Effects of particles size of ATH fillers on the performance of RTV rubber coatings

Author

Deng, H. ; Cherney, E.A. ; Hackam, R.

Author_Institution

Dept. of Electr. Eng., Windsor Univ., Ont., Canada

fYear

1993

fDate

17-20 Oct 1993

Firstpage

598

Lastpage

604

Abstract

The authors present a study of the effects of the particle size of ATH (alumina trihydrate) on the performance of RTV (room-temperature vulcanizing) coatings on fiber glass rod insulators under contamination and wet conditions in a salt-fog chamber. Examination of the surface using attenuated total reflection Fourier transform infrared (FTIR) spectroscopy coupled with determination of the current pulse counts indicates a significant effect of the particle size on the performance of ATH-filled RTV coatings. The best performance leading to the lowest leakage current pulse counts and the longest time to failure was obtained with coatings having 4.5 and 13 μm sizes of ATH particles. Measurement of the IR spectra of silicone fluid diffused to the surface shows that the silicone fluid was more pronounced with these two particle sizes

Keywords

Fourier transform spectra; aluminium compounds; infrared spectra; insulator testing; particle size; rubber; 13 micron; 4.5 micron; ATH fillers; ATR FTIR spectroscopy; AlH₃; IR spectra; RTV rubber coatings; alumina trihydrate; contamination; fiber glass rod insulators; longest time to failure; lowest leakage current pulse counts; particle size; room-temperature vulcanizing; salt-fog chamber; silicone fluid; wet conditions; Coatings; Fourier transforms; Glass; Infrared spectra; Insulation; Leakage current; Particle measurements; Reflection; Spectroscopy; Surface contamination;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1993. Annual Report., Conference on

Conference_Location

Pocono Manor, PA

Print_ISBN

0-7803-0966-9

Type

conf

DOI

10.1109/CEIDP.1993.378907

Filename

378907