A Study on PZT-Epoxy Piezoelectric Composites by Dynamic Mechanical Analyzer

Abstract

In this study, a new type of piezoelectric damping composites was prepared by embedding thin plates of piezoelectric ceramic (Pb (Zr x T 1−x ) O 3 , PZT ) with various sizes in epoxy resin matrix. An external electric resistor was connected to the piezoelectric plates of the composites to improve the damping behaviors of the composite structure. Dynamic Mechanical Analyzer (DMA8000 manufactured by Perkin Elmer) was used to study the PZT/epoxy piezoelectric composite system at different temperature and frequency range. The experimental results were discussed in terms of the damping and viscoelastic effect of the PZT-epoxy composite system.

Facile Fabrication of a Novel PZT@PPy Aerogel/Epoxy Resin Composite with Improved Damping Property

“…These reports proved that the damping behavior of polymers can be improved by the introduction of piezo-damping effect. Briefly speaking, the external mechanical energy, like vibration and noise, could be transformed into electrical energy through the piezoelectric effect of the piezoelectric ceramics, and then the generated electrical energy can be dissipated into heat as it flows through the resistive phase of the composite [14,15,16]. To guarantee the generated electrical energy fully dissipated, the volume resistivity of the material should be better adjusted in the semiconductor range.…”