电泳辅助制备伪1-3陶瓷/聚合物压电复合材料

1-3压电复合材料的压电、介电及铁电性能要远远优于0-3压电复合材料.在制备传统的0-3复合材料过程中引入电泳技术,使得压电颗粒在聚合物基体中取向排列,制备得到伪1-3复合材料.实验结果表明:在制备PZT/环氧树脂0-3复合压电材料固化过程中,采用500 V/mm,4 kHz的电场对其进行电泳辅助取向,可使得颗粒呈现珍珠串状排列,得到伪1-3复合材料;其压电、介电、铁电性能均比原来的0-3复合材料有显著的提高.电泳辅助制备技术用于制备伪1-3复合压电材料具有操作简单、成本低廉、压电、介电、铁电性能显著提高等优点,在智能传感领域具有很好的实际应用前景.

Electrophoresis-assisted fabrication of pseudo 1-3 ceramic/polymer piezoelectric composites

The 1-3 ceramic/polymer piezoelectric composites have greater dielectric, piezoelectric and ferroelectric properties than 0-3 composites. In this paper, electrophoresis is introduced into the fabrication procedure of traditional 0-3 ceramic/polymer piezoelectric composite to move and pearl-serially align the piezoelectric particles in the polymer matrix, which is called pseudo 1-3 composite. In this work, the PZT/epoxy pseudo 1-3 piezoelectric is fabricated via using a 500 V/mm, 4 kHz AC electric field to form the electrophoresis phenomenon during the curing procedure. Compared with the traditional 0-3 piezoelectric composites, the pseudo 1-3 piezoelectric composites behave as the significantly-enhanced dielectric, piezoelectric and ferroelectric performances on basis of our theoretical analysis and experimental measurement result. Electrophoresis–assisted fabricating pseudo 1-3 piezoelectric composite possesses the advantages of simple operation, low cost and significant performance improvement, which make it hopeful to be used to prepare high-performance ceramic/polymer piezoelectric composites for practical application.