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Peculiarities of the dielectric and dynamic-mechanical response in poly(vinylidene fluoride - Hexafluoropropylene)

 
: Frübing, P.; Wang, F.; Wegener, M.; Gerhard, R.

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Institute of Electrical and Electronics Engineers -IEEE-:
14th International Symposium on Electrets, ISE 2011. Proceedings : 28-31 Aug. 2011, Montpellier
Piscataway: IEEE, 2011
ISBN: 978-1-4577-1023-0
S.79-80
International Symposium on Electrets (ISE) <14, 2011, Montpellier>
Englisch
Konferenzbeitrag
Fraunhofer IAP ()

Abstract
Uniaxial stretching of P(VDF-HFP) films with optimized stretching parameters does not significantly increase the elastic modulus at room temperature, but induces an enhanced electric polarization. This may explain their outstanding electro-mechanical properties. The increase of polarization stems from the formation of a ferroelectric phase, an additional polarization in the amorphous phase and from melting of secondary crystallites formed in the amorphous phase by annealing or storage.

: http://publica.fraunhofer.de/dokumente/N-208896.html