The laminated 2-2 connectivity cement/polymer based piezoelectric composites with variedpiezoelectric phase distribution were fabricated by employing Lead Zirconium Titanate ceramicas active phase, and mixture of cement powder, epoxy resin, and hardener as matrix phase with a mass proportion of 4:4:1. The dielectric, piezoelectric, and electromechanical coupling properties of the composites were studied. The composites with large total volume fraction ofpiezoelectric phase have large piezoelectric strain constant and relative permittivity, and thepiezoelectric and dielectric properties of the composites are independent of the dimensional variations of the piezoelectric ceramic layer. The composites with small total volume fraction of piezoelectric phase have large piezoelectric voltage constant, but also large dielectric loss. The composite with gradually increased dimension of piezoelectric ceramic layer has the smallest dielectric loss, and that with the gradually increased dimension of matrix layer has the largest piezoelectric voltage constant. The novel piezoelectric composites show potential applications in fabricating ultrasonic transducers with varied surface vibration amplitude of thetransducer.
Published in Journal of Applied Physics, Volume 116, Issue 24, 2014, pages #244103-.
©Journal of Applied Physics 2014, American Institute of Physics (AIP).
Dongyu, X., Xin, C., Banerjee, S., & Shifeng, H. (2014). Design, Fabrication, and Properties of 2-2 Connectivity Cement/Polymer based Piezoelectric Composites with Varied Piezoelectric Phase Distribution. Journal of Applied Physics, 116 (24), #244103. http://dx.doi.org/10.1063/1.4904931