SENSITIVE ELEMENT FROM CONNECTIVITY PIEZOCOMPOSITE 1-3 AND METHOD OF ITS PRODUCTION Russian patent published in 2019 - IPC H04R1/44 

FIELD: physics.

SUBSTANCE: group of inventions relates to piezoelectric transducers of ceramic-polymer type with cohesion of 1–3 and can be used to increase receiving sensitivity of hydroacoustic antennae. Sensitive element from connectivity piezocomposite 1–3 comprises rods made of lead-zirconate-titanate-based piezoelectric material having longitudinal polarization arranged uniformly in polymer matrix and provided on electrodes with ends, wherein polymer matrix is made of mixture in equal-volume ratio of polyurethane and hollow ceramic balls uniformly distributed throughout matrix volume, and the matrix and the piezoceramic rods are located between the in-series current-conducting grid and the thin elastic plates of the material having Young's modulus value of not less than 2.5⋅10⁹ Pa, wherein electrodes of rods, mesh and plate are rigidly glued to each other, and current conducting grid and electrodes are electrically connected.

EFFECT: technical result is increased sensitivity of sensing element from connectivity piezocomposite 1–3.

7 cl, 6 dwg, 1 tbl