Study of dielectric and piezoelectric properties of a Polymer/PZT composite with connectivity 1-3

• Grant number: 16/15718-2
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: December 01, 2016
• End date: November 30, 2017
• Field of knowledge: Engineering - Electrical Engineering
• Principal Investigator: Michael Jones da Silva
• Grantee: João Gustavo Leite Costa
• Host Institution: Universidade Estadual Paulista (UNESP). Campus de Rosana. Rosana , SP, Brazil

Abstract

The objective of this project is study of dielectric and piezoelectric properties of polymer/PZT (Lead Zirconate Titanate) composites with 1-3 connectivity. To obtain of the composites will be employed the castor-oil based polyurethane and as second phase PZT microwires. The piezoelectric response will be evaluated according to the stoichiometric ratio between the prepolymer and polyol (castor-oil based) in order to correlate with the mechanical properties of the matrices. Dependence of the piezoelectric coefficient d33 with the intensity of the electric field and polarization time also will be investigated. This study intends to evaluate the dielectric properties to investigate the relaxation processes that occur when the composites are subjected to an external ac electric field. With the analysis will be possible to assess that the composite has potentiality of application as energy harvesting or piezoelectric sensor. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

JOÃO GUSTAVO LEITE COSTA; PEDRO HENRIQUE FERRARREZI RODRIGUES; LEONARDO LATARO PAIM; ALEX OTÁVIO SANCHES; JOSÉ ANTÔNIO MALMONGE; MICHAEL JONES DA SILVA. 1-3 Castor Oil-Based Polyurethane/PZT Piezoelectric Composite as a Possible Candidate for Structural Health Monitoring. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, v. 23, n. 5, 2020-10-26. (17/19809-5, 16/15718-2)