Accelerated Aging Effect on Epoxy-polysiloxane-Rice Husk Ash Polymeric Insulator Material
Abstract: The performances of
outdoor polymeric insulators are influenced by environmental conditions. The
use of polymeric materials in a particular composition can be produced
insulators that are resistant to environmental influences. This paper presents
the effect of artificial tropical climate on the hydrophobicity, equivalent
salt deposit density (ESDD), surface leakage current, flashover voltage, and
surface degradation on epoxy-polysiloxane polymeric insulator materials with
rice husk ash (RHA). Test samples are made at room temperature vulcanized (RTV)
of various composition of epoxy-polysiloxane with rice husk ash as filler. The
aging was carried out in test chamber at temperature from 50oC to 62oC,
relative humidity of 60% to 80%, and ultraviolet (UV) radiation 21.28 w/cm2 in
daylight conditions for 96 hours. The experiment results showed that the
flashover voltage fluctuates from 34.13 kV up to 40.92 kV and tends to decrease
on each variation of material composition. The surface leakage current
fluctuates and tends to increase. Test samples with higher filler content
result greater hydrophobicity, smaller equivalent salt deposit density, and
smaller critical leakage current, which caused the increase of the flashover
voltage. Insulator material (RTVEP3) showed the best performance in tropical
climate environment. Artificial tropical aging for short duration gives less
effect to the surface degradation of epoxy-polysiloxane insulator material.
Author: Tumiran, Arif Jaya,
Hamzah Berahim, Rochmadi
Journal Code: jptkomputergg120095
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