Shear-thickening behavior of Aerosil® R816 nanoparticles suspensions in polar organic liquids

Galindo-Rosales, Francisco J.; Rubio-Hernández, F.J.; Velázquez-Navarro, J. F.

doi:10.1007/s00397-009-0367-7

Cited by 85 publications

(38 citation statements)

References 30 publications

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“…In colloidal suspensions of silica particles, the shear thickening phenomenon is reversible and the return to the initial state takes place in only a few seconds [9,16]. Hysteresis is negligible [10,28].…”

Section: Stress Sweep Testsmentioning

confidence: 98%

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Energy dissipation in concentrated monodisperse colloidal suspensions of silica particles in polyethylene glycol

Soutrenon

Michaud

2014

Colloid Polym Sci

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Highly concentrated colloidal suspensions exhibit a discontinuous shear-thickening behaviour. The transition from a low to a high viscosity state is associated to a large energy dissipation. This effect could find applications in structural damping while the viscosity increase brings added stiffness. In the present work, highly concentrated suspensions of monodisperse spherical silica particles in polyethylene glycol were selected for their strong thickening at low critical shear rates. Their damping properties were characterized by measuring the energy dissipated per cycle at low frequency (below 2 Hz) during oscillatory tests using a rheometer. The influence of parameters such as particle concentration, size and frequency was investigated. Damping was found to overcome that of benchmark elastomeric materials only in high frequencies and high strain domains.

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Section: Stress Sweep Testsmentioning

confidence: 98%

“…At rest, STF develop a physically bonded particle network structure [16]. This weak three-dimensional network is due to the stabilization of the particles in solution under electrostatic and Brownian forces, and it is easily broken by stirring the suspension.…”

Section: Introductionmentioning

confidence: 99%

Energy dissipation in concentrated monodisperse colloidal suspensions of silica particles in polyethylene glycol

Soutrenon

Michaud

2014

Colloid Polym Sci

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“…It is shown in Figure 1 (Galindo-Rosales et al, 2009;Galindo-Rosales et al, 2011), where a slight shear thinning behaviour exists under low shear rate (zone 1). However, when the shear rate exceeds a critical shear rate ηc, the viscosity of STF increases rapidly with shear rate (zone 2) (Galindo-Rosales et al, 2011).…”

Section: Shear-thickening Effect Of Non-newtonian Fluidmentioning

confidence: 89%

Experimental study on shear thickening polishing method for curved surface

Lyu

Dong

Yuan

et al. 2017

IJNM

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Abstract:A new polishing method shear thickening polishing (STP) was proposed to improve the polishing efficiency in the process to obtain extremely smooth curved surfaces. A non-Newtonian fluid with shear thickening property was utilised as the base fluid of the polishing slurry, in which the abrasives were dispersed. In this study, the influence of polishing speed, abrasive concentration and abrasive size on the surface roughness and material removal rate were investigated by experiments. The experimental results revealed that the polishing speed has the greatest influence on the polishing effect. With the increase of the polishing speed, the material removal rate increases rapidly and smoother surfaces with better roughness can be obtained. Abrasive concentration affects the polishing results in a manner that is similar to polishing speed. Abrasive size seems to have no effect on the surface roughness, but material removal rate increases as the abrasive size decreases. Finally, surface roughness of bearing steel work-piece (Ø35 mm) was reduced rapidly from Ra = 105.95 nm to Ra = 6.99 nm after one hours' processing under the appropriate conditions. Keywords: polishing; non-Newtonian fluid; shear thickening; curved surface. 82 B. Lyu et al.Reference to this paper should be made as follows: Lyu, B., Dong, C., Yuan, J., Sun, L., Li, M. and Dai, W. (2017) Min Li is currently a PhD candidate in National Engineering Research Center for High Efficiency Grinding, Hunan University. His current research is curved surface polishing.Weitao Dai is currently a Master student of Ultra-Precision Machining Centre, Zhejiang University of Technology. His main field of study is curved surface polishing utilising non-Newtonian fluid. This paper is a revised and expanded version of a paper entitled 'Experimental study on shear thickening polishing method for curved surface' presented at

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“…Several previous investigations attempted to relate the shear thickening effect of STFs under steady shear conditions to those under dynamic (oscillatory) shear conditions using the Modified Cox-Merz theory (MCM) [24,[33][34][35], mathematically represented as:…”

Section: Validity With the Modified Cox-merz Rulementioning

confidence: 99%

Comparison of rheological behaviors with fumed silica-based shear thickening fluids

Moriana

Tian

Sencadas

et al. 2016

Korea-Aust. Rheol. J.

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Shear thickening fluids (STFs) of differing compositions were fabricated and characterised in order to observe the effect of varying chemical and material properties on the resultant rheological behavior. Steady shear tests showed that for a given carrier fluid and particle size exists an optimum weight fraction which exhibits optimal shear thickening performance. Testing also showed that increasing particle size resulted in increased shear thickening performance and its onset whilst altering the carrier fluid chemistry has a significant effect on the thickening performance. An explanation is provided connecting the effect of varying particle size, carrier fluid chemistry and weight fraction to the resultant rheological behavior of the STFs. Two STFs were chosen for further testing due to their improved but contrasting rheological behaviors. Both STFs displayed a relationship between steady and dynamic shear conditions via the Modified Cox-Merz rule at high strain amplitudes (γ0 ≥ 500%). Understanding the effects of particle and liquid polymer chemistry on the shear thickening effect will assist in 'tailoring' STFs for certain potential or existing applications. AbstractShear thickening fluids (STFs) of differing compositions were fabricated and characterised in order to observe the effect of varying chemical and material properties on the resultant rheological behavior. Steady shear tests showed that for a given carrier fluid and particle size exists an optimum weight fraction which exhibits optimal shear thickening performance. Testing also showed that increasing particle size resulted in increased shear thickening performance and its onset whilst altering the carrier fluid chemistry has a significant effect on the thickening performance. An explanation is provided connecting the effect of varying particle size, carrier fluid chemistry and weight fraction to the resultant rheological behavior of the STFs. Two STFs were chosen for further testing due to their improved but contrasting rheological behaviors.Both STFs displayed a relationship between steady and dynamic shear conditions via the Modified Coz-Merz rule at high strain amplitudes ( 0 ≥ 500%). Understanding the effects of particle and liquid polymer chemistry on the shear thickening effect will assist in 'tailoring' STFs for certain potential or existing applications.

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Shear-thickening behavior of Aerosil® R816 nanoparticles suspensions in polar organic liquids

Cited by 85 publications

References 30 publications

Energy dissipation in concentrated monodisperse colloidal suspensions of silica particles in polyethylene glycol

Energy dissipation in concentrated monodisperse colloidal suspensions of silica particles in polyethylene glycol

Experimental study on shear thickening polishing method for curved surface

Comparison of rheological behaviors with fumed silica-based shear thickening fluids

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