Three-layer piezoelectrets from fluorinated ethylene-propylene (FEP) copolymer films

被引：31

作者：

Fang, Peng ^{[1
]}

Wang, Feipeng ^{[1
]}

Wirges, Werner ^{[1
]}

Gerhard, Reimund ^{[1
]}

Basso, Heitor Cury ^{[2
]}

机构：

[1] Univ Potsdam, Inst Phys & Astron, Fac Sci, D-14476 Potsdam, Germany

[2] Univ Sao Paulo, Dept Elect Engn, Sao Carlos Sch Engn, BR-13566590 Sao Carlos, SP, Brazil

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2011年 / 103卷 / 02期

关键词：

FERROELECTRETS; POLYMER; CHARGE; SOFT;

D O I：

10.1007/s00339-010-6008-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A process for preparing three-layer piezoelectrets from fluorinated ethylene-propylene (FEP) copolymer films is introduced. Samples are made from commercial FEP films by means of laser cutting, laser bonding, electrode evaporation, and high-field poling. The observed dielectric-resonance spectra demonstrate the piezoelectricity of the FEP sandwiches. Piezoelectric d (33) coefficients up to a few hundred pC/N are achieved. Charging at elevated temperatures can increase the thermal stability of the piezoelectrets. Isothermal experiments for approximately 15 min demonstrate that samples charged at 140A degrees C keep their piezoelectric activity up to at least 120A degrees C and retain 70% of their initial d (33) even at 130A degrees C. Acoustical measurements show a relatively flat frequency response in the range between 300 Hz and 20 kHz.

引用

页码：455 / 461

页数：7

共 29 条

[1]

[Anonymous], P 10 IEEE INT S EL D

[2]

[Anonymous], P ANN REP C EL INS D

[3]

[Anonymous], SMART MATER STRUCT

[4]

[Anonymous], DUP FEP INF B

[5]

[Anonymous], IEEE T DIELECTR ELEC

[6]

[Anonymous], UNPUB

[7] Ferroelectrets: Soft electroactive foams for transducers [J].

Bauer, S ;

Gerhard-Multhaupt, R ;

Sessler, GM .

PHYSICS TODAY, 2004, 57 (02) :37-43

[8] Generation and detection of broadband airborne ultrasound with cellular polymer ferroelectrets [J].

Dansachmueller, Mario ;

Minev, Ivan ;

Bartu, Petr ;

Graz, Ingrid ;

Arnold, Nikita ;

Bauer, Siegfried .

APPLIED PHYSICS LETTERS, 2007, 91 (22)

[9] Cellular polyethylene-naphthalate ferroelectrets: Foaming in supercritical carbon dioxide, structural and electrical preparation, and resulting piezoelectricity [J].

Fang, P. ;

Wegener, M. ;

Wirges, W. ;

Gerhard, R. ;

Zirkel, L. .

APPLIED PHYSICS LETTERS, 2007, 90 (19)

[10]

Fang P, 2008, E-POLYMERS

← 1 2 3 →