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Piezoelectric and mechanical properties of structured PZT–epoxy composites

机译:结构化PZT-环氧树脂复合材料的压电和机械性能

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摘要

Structured lead zirconium titanate (PZT)–epoxy composites are prepared by dielectrophoresis. The piezoelectric and dielectric properties of the composites as a function of PZT volume fraction are investigated and compared with the corresponding unstructured composites. The effect of poling voltage on piezoelectric properties of the composites is studied for various volume fractions of PZT composites. The experimentally observed piezoelectric and dielectric properties have been compared with theoretical models. Dielectrophoretically structured composites exhibit higher piezoelectric voltage coefficients compared to 0–3 composites. Structured composites with 0.1 volume fraction of PZT have the highest piezoelectric voltage coefficient. The flexural strength and bending modulus of the structured and random composites were analyzed using three-point bending tests.
机译:通过介电电泳制备结构化钛酸锆锆(PZT)-环氧复合材料。研究了复合材料的压电和介电性能随PZT体积分数的变化,并与相应的非结构化复合材料进行了比较。研究了不同体积分数的PZT复合材料的极化电压对复合材料压电性能的影响。实验观察到的压电和介电性能已与理论模型进行了比较。与0–3复合材料相比,介电泳结构的复合材料显示出更高的压电电压系数。 PZT体积分数为0.1的结构化复合材料具有最高的压电电压系数。使用三点弯曲试验分析了结构化和无规复合材料的弯曲强度和弯曲模量。

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