采用溶胶-水热法合成了PLZST反铁电陶瓷纳米粉,并采用XRD,SEM和SAXS对其相组成、形貌和粒度进行了分析.PLZST晶相单一,纯度高,分散时为纳米球形,团聚为微米六面体,具自组装倾向.用溶解-热压法制备了不同比例的PLZST/PVDF 0-3型压电复合材料.研究了组成、电极以及极化电压对其介电性能的影响.结果表明:质量比3:1的PLZST/PVDF复合材料在110℃,极化电压为15kV/mm的条件下极化0.5h,可使其相对介电常数从47.7增大到56.0.用SEM观察其微观组织可知,PLZST陶瓷粒子在PVDF聚合物基体中分散很均匀,但存有少量气孔.
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