Publication detail

Influence of clay-based additive on sedimentation stability of magnetorheological fluid

ROUPEC, J. MICHAL, L. STRECKER, Z. KUBÍK, M. MACHÁČEK, O. CHOI, H.

Original Title

Influence of clay-based additive on sedimentation stability of magnetorheological fluid

Type

journal article in Web of Science

Language

English

Original Abstract

Sedimentation stability is one of the most important features of magnetorheological (MR) fluids. Clay-based additives are known for improving the stability of the MR fluids. This article describes the dependency of the clay-based additive concentration on the sedimentation stability and the rheological properties of MR fluids in non activated state (without magnetic field). The sedimentation was measured for two different base oil viscosities, two different carbonyl iron particle sizes, and additive concentration between 2 and 6 wt%. The measurements showed that the sedimentation rate exponentially decreases with the additive concentration, while the yield stress is rising. The measurements of rheological properties also showed the dependency of rheological properties of MR fluid with a clay-based additive on loading history. The influence of carrier fluid viscosity or particle size has a minor effect on the sedimentation in comparison with the clay-based additive. The addition of 6 wt% slows down the sedimentation by more than 3000 times compared to MR fluid without additives. The MR fluid with 4.85% of clay-based additive achieves slightly better sedimentation stability than commercial MR fluid LORD MRF122.

Keywords

organo-clay; additive; MR fluid; sedimentation stability

Authors

ROUPEC, J.; MICHAL, L.; STRECKER, Z.; KUBÍK, M.; MACHÁČEK, O.; CHOI, H.

Released

7. 1. 2021

Publisher

IOP PUBLISHING LTD

Location

BRISTOL

ISBN

0964-1726

Periodical

SMART MATERIALS & STRUCTURES

Year of study

30

Number

2

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

9

Pages count

8

URL

https://iopscience.iop.org/article/10.1088/1361-665X/abd345

BibTex

@article{BUT167470,
  author="ROUPEC, J. and MICHAL, L. and STRECKER, Z. and KUBÍK, M. and MACHÁČEK, O. and CHOI, H.",
  title="Influence of clay-based additive on sedimentation stability of magnetorheological fluid",
  journal="SMART MATERIALS & STRUCTURES",
  year="2021",
  volume="30",
  number="2",
  pages="1--9",
  doi="10.1088/1361-665X/abd345",
  issn="0964-1726",
  url="https://iopscience.iop.org/article/10.1088/1361-665X/abd345"
}