纳米流体
碳纳米管
流变学
材料科学
化学工程
润滑油
粘度
剪切速率
粘度指数
基础油
复合材料
傅里叶变换红外光谱
纳米颗粒
纳米技术
扫描电子显微镜
工程类
作者
Edwin Espinel Blanco,Roberto Carlos Vázquez Fletes,J. S. Rudas,María Isabel Ardila Marín,Lina Marcela Hoyos Palacio,Jesús Antonio Carlos Cornelio
标识
DOI:10.1080/01932691.2023.2215307
摘要
Nanofluids have attracted a lot of attention since their significant enhancement in thermal properties, however there are few reports on the study of the viscosity of nanofluids from an experimental point of view. In this work, the rheological behavior of functionalized multi-walled carbon nanotubes (F-MWCNTs) and coated with MoS2 (MWCNTs-MoS2) in a commercial palm oil as base fluid was evaluated. The purification and functionalization process of the MWCNTs was performed by acid leaching and investigated by FTIR, and stable nanofluids were prepared with MWCNTs concerning time. The rheological behavior of nanofluids with MWCNTs was performed as a function of temperature at different concentrations (0.1, 0.5 and 1% wt.). The effect of time, temperature, shear rate and shear stress versus shear rate were determined. The results indicate that the nanofluid behaves as a Newtonian fluid independently of the MWCNTs concentrations and temperatures evaluated. The viscosity index increases by 16% at a concentration of 1% wt. of F-MWCNTs and for nanofluids added with MWCNTs-MoS2 had significant effect on the effect of temperature.
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