Experimental Study on Stability of Magnetorheological Fluid by Using of Fe3O4/ Cellulose Nanoparticles

Document Type : Research Article

Authors

1 Young Researchers Club, Science and research Branch, Islamic Azad University, Tehran, Iran

2 استادیار دانشکده مهندسی شیمی ، دانشگاه تهران

Abstract

The magnetorheological fluid is a suspension of magnetizable particles in a base liquid with stabilizer. The rheological properties of these fluids change significantly in the presence of magnetic field. In this study, nanomagnetic iron oxide particles were prepared by using co-precipitation method. X-ray diffraction and scanning electron transmission methods were used to characterize these particles. The magnetic properties of the particles were measured by using a vibrator sample magnetometer. The sedimentation rate for a non-additive fluid was reported to be 70% and when the cellulose was added, it was reported to be 55%. The effect of samples contained nanoparticles iron core-shell in various percentages of 0.5, 1 and 2% of nanoparticles with 3% cellulose were investigated. The results showed that almost all of the samples were completely stable after addition of the nanoparticles in the first three days. The results showed that the sample containing 5% by weight of cellulose and 1% by weight of nanoparticle core-shell by cellulose had high stability during more than a month. The increase in shear stress and yield stress in the optimized sample containing the nanoparticle was also significantly higher than the sample without any additive and it was about 10,000 Pa.

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References

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Amirkabir Journal of Mechanical Engineering
Volume 52, Issue 10
January 2021
Pages 2779-2790

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