Abstract

In order to investigate the surface potential decay tendency of the insulator polymers such as Polypropylene (PP) and Polyvinyl Chloride (PVC), the high voltage corona triode was applied to inject the charge into the surface and volume of the samples. Due to that the surface potential decay tendency is of utmost important to the investigation of space charge storage mechanism in those polymers, the decay tendency of each sample was tested and observed. The results show that the polypropylene with cellular structure can stored larger amount of the surface charges than the polyvinyl chloride. The results could be put into industrial application of insulation materials in the related fields of electrical insulation engineering.

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