A basic study on the effect of voltage stress on a water droplet on a silicone rubber surface

Observations and analyses have been conducted on the behavior of water droplets deposited on the surface of polymer insulators. As an index to characterize the repellency of water droplets on the polymer surface, the contact angle was measured for different situations. Experiments were conducted to...

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Bibliographic Details
Published inIEEE transactions on dielectrics and electrical insulation Vol. 16; no. 1; pp. 116 - 122
Main Authors Fujii, O., Honsali, K., Mizuno, Y., Naito, K.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.02.2009
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Ceramics
contact angle
Coulomb force
Deposition
Dielectrics and electrical insulation
Droplets
electric field
Electrical insulation
Flashover
Insulators
Mathematical analysis
Maxwell stress
Plastic insulation
polymer insulator
Polymers
Rain
Rubber
Silicone rubber
Stress
Stresses
Surface discharges
Voltage
Water droplets
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Summary:Observations and analyses have been conducted on the behavior of water droplets deposited on the surface of polymer insulators. As an index to characterize the repellency of water droplets on the polymer surface, the contact angle was measured for different situations. Experiments were conducted to see the behavior of water droplets of different volumes and their size distribution on silicone rubber. Electric field strength calculation was performed to analyze the effect on water droplets. Finally, effects of the Maxwell stress and the Coulomb's force were compared, to conclude that, even if there is some true charge on the water droplet, the Maxwell stress is predominant.
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ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2009.4784558