PcC2. 1. 3. 1 PZT-Polymer composites for high pressure hydrophone application

Abstract

1.3.1 piezolectric-polymer composites are made on the basis of non-mechanical contact between the polymer matrix and the PZT rods within the transverse directions. The gh. dh hydrostatic figures of merit lie between 10. 10⁻¹² Pa⁻¹ and 27. 10⁻¹²Pa⁻¹. A gh. dh of 19. 10⁻¹²Pa⁻¹ is obtained with variations lower than 1dB from the room pressure to 10 MPa. The great influence of the uniaxial stress-dependence of the PZT longitudinal figure of merit is analysed and is considered as the basis of the optimalisation of the piezocomposite.