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A HIGHLY ACTIVE ELECTRORHEOLOGICAL MATERIAL, NANO-SIZED BOEHMITE: INFLUENCE OF HYDROXYL ON ITS ELECTRORHEOLOGICAL PROPERTY.
- Source :
-
Chemical Engineering Communications . May2010, Vol. 197 Issue 5, p684-691. 8p. 1 Black and White Photograph, 6 Graphs. - Publication Year :
- 2010
-
Abstract
- A highly active electrorheological (ER) material, nano-sized boehmite, AlO(OH), has been obtained. The relative shear stress (τr = τE/τ0, τ0 and τE are the shear stresses at the electric field strength of 0 kV/mm and 4.2 kV/mm, respectively) of the suspension (25 wt.%) in silicone oil reached 212 at a shear rate of 14.5 s-1 and a DC electric field. The dielectric property, conductivity, surface energy, microstructure, and composition of boehmite [AlO(OH)] and alkaline alumina containing both AlO(OH) and Al2O3 have been studied. The results showed that the hydroxyl group plays a critical role in influencing the ER activity of the material by changing the dielectric property and conductivity of the material. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00986445
- Volume :
- 197
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Chemical Engineering Communications
- Publication Type :
- Academic Journal
- Accession number :
- 47194269
- Full Text :
- https://doi.org/10.1080/00986440903287809