Dielectric characterization of lead zirconate-titane(PZT) /polyurethane(PU) thin film composite: Volume fraction, frequency and temperature dependence

Abstract

The Lead Zirconate-titane(PZT) ceramic is known by its piezoelectric characteristic, but also by its stiffness. The use of a composite based on a polyurethane (PU) matrix charged by a piezoelectric material, enable to generate a large deformation of the material, therefore harvesting more energy. This new material will provide a competitive alternative and low cost manufacturing technology of autonomous systems (smart clothes, car seat, boat sail, flag …). A thin film of the PZT/PU composite was prepared using up to 80 vol. % of ceramic. Due to the dielectric nature of the PZT,inclusions of this one in a PU matrix raise the permittivity of the composite. For the most of industrial applications, the composite will not be used at room temperature, and as the energy harvested from this new materials have a direct relation with their permittivity we have made a study about the variation of the permittivity at different temperature and frequencies.

Dielectric properties and dielectric relaxation process of polymethylphenylsiloxane/silicon dioxide nanocomposites

“…In the region higher than the glass transition temperature, there is interfacial relaxation, which is also known as Maxwell–Wagner–Sillars (MWS) relaxation 45 . This is closely related to the interface between the nanosilica filler and PMPS matrix, which originates from the polarization between the filler and polymer chain in the heterogeneous system 46 . Similar to PMPS copolymers, PMPS composites also show significant DC conductivity in the high temperature region.…”

“…45 This is closely related to the interface between the nanosilica filler and PMPS matrix, which originates from the polarization between the filler and polymer chain in the heterogeneous system. 46 Similar to PMPS copolymers, PMPS composites also show significant DC conductivity in the high temperature region. The imaginary part of the complex dielectric constant increases rapidly with an increase in temperature; this can be explained by an accumulation of polarization charge at the interface between the composite and the electrode.…”

Enhanced Dielectric Properties of Polydimethylsiloxane Elastomer-Based Composites with Cyanosilicone

“…As the temperature increases, the molecular chains segments move disordered, causing both ε′ and ε″ of the polymer first to increase and then decrease. 34 The ε″ of PDMS-PCMHS elastomers exhibits two α relaxation peaks of PDMS around −110 °C and PCMHS around −75 °C, respectively. The peak for PCMHS became stronger with the increase of the content of cyanosilicone oil.…”

Thermal, mechanical, and dielectric properties of low loss PbZr0.3Ti0.7O3/polystyrene composites prepared by hot‐press method

“…Recent investigations of 0-3 connectivity composites involving PZT formulations have explored the effects of volume fractions and processing parameters. [21][22][23] However there have been very few studies on the electrical properties of PZT/PS composites and no attempt has been made so far to determine the effects of compositional variation of component phases on the properties of the composites. [24] In the present work, PS-based composites containing different amounts of lead zirconate titanate (PbZr 0.3 Ti 0.7 O 3 , PZT) particles were prepared by means of melt blending.…”