Space charge and field distributions in low-density polyethylene

Author

Mizutani, T. ; Semi, H. ; Kaneko, K. ; Mori, T. ; Ishioka, M.

Author_Institution

Nagoya Univ., Japan

fYear

2000

fDate

2000

Firstpage

493

Lastpage

496

Abstract

The space charge distributions in LDPE (low-density polyethylene) were measured by PEA (pulsed electro-acoustic) method, We used two kinds of LDPEs: m-LDPE polymerized with metallocene catalyst and LDPE polymerized under high-pressure process. The space charge in these two samples strongly depended upon the material of electrode. Semicon electrode enhanced carrier injection into LDPEs. The measurements of space charge dynamics revealed the effective mobility of positive and negative carriers. The space charge was much more stable in m-LDPE than in LDPE

Keywords

carrier mobility; charge injection; electric strength; polyethylene insulation; power cable insulation; space charge; carrier injection; effective mobility; field distributions; fixed DC field; high-pressure process polymerized LDPE; low-density polyethylene; metallocene catalyst polymerized LDPE; negative carriers; positive carriers; power cable insulation; pulsed electro-acoustic method; short circuiting; space charge distribution; Charge measurement; Circuits; Current measurement; Electrodes; Polyethylene; Polymers; Pulse measurements; Pulsed electroacoustic methods; Space charge; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2000. Conference Record of the 2000 IEEE International Symposium on

Conference_Location

Anaheim, CA

ISSN

1089-084X

Print_ISBN

0-7803-5931-3

Type

conf

DOI

10.1109/ELINSL.2000.845556

Filename

845556