Title :
Influence of pressure expanding treatment on electret properties of polypropylene cellular
Author :
Xia, Zhongfu ; Wang, Feipeng ; Qiu, Xiaomin ; Qiu, Xunlin ; Shen, Jun
Author_Institution :
Pohl Inst. of Solid State Phys., Tongji Univ., Shanghai, China
Abstract :
The estimation of trap-levels for corona charged PP cellular and the influence of pressure expanding treatment on its charge stability and detrapped charge transportation were studied by means of surface potential decay measurements, TSD current spectrum analyses and charge TSD, etc. The results point out that there are three kinds of distinct energy level traps in cellular PP films. The pressure expanding treatment changes the state of traps and also, to a certain extent, reduces the charge storage stability, but basically, has no impact on its charge transport rule, in which the slow retrapping effect is dominant.
Keywords :
charge exchange; corona; electrets; electron traps; energy states; hole traps; polymer films; surface potential; thermally stimulated currents; TSD current spectra; charge TSD; charge storage stability; corona charged polypropylene cellular films; detrapped charge transportation; energy level traps; pressure expanding treatment; surface potential decay measurements; Breakdown voltage; Corona; Electrets; Frequency estimation; Physics; Piezoelectric films; Piezoelectricity; Solid state circuits; Space charge; Temperature;
Conference_Titel :
Electrets, 2005. ISE-12. 2005 12th International Symposium on
Print_ISBN :
0-7803-9116-0
DOI :
10.1109/ISE.2005.1612416
