Title :
Recovery of hydrophobicity of nylon aged by heat and saline water
Author :
Tokoro, Tetsuro ; Hackam, Reuben
Author_Institution :
Dept. of Electr. Eng., Windsor Univ., Ont., Canada
Abstract :
The recovery of hydrophobicity of nylon insulators after aging by long exposure to a stress of saline water at different temperatures is investigated. The hydrophobicity is determined by measuring the contact angle of a droplet of distilled water on nylon. The aging of nylon was performed by immersing it for up to 336 h in saline water solutions in the range 5.0-105 μS/cm. The aging temperatures were 0 to 98°C. After aging, the specimens were kept in air at room temperature for up to 4500 h during which the recovery of hydrophobicity and weight changes were measured. Specimens were also kept in high vacuum for 20 h to determine the changes in the contact angle and in the weight with the absence of air
Keywords :
ageing; contact angle; electric breakdown; insulator testing; organic insulating materials; polymers; 0 to 98 C; 20 h; 336 h; 4500 h; 5 to 1E5 muS/cm; aging; contact angle; hydrophobicity recovery; nylon insulators; saline water; weight changes; Absorption; Aging; Biological tissues; Goniometers; Heat recovery; Reproducibility of results; Solids; Temperature; Water heating; Weight measurement;
Conference_Titel :
Electrical Insulation, 1996., Conference Record of the 1996 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-3531-7
DOI :
10.1109/ELINSL.1996.549337
