Wang Jiacheng, Zhong Chao, Hao Shaohua, Wang Likun
Beijing Key Laboratory for Sensor, Beijing Information Science & Technology University, Beijing 100101, China.
School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China.
Materials (Basel). 2021 Apr 2;14(7):1749. doi: 10.3390/ma14071749.
With the increasing demand for energy exchangers in underwater acoustic equipment, a modified 1-3 piezoelectric composite material is fabricated based on three-component phases. The new material outperforms the traditional two-phase 1-3 structure. Flexible silicone rubber polymer strengthened the piezoelectric composite and the properties of modified 1-3 piezoelectric composite have been tested by method of finite element simulation and experiment, respectively. This modified material has a high electromechanical coupling coefficient; the maximum can reach 0.684 and -3 dB bandwidth is superior to the two-phase 1-3 type. At the same time, the modified phase 1-3 type structure has an excellent decoupling effect. Silicone rubber can reduce the negative coupling vibration of epoxy resin, the vibration model simplification of piezoelectric composite, and the result of the experiment and simulation has good consistency.
随着水下声学设备对能量交换器的需求不断增加，基于三元相制备了一种改性的1-3型压电复合材料。这种新材料优于传统的两相1-3结构。柔性硅橡胶聚合物增强了压电复合材料，并分别通过有限元模拟和实验方法对改性1-3型压电复合材料的性能进行了测试。这种改性材料具有高机电耦合系数，最大值可达0.684，-3dB带宽优于两相1-3型。同时，改性的1-3型结构具有优异的去耦效果。硅橡胶可以降低环氧树脂的负耦合振动，简化压电复合材料的振动模型，实验和模拟结果具有良好的一致性。
