Title :
Influence of charging parameters on piezoelectricity for cellular polypropylene film electrets
Author :
Zhang, Pengfeng ; Xia, Zhongfu ; Qiu, Xunlin ; Wang, Feipeng ; Wu, XianYong
Author_Institution :
Pohl Inst. of Solid State Phys., Tongji Univ., Shanghai, China
Abstract :
The influences of charging parameters (such as charging voltage, charging time and charging temperature, etc.) on piezoelectricity and its thermal stability of cellular polypropylene film electrets were studied by means of contact charging, constant voltage corona charging methods and the thermal stimulated discharge technique. The reasons about the influence were discussed with the material structure and theoretic model of cellular piezoelectric film electrets. The results show that the piezoelectricity and its thermal stability of the polymer cellular film electrets would be improved by optimizing the charging parameters reasonably. The work will be helpful to broaden the application for cellular PP and offer theoretic and technical base for their industrialization.
Keywords :
corona; electrets; piezoelectric thin films; piezoelectricity; polymer films; thermal stability; thermally stimulated currents; cellular polypropylene film electrets; charging parameters; charging temperature; charging time; charging voltage; constant voltage corona charging methods; contact charging; material structure; piezoelectricity; polymer cellular film electrets; thermal stability; thermal stimulated discharge technique; Biological materials; Corona; Electrets; Piezoelectric films; Piezoelectric materials; Piezoelectricity; Polymer films; Temperature; Thermal stability; Voltage;
Conference_Titel :
Electrets, 2005. ISE-12. 2005 12th International Symposium on
Print_ISBN :
0-7803-9116-0
DOI :
10.1109/ISE.2005.1612313
