Shear-thickening behavior of polymethylmethacrylate particles suspensions in glycerine–water mixtures

Jiang, Wanquan; Sun, Yingqiang; Xu, Yulei; Peng, Chao; Gong, Xinglong; Zhang, Zhong

doi:10.1007/s00397-010-0486-1

Cited by 76 publications

(43 citation statements)

References 26 publications

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“…Studies present in literature report thickening behaviour observed for particles with a dimension range from 1 nm to 5000 nm [19]. Another important effect is given from the shape of the dispersed phase, however, in case of irregular particles, it is more difficult to understand the energy dispersion mechanism due to the superimposition of the thickening effect and the reciprocal friction between the inclusions [20].…”

Section: Theoretical Aspectsmentioning

confidence: 99%

Design and Manufacturing of a Novel Shear Thickening Fluid Composite (STFC) with Enhanced out-of-Plane Properties and Damage Suppression

Pinto

Meo

2016

Appl Compos Mater

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The ability to absorb a large amount of energy during an impact event without generating critical damages represents a key feature of new generation composite systems. Indeed, the intrinsic layered nature of composite materials allows the embodiment of specific hybrid plies within the stacking sequence that can be exploited to increase impact resistance and damping of the entire structure without dramatic weight increase. This work is based on the development of an impact-resistant hybrid composite obtained by including a thin layer of Non-Newtonian silica based fluid in a carbon fibres reinforced polymer (CFRP) laminate. This hybrid phase is able to respond to an external solicitation by activating an order-disorder transition that thickens the fluid increasing its viscosity, hence dissipating the energy impact without any critical failure. Several Shear Thickening Fluids (STFs) were manufactured by changing the dimensions of the particles that constitute the disperse phase and their concentrations into the continuous phase. The dynamic viscosity of the different STFs was evaluated via rheometric tests, observing both shear thinning and shear thickening effects depending on the concentration of silica particles. The solutions were then embedded as an active layer within the stacking sequence to manufacture the hybrid CFRP laminates with different embedded STFs. Free vibration tests were carried out in order to assess the damping properties of the different laminates, while low velocity impact tests were used to evaluate their impact properties. Results indicate that the presence of the non-Newtonian fluid is able to absorb up to 45 % of the energy during an impact event for impacts at 2.5 m/s depending on the different concentrations and particles dimensions. These results were confirmed via C-Scan analyses to assess the extent of the internal delamination.

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Section: Theoretical Aspectsmentioning

confidence: 99%

Design and Manufacturing of a Novel Shear Thickening Fluid Composite (STFC) with Enhanced out-of-Plane Properties and Damage Suppression

Pinto

Meo

2016

Appl Compos Mater

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“…The hammer is dropped from a fixed heights to impact the targets in two energy levels namely, 24 J and 36 J. The depth of penetration of into the targets is quantified in terms of the number of witness paper layers penetrated by the impactor [11][12][13][14][15] . Two sets of experiments were performed for each target.…”

Section: Impact Testsmentioning

confidence: 99%

Investigation on Impact Strength Properties of Kevlar Fabric using Different Shear Thickening Fluid Composition

Joselin¹,

Wilson²

2014

DSJ

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“…To fully explore the ST mechanism, much effort has been conducted on studying the parameters that determine the form and extent of ST. Various parameters such as the dispersed particles, medium [1,13,14], volume fraction [1,13], and additives [15][16][17][18] were systematically discussed.…”

Section: Introductionmentioning

confidence: 99%

Shear thickening of suspensions of porous silica nanoparticles

Gong

Xuan

et al. 2015

J Mater Sci

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In this work, shear thickening (ST) performance of a novel suspension of porous silica nanoparticles was systematically studied. The porous silica nanoparticles which were synthesized by using CTAB as a pore-forming agent were dispersed into ethylene glycol to form shear thickening fluid (STF). Both the steady and oscillatory shear rheological properties of the STF were characterized. The STF showed distinct ST effects when the concentration of the porous nanoparticles was only 42.5 wt%. This value was much lower than the previously reported STF prepared by non-porous particles. The viscosity increased from 0.80 to 14.3 Pa s by increasing the shear rate from 0.1 to 49.4 s -1 , while a noticeable overall downward trend with a high initial viscosity was found in the prepared suspension of non-porous silica. The results indicated that porous nature of the silica nanoparticles could remarkably influence the ST effect. A possible enhancing mechanism was proposed and it was found that the difference of macroscopic rheology behavior was mainly according to interfacial interaction between the porous silica nanoparticles. This work provided valuable information for understanding the relationship between the porous characteristics and ST behavior.

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Shear-thickening behavior of polymethylmethacrylate particles suspensions in glycerine–water mixtures

Cited by 76 publications

References 26 publications

Design and Manufacturing of a Novel Shear Thickening Fluid Composite (STFC) with Enhanced out-of-Plane Properties and Damage Suppression

Design and Manufacturing of a Novel Shear Thickening Fluid Composite (STFC) with Enhanced out-of-Plane Properties and Damage Suppression

Investigation on Impact Strength Properties of Kevlar Fabric using Different Shear Thickening Fluid Composition

Shear thickening of suspensions of porous silica nanoparticles

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