Cutting fluids play an important role in machining processes to provide lubrication and cooling action. However, conventional cutting fluids put a risk to the environment and operator health. This paper attempts to develop and characterize a novel sustainable and eco-friendly cutting fluid for machining applications. Jatropha oil-based Al₂O₃ and ZrO nanoparticles dispersed nanofluids with varying concentrations were developed and characterized for their rheological, thermal, and wettability properties. The viscosity studies were carried out at a temperature ranging from 303 K to 393 K, whereas thermal properties were investigated at room temperature. The wettability studies were carried out by measuring the angle of contact between the droplet of fluid and the tungsten carbide (WC) substrate interface. The experimental results showed that nanofluid's thermophysical properties (i,e viscosity, wettability, and thermal properties) were better than the base oil. The viscosity studies showed the best results with Al₂O₃ (1% weight) dispersed nanofluids, whereas thermal properties showed ZrO (0.5% weight) dispersed nanofluids to be most efficient. The wettability studies showed the best results with hybrid nanofluid (0.5% weight). LCA study has shown that Jatropha-based nanofluids have a less adverse effect on the environment than conventional cutting fluids.

切削液在加工过程中起着重要作用，可提供润滑和冷却作用。然而，传统的切削液会给环境和操作员健康带来风险。本文试图开发和表征一种用于加工应用的新型可持续和环保的切削液。麻风树油基Al ₂ O ₃和 ZrO 纳米颗粒分散了不同浓度的纳米流体，并对其流变学、热学和润湿性进行了表征。粘度研究在 303 K 至 393 K 的温度范围内进行，而热性能则在室温下进行研究。通过测量流体液滴与碳化钨 (WC) 基材界面之间的接触角来进行润湿性研究。实验结果表明，纳米流体的热物理性能（即粘度、润湿性和热性能）优于基础油。粘度研究表明使用 Al ₂ O _{3 的}结果最好（1% 重量）分散的纳米流体，而热性能表明 ZrO（0.5% 重量）分散的纳米流体是最有效的。润湿性研究显示混合纳米流体（0.5% 重量）的最佳结果。LCA 研究表明，与传统切削液相比，基于麻风树的纳米流体对环境的不利影响较小。