Supercharge Your Innovation With Domain-Expert AI Agents!

Piezoelectric composite film, preparation method thereof and piezoelectric sensor

A piezoelectric composite, conductive film technology, applied to piezoelectric/electrostrictive/magnetostrictive devices, material selection for piezoelectric devices or electrostrictive devices, fabrication/assembly of piezoelectric/electrostrictive devices Equal orientation can solve the problems of irregular fiber orientation and low piezoelectric performance of piezoelectric composite films, and achieve the effects of large freedom of movement, improved piezoelectric performance, and high windability

Inactive Publication Date: 2020-12-04
NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In piezoelectric composite film materials, type 1-3 piezoelectric composite films can improve the polarization performance of the ceramic phase in the composite system, and the improvement of the polarization performance can improve the piezoelectric performance of the piezoelectric composite film, but most The PZT (lead zirconate titanate piezoelectric ceramic) fiber orientation in the 1-3 type piezoelectric composite film is irregular, it is difficult to fully polarize the PZT fiber, and the piezoelectric performance of the piezoelectric composite film is still relatively low

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
  • Piezoelectric composite film, preparation method thereof and piezoelectric sensor
  • Piezoelectric composite film, preparation method thereof and piezoelectric sensor
  • Piezoelectric composite film, preparation method thereof and piezoelectric sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] see figure 1 as shown, figure 1 It is a schematic diagram of the laminated structure of the piezoelectric composite thin film of the present invention. Specifically, the piezoelectric composite film of the present invention includes a piezoelectric polymer body 20 , PZT fibers 10 , a first electrode layer 30 and a second electrode layer 40 .

[0060] Wherein, the piezoelectric polymer body 20 includes a first surface 21 and a second surface 22 opposite to the first surface 21; the PZT fiber 10 is at least two sections, and the PZT fiber 10 is distributed in the piezoelectric polymer body 20, and the above-mentioned The orientation of at least two sections of PZT fibers 10 is consistent, and each section of PZT fibers 10 extends from the first surface 21 to the second surface 22; the first electrode layer 30 is laid on the first surface and contacts the PZT fibers 10; the second electrode layer 40 Lay on the second surface and contact with PZT fiber 10.

[0061] The p...

Embodiment 2

[0068] According to an embodiment of the present invention, a piezoelectric sensor is provided, and the piezoelectric sensor in this embodiment is prepared by using the piezoelectric composite film in Embodiment 1.

Embodiment 3

[0070] see figure 2 as shown, figure 2 It is a flowchart of the preparation method of the piezoelectric composite thin film of the present invention. The preparation method of the piezoelectric composite film is used to prepare the piezoelectric composite film described in the first embodiment or the second embodiment.

[0071] Specifically, the preparation method of the piezoelectric composite film in this embodiment includes the following steps:

[0072] 301: Prepare the PZT fiber 10, and crystallize the PZT fiber 10 into a phase. see image 3 As shown, the specific operation process of this step is as follows:

[0073] 3011: Prepare PZT fibers 10 with an inner diameter of 300nm-800nm ​​and a length of 2μm-6μm.

[0074] In this embodiment, the electrospinning method is used to prepare PZT fibers 10. This electrospinning method is a special form of electrostatic atomization of polymer fluids. The material solution or melt can be jet-spun in a strong electric field, wh...

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
The inside diameter ofaaaaaaaaaa
Lengthaaaaaaaaaa
Lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of induction devices, and particularly discloses a piezoelectric composite film, a preparation method thereof and a piezoelectric sensor. The preparation method of the piezoelectric composite film comprises the following steps of preparing PZT fibers, and crystallizing the PZT fibers into a phase; compounding the PZT fibers which are crystallized into the phase with a piezoelectric polymer according to a mass ratio of 1: 10 to 1: 20, and uniformly stirring the PZT fibers and the piezoelectric polymer to form slurry; preparing the slurry into a piezoelectric block with PZT fibers in consistent orientation by utilizing dielectrophoretic force; and polarizing the piezoelectric block to prepare the piezoelectric composite film. The piezoelectric composite film has PZT fibers with consistent orientation, and the PZT fibers penetrate through the piezoelectric polymer main body and can be in direct contact with a first electrode layer and a secondelectrode layer, so that the PZT fibers in the piezoelectric composite film can be polarized to the greatest extent, and the piezoelectric property of the piezoelectric composite film is improved.

Description

technical field [0001] The invention relates to the technical field of sensing devices, in particular to a piezoelectric composite film, a preparation method thereof, and a piezoelectric sensor. Background technique [0002] The main component of the transparent piezoelectric sensor is a transparent piezoelectric composite film. In piezoelectric composite film materials, type 1-3 piezoelectric composite films can improve the polarization performance of the ceramic phase in the composite system, and the improvement of the polarization performance can improve the piezoelectric performance of the piezoelectric composite film, but most The PZT (lead zirconate titanate piezoelectric ceramic) fiber orientation in the 1-3 piezoelectric composite film is irregular, it is difficult to fully polarize the PZT fiber, and the piezoelectric performance of the piezoelectric composite film is still relatively low. Contents of the invention [0003] The invention discloses a piezoelectric...

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
IPC IPC(8): H01L41/37H01L41/257H01L41/18
CPCH10N30/852H10N30/045H10N30/092
Inventor 向远方
Owner NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com