Effect of Microstructure on Electrorheological Property for Pure Particle Material

Yanli SHANG, Shuzhen MA,Junran LI, Mingxiu LI,Juan WANG and Shaohua ZHANG State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China Department of Chemistry, Hebei Normal University, Shijiazhuang 050091, China Department of Chemistry, Baoding Teacher’s College, Baoding 071051, China School of Vehicle and Transmission Engineering, Beijing Institute of Technology, Beijing 100081, China

摘 要：<正>Pure titanium dioxide （TiO2） particle materials were prepared by hydrolyzing titanium tetrachloride （TiCl4）. The microstructures of these materials were determined by X-ray diffraction （XRD）, accelerated surface area and porosimetry apparatus （BET）, and transmission electron microscopy （TEM）. The TiO2 materials obtained by calcinations under different temperatures distinctly revealed different microstructures in crystal structure type, surface area, pore size, pore volume and grain size. The relationship between the microstructure of the TiO2 materials and their electrorheological （ER） activity was investigated. Anatase titania particles have better ER performance than rutile titania particles. Amorphous TiO2 materials display higher ER activity than the crystalline titania materials. A large pore volume can be more advantageous in improving the ER effect of a particle material.

关键词：