Interfacial properties of XLPE/EPDM laminates

Author

Suh, Kwang S. ; Nam, Jin Ho ; Kim, Ji Hwan ; Ko, Kwang Cheol ; Han, Sang Ok

Author_Institution

Dept. of Mater. Sci., Korea Univ., Seoul, South Korea

Volume

7

Issue

2

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

216

Lastpage

221

Abstract

Interfacial properties such as space charge accumulation and breakdown characteristics in crosslinked polyethylene (XLPE)/ethylene propylene diene terpolymer (EPDM) laminates were investigated. Homocharge is observed in EPDM containing 1,4-hexadiene while heterocharge is observed in EPDM containing 5-ethylene-2-norbornene. Interfacial charge develops when the EPDM is laminated with XLPE. The polarity of this interfacial charge reverses at less than a few tens of hours heat treatment at 80°C dc breakdown voltage shows a sequential change of an increase, a decrease and a slight increase as a function of heat treatment time, which holds true for both interfacial and volume breakdown voltages. A maximum breakdown voltage is observed at 20 to 24 h heat treatment. After long heat treatment, silicone grease used in the interface shows lower interfacial breakdown voltage than silicone oil for the dc case, which was attributed to the additives in the grease and the molecular weight of silicone molecules in oil and grease. Details of the results are given and their origins discussed

Keywords

XLPE insulation; composite insulating materials; composite material interfaces; electric breakdown; ethylene-propylene rubber; heat treatment; laminates; space charge; 1,4-hexadiene; 5-ethylene-2-norbornene; 80 C; XLPE/EPDM laminate; breakdown voltage; crosslinked polyethylene; ethylene propylene diene terpolymer; heat treatment; interfacial properties; silicone grease; silicone oil; space charge; Additives; Cable insulation; Chemicals; Computer interfaces; Curing; Electric breakdown; Heat treatment; Laminates; Petroleum; Space charge;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.841812

Filename

841812