NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2018, 9 (6), P. 746–753
Influence of thermal treatment of nanometer-sized titanate and barium orthotitanate precursors on the electrorheological effect
K.V. Ivanov – G. A. Krestov Institute of Solution Chemistry, RAS, Ivanovo, Russia
A.V. Agafonov – G. A. Krestov Institute of Solution Chemistry, RAS, Ivanovo, Russia; ava@iscras.ru
A. E. Baranchikov – Kurnakov Institute of General and Inorganic Chemistry, RAS, Moscow, Russia
V. K. Ivanov – Kurnakov Institute of General and Inorganic Chemistry, RAS, Moscow, Russia
S. A. Kozyukhin – Kurnakov Institute of General and Inorganic Chemistry, RAS, Moscow, Russia
E.V. Fatyushina – Kurnakov Institute of General and Inorganic Chemistry, RAS, Moscow, Russia
V.V. Kozik – National Research Tomsk State University, Tomsk, Russia
The results for the sol-gel synthesis of acylate gels are reported in the titanium tetra-n-butoxide – barium hydroxide – acetic acid system at a molar ratio of Ba:Ti components of 1:1 and 2:1. The thermal decomposition of these gels over temperatures ranging from 85 –1200 °C was investigated using thermal analysis methods, XRD, FTIR spectroscopy, electron microscopy, and dielectrometry at frequencies from 25 – 106 Hz. The electrorheological effect in suspensions of powders synthesized at different temperatures with a stoichiometric Ba:Ti ratio = 1:1 and 2:1, in polydimethylsiloxane was studied. The influence of thermal gel treatment was analyzed on their dielectric properties as fillers of electrorheological fluids and on the magnitude of the electrorheological effect.
Keywords: sol-gel synthesis, barium titanate, electrorheological fluids, dielectric liquids, nanometer-sized, thermal treatment.
PACS 61.46.+w, 77.22.d, 82.45.Vp, 82.80.d
DOI 10.17586/2220-8054-2018-9-6-746-753