Transducer based on 2-2 type piezoelectric composite material covering matching layer and preparation method thereof
A piezoelectric composite material and composite material technology are applied in the field of transducers based on 2-2 type piezoelectric composite materials covering matching layers and their preparation, and can solve problems such as difficult sensitivity and the like
Pending Publication Date: 2022-04-12
HAIYING ENTERPRISE GROUP
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Abstract
The invention relates to a transducer based on a 2-2 type piezoelectric composite material covering matching layer and a preparation method of the transducer. The 2-2 type composite piezoelectric layer comprises a piezoelectric phase and an epoxy polymer phase, the matching layer is laid on the radiation surface of the piezoelectric composite layer, and the sound backing layer is laid on the non-radiation surface of the 2-2 type composite material. The thickness of the matching layer is determined in a way that the influence of the covering matching layer on the bandwidth of the transducer is researched by testing a conductivity curve of the transducer in water, so that the optimal thickness of the matching layer is determined. According to the invention, the matching layer is added on the piezoelectric composite material, so that the piezoelectric composite material generates multi-mode coupling to broaden the bandwidth of the high-frequency transducer and improve the sensitivity at the same time.
Application Domain
Mechanical vibrations separation
Technology Topic
Composite materialPiezoelectric composite +4
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PUM
Property | Measurement | Unit |
Thickness | 4.0 | mm |
Thickness | 1.0 ~ 4.01 | mm |
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