| 摘要 |
A multilayer backing for an ultrasonic transducer array comprises at least two layers in contact with each other. The first layer is formed from a first composition comprising an epoxy resin base and a powder. The second layer is formed from a second composition comprising an epoxy resin base, a powder, and at least one of a phenolic shell micro-balloon and a plasticizer. The first layer is more rigid than the second layer so that the first layer provides mechanical support for the array, while the second layer provides maximal sound absorbance.
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