being stabilized via cyclic loading, and expresses favorable recognizability in pressure sensing.

Description

technical field [0001] The invention belongs to the technical field of flexible conductive polymer pressure sensors, and in particular relates to a flexible pressure sensor and a preparation method thereof. Background technique [0002] Pressure sensors based on changes in electrical resistance when exposed to mechanical deformation have attracted much attention due to their wide range of applications, including health monitoring and motion detection. High sensitivity, good reproducibility, and good processability are necessary for satisfactory pressure sensing. Recently, CPC-based sensors have been extensively studied due to their fast response to electrical resistance changes when exposed to tensile or compressive strain. Generally, CPC-based sensors always exhibit a positive voltage coefficient (PPC) resistance effect, that is, the resistance of CPC increases with the increase of external stimulus pressure. For example, thermoplastic polyurethane (TPU) / graphene, epoxy / C...

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): G01L1/22
CPCG01L1/22
Inventor 赵彪邓久帅张茜郭晓琴白中义张锐任玉美樊磊关莉
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS