Improved Magnetorheological Properties by Using Ionic Liquid as Carrier Liquid of Magnetorheological Fluids

Tong, Yu; Li, Xiaoguang; Zhao, Penghui; Dong, Xufeng; Wu, Zhanjun; Qi, Min

doi:10.3389/fmats.2021.659998

Cited by 20 publications

(7 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ionic liquids and silicone oils with the same viscosity and different surface tensions were used as carrier fluids and compared. Results suggested that ionic liquid-based MRF showed higher shear yield strength and more significant MR effect [23].…”

Section: Introductionmentioning

confidence: 96%

Drying-freeing preparation and property tests on MR fluid with MWCNTs/GO-coated CI particles

Zhou

Yang

et al. 2023

Smart Mater. Struct.

View full text Add to dashboard Cite

The traditional preparation processes for magnetorheological (MR) fluids are complicated and time-consuming, and cannot guarantee the performance of the prepared material, especially for the MR fluid with mixed coated particles. In this study, an improved drying-free preparation method of MR fluids was proposed, which adopts the magnetic separation technology to replace the traditional drying process, and an integrated preparation device for preparing MR fluids was designed on this basis to realize high efficiency and automation. The MR fluid with MWCNTs/GO-coated CI particles was prepared using the designed device, and the test results showed that the drying-free preparation process can save 1/3 of the original preparation time. Then, the zero-field viscosity, yield shear stress and sedimentation rate of the prepared MR fluid were tested and compared with those prepared by the manual preparation methods. Under appropriate proportion of ingredients, the MR fluid prepared by the drying-free process has higher yield shear stress and better sedimentation stability. Therefore, the drying-free preparation process and the integrated preparation device proposed in this study are not only efficient and automated, but also can improve the performance of MR fluids.

show abstract

Section: Introductionmentioning

confidence: 96%

Drying-freeing preparation and property tests on MR fluid with MWCNTs/GO-coated CI particles

Zhou

Yang

et al. 2023

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…These characteristics can be attributed to the appearance and disappearance of chain-like microstructure due to the strength of magnetic dipole-dipole interactions [5,6]. Such characteristics make MRFs have broad application prospects in specific fields such as MRFs smart dampers, shock absorbers, and cancer targeted therapy, etc [7,8].…”

Section: Introductionmentioning

confidence: 99%

Magnetorheological properties of Fe–Co nanoparticles with high saturation magnetization and low coercivity

Du¹,

Zhao²,

Tong³

et al. 2023

Nanotechnology

Self Cite

View full text Add to dashboard Cite

Fe-Co alloys exhibit an excellent saturation magnetization, which makes them become a potential candidate for the high property magnetic particles in magnetorheological fluids (MRFs). How to decrease their coercivity and residual magnetization without sacrificing the saturation magnetization is a crucial problem to be solved. In this study, Fe-Co nanoparticles were prepared by DC arc discharge and further disposed through low temperature annealing in Ar atmosphere. The successful synthesis of Fe-Co nanoparticles was proved by XRD and EDS. The VSM results revealed that the prepared Fe-Co nanoparticles had a saturation magnetization of 208 emu/g, while the coercivity and remanent magnetization were 58 Oe and 5.8 emu/g, respectively. The MR properties of Fe-Co nanoparticles based MRFs (FeCoNP-MRFs) with 10% particles by volume fraction were systematically investigated. The FeCoNP-MRFs showed up to 4.61 kPa dynamic shear stress at 436 kA/m magnetic field and an excellent reversibility. The MR properties of FeCoNP-MRFs were fitted well by Bingham and power law model, and described by Seo-Seo and Casson fluid model. Meanwhile, the sedimentation ratio of FeCoNP-MRFs was still 87.3% after 72 hours, indicating an excellent sedimentation stability.

show abstract

“…MRF [19,20] is an intelligent controlled material composed of magnetic materials, base solution, and additives. The viscosity of MRF can be changed with the variation of an external magnetic field, and this change is reversible, continuous, and can respond to changes in the magnetic field within milliseconds [21][22][23][24]. One of the issues that hinders the development of MRF is the sedimentation of magnetic particles, and numerous scholars have made efforts to address this problem [25,26].…”

Section: Introductionmentioning

confidence: 99%

Research on rheological properties and phenomenological theory-based constitutive model of magnetorheological shear thickening fluids

Zhao,

Wang,

Yuan

et al. 2023

Smart Mater. Struct.

View full text Add to dashboard Cite

This paper investigates the rheological properties of magnetorheological shear thickening fluid (MRSTF) and proposes a phenomenological theory-based constitutive model. Multiple samples with varying mass fractions and particle sizes were prepared. Then, the rheological properties were experimentally studied, including the effects of silicon particle size and concentration, carbonyl iron powder concentration and magnetic field on rheological properties. Next, the sedimentation stability experiment was also carried out by the static observation method. Finally, based on phenomenological theory, a constitutive model called the M-S model was derived through geometric transformation of shear stress curves. The results show that there is an inhibitory relationship between magnetorheological and shear thickening effect, and the correlation between composition and rheological properties was established, which can provide guidance for preparation of MRSTF with required properties. It also shows that the MRSTF under specific preparation scheme could effectively avoid sedimentation, and its performance is clearly superior to traditional materials in terms of sedimentation resistance and damping adjustment. The accuracy and universality of the proposed model are fully verified by fitting shear stress curves and calculating the goodness of fit values. All these investigations can offer an effective guidance for further study of MRSTF in controllable damping equipment development.

show abstract

Improved Magnetorheological Properties by Using Ionic Liquid as Carrier Liquid of Magnetorheological Fluids

Cited by 20 publications

References 24 publications

Drying-freeing preparation and property tests on MR fluid with MWCNTs/GO-coated CI particles

Drying-freeing preparation and property tests on MR fluid with MWCNTs/GO-coated CI particles

Magnetorheological properties of Fe–Co nanoparticles with high saturation magnetization and low coercivity

Research on rheological properties and phenomenological theory-based constitutive model of magnetorheological shear thickening fluids

Contact Info

Product

Resources

About