| dc.description.abstract | Polymers have been investigated by many researchers in order to find high performance
insulator formula for specific uses. Polymers can play a significant role as insulating media
because of their excellent physical and chemical properties. Polymeric insulators are increasingly
being used in both distribution and transmission voltage ranges and steadily capture a wider
share of the world market. On the other hand, polymers, such as epoxy resin have some
disadvantages. It is very sensitive if it is used in high temperature, very humid, or area with high
intensity of ultraviolet (UV) radiation, like in Indonesia. In Gresik cement industry, there were
many insulators failed because the surfaces were contaminated by salty pollution layer and they
were wet.
This research was a laboratory study to investigate mechanical performance of insulation
material made from epoxy resin contaminated with artificial industrial pollution. Test material of
epoxy resin was made from diglycidyl ether of bishphenol A (DGEBA) as base material,
methaphenylene diamine (MPDA) as curing agent, silicone rubber and rice husk ash (RHA) as
filler. The dimension of test material was 70 mm x 70mm x 5 mm. Ratio of DGEBA to MPDA
was 1:1, while filler was varied from 10%, 20%, 30%, 40% and 50% of total weight of test
material.
This research was to identify the influences of filler that influenced in accelerated ageing
on performance of epoxy resin isolation material consisting of mechanical strength and hard
value number of the surface.
The results of the research indicated that mechanical tensile strength of test material after
accelerated ageing was better than before accelerated ageing for all filler compositions but hard
value of test material before accelerated ageing was better than after accelerated ageing for all
filler compositions. | en_US |
