Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/40759
Title: Electrostriction of composites of polyurethane (PU) with ferroelectric lead zirconate titanate (PZT) ceramic particles
Authors: Wong, YW
Liu, CX
Tai, LS
Shin, FG
Keywords: Ceramics
Composites
Electrostriction
Ferroelectric materials
Particles
Polyurethane
X-ray diffraction
Photomicroscopy
Polarization
Issue Date: 2001
Publisher: SPIE-International Society for Optical Engineering
Source: Proceedings of SPIE : the International Society for Optical Engineering, 2001, v. 4329, 516 How to cite?
Journal: Proceedings of SPIE : the International Society for Optical Engineering 
Abstract: Electrostrictive composites of thermoplastic elastomer polyurethane (PU) and the ferroelectric lead zirconate titanate (PZT) of various volume fractions have been prepared by hot-roller miller. X-ray diffraction results and SEM micrographs showed that the ceramic crystallized in the ferroelectric phase and was dispersed uniformly in the elastomer. The elastic modulus and dielectric permittivity increased with PZT volume fractions. For composites of low PZT volume fraction, negative electrostrictive strain (contraction) was observed. As the PZT volume fraction increased to more than 6%, the composites exhibited a switching characteristic when the applied electric field was increased to a critical value. The critical electric fields decreased with increasing PZT volume fractions. This effect can be explained as the resultant of the electrostriction of PU and polarization reversal of the PZT at high field. This interesting property of the PU/PZT composite will lead to some switching actuations for high electric field applications.
Description: Smart Structures and Materials 2001 : Electroactive Polymer Actuators and Devices, Newport Beach, Calfornia, USA, 5-8 March 2001
URI: http://hdl.handle.net/10397/40759
ISSN: 0277-786X
EISSN: 1996-756X
DOI: 10.1117/12.432687
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