Performance tuning of giant electrorheological fluids by interfacial tailoring

Giant electrorheological (GER) fluids exhibit a high yield stress due to saturation surface polarization from contact between neighboring particles. To fine-tune the competitive performance of GER fluids, we modified the surface of the GER particles by adding silicone polyether, which strongly adsor...

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Bibliographic Details
Published inSoft matter Vol. 14; no. 8; pp. 1427 - 1433
Main Authors Xu, Zhichao, Hong, Yaying, Zhang, Mengying, Wu, Jinbo, Wen, Weijia
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 01.01.2018
Subjects
Contact stresses
Current density
Electric contacts
Electric currents
Electrorheological fluids
Industrial applications
Particulates
Silicone resins
Silicones
Steric hindrance
Tradeoffs
Viscosity
Yield stress
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Summary:Giant electrorheological (GER) fluids exhibit a high yield stress due to saturation surface polarization from contact between neighboring particles. To fine-tune the competitive performance of GER fluids, we modified the surface of the GER particles by adding silicone polyether, which strongly adsorbed at the solid-liquid interface and significantly influenced the dispersion, GER effect and electrical current density of the GER fluid. We discovered that a small amount of silicone polyether could improve the dispersion and reduce the electrical current density of the fluid. However, the steric hindrance effect suppressed the GER performance. Ultimately, an optimal solution was obtained by making tradeoffs among the dispersion, current density, viscosity, anti-sedimentation and ER effect. These tradeoffs were effective because they provided repetitive stability and wide opportunities for industrial usage.
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ISSN:1744-683X
1744-6848
DOI:10.1039/c7sm02355c