Ferroelectric relaxor terpolymers: Properties and potential applications

F. Bauer, E. Fousson, Q. M. Zhang

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Scopus citations

    Abstract

    Ferroelectric materials are intrinsically multifunctional and have found a broad range of applications. A new class of semicrystalline terpolymers comprising vinylidene fluoride (VDF), trifluoroethylene (TrFE), and 1,1-chlorofluoroethylene (CFE), were prepared at ISL via a suspension polymerization process. A cooperative research program between our laboratories has led to extensive characterization and understanding of many compositions of these new relaxor terpolymers. Relevant studies and results show that this class of electroactive polymers offers unique properties in comparison with other ferroelectric polymers. The terpolymer exhibits high electrostrictive strain (>7%) with relatively high modulus (>0.3GPa). It has been also observed that the large electrostrictive strain is nearly constant in the temperature range from 20°C to 80°C. The high room temperature relative dielectric constant (∼ 50, which is the highest among all the known polymers), high induced polarization (∼ 0.05 C/m2), and high electric breakdown field (>400 MV/m) lead to very high volume efficiency for the electric energy storage operated under high voltage (∼ 10 J/cm3). It should be pointed out that large entropy change associated with the polarization change in the material has been observed.

    Original languageEnglish (US)
    Title of host publication2005 12th International Symposium on Electrets, ISE 12 - Proceedings
    Pages117-120
    Number of pages4
    StatePublished - Dec 1 2005
    Event2005 12th International Symposium on Electrets, ISE 12 - Salvador, Bahia, Brazil
    Duration: Sep 11 2005Sep 14 2005

    Publication series

    NameProceedings - International Symposium on Electrets
    Volume2005

    Other

    Other2005 12th International Symposium on Electrets, ISE 12
    CountryBrazil
    CitySalvador, Bahia
    Period9/11/059/14/05

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Electrical and Electronic Engineering
    • Materials Chemistry

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