Quantitative evaluation of nano-silica dispersion in silicone nanocomposites and its resistance to erosion and tracking

Author

Tominaga, T. ; Kozako, Masahiro ; Hikita, Masayuki ; Inoue, Ryo ; Kondo, Toshiaki ; Ueta, Genyo ; Okabe, Shigemitsu

Author_Institution

Kyushu Inst. of Technol., Fukuoka, Japan

fYear

2011

fDate

6-10 Sept. 2011

Firstpage

301

Lastpage

304

Abstract

Silicone rubber nanocomposites were newly prepared for outdoor insulation in laboratory scale. This paper deals with the effects of addition of nano scale silica filler on tracking and erosion resistance of silicone rubber. Silica (SiO₂) particles of 7 nm, 40 nm, 0.5 μm and 22 μm in average of primary particle size were used as silica fillers. For effective mixing nano filler, an ultrasonic homogenizer was used. Aluminum trihydrate (Al(OH)₃ or ATH) particle of 10.5 μm in average of primary particle size was used as micro filler for comparison. Filler content was mainly fixed in 5 weight (wt) % in all composites. The dispersion state of nano filler in specimens was observed by scanning electron microscopy and then evaluated quantitatively by an imaging analysis. Inclined plane tracking and erosion test according to the IEC 60587 and arcing resistance test according to the IEC 60621 were performed to investigate effects of nano silica dispersion for erosion resistance property.

Keywords

composite insulating materials; nanocomposites; scanning electron microscopy; silicon compounds; silicone rubber; IEC 60587; IEC 60621; SiO₂; arcing resistance test; erosion resistance; erosion test; imaging analysis; inclined plane tracking; nanosilica dispersion; quantitative evaluation; scanning electron microscopy; silica fillers; silicone rubber nanocomposites; size 0.5 mum; size 22 mum; size 40 nm; size 7 nm; ultrasonic homogenizer; Degradation; Dispersion; Insulation life; Nanocomposites; Resistance; Rubber; Silicon compounds; imaging analysis; inclined plane tracking and erosion test; nanocomposite; silica; silicone rubber;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials (ISEIM), Proceedings of 2011 International Conference on

Conference_Location

Kyoto

Print_ISBN

978-4-88686-074-3

Type

conf

DOI

10.1109/ISEIM.2011.6826292

Filename

6826292