Electroceramic Composites

该项目涉及一个具有高灵敏度的传感器应用的压电陶瓷聚合物复合材料家族的发展。由三维连接的聚合物基体和离散陶瓷颗粒组成的复合材料特别有趣，因为它们具有大的压电电压系数，灵活性和易于制造。为了获得有用的光电性能，需要更高体积分数的填料。目前用于这类复合材料的制造工艺由于难以在聚合物基体中加入高载荷的陶瓷填料而受到限制。该项目将开发一种新的制备工艺，以制备具有大量压电陶瓷（锆钛酸铅、钛酸铅、铌酸铅锌）和各种压电系数的复合材料，用于各种应用。常规和电晕放电极化技术将被用于复合材料的电极化。研究了偶联剂对复合材料介电和压电性能的影响。

This project deals with the development of a family of piezoelectric ceramic polymer composites with high sensitivity for sensor applications. Composites consisting of three-dimensionally connected polymer matrix loaded with discrete ceramic particles are especially interesting because of their large piezoelectric voltage coefficients, flexibility, and ease of fabrication. To achieve useful piexoelectric properties, a higher volume fraction of filler is necessary. Fabrication procedures presently used for this type of composite are limited by the difficulty in incorporating higher loading of the ceramic filler in the incorporating higher loading of the ceramic filler in the polymer matrix. This project will develop a new preparation procedure to prepare composites with a high volume of piezoelectric ceramics (lead zirconate titanate, lead titanate, lead zinc niobate) and various piezoelectric coefficients for a variety of applications. Conventional and corona discharge poling techniques will be used to electrically polarize the composites. The effect of using a coupling agent on dielectric and piezoelectric properties of composites will also be investigated.