Experimental assessment of thermal and rheological properties of coconut oil-silica as green additives in drilling performance based on minimum quantity of cutting fluids

Conventional metal working fluids are prepared from petroleum based mineral oils with toxic, carcinogenic, non-biodegradable and unsustainable additives, which can cause serious environmental contamination health risks to operators. Formulations non-toxic emulsifiers natural additives such as vegetable currently being considered for further development use of tribological products. This study is concerned the thermal flow properties a cutting fluid (taladrine, T) mixed phase change material (PCM) coconut oil (CO) in proportion 1:9 (CO-0.1T) hydrophilic silica 0.01, 0.03 0.05 vol fractions. The were evaluated by differential scanning calorimetry (DSC) conductivity measurements while assessed viscosity temperature curves. addition solid particles has demonstrated an enhancement conductivities small differences latent heat. microstructure suspensions was established DSC cooling dynamic thermogram rheological measurements. These results confirmed images optical polarized microscopy plate-like needles observed. suspension CO-0.1T adequate gel strength produced reduction 11 °C drilling performance. A Minimum Quantity Cutting Fluid (MQCF) 2 g alternative dry machining flood cooling. It also prevented evaporative loss removed chips, high complex fluid. In this work materials filled way sustainable eco-friendly toxic waste removal justified.