Enhancing Effect of Fe3O4/Nanolignocelluloses in Magnetorheological Fluid.

Langmuir : the ACS Journal of Surfaces and Colloids
Li ShixuQi Song

Abstract

Magnetorheological fluid (MRF) is an intelligent material, which can be controlled by an external magnetic field. It is widely used in damping, finishing, mechanical transmission, sealing, and other engineering fields due to its magnetorheological (MR) effect. However, despite decades of research and experimental development, the wide application of MRF is still restricted by its serious settlement problem owing to the density difference between the magnetic particles and carrier liquid. Here, using the coprecipitation method, a kind of Fe3O4-modified nanolignocellulose (Fe3O4/NLC) composite fiber was characterized by its unique advantages such as low density, soft magnetism property, and high specific surface. These Fe3O4/NLCs were used as a kind of reinforcing particle with carbonyl iron powder in the new bidisperse MRF system. The performances of MRF samples were enhanced by these superior properties. We found that all MRF samples with composite fibers exhibited excellent antisettlement and dynamic mechanical characteristics and cooperativity between Fe3O4 and NLCs. Furthermore, redispersibility of MRF is qualitatively evaluated by a shearing test in this paper, explaining the high property of antihardening. This composite f...Continue Reading

References

Mar 29, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Young Jae KimHyoung Jin Choi
Jan 18, 2018·Lab on a Chip·Dan YuanWeihua Li
Aug 27, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Lei PeiXinglong Gong
Jun 11, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Zhiwei DuHongbo Zeng

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