Title :
Hydrophobicity of organic insulating materials
Author :
Ishii, M. ; Komatsubara, M.
Author_Institution :
Inst. of Ind. Sci., Tokyo Univ., Japan
Abstract :
The contact angle and the time for a water film to be formed on a surface are measured to investigate the hydrophobicity of UV (ultraviolet) irradiated materials. Ethylene propylene rubber and silicone rubber, both commonly used for graphic organic insulators, were adopted as specimens. For comparison, polyethylene and polymethylmethacrylate were also tested. The correlation between UV irradiation time and the time to the formation of a water film under fog is shown. It is found that the contact angle is closely related to the formation of a conductive film on a surface. It is concluded that the measurement of the contact angle seems to be an effective method to evaluate the hydrophobicity of materials in spite of its simplicity
Keywords :
contact angle; polymers; radiation effects; rubber; surface tension measurement; wetting; H2O; PMMA; UV irradiated materials; conductive film; contact angle; ethylene propylene rubber; fog; graphic organic insulators; hydrophobicity; organic insulating materials; polyethylene; polymethylmethacrylate; silicone rubber; Conducting materials; Goniometers; Insulation; Lamps; Organic materials; Pollution measurement; Sea surface; Surface contamination; Thermal degradation; Time measurement;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1988. Annual Report., Conference on
Conference_Location :
Ottawa, Ont.
DOI :
10.1109/CEIDP.1988.26321
