Title :
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
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;
Conference_Titel :
Electrical Insulation, 2000. Conference Record of the 2000 IEEE International Symposium on
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-5931-3
DOI :
10.1109/ELINSL.2000.845556
