Title :
Space charge accumulation in PET film under process of rising and falling temperature
Author :
Miyatake, Kazuma ; Tatehana, Kazuhito ; Tanaka, Yasuhiro ; Takada, Tatsuo
Author_Institution :
Musashi Inst. of Technol., Tokyo, Japan
Abstract :
Dynamic behavior of electric charges in the PET film has been investigated under the condition of polarization and depolarization processes using the PEA system controlling temperature. The PET film of 190 μm in thickness was polarized by dc electric field of 30 kV/mm under temperature elevated up to 150°C. And the film was depolarized without dc electric stress under re-elevated temperature to 150°C. The negative hetero-charge was clearly accumulated at the neighbor of anode in the sample and was stable for a long time. The hetero-charge was disappeared at the range of temperature 70-120°C during the depolarization process
Keywords :
dielectric depolarisation; dielectric polarisation; polymer films; space charge; 70 to 150 C; DC electric field; PEA system; PET film; depolarization; insulating material; polarization; space charge; temperature dependence; Charge measurement; Control systems; Current measurement; Dielectric measurements; Positron emission tomography; Pulse measurements; Space charge; Temperature control; Temperature distribution; Voltage;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
0-7803-5459-1
DOI :
10.1109/ICPADM.2000.875625
