Effect of surfactant on the dielectric and electrorheological properties of zinc borate/silicone oil dispersions

Omer Yunus Gumus; Halil Ibrahim Unal

doi:10.1007/s12613-019-1853-2

Volume 26 Issue 12

Dec. 2019

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2019 > 26(12): 1523-1530

Omer Yunus Gumusand Halil Ibrahim Unal, Effect of surfactant on the dielectric and electrorheological properties of zinc borate/silicone oil dispersions, Int. J. Miner. Metall. Mater., 26(2019), No. 12, pp. 1523-1530. https://doi.org/10.1007/s12613-019-1853-2

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Omer Yunus Gumusand Halil Ibrahim Unal, Effect of surfactant on the dielectric and electrorheological properties of zinc borate/silicone oil dispersions, Int. J. Miner. Metall. Mater., 26(2019), No. 12, pp. 1523-1530. https://doi.org/10.1007/s12613-019-1853-2

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Research Article

Effect of surfactant on the dielectric and electrorheological properties of zinc borate/silicone oil dispersions

Omer Yunus Gumus^1, and
Halil Ibrahim Unal²

+ Author Affiliations

Corresponding author:
Omer Yunus Gumus E-mail: omer.gumus@btu.edu.tr
Received: 16 January 2019; Revised: 16 April 2019; Accepted: 18 April 2019

Abstract

Abstract

Zinc borate (ZB) particles dispersed in silicone oil (SO) at concentrations of φ=5vol%-20vol% were subjected to dielectric analysis to elucidate their polarization strength, time, and mechanism. Results revealed that all virgin dispersions lacked polarization. Triton X-100, a non-ionic surfactant, was added to ZB/SO dispersions to enhance the polarizability of ZB particles. The addition of 1vol% Triton X-100 enhanced the polarizability of ZB/SO dispersions, and the 15vol%ZB/SO system provided the highest dielectric difference Δε' (the difference in ε' values at zero and infinite frequency, Δε'=ε₀-ε_µ) of 3.64. The electrorheological (ER) activities of the ZB/SO/Triton-X dispersion system were determined through the ER response test, and viscoelastic behaviors were investigated via oscillation tests. A recoverable deformation of 36% under an applied electrical field strength of 1.5 kV/mm was detected through creep and creep recovery tests.
- zinc borate;
- electrorheological fluids;
- dielectric analysis;
- surfactant

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