Properties of photocured epoxy resin materials for application in piezoelectric ultrasonic transducer matching layers
作者： Alexandre Trogé , Richard L. O’Leary , Gordon Hayward , Richard A. Pethrick , Anthony J. Mullholland
DOI: 10.1121/1.3483734
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摘要: This paper describes the acoustic properties of a range epoxy resins prepared by photocuring that are suitable for application in piezoelectric ultrasonic transducer matching layers. Materials, based on blends diglycidyl ether Bisphenol A and 1,4-cyclohexanedimethanol ether, described. Furthermore, order to vary elastic character base resin, samples containing polymer microspheres or barium sulfate particles also The materials determined liquid coupled through transmission methodology, capable determining velocity attenuation longitudinal shear waves propagating an isotropic layer. Measured reported which demonstrate with specific impedance varying 0.88–6.25 MRayls. In comprising resin types, linear variation velocities density was observed. filled samples, showed approximately composition, reflecting dominance variation. While such variations can be predicted simple mixing laws, relaxation scattering effects influence both blended resins. These phenomena discussed reference dynamic mechanical thermal analysis differential scanning calorimetry samples.
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