充电参数对聚丙烯蜂窝膜驻极体压电性的影响  

Influence of charging parameters on piezoelectricity for cellular PP film electrets

作　　者：张鹏锋[1] 夏钟福[1] 邱勋林[1] 王飞鹏[1] 吴贤勇[1] 

机构地区：[1]同济大学波耳固体物理研究所,上海200092

出　　处：《物理学报》2006年第2期904-909,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:50073016);中德合作项目(批准号:I/77365)资助的课题.~~

摘　　要：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.The influence of charging parameters （such as charging voltage, charging time and charging temperature, etc. ） on piezoelectricity and its thermal stability of cellular polypropylene film electrets was studied by means of contact charging and constant voltage corona charging methods and the thermal stimulated discharge technique. The cause of the influence is discussed in connection with the structure and the theoretic model of the cellular piezoelectric film electrets, and its dynamic characteristic of space charge is also analyzed. The results show that the piezoelectricity and its thermal stability of these electrets may be improved by optimizing the charging parameters. It is hoped that this work will be helpful to widen the application of cellular PP and will offer theoretic and technical basis for its industrialization.

关 键 词：聚丙烯蜂窝膜 压电性 充电参数 电荷输运 

分 类 号：TB383.2[一般工业技术—材料科学与工程]