PIEZOELECTRIC AND DIELECTRIC PROPERTIES OF MODIFIED PZT/PVDF PIEZOELECTRIC COMPOSITES

0-3 type modified PZT/PVDF piezoelectric composites with different volume ratio were prepared by High-temperature-pressing technique. The microstructure of the composites was observed by SEM. The influence of different volume ratios on the dielectric and piezoelectric properties of the modified PZT/PVDF piezoelectric composites was analyzed by using HP4294A and ZJ-3A. A higher piezoelectric and dielectric property of the composite was obtained when volume ratio of the modified PZT is (0.7). In higher volume ratio((0.5)) composites, some piezoelectric particles appear to be in contact, the properties of piezoelectric and dielectric of the composites are higher due to the type of 0-3(3-3) structure is formed.