Effect of surfactant on the dielectric and electrorheological properties of zinc borate/silicone oil dispersions
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, cilt.26, sa.12, ss.1523-1530, 2019 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 26 Sayı: 12
- Basım Tarihi: 2019
- Doi Numarası: 10.1007/s12613-019-1853-2
- Dergi Adı: INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1523-1530
- Anahtar Kelimeler: zinc borate, electrorheological fluids, dielectric analysis, surfactant
- Gazi Üniversitesi Adresli: Evet
Özet
Zinc borate (ZB) particles dispersed in silicone oil (SO) at concentrations of phi = 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 Delta epsilon ' (the difference in epsilon ' values at zero and infinite frequency, Delta epsilon ' = epsilon(0) - epsilon(221D)) 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.