Electrical conduction phenomena of oil/polymer systems

Author

Ochiai, S. ; Iwasaki, H. ; Mizutani, T. ; Ieda, M.

Author_Institution

Dept. of Electr. Eng., Nagoya Univ., Japan

fYear

1989

fDate

29 Oct-2 Nov 1989

Firstpage

346

Lastpage

351

Abstract

Oil-polymer interactions were investigated using various combinations of polymer and oil. The current magnitudes in oil-polymer systems were in the following order: LDPE>HDPE>PP>PET≫FEP. These results are discussed, considering the solubility parameter (SP), the crystallinity of the polymer, and impurities in the polymer. It was found that the magnitude of the charging current in oil-polymer systems cannot be explained by the SP value alone. It is affected by impurities in the polymer (including antioxidant) close to the oil-polymer interface. Antioxidant is extracted from the polymer during sulfuric acid treatment. The treatment of sulfuric acid reduces the current and changes the TSC (thermally stimulated current) spectrum

Keywords

composite insulating materials; insulating oils; interface phenomena; organic insulating materials; polymers; thermally stimulated currents; FEP; H₂SO₄ treatment; HDPE; LDPE; PET; PP; TSC spectrum; charging current; crystallinity; electrical conduction phenomena; fluorinated ethylene propylene; high density polyethylene; impurities; low density polyethylene; oil-polymer interaction; oil-polymer interface; oil-polymer systems; polyphenylene; solubility parameter; thermally stimulated current; Crystallization; Current measurement; Impurities; Petroleum; Polyethylene; Polymer films; Positron emission tomography; Steel; Surface charging; Surface discharges;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1989. Annual Report., Conference on

Conference_Location

Leesburg, VA

Type

conf

DOI

10.1109/CEIDP.1989.69570

Filename

69570