首页|Effect of Acidic-fog on performances of HTV silicone rubber with AC energized
Effect of Acidic-fog on performances of HTV silicone rubber with AC energized
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NSTL
Elsevier
The performance of high temperature vulcanized (HTV) silicone rubber used in composite insulator will be worse in harsh environment. The acid-base pollutants in the environment have a great influence on the performance of silicone rubber. As one of the aging factors of composite insulators, acid corrosion has not been studied deeply. In this paper, the AC charged aging test of the silicone rubber sample in an acid environment was carried out, and then its physicochemical and electrical properties were tested, including microscopic morphology, hydrophobicity, infrared spectroscopy, and electrical strength. The effect trends of duration time, charged voltage and acid pH value on material properties are studied. The results show that under the combined action of acid-fog and voltage, the performance of silicone rubber will be degraded. The smooth structure of the surface of the material is destroyed, the side chains of the polymer are severely cut, and the hydrophobicity becomes worse. The AC flashover voltage along the surface has a power function relationship with the pH value. Continuous deterioration of composite insulators may occur in acid polluted areas for a long time.
NSTL
Elsevier
