Temperature-frequency dependence of electrostrictive properties of a polyurethane elastomer

J. Su, C. H. Kim, V. D. Kugel, Qiming Zhang, R. Y. Ting, R. Capps

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

7 Scopus citations

Abstract

It was discovered recently that a large electric-field-induced strain can be obtained in several polyurethane elastomers which show promises for the applications in the transducers and actuators. In this study, electrostrictive properties of a polyurethane elastomer were investigated systematically. The elastic, dielectric and DSC spectroscopy analysis indicated the existence of two transition processes in the polyurethane from -50 °C to 80 °C. The field-induced strain coefficients exhibited large increases at the transition regions, indicating that the transition processes have a significant effect on the field-induced strain response. From the elastic and dielectric constant data, the contribution of uniform Maxwell stress was calculated. It was found that the contribution of the Maxwell stress effect to the measured strain coefficient increased from about 10% below the glass transition temperature, Tg, (approximately -25 °C) to about 50% and 35% for the frequencies of 10 Hz and 100 Hz, respectively, at approximately 40 °C, which is above Tg. The difference between the measured strain response and the calculated Maxwell stress effect indicates a significant contribution from other mechanisms such as electrostriction.

Original languageEnglish (US)
Title of host publicationIEEE International Symposium on Applications of Ferroelectrics
EditorsB.M. Kulwicki, A. Amin, A. Safari
PublisherIEEE
Pages927-930
Number of pages4
Volume2
StatePublished - 1996
EventProceedings of the 1996 10th IEEE International Symposium on Applications of Ferroelectrics, ISAF. Part 1 (of 2) - East Brunswick, NJ, USA
Duration: Aug 18 1996Aug 21 1996

Other

OtherProceedings of the 1996 10th IEEE International Symposium on Applications of Ferroelectrics, ISAF. Part 1 (of 2)
CityEast Brunswick, NJ, USA
Period8/18/968/21/96

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Materials Science

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