A study on the loss and recovery of hydrophobicity of RTV coating

Author

Jia, Zhidong ; Xie, Hengkun ; Guan, Zhicheng

Author_Institution

State Key Lab. of Electr. Insulation for Power Equip., Xi´´an Jiaotong Univ., China

fYear

1998

fDate

27-30 Sep 1998

Firstpage

623

Lastpage

626

Abstract

Room temperature vulcanizing (RTV) silicone rubber coatings have been applied for improvement of outdoor insulation for more than two decades. They provide good hydrophobicity of insulator surfaces, preventing formation of continuous water films. Unfortunately, this property will be lost temporarily during outdoor service. A similar effect can be also obtained on RTV coated surfaces when subjected to artificial treatment, such as water immersion and corona discharge. Silicone rubber surfaces can also regain the lost hydrophobicity after a certain period of time. In this paper, the mechanisms involved in the loss and recovery of hydrophobicity are discussed

Keywords

insulating coatings; silicone rubber; vulcanisation; corona discharge; outdoor insulation; room temperature vulcanizing silicone rubber coating; surface hydrophobicity; water immersion; Coatings; Corona; Dielectrics and electrical insulation; Laboratories; Power systems; Rubber; Surface contamination; Surface discharges; Surface treatment; Water pollution;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 1998. Proceedings of 1998 International Symposium on

Conference_Location

Toyohashi

Print_ISBN

4-88686-050-8

Type

conf

DOI

10.1109/ISEIM.1998.741820

Filename

741820