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Integrated piezoelectric function in a high thermostable thermoplastic PZT/PEEK composite

Carponcin, Delphine and Dantras, Eric and Laffont-Dantras, Lydia and Dandurand, Jany and Aridon, Gwenaëlle and Levallois, Franck and Cadiergues, Laurent and Lacabanne, Colette Integrated piezoelectric function in a high thermostable thermoplastic PZT/PEEK composite. (2014) Journal of Non-Crystalline Solids, 388. 32-36. ISSN 0022-3093

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Official URL: http://dx.doi.org/10.1016/j.jnoncrysol.2014.01.020

Abstract

A piezoelectric structural material has been developed. Lead Zirconate Titanate (PZT) submicronic nanoparticles have been dispersed in a thermostable high performance thermoplastic polymer Poly(Ether Ether Ketone) i.e. PEEK to ensure piezoelectric properties. The inorganic particles with a mean diameter of 900 nmare polycrystalline as highlighted by HRTEM with a grain diameter estimated at 15 nm. XRD patterns have shown that the crystalline structure is rhombohedral i.e. ferroelectric. The PZT/PEEK composites have been elaborated by extrusion which allows reaching a satisfactory dispersion of particles even at high volume fraction (30% in volume). One of the challenges was to find poling conditions compatible with the thermal stability of the matrix. Indeed, this composite must be poled above the polymer glass transition temperature to improve matching of dielectric permittivity between inorganic and organic phases. The influence of the poling electric field on the final piezoelectric activity of the composite has also been studied to better understand the role of the polymer matrix. Finally, after a poling step, the PZT/PEEK composite exhibits a piezoelectric strain coefficient which can be exploited over a wide temperature range.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Non-Crystalline Solids website : http://www.sciencedirect.com/science/journal/00223093
HAL Id:hal-00956693
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National d'Études Spatiales - CNES (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > EADS - Astrium (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:07 Mar 2014 09:34

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