DIELECTRIC EVIDENCE FOR THE MATERIAL DESIGN OF ER FLUIDS

• DOI: 10.1142/s0217979296001331
• Publication Date: 2004-10-12T07:05:51Z
• Authors: Tian Hao; Yuanze Xu
• Keywords: Electrorheological fluid; Polyacrylonitrile; Suspension; Dielectric loss

The dielectric and electrorheological measurements of anhydrous ER fluids based upon oxidized polyacrylonitrile zeolite under AC electric field are described It was found that the yield strength not only determined by constant suspensions, but also loss. formulation on Wagner model, which describes polarization heterogeneous dielectrics, employed to predict stress as a function frequency. good agreement between experimental theoretical predictions indicated conductivity dispersed particle constants suspension decisive factors in design fluids. way material is discussed concerning working frequency, rate temperature ranges