Effect on the electrical properties of fillers in silicone rubber for outdoor insulation

• Published in: Proceedings of 1998 International Symposium on Electrical Insulating Materials. 1998 Asian International Conference on Dielectrics and Electrical Insulation. 30th Symposium on Electrical Insulating Ma pp. 465 - 468
• Main Authors: Koshino, Y., Nakajima, I., Umeda, I.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 1998
• Subjects: Absorption; Dielectric loss measurement; Dielectrics and electrical insulation; Insulation life; Mechanical factors; Plastic insulation; Polymers; Rubber; Viscosity; Water
• DOI: 10.1109/ISEIM.1998.741783
• ISBN: 9784886860507; 4886860508

The effect on the electrical properties of adding CaCO/sub 3/ filler to silicone rubbers for outdoor insulation was investigated. Silicone rubber specimens were prepared by adding CaCO/sub 3/ and ATH as fillers in specified ratio to silicone base gum. The blend ratio of ATH and CaCO/sub 3/ in silicone rubber specimens was changed from 100:0 to 63:37. Dry arc, tracking and erosion resistance performances, and the water absorption-dielectric properties relation were mainly studied. The results of increasing the amount of CaCO/sub 3/ were an increase in the rate of water absorption, reduction of dry arc, tracking, erosion resistance performances and dielectric strength after water immersion.