The effect of different parameters on ability of the proposed correlations for the rheological behavior of SiO2 -MWCNT (90:10)/SAE40 oil-based hybrid nano-lubricant and presenting five new correlations

Mohammad Hemmat Esfe; Soheyl Alidoust; Erfan Mohammadnejad Ardeshiri; Davood Toghraie

doi:10.1016/j.isatra.2021.10.012

The effect of different parameters on ability of the proposed correlations for the rheological behavior of SiO₂ -MWCNT (90:10)/SAE40 oil-based hybrid nano-lubricant and presenting five new correlations

ISA Trans. 2022 Sep;128(Pt A):488-497. doi: 10.1016/j.isatra.2021.10.012. Epub 2021 Oct 18.

Authors

Mohammad Hemmat Esfe¹, Soheyl Alidoust², Erfan Mohammadnejad Ardeshiri¹, Davood Toghraie³

Affiliations

¹ Department of Mechanical Engineering, Imam Hossein University, Tehran, Iran.
² School of chemistry, Damghan university, Damghan 36716-41167, Iran.
³ Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Iran. Electronic address: Toghraee@iaukhsh.ac.ir.

PMID: 34772506
DOI: 10.1016/j.isatra.2021.10.012

Abstract

In this study, after investigating the rheological behavior and viscosity of SiO₂-MWCNT (90:10)/SAE40 oil-based hybrid nano-lubricant, the theory was studied by response surface methodology (RSM). Experimental results show that viscosity enhancement decreases significantly at a concentration of 0.0625% to -9.22% and at a concentration of 1% with + 48.23% the highest increase of viscosity enhancement is observed. But the main purpose of this study is to present the new two- and three-variable correlation relationships and compare them with each other. The effectiveness of the experimental correlation for predicting the viscosity is investigated. According to the results of the RSM method, in the relations of two variables, the presence of an independent variable of temperature with the volume fraction (φ) has a greater effect compared to using the variable of shear rate (SR) along the φ and increases the accuracy of the mathematical relation.

Keywords: Hybrid nano-lubricant; RSM; Rheological behavior; SiO(2) nanoparticles.