Rheological non-Newtonian behaviour of ethylene glycol-based Fe2O3 nanofluids

被引：76

作者：

Jose Pastoriza-Gallego, Maria ^{[1
]}

Lugo, Luis ^{[1
]}

Luis Legido, Jose ^{[1
]}

Pineiro, Manuel M. ^{[1
]}

机构：

[1] Univ Vigo, Dept Fis Aplicada, Fac Ciencias, E-36310 Vigo, Spain

来源：

NANOSCALE RESEARCH LETTERS | 2011年 / 6卷

关键词：

nanofluid; rheology; hematite; ferrofluids; storage modulus; loss modulus; nanoparticles; shear thinning; THERMAL-CONDUCTIVITY; HEAT-TRANSFER; VISCOSITY;

D O I：

10.1186/1556-276X-6-560

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The rheological behaviour of ethylene glycol-based nanofluids containing hexagonal scalenohedral-shaped alpha-Fe2O3 (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.

引用

页码：1 / 7

页数：7

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