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Piezoelectric device and method for producing same

A technology for piezoelectric components and manufacturing methods, which is applied in the manufacturing/assembly of electrical components, piezoelectric/electrostrictive devices, rayon manufacturing, etc., can solve problems such as softness and poor impact resistance, and achieve piezoelectricity. , The effect of maintaining power generation performance and high-voltage electrical properties

Inactive Publication Date: 2019-07-09
NTN CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with organic piezoelectric materials, inorganic piezoelectric materials have excellent power generation performance, but poor flexibility and impact resistance

Method used

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  • Piezoelectric device and method for producing same
  • Piezoelectric device and method for producing same
  • Piezoelectric device and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～14 and comparative example 1～7

[0067] Regarding NKN particles used as piezoelectric ceramics, the Na 2 CO 3 (purity 99.9%), K 2 CO 3 (purity 99.9%), Nb 2 o 5 (Purity: 99.9%) As a raw material powder, this raw material powder was fully mixed, the mixture was sintered at 1098° C. for 2 hours, and then crushed to produce a powder with an average particle diameter of 1 μm. The powder was dispersed in a polyurethane solution as a polymer binder, and a granulated powder was produced by spray drying.

[0068] The granulated powder was dispersed in an aqueous solution in which 7% by mass of PVA was dissolved to prepare a slurry, and the slurry was tape-cast on a support to produce a polymer resin sheet. In the tape casting, a knife coater (manufactured by Imoto Seisakusho Co., Ltd.: IMC-70F0-C type) was used. The obtained sheet was dried at room temperature to remove water to obtain a polymer resin sheet.

[0069] The polymer nonwoven fabric was produced by electrospinning a slurry obtained by dispersing the...

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Abstract

Provided are: a piezoelectric device which can exhibit high power generation performance without compromising flexibility; and a method for producing the same. The piezoelectric device comprises a laminate (1) in which a polymer nonwoven fabric (3), in which piezoelectric ceramic particles (4) are held or mixed, and a polymer resin sheet (2), in which piezoelectric ceramic particles are mixed, arelaminated such that the laminate includes at least one layer of the polymer nonwoven fabric. This laminate can generate power in an amount equal to or greater than the amount of power that is generated from a laminate in which one layer of a polymer resin sheet is laminated on each of two main plane sides of one layer of a polymer nonwoven fabric.

Description

technical field [0001] The present invention relates to a piezoelectric element and a manufacturing method thereof, and particularly to a piezoelectric element suitable for vibration power generation using environmental vibration. Background technique [0002] In recent years, attention has been paid to environmental power generation that uses energy such as vibrations, sunlight, indoor light, and radio waves that exist around us to convert power, and its application to independent power supplies such as electronic equipment has been advancing. In environmental power generation, the power generation using vibration is called vibration power generation, and there are piezoelectric, electromagnetic induction, electrostatic induction and other methods. [0003] The piezoelectric method uses a piezoelectric element as a power generating element and utilizes the piezoelectric characteristics of the material, so it has the advantage of being simpler in structure compared to electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/113B32B5/24H01L41/083H01L41/18H01L41/37H02N2/18
CPCD01D5/003D01F1/10D01F6/12B29C43/203B32B5/16B32B2262/101B32B2262/0253B32B5/022B32B2262/0238B32B2260/046B32B2307/208B32B3/08B32B2262/0223B32B2457/00B32B2264/107B32B2255/04B32B2262/106B32B2264/105B32B2255/205B32B2250/42B32B2307/732B32B2260/025B32B2264/108B32B5/24H10N30/852H10N30/092B32B27/12B32B27/306B32B27/304H02N2/186H02N2/22B29C43/003D01D5/0007B29K2027/16B29K2031/04B29K2509/02B29K2995/0003B32B2307/20H10N30/30H10N30/045H10N30/50H10N30/057H10N30/877H10N30/702
Inventor 安田健早川康武大平晃也柿本健一
Owner NTN CORP