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Rheological non-Newtonian behaviour of ethylene glycol-based Fe2O3 nanofluids
Ist Teil von
Nanoscale research letters, 2011-10, Vol.6 (1), p.560-560, Article 560
Ort / Verlag
New York: Springer New York
Erscheinungsjahr
2011
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
The rheological behaviour of ethylene glycol-based nanofluids containing hexagonal scalenohedral-shaped
α
-Fe
2
O
3
(hematite) nanoparticles at 303.15 K and particle weight concentrations up to 25% has been carried out using a cone-plate Physica MCR rheometer. The tests performed show that the studied nanofluids present non-Newtonian shear-thinning behaviour. In addition, the viscosity at a given shear rate is time dependent, i.e. the fluid is thixotropic. Finally, using strain sweep and frequency sweep tests, the storage modulus
G
', loss modulus
G
″ and damping factor were determined as a function of the frequency showing viscoelastic behaviour for all samples.