The Electrorheological Behavior of Suspensions Based on Molten-Salt Synthesized Lithium Titanate Nanoparticles and Their Core–Shell Titanate/Urea Analogues

Abstract

This paper concerns the preparation of novel electrorheological (ER) materials using microwave-assisted synthesis as well as utilizing a suitable shell-providing system with enhanced ER performance. Lithium titanate nanoparticles were successfully synthesized, and their composition was confirmed via X-ray diffraction. Rheological properties were investigated in the absence as well as in the presence of an external electric field. Dielectric properties clarified the response of the particles to the application of an electric field. The urea-coated lithium titanate nanoparticle-based suspension exhibits higher ER performance in comparison to suspensions based on bare particles.

Ionic liquid-based organically modified silica for the development of new electrorheological fluids

“…Indeed, the relaxation time found in the present work was significantly shorter than that reported in the literature for the suspension involving lithium titanate nanoparticle [49]. These results are in agreement with the best ER response of the IL-ORMOSIL 2 -based suspension.…”

“…This value is significantly higher than those found in the literature for the lithium titanate nanoparticle [49] or PILs-based nanoparticles [28][29]. Also the interfacial polarization time (t relax )…”

Enhanced Electroresponse of Alkaline Earth Metal-Doped Silica/Titania Spheres by Synergetic Effect of Dispersion Stability and Dielectric Property

“…19 However, it is important to select an appropriate material and doping level in order to avoid electrical shorts. 7 In other words, an applicable conductivity range must be maintained.…”

Enhanced dielectric and electrorheological properties of needle‐like TiO2/polyrhodanine core/shell hybrid nanostructure

“…These materials are also used as dispersing phase in ER fluids and attracted many scientific and technological researches. 8,9 Shape, size, and morphologies of inorganic core materials and type and thickness of conducting polymer shell can be engineered in a controllable way to enhance the colloidal stability of a dispersion and to observe high ER activity. 10 Several high ER active materials are reported recently by Shen et al based on polar molecule dominated ER dispersion 11 and by Wu et al, based on SiO 2 -titanium oxalate and TiO 2 -titanium oxalate hybrid particles and especially the influence of high dielectric constant core on the ER activity of core/shell structured hybrid materials are discussed.…”