Pourpasha Hadi, Zeinali Heris Saeed, Mohammadfam Yaghob
Faculty of Chemical and Petroleum Engineering, University of Tabriz, Tabriz, Iran.
Sci Rep. 2021 May 26;11(1):11064. doi: 10.1038/s41598-021-90625-5.
This research aims of compare the impact of the mass fraction of multi-walled carbon nanotubes (MWCNTs) and titanium dioxide (TiO) nano additive on the tribological and thermophysical attributes of turbine meter oil. These attributes include the average friction coefficient, pressure drop, wear, flash point, pour point, relative viscosity, kinematics viscosity, and viscosity index. The pressure drops and the average friction coefficient inside the copper tube were simulated and compared with experimental results. In this study, for the synthesis of nano lubricants from turbine meter oil as a pure fluid and from MWCNTs and TiO as nano additives in the mass fraction of 0.05, 0.1, 0.2, 0.3, and 0.4 wt.% and from oleic acid and Triton x100 as surfactants were utilized. The results illustrated that the wear depth of copper pins in the presence of nano lubricant with 0.4 wt.% of MWCNTs and 0.1 wt.% TiO was improved by 88.26% and 71.43%, respectively. Increasing 0.3 wt.% of TiO and MWCNTs into the oil caused to improvement in viscosity index. The simulation data and experimental data for the pressure drop were closer together and indicated a minor error that the maximum error is less than 10%.
本研究旨在比较多壁碳纳米管（MWCNTs）和二氧化钛（TiO）纳米添加剂的质量分数对涡轮流量计油的摩擦学和热物理特性的影响。这些特性包括平均摩擦系数、压降、磨损、闪点、倾点、相对粘度、运动粘度和粘度指数。对铜管内的压降和平均摩擦系数进行了模拟，并与实验结果进行了比较。在本研究中，以涡轮流量计油作为纯流体，以质量分数为0.05%、0.1%、0.2%、0.3%和0.4%的MWCNTs和TiO作为纳米添加剂，以及以油酸和吐温x100作为表面活性剂来合成纳米润滑剂。结果表明，在含有0.4%质量分数的MWCNTs和0.1%质量分数的TiO的纳米润滑剂存在下，铜销的磨损深度分别提高了88.26%和71.43%。向油中添加0.3%质量分数的TiO和MWCNTs可使粘度指数得到改善。压降的模拟数据和实验数据更为接近，表明误差较小，最大误差小于10%。
