Effect of Polar Molecule Urea on TiO2/Urea ER Fluid Properties and Microstructure

Abstract

By way of mechanical properties test and microstructure observation，the effect of Urea on TiO2particles has been researched，it has showed that ER fluid activity of the particles were closely associated with urea content. When the mass ratio of Urea/Ti is 30%, The property of TiO2/Urea particles ER fluid is the best .The microstructure observation of the ER fluids under DC electric field showed that the particles aggregated to form thicker and dense column structure when the mass ratio of Urea/Ti is 30%, while the column structure were broken down when excessive urea/Ti (>30%) was been added.