Temperature dependence of dielectric properties and space charge formation in PP film under AC high-field

Description

AC space charge layer is considered to be formed near the electrode under AC high-field application, however, the measurement of AC space charge distribution is not so easy due to the resolution limit. We measured high-field dielectric properties of PP film up to 120/spl deg/C by using short time AC ramp voltage application method. From the results, AC conduction mechanism and the space charge behavior under AC high field in high-temperature region were studied.

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