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01305 am a22001573u 4500 |
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268351 |
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|a Hosier, I.L.
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|a Vaughan, A.S.
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|a Sutton, S.J.
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|a Cooper, J.
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|a An Ageing Study of Blends of Dodecylbenzene and Mineral Oil
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|c 2009-12.
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|z Get fulltext
|u https://eprints.soton.ac.uk/268351/1/IEEE_Paper.pdf
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|a The practice of backfilling existing paper/mineral oil insulated cables with dodecylbenzene (DDB) in the UK has produced systems where the fluid phase is, in reality, a mixture of these two oil types. This investigation therefore set out to study the ageing behavior of a range of DDB/mineral oil blend systems. Samples ranging in composition from 100% mineral oil to 100% DDB were aged in air (oxidising) and nitrogen (inert) atmospheres and the resulting systems were analyzed using a range of physical and chemical techniques. All approaches produced a consistent picture, demonstrating that the addition of between 10 and 25 % of mineral oil to DDB significantly improves its resistance to ageing under the various conditions imposed in this study. Such blend systems exhibit a combination of properties that renders them superior to either mineral oil or DDB alone.
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