High Strain Piezo-Polymer

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Abstract:

A primary objective of the present invention is to produce an electrostrictive terpolymer such as vinylidene fluoride- trifluoroethylene-chlorofluoroethylene VDF-TrFE-CFE, without utilizing electron irradiation, which may be used as an active material capable of generating sound in acoustic, underwater transducers and mechanical motion in actuator devices. It is also a primary objective of the present invention to produce an electrostrictive terpolymer such as VDF-TrFE-CFE which may be used as a replacement for electron irradiated high-strain PVDF-TrFE films. It is also a primary objective of the present invention to produce an electrostrictive terpolymer such as VDF-TrFE-CFE which has gauche-type conformational defects along the polymer chain which results in a broad distribution of polarizations that favor higher electrostrictive strains than current electrostrictive polymers. It is also an objective of the present invention to produce an electrostrictive terpolymer which exhibits larger mechanical strains than known in the art. It is also an objective of the present invention to process an electrostrictive terpolymer such as VDF-TrFE-CFE which is less expensive and less cumbersome than current electrostrictive materials and methods of making those electrostrictive materials.

Author(s):
Ramotowski, Thomas S. ; Kavarnos, George J. ; Zhang, Qiming
Author Organization(s):
DEPARTMENT OF THE NAVY WASHINGTON DC
Descriptive Note:
Patent application, Filed 21 Nov 2003
Pagination:
0024

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-10 719 852
Monitor Series:
NUWC-NPT
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*PATENT APPLICATIONS, *POLYMERS, *PIEZOELECTRIC MATERIALS, *ELECTROSTRICTION, POLARIZATION, ACTUATORS, ELECTRON IRRADIATION, ETHYLENES, PIEZOELECTRIC TRANSDUCERS
Field(s)/Group(s):
Polymer Chemistry, Electricity and Magnetism, Electrical and Electronic Equipment
Keyword(s):
*TERPOLYMERS
Report Date:
2005 Jul 18
Creation Date:
2005 Aug 10