JPS56111281A - High molecular piezoelectric body and manufacture thereof - Google Patents

High molecular piezoelectric body and manufacture thereof

Info

Publication number
JPS56111281A
JPS56111281A JP1383980A JP1383980A JPS56111281A JP S56111281 A JPS56111281 A JP S56111281A JP 1383980 A JP1383980 A JP 1383980A JP 1383980 A JP1383980 A JP 1383980A JP S56111281 A JPS56111281 A JP S56111281A
Authority
JP
Japan
Prior art keywords
prescribed
temperature
high molecular
piezoelectric body
processing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1383980A
Other languages
Japanese (ja)
Inventor
Koji Daito
Keiko Koga
Toshiharu Nakanishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP1383980A priority Critical patent/JPS56111281A/en
Priority to AU66933/81A priority patent/AU544447B2/en
Priority to EP81100836A priority patent/EP0037877B1/en
Priority to DE8181100836T priority patent/DE3166101D1/en
Priority to CA000370378A priority patent/CA1183595A/en
Publication of JPS56111281A publication Critical patent/JPS56111281A/en
Priority to US06/510,687 priority patent/US4578442A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials
    • H10N30/857—Macromolecular compositions

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To obtain the high molecular piezoelectric body having large thickness piezoelectricity by prescribing processing temperature by using a copolymer of vinylidene fluoride and ethylene trifluoride, whose mol% is prescribed respectively, and thereby increasing an electromechanical connection coefficient. CONSTITUTION:The high molecular piezoelectric body is prepared by using the copolymer of vinylidene fluoride of 65-95mol% and ethylene trifluoride of 35- 5mol% or a polymer composition whose main constituents are these materials. At this time, the value of the electromechanical connection coefficient of the polymer is first prescribed to be 0.05 or more, while the processing temperature is also prescribed to be [crystal dislocation temperature -5 deg.C]-[melting-point temperature]. Next, poling processing is applied for one hour under the condition that the temperature is prescribed to be 80-140 deg.C and that poling voltage to be 200- 300kV/cm. In this way, the value of the connection coefficient is increased to around 0.3 through the poling processing the thus the large thickness piezoelectricity can be obtained.
JP1383980A 1980-02-07 1980-02-07 High molecular piezoelectric body and manufacture thereof Pending JPS56111281A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP1383980A JPS56111281A (en) 1980-02-07 1980-02-07 High molecular piezoelectric body and manufacture thereof
AU66933/81A AU544447B2 (en) 1980-02-07 1981-02-05 Vinylidene fluoride and ethylene trifluoride copolymer
EP81100836A EP0037877B1 (en) 1980-02-07 1981-02-05 Piezoelectric polymer material, process for producing the same and an ultrasonic transducer utilizing the same
DE8181100836T DE3166101D1 (en) 1980-02-07 1981-02-05 Piezoelectric polymer material, process for producing the same and an ultrasonic transducer utilizing the same
CA000370378A CA1183595A (en) 1980-02-07 1981-02-06 Piezoelectric polymer material, a process for producing the same and an ultrasonic transducer utilized the same
US06/510,687 US4578442A (en) 1980-02-07 1983-07-05 Piezoelectric polymeric material, a process for producing the same and an ultrasonic transducer utilizing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1383980A JPS56111281A (en) 1980-02-07 1980-02-07 High molecular piezoelectric body and manufacture thereof

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP60246841A Division JPS61245586A (en) 1985-11-02 1985-11-02 Manufacture of high-molecular piezoelectric body

Publications (1)

Publication Number Publication Date
JPS56111281A true JPS56111281A (en) 1981-09-02

Family

ID=11844440

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1383980A Pending JPS56111281A (en) 1980-02-07 1980-02-07 High molecular piezoelectric body and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS56111281A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047034A (en) * 1983-08-24 1985-03-14 Kureha Chem Ind Co Ltd Production of piezoelectric vinylidene fluoride copolymer film
JPH0836917A (en) * 1994-07-26 1996-02-06 Yamagata Univ Ferroelectric polymer single crystal, method of its manufacture, and piezoelectric element, pyroelectric element and nonlinear optical element using the method
US20110021917A1 (en) * 2008-07-22 2011-01-27 Konica Minolta Medical & Graphic, Inc. Organic piezoelectric material film, method for production of the same, method for production of ultrasonic oscillator using the same, and ultrasonic medical imaging instrument

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047034A (en) * 1983-08-24 1985-03-14 Kureha Chem Ind Co Ltd Production of piezoelectric vinylidene fluoride copolymer film
JPH051636B2 (en) * 1983-08-24 1993-01-08 Kureha Chemical Ind Co Ltd
JPH0836917A (en) * 1994-07-26 1996-02-06 Yamagata Univ Ferroelectric polymer single crystal, method of its manufacture, and piezoelectric element, pyroelectric element and nonlinear optical element using the method
US20110021917A1 (en) * 2008-07-22 2011-01-27 Konica Minolta Medical & Graphic, Inc. Organic piezoelectric material film, method for production of the same, method for production of ultrasonic oscillator using the same, and ultrasonic medical imaging instrument

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