Aging in EPDM used for outdoor insulation

Author

Xu, Y. ; He, Y. ; Zeng, F. ; Zhang, R.

Author_Institution

Dept. of Mater. Sci. & Eng., Zhejiang Univ., China

Volume

6

Issue

1

fYear

1999

fDate

2/1/1999 12:00:00 AM

Firstpage

60

Lastpage

65

Abstract

The effect of accelerated weather aging on ethylene-propylene-diene monomer (EPDM) rubber used for outdoor insulation was studied by surface roughness measurement and X-ray photoelectron spectroscopy (XPS). The surface roughness of EFDM rubber changed with aging time. The surface oxygen and aluminum content were found to increase and that of carbon, silicon and nitrogen to decrease with time. The detailed XPS analysis indicated that the concentration of carbon in C-C decreased and that of highly oxidized carbons in C-O, C=O and O=C-O increased with time, which was due to the oxidation of EPDM rubber polymer. The appearance of O=C-O on the surface of EPDM rubber was a signal that EPDM rubber became aged. The aging speed decreased with time. The aging mechanism is discussed also

Keywords

X-ray photoelectron spectra; ageing; environmental degradation; ethylene-propylene rubber; surface topography; EPDM; X-ray photoelectron spectroscopy; accelerated weather aging; ethylene-propylene-diene monomer rubber; impurity concentration; outdoor insulation; oxidation; surface roughness; Accelerated aging; Aluminum; Insulation; Nitrogen; Oxidation; Rough surfaces; Rubber; Silicon; Spectroscopy; Surface roughness;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.752010

Filename

752010