Preparation, mechanical and electric properties of polypropylene fiber reinforced lead zirconate titanate flexible materials

Abstract

The preparation and properties of polypropylene fiber (PPF) reinforced lead zirconate titanate (PZT) flexible materials were investigated in this paper. PPF reinforced PZT composites were prepared by hot pressing. The microstructure, mechanical and electrical properties of PPF reinforced PZT composited were tested by Scanning Electron Microscope (SEM) technology, Universal tester, d33 quasi-static tester and LCR tester and were systematically characterized. The results showed that with the increase of PPF volume fraction, the reticular structures in the composites increase, and the bending strength σc and tensile strength σb of the composites increase; meanwhile, the relative dielectric constant εr and dielectric loss tanδ of the composites decreased gradually, but the piezoelectric strain constant d33 of the composite increases first and then decreases with the increase of PPF volume fraction. When the PPF volume fraction is 50%, the composite has superior mechanical properties and comprehensive electrical properties, and is relatively in mechanical electrical equilibrium with σc is 25.402 MPa, σb is 7.049 MPa, εr is 77.216 and d33 is 15 pC N−1.