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采用固相法制备了0.8Pb(Mn1/3Sb2/3)0.05(Zr1/2Ti1/2)0.95O3–0.2Pb(Zn1/3Nb2/3)0.28(Zr1/2Ti1/2)0.72O3(PMnS–PZN–PZT)粉末,然后用塑性聚合物方法制备了PMnS–PZN–PZT压电纤维。研究了纤维夹持状态对其铁电性能的影响。结果表明:塑性聚合物法制备的PMnS–PZN–PZT压电纤维具有良好的铁电性能,压电纤维处于自由状态时,剩余极化强度和矫顽场分别为85.4μC/cm2和8.5kV/cm,但电滞回线很难饱和。将纤维采用环氧树脂固化后,剩余极化强度变成39.2μC/cm2,电滞回线呈饱和状态,说明夹持状态对纤维的铁电性能产生很大的影响。高压下压电纤维浇铸前后的漏电流测试结果表明,压电纤维浇铸后剩余极化强度变小主要与漏电流有关。
(Mn1 / 3Sb2 / 3) 0.05 (Zr1 / 2Ti1 / 2) 0.95O3-0.2Pb (Zn1 / 3Nb2 / 3) 0.28 (Zr1 / 2Ti1 / 2) 0.72O3 (PMnS-PZN- PZT) powder, and then PMnS-PZN-PZT piezoelectric fiber was prepared by plastic polymer method. The effect of fiber holding state on the ferroelectric properties was investigated. The results show that PMnS-PZN-PZT piezoelectric fiber prepared by plastic polymer has good ferroelectric properties. When the piezoelectric fiber is in free state, the remanent polarization and coercive field are 85.4μC / cm2 and 8.5kV / cm, but the hysteresis loop is difficult to saturate. After the fiber was cured with epoxy resin, the remanent polarization became 39.2 μC / cm2, and the hysteresis loop was saturated, indicating that the clamping state had a great influence on the ferroelectric properties of the fiber. The results of the leakage current test before and after the piezoelectric fiber under high pressure show that the remanent polarization intensity decreases after the piezoelectric fiber is cast, which is mainly related to the leakage current.