1-3型压电复合材料的机电响应特性和温度稳定性

1-3型压电复合材料具备优异的机电耦合性能, 这对于高性能压电换能器的开发具有重要意义。该文采用低成本的切割填充法制备了不同结构参数的1-3型PZT/环氧树脂复合材料, 并结合有限元模拟法对其压电性能、机电响应特性和温度稳定性进行了系统地研究。1-3阵列结构对平面方向应变产生了很大的衰减, 使能量更集中于厚度共振模式。复合材料的高径比是影响机电耦合性能的主要因素, 更精细的阵列结构有利于高性能压电换能器的制造。在-20~60 ℃内, 1-3型压电复合材料的厚度机电耦合系数约为0.61, 变化率小于1%,表现出良好的温度稳定性。

Abstract

The 1-3 piezoelectric composites have great significance for the development of high-performance piezoelectric transducers due to its excellent electromechanical coupling properties. The 1-3 PZT/E-poxy composites with different structural parameters are fabricated by low-cost dice-fill process, and the piezoelectric properties, electromechanical response characteristics and temperature stability are systematically studied combined with the finite element simulation method. The 1-3 array structure produces a large attenuation of plane strain, which cause more concentrated energy in the thickness resonance mode. The aspect ratio of composites is the main factor affecting the electromechanical coupling performance, and the finer array structure is beneficial to the fabrication of high-performance piezoelectric transducers. The 1-3 piezoelectric composites show excellent temperature stability in the common temperature range from -20 ℃ to 60 ℃, while the thickness electromechanical coupling coefficient remains at about 0.61 with the change rate less than 1%.

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刘盛文, 王露, 翟迪, 袁晰, 周科朝, 张斗. 1-3型压电复合材料的机电响应特性和温度稳定性[J]. 压电与声光, 2022, 44(4): 507. LIU Shengwen, WANG Lu, ZHAI Di, YUAN Xi, ZHOU Kechao, ZHANG Dou. Electromechanical Response Characteristics and Temperature Stability of 1-3 Piezoelectric Composites[J]. Piezoelectrics & Acoustooptics, 2022, 44(4): 507.

1-3型压电复合材料的机电响应特性和温度稳定性

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