A direct proof for Maxwell–Wagner effect of heterogeneous interface

In this paper, the Maxwell–Wagner effect and charge characteristics of heterogeneous interface at action higher electric field elevated temperature are investigated by means electret technology. A composite membrane with a double-layer structure polypropylene (PP) film fluorinated ethylene propylene copolymer (FEP) was made. After being polarized under temperature, component PP FEP films membranes were separated. The density measured to analyze interfacial in membrane. Experimental results directly prove that consistent result calculated effect. polarity can be switched changing polarizing voltage. accumulated strongly dependent on conductivity, which is affected field. new phenomenon, is, much than effect, found. reason ascribed from films. This research provides insight into interface.