Comparison of space charge behavior between polypropylene and polyethylene

Author

Nakane, E. ; Kaneko, K. ; Mitzutani, T. ; Takino, H. ; Ishioka, M.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Nagoya Univ., Japan

Volume

3

fYear

2005

Firstpage

569

Abstract

In this paper we investigated space charge and electrical conduction in polypropylene (PP), H-PP and M-PP which are homopolymer and copolymer with 3∼3.5 % ethylene, respectively. Both space charge distribution and charging current were affected by the copolymerization of ethylene which enhanced electrical conduction. The amount of space charge in Al/PP/SC was the largest around 40 °C. The charge carriers injected from the semiconducting (SC) electrode became dominant with increasing temperature. Their results were compared with those of low-density polyethylene (LDPE). LDPE showed much higher current than PP. The difference in space charge distribution among H-PP, M-PP and LDPE was explained in terms of mobilities of charge carriers. The field dependence of charging currents was explained by Schottky injection.

Keywords

electrodes; polyethylene insulation; polymerisation; space charge; Schottky injection; electrical conduction; low-density polyethylene; polyethylene; polypropylene; semiconducting electrode; space charge behavior; Cable insulation; Charge carriers; Charge measurement; Current measurement; Electrodes; Polyethylene; Polymers; Recycling; Space charge; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 2005. (ISEIM 2005). Proceedings of 2005 International Symposium on

Print_ISBN

4-88686-063-X

Type

conf

DOI

10.1109/ISEIM.2005.193432

Filename

1496236