Elastomeric composites with high dielectric constant for use in Maxwell stress actuators

J. P. Szabo, J. A. Hiltz, C. G. Cameron, R. S. Underhill, J. Massey, B. White, J. Leidner

Producción científica: Contribución a una revistaArtículo de la conferenciarevisión exhaustiva

45 Citas (Scopus)

Resumen

Electroactive polymer actuators that utilize the Maxwell stress effect have generated considerable interest in recent years for use in applications such as artificial muscles, sensors, and parasitic energy capture. In order to maximize performance, the dielectric layer in Maxwell stress actuators should ideally have a high dielectric constant and high dielectric breakdown strength. In this study, the effect of high dielectric constant fillers on the electrical and mechanical properties of thin elastomeric films was examined. The fillers studied included the inorganic compounds titanium dioxide (TiO2), barium titanate (BaTiO3), and lead magnesium niobate-lead titanate (Pb(Mg1/3Nb2/3)O3-PbTiO). A high dielectric constant filler based on a polymeric conjugated ligand-metal complex, poly(copper phthalocyanine), was also synthesized and studied. Maxwell stress actuators fabricated with BaTiO3 dispersed in a silicone elastomer matrix were evaluated and compared with unfilled systems. A model was presented which relates filler volume fraction to actuation stress, strain, and elastic energy density at fields below dielectric breakdown. The model and experimental results suggest that for the case of strong filler particle-elastomer matrix interaction, actuation strain decreases with increasing filler content.

Idioma originalEnglish
Páginas (desde-hasta)180-190
Número de páginas11
PublicaciónProceedings of SPIE - The International Society for Optical Engineering
Volumen5051
DOI
EstadoPublished - 2003
Publicado de forma externa
EventoPROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Smart Structures and Materials 2003 Electroactive Polymer Actuators and Devices (EAPAD) - San Diego, CA, United States
Duración: mar. 3 2003mar. 6 2003

ASJC Scopus Subject Areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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