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The effect of surface treatment of silica nanoparticles on the breakdown strength of mineral oil

The effect of surface treatment of silica nanoparticles on the breakdown strength of mineral oil
The effect of surface treatment of silica nanoparticles on the breakdown strength of mineral oil
In previous work, the results of AC breakdown tests showed that unmodified silica nanoparticles improve the breakdown strength of mineral oil based nanofluids, especially at a relatively high humidity level of around 25 ppm. It was proposed that, since the hydrophilic surface of unmodified silica nanoparticles can absorb water, this would lead to a reduction of free moisture in the bulk of the oil, which has a strong influence on the breakdown strength. In the present study this proposition is verified, by comparing the breakdown strength of two mineral oil based nanofluids: a reference with unmodified silica nanofluid and a nanofluid with Z-6011 modified silica. The silane coupling agent Z-6011 turns the surface of silica nanoparticles hydrophobic, thus preventing water adsorption.
Jin, Huifei
1b0ff54e-4caf-4213-bb1c-48808ec0d59e
Morshuis, Peter H.F.
52ee8690-43df-4325-b9df-3b02a8deed87
Smit, J.J.
21d902fe-6d70-4dff-ad29-3eb8146c0ea5
Andritsch, Thomas
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Jin, Huifei
1b0ff54e-4caf-4213-bb1c-48808ec0d59e
Morshuis, Peter H.F.
52ee8690-43df-4325-b9df-3b02a8deed87
Smit, J.J.
21d902fe-6d70-4dff-ad29-3eb8146c0ea5
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c

Jin, Huifei, Morshuis, Peter H.F., Smit, J.J. and Andritsch, Thomas (2014) The effect of surface treatment of silica nanoparticles on the breakdown strength of mineral oil. 2014 IEEE 18th International Conference on Dielectric Liquids (ICDL), Slovenia. 29 Jun - 03 Jul 2014. 4 pp . (doi:10.1109/ICDL.2014.6893073).

Record type: Conference or Workshop Item (Paper)

Abstract

In previous work, the results of AC breakdown tests showed that unmodified silica nanoparticles improve the breakdown strength of mineral oil based nanofluids, especially at a relatively high humidity level of around 25 ppm. It was proposed that, since the hydrophilic surface of unmodified silica nanoparticles can absorb water, this would lead to a reduction of free moisture in the bulk of the oil, which has a strong influence on the breakdown strength. In the present study this proposition is verified, by comparing the breakdown strength of two mineral oil based nanofluids: a reference with unmodified silica nanofluid and a nanofluid with Z-6011 modified silica. The silane coupling agent Z-6011 turns the surface of silica nanoparticles hydrophobic, thus preventing water adsorption.

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Published date: 29 June 2014
Venue - Dates: 2014 IEEE 18th International Conference on Dielectric Liquids (ICDL), Slovenia, 2014-06-29 - 2014-07-03
Organisations: EEE

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Local EPrints ID: 369010
URI: http://eprints.soton.ac.uk/id/eprint/369010
PURE UUID: 258795e5-c56e-47f2-b697-eac565fd752d
ORCID for Thomas Andritsch: ORCID iD orcid.org/0000-0002-3462-022X

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Date deposited: 30 Sep 2014 15:45
Last modified: 03 Dec 2019 01:36

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Contributors

Author: Huifei Jin
Author: Peter H.F. Morshuis
Author: J.J. Smit
Author: Thomas Andritsch ORCID iD

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