Effect of percolation on the deformation of isotropic electrorheological elastomers under external electric fields

Horváth, Barnabás; Guba, Sándor; Balogh, Diána; Jakab, Miklós; Szalai, István

doi:10.1016/j.molliq.2023.123046

Cited by 2 publications

(1 citation statement)

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“…By contrast, a critical concentrat threshold percolation point is observed for the NM-, SM-, and GL-based ER fluids ( 6b). Above the critical concentration, the slope of the complex viscosity becomes st suggesting the onset of percolation and gel-like state [45]. The exact percolation po the NM-, SM-, and GL-based ER fluids were calculated to be 20.…”

Section: Er Activities Of Nm- Sm- and Gl-based Er Fluidsmentioning

confidence: 99%

A Study on Enhanced Electrorheological Performance of Plate-like Materials via Percolation Gel-like Effect

Jekal,

Sa,

Chu

et al. 2023

Gels

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The use of plate-like materials to induce a percolation gel-like effect in electrorheological (ER) fluids is sparsely documented. Hence, we dispersed plate-like materials, namely natural mica, synthetic mica, and glass, as well as their pulverized particles, in various concentrations in silicone oil to form ER fluids. Subsequently, the rheological properties of the fluids were evaluated and compared to identify the threshold concentration for percolating a gel-like state. The shear stress and viscoelastic moduli under zero-field conditions confirmed that plate-like materials can be used to induce percolation gel-like effects in ER fluids. This is because of the high aspect ratio of the materials, which enhances their physical stability. In practical ER investigations, ER fluids based on synthetic mica (30.0 wt%) showed the highest yield stress of 516.2 Pa under an electric field strength of 3.0 kV mm−1. This was attributed to the formation of large-cluster networks and additional polarization induced by the ions. This study provides a practical approach for developing a new type of gel-like ER fluid.

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Section: Er Activities Of Nm- Sm- and Gl-based Er Fluidsmentioning

confidence: 99%