Electrorheological properties of TiO2/ZnC2O4 nanocomposites

Fenghua Liu; Gaojie Xu; Jinghua Wu; Yuchuan Cheng; Jianjun Guo; Ping Cui

doi:10.1117/12.843422

20 October 2009 Electrorheological properties of TiO₂/ZnC₂O₄ nanocomposites

Fenghua Liu, Gaojie Xu, Jinghua Wu, Yuchuan Cheng, Jianjun Guo, Ping Cui

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74936C (2009) https://doi.org/10.1117/12.843422
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

Abstract

TiO₂/ZnC₂O₄ nanocomposites were synthesized by means of co-precipitation method. The XRD, SEM, FTIR and DTA/TG were used to determine the structure of the nanocomposites. The electrorheological (ER) activity of the suspension of TiO₂/ZnC₂O₄ dispersed in silicone oil was investigated under a dc electric field. An excellent ER effect was found. Under 5 kV/mm external electric field, the yield stress of the TiO₂/ZnC₂O₄ suspension can reach up to 90 kPa, and the leaking electric current density is lower than 20 μA/cm². The yield stresses exhibit a near linear dependence on applied electric field unlike the conventional fluids. The results demonstrate that the polar molecules such as hydroxyl groups and oxalate groups adsorbed on the particles play a decisive role in determining the characteristics of the ER fluids.

Citation Download Citation

Fenghua Liu, Gaojie Xu, Jinghua Wu, Yuchuan Cheng, Jianjun Guo, and Ping Cui "Electrorheological properties of TiO₂/ZnC₂O₄ nanocomposites", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74936C (20 October 2009); https://doi.org/10.1117/12.843422

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