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Improved polymer phase-based 1-3 type piezoelectric composite material and preparation method therefor

A piezoelectric composite material and polymer technology, which can be used in the material selection of piezoelectric devices or electrostrictive devices, the manufacture/assembly of piezoelectric/electrostrictive devices, and the selection of device materials, which can solve the production process. Complexity, poor mechanical stability and other problems, to achieve the effect of significant performance improvement, high electromechanical conversion efficiency, and improved electromechanical coupling coefficient

Active Publication Date: 2017-09-15
BEIJING INFORMATION SCI & TECH UNIV
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Problems solved by technology

However, these existing technologies have disadvantages such as complicated production process and poor mechanical stability.

Method used

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  • Improved polymer phase-based 1-3 type piezoelectric composite material and preparation method therefor
  • Improved polymer phase-based 1-3 type piezoelectric composite material and preparation method therefor
  • Improved polymer phase-based 1-3 type piezoelectric composite material and preparation method therefor

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Embodiment Construction

[0037] The present invention will be described in further detail below through specific embodiments and accompanying drawings.

[0038] The improved 1-3 type piezoelectric composite material of this embodiment improves the polymer phase material by adopting a sandwich structure composed of epoxy resin and silicone rubber, so as to reduce the 1-3 type piezoelectric composite material. The influence of the polymer relative to the vibration of the piezoelectric phase, and the application of finite element simulation and experimental methods to analyze the electromechanical properties of this new piezoelectric composite material.

[0039] 1. Structure of Type 1-3 Piezoelectric Composites with Improved Polymer Phase

[0040] figure 1 Schematic diagram of the structure of the 1-3 type piezoelectric composite material for improving the polymer phase, which consists of periodically arranged piezoelectric ceramic column arrays and a polymer phase with a sandwich structure. The polyme...

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Abstract

The invention relates to an improved polymer phase-based 1-3 type piezoelectric composite material and a preparation method therefor. According to the piezoelectric composite material, a sandwich type structure which is formed by epoxy resin, silicone rubber and other polymer is adopted to improve the polymer phase material to reduce influence to piezoelectric column vibration and to further improve the overall electromechanical coupling coefficient of the composite material. By adoption of a finite element analysis tool, the changing relation of resonant frequency, sound velocity, electromechanical coupling coefficient and characteristic impedance of the novel piezoelectric composite material along with volume percentages of silicone rubber is simulated; the piezoelectric composite material is prepared according to the simulation result and the performance of the material is tested; the test result proves that the experiment is basically matched with simulation; the electromechanical coupling coefficient of the composite material is improved by 11% compared with that of the conventional 1-3 type composite material; and the improved polymer phase-based 1-3 type piezoelectric composite material provided by the invention is quite suitable for manufacturing a piezoelectric composite material transducer with high electromechanical conversion efficiency.

Description

technical field [0001] The invention belongs to the technical field of piezoelectric composite materials, and in particular relates to a 1-3 type piezoelectric composite material based on an improved polymer phase and a preparation method thereof. Background technique [0002] 1-3 Piezoelectric composite material is a piezoelectric composite material composed of two-phase materials formed by periodically distributing one-dimensionally connected piezoelectric phases in three-dimensionally connected polymer phases. Due to its high thickness electromechanical coupling coefficient, low mechanical quality factor and acoustic impedance, it has been widely studied and used in underwater acoustic transducers, ultrasonic detection, biomedical imaging and other fields. [0003] Rouffaud et al. (Rouffaud R, Levassort F, Pham T M, et al. Super-Cell Piezoelectric Composite With 1-3 Connectivity. [J]. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2016, 63(12): 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/18H01L41/187H01L41/193H01L41/37H10N30/85H10N30/092H10N30/853H10N30/857
CPCH10N30/852H10N30/853H10N30/857H10N30/092
Inventor 秦雷张彦军仲超王丽坤
Owner BEIJING INFORMATION SCI & TECH UNIV
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