Cascade and parallel piezoelectric composite material and preparing method thereof

A piezoelectric composite material and parallel technology, which is applied in the manufacture/assembly of piezoelectric/electrostrictive devices, and the selection of device materials, etc., can solve the problem that the mechanical flexibility of two-phase materials is greatly different, the electrode preparation is not easy to flatten, and the mechanical vibration Impact and other issues, to achieve the effect of simplifying the electrode manufacturing process, low density, and improving the ability of heat resistance and mechanical shock

Inactive Publication Date: 2005-02-23
BEIJING INFORMATION TECH INST
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  • Abstract
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Problems solved by technology

At present, the piezoelectric crystals of series or parallel piezoelectric composite materials are separated in the horizontal or vertical direction, and they are only bonded together with epoxy resin, which is easily affected by pressure, mechanical vibration shock and

Method used

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  • Cascade and parallel piezoelectric composite material and preparing method thereof
  • Cascade and parallel piezoelectric composite material and preparing method thereof
  • Cascade and parallel piezoelectric composite material and preparing method thereof

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[0030] reference image 3 , 1-3 type and 2-2 type are piezoelectric composite materials with parallel structure, 2-2 type piezoelectric composite material piezoelectric crystal skeleton 1 is a parallel array of several piezoelectric crystal pieces, 1-3 type piezoelectric composite The piezoelectric crystal skeleton 1 of the material is a parallel array of several piezoelectric crystal columns, which form alternating strips with the epoxy resin 2 and are parallel to the polarization direction. reference Figure 4 The series-parallel piezoelectric composite material of the present invention includes: one of the piezoelectric composite materials in parallel-1-3 type piezoelectric composite material 6, a piezoelectric crystal substrate 5 and metal electrodes 3, 4, the piezoelectric crystal substrate 5 is a piezoelectric composite material. Electroceramics, 1-3 piezoelectric composite material 6 is composed of piezoelectric ceramics and epoxy resin, 1-3 piezoelectric composite material...

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Abstract

The complex piezoelectric material is composed of the parallel-connected complex material, the piezoelectric crystal base plate, the upper and lower electrodes. The parallel connection piezoelectric material is composed of the piezoelectric crystal skeleton and the epoxy resin, the parallel-connected piezoelectric complex material is fixed on the piezoelectric crystal base plate. The parallel-connected piezoelectric complex materials is connected with the crystal base plate. The series-parallel connection combination is supported by the ceramics skeleton with the property of parallel connected and series connected piezoelectric complex material.

Description

technical field [0001] The invention belongs to the technical field of functional materials and their preparation, and in particular relates to a series-parallel piezoelectric composite material for underwater acoustic, ultrasonic and medical transducers and a preparation method thereof. Background technique [0002] Piezoelectric composite materials are materials with piezoelectric effect, which can realize mutual conversion between mechanical energy and electrical energy. Piezoelectric composite materials refer to materials composed of piezoelectric crystals and polymers according to a certain connection mode, a certain volume and weight ratio, and a certain spatial geometric distribution. It not only has the strong piezoelectric properties of piezoelectric crystals, but also has the characteristics of polymer flexibility, low impedance, and easy matching with air and water. It is a new type of material with the advantages of two-phase materials. [0003] Piezoelectric co...

Claims

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Application Information

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IPC IPC(8): H01L41/16H01L41/37
Inventor 李光王丽坤栾桂冬张金铎张福学唐劲松岳军
Owner BEIJING INFORMATION TECH INST
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