| Autor: |
Mpitloane J. Hato, Hyoung Jin Choi, Suprakas Sinha Ray, Byung O. Park, Hyung Hoon Sim |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 377:103-109 |
| ISSN: |
0927-7757 |
| DOI: |
10.1016/j.colsurfa.2010.12.029 |
| Popis: |
Soft magnetic carbonyl iron (CI) based magnetorheological (MR) fluids containing three different loadings of submicron-sized organoclay were prepared. The MR characteristics were measured via rotational and oscillatory tests, in which the flow curves exhibited a non-Newtonian behaviour for all investigated samples. The dynamic yield stress change was measured as a function of magnetic field strength by adopting a linear fit of the relation of log (τy) proportional to log (H), which was originally applied for electrorheological fluids. The viscoelastic performances of the pure CI suspension and the CI/organoclay suspensions showed the existence of a solid-like character. The sedimentation ratio was also investigated to confirm the role of sub-micron organoclay particles on the MR properties, in which the dispersion stability of pure CI was improved with increasing the content of organoclay in the CI suspension. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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