Synthesis and characterization of novel flake-shaped carbonyl iron and water-based magnetorheological fluids using laponite and oleic acid with enhanced sedimentation stability
| Autor: | Chiranjit Sarkar, Chandra Shekhar Maurya |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Sedimentation (water treatment)
Mechanical Engineering Flake 02 engineering and technology Dynamic mechanical analysis 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Water based 0104 chemical sciences Oleic acid chemistry.chemical_compound Carbonyl iron Chemical engineering chemistry Pulmonary surfactant Magnetorheological fluid General Materials Science 0210 nano-technology |
| Zdroj: | Journal of Intelligent Material Systems and Structures. 32:1624-1639 |
| ISSN: | 1530-8138 1045-389X |
| DOI: | 10.1177/1045389x20987001 |
| Popis: | In this study, micron-sized flake shaped carbonyl iron (CI) water-based MR fluids were prepared with adding laponite and oleic acid as an additive and surfactant, respectively. The MR suspensions are comprised of the fixed CI particles and water weight %, while weight % of laponite and oleic acid changes from 1 to 3 wt% and 0.5 to 1.5 wt%, respectively. The remarkable enhancement in magnetorheological properties was obtained with improved sedimentation stability for CI/water MR suspensions with the addition of laponite and oleic acid. It was found that at the lowest magnetic field strength, the higher laponite concentration is effective, while at the highest magnetic field strength, the smaller concentration was effective. It was because of the combined effect of the field-induced CI chains and the laponite clay gel network. Its storage moduli showed a stable plateau area for whole angular frequencies, suggesting distinguished solid-like behavior of the MR fluid. Finally, a novel correlation was obtained between the initial settling rate of the CI particles and magnetorheological behavior of CI/laponite/OA MR suspensions with 1 wt% laponite and 0.5 wt% oleic acid, which has less zero-field, high on-state shear stress with enhanced sedimentation stability. The prepared MR fluids are a reliable industrial application vibration-isolation, clutch, and brake. |
| Databáze: | OpenAIRE |
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