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通过接触法充电、恒压电晕充电,以及开路热刺激放电技术,对充电参数(例如充电电压,充电时间和充电温度等)对聚丙烯蜂窝膜(PP cellular)驻极体的压电性及其热稳定性的影响的研究,并从孔洞型薄膜压电体的材料结构和理论模型出发,讨论了这些参数对其影响的原因,分析了与压电活性密切相关的空间电荷的动态特性.结果表明,合理地优化充电参数,能使这类呈闭合孔洞的聚合物蜂窝膜驻极体的压电性及其稳定性得以改善,为拓宽这类新型压电功能膜应用领域,推动其产业化进程提供了一定的理论和技术依据.
Through the charging of contact method, constant voltage corona charging, and open-circuit thermal stimulation discharge, the piezoelectricity of PP cellular electret with charging parameters (such as charging voltage, charging time and charging temperature) and Based on the material structure and theoretical model of the hole-type piezoelectric thin film, the reason of the influence of these parameters is discussed. The dynamic characteristics of the space charge closely related to the piezoelectric activity are analyzed. The results show that the reasonable optimization of charging parameters can improve the piezoelectricity and stability of these closed-cell polymer honeycomb electrets. In order to broaden the application fields of these new piezoelectric functional films and promote their industries The process of providing a certain theoretical and technical basis.