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Proceedings Paper

High k dielectric elastomeric materials for low voltage applications
Author(s): C. Walder; M. Molberg; D. M. Opris; F. A. Nüesch; C. Löwe; C. J. G. Plummer; Y. Leterrier; J.-A. E. Månson
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Paper Abstract

In principle EAP technology could potentially replace common motion-generating mechanisms in positioning, valve control, pump and sensor applications, where designers are seeking quieter, power efficient devices to replace conventional electrical motors and drive trains. Their use as artificial muscles is of special interest due to their similar properties in terms of stress and strain, energy and power densities or efficiency. A broad application of dielectric elastomer actuators (DEA) is limited by the high voltage necessary to drive such devices. The development of novel elastomers offering better intrinsic electromechanical properties is one way to solve the problem. We prepared composites from cross-linked silicone elastomers or thermoplastic elastomers (TPE) by blending them with organic fillers exhibiting a high dielectric constant. Well characterized monomeric phthalocyanines and modified doped polyaniline (PANI) were used as filler materials. In addition, blends of TPE and an inorganic filler material PZT were characterized as well. We studied the influence of the filler materials onto the mechanical and electromechanical properties of the resulting mixtures. A hundredfold increase of the dielectric constant was already observed for blends of an olefin based thermoplastic elastomer and PANI.

Paper Details

Date Published: 6 April 2009
PDF: 9 pages
Proc. SPIE 7287, Electroactive Polymer Actuators and Devices (EAPAD) 2009, 72870Q (6 April 2009); doi: 10.1117/12.815926
Show Author Affiliations
C. Walder, EMPA (Switzerland)
M. Molberg, EMPA (Switzerland)
École Polytechnique Fédérale de Lausanne (Switzerland)
D. M. Opris, EMPA (Switzerland)
F. A. Nüesch, EMPA (Switzerland)
C. Löwe, EMPA (Switzerland)
C. J. G. Plummer, École Polytechnique Fédérale de Lausanne (Switzerland)
Y. Leterrier, École Polytechnique Fédérale de Lausanne (Switzerland)
J.-A. E. Månson, École Polytechnique Fédérale de Lausanne (Switzerland)

Published in SPIE Proceedings Vol. 7287:
Electroactive Polymer Actuators and Devices (EAPAD) 2009
Yoseph Bar-Cohen; Thomas Wallmersperger, Editor(s)

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