Title :
Effect of oxidation and space charge on high-field phenomena of low-density polyethylene prepared by metallocene catalyst
Author :
Ishii, Ryousuke ; Tomioka, Jorge ; Banmongkol, Channarong ; Mori, Tatsuo ; Mizutani, Teruyoshi ; Ishioka, Mitsugu
Author_Institution :
Nagoya Univ., Japan
Abstract :
We used low-density polyethylene (LDPE) prepared using metallocene catalyst (m-LDPE) and linear-LDPE prepared using Ziegler catalyst (LLDPE). The current density of slightly oxidized m-LDPE and LLDPE films is lower than that of unoxidized ones. The breakdown strength of m-LDPE and LLDPE films decreases with the progress of oxidation. In addition we consider the effect of space charge by the pre-stress method. It is found that m-LDPE has lower current density than LLDPE, but the sum of space charge of m-LDPE is larger than that of LLDPE
Keywords :
catalysis; current density; electric breakdown; materials preparation; oxidation; polyethylene insulation; power cable insulation; space charge; LDPE; Ziegler catalyst; breakdown strength; current density; high-field phenomena; linear-LDPE; low-density polyethylene; m-LDPE; metallocene catalyst; oxidation; pre-stress method; space charge; Breakdown voltage; Cable insulation; Conductive films; Current density; Current measurement; Dielectrics and electrical insulation; Electric breakdown; Oxidation; Polyethylene; Space charge;
Conference_Titel :
Electrical Insulating Materials, 1998. Proceedings of 1998 International Symposium on
Conference_Location :
Toyohashi
Print_ISBN :
4-88686-050-8
DOI :
10.1109/ISEIM.1998.741728
