Title :
Tracking and erosion resistance and hydrophobicity of HTV silicone rubber for outdoor insulators
Author :
Han, D.H. ; Park, H.Y. ; Kang, D.P. ; Min, K.E.
Author_Institution :
Korea Electrotechnol. Res. Inst., Changwon, South Korea
Abstract :
The paper reports a study of the influence of silicone oils on the tracking and erosion resistance and hydrophobicity of HTV silicone rubber. Two silicone oils (A, B) having different chemical structure are selected with consideration of good hydrophobicity and processability. Tracking and erosion resistance of HTV silicone rubber are investigated by the rotating wheel dip test (RWDT). In this test, tracking and erosion areas due to glow and partial arc discharges cause an increase in leakage current with time. The leakage current of silicone rubber decreases with increasing ratio of oil A/B. HTV SR is exposed to corona discharges in air and the specimens are analyzed by contact angle measurements. It is observed that the contact angle of silicone rubber increases gradually with time. The recovery of hydrophobicity increases with increasing ratio of oil A/B
Keywords :
arcs (electric); contact angle; corona; glow discharges; insulator testing; leakage currents; silicone rubber insulators; wear resistance; HTV silicone rubber; chemical structure; contact angle measurements; corona discharges; erosion resistance; glow discharges; hydrophobicity; hydrophobicity recovery; leakage current; outdoor insulators; partial arc discharges; processability; rotating wheel dip test; silicone oils; tracking; Arc discharges; Chemical processes; Corona; Leakage current; Oils; Petroleum; Rubber; Strontium; Testing; Wheels;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2000. Proceedings of the 6th International Conference on
Conference_Location :
Xi´an
Print_ISBN :
0-7803-5459-1
DOI :
10.1109/ICPADM.2000.875703
