RT Journal Article
T1 Experimental assessment of thermal and rheological properties of coconut oil-silica as green additives in drilling performance based on minimum quantity of cutting fluids
A1 Gómez-Merino, Ana Isabel
A1 Jiménez-Galea, Jesús Javier
A1 Rubio-Hernández, Francisco José
A1 Santos-Ráez, Isidro María
AB 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 and healthrisks to operators. Formulations with non-toxic emulsifiers and natural additives such as vegetable oils arecurrently being considered for further development and use of non-toxic tribological products. This study isconcerned with the thermal and flow properties of a cutting fluid (taladrine, T) mixed with a phase changematerial (PCM) coconut oil (CO) in a proportion of 1:9 (CO-0.1T) and hydrophilic silica in 0.01, 0.03 and 0.05vol fractions. The thermal properties were evaluated by differential scanning calorimetry (DSC) and thermalconductivity measurements while the flow properties were assessed by viscosity temperature curves. Theaddition of solid particles has demonstrated an enhancement of the thermal conductivities with small differencesin the latent heat. The microstructure of the suspensions was established from the DSC cooling dynamic ther-mogram and the rheological measurements. These results were confirmed by the images of optical polarizedmicroscopy in which plate-like needles were observed. The suspension of 0.03 silica in CO-0.1T demonstrated anadequate gel strength and produced a reduction of 11 ◦C in drilling performance. A Minimum Quantity of CuttingFluid (MQCF) of 2 g as an alternative for dry machining and flood cooling. It also prevented evaporative loss andremoved metal chips, as a high viscosity complex fluid. In this work the use of phase change materials filled withsolid particles as a way of sustainable eco-friendly toxic waste removal in drilling was justified.
PB Elsevier
YR 2022
FD 2022-09-25
LK https://hdl.handle.net/10630/24895
UL https://hdl.handle.net/10630/24895
LA eng
NO A.I. Gómez-Merino, J.J. Jiménez-Galea, F.J. Rubio-Hernández, I.M. Santos-Ráez, Experimental assessment of thermal and rheological properties of coconut oil-silica as green additives in drilling performance based on minimum quantity of cutting fluids, Journal of Cleaner Production, Volume 368, 2022, 133104, ISSN 0959-6526, https://doi.org/10.1016/j.jclepro.2022.133104
NO Funding for open access charge: Universidad de Málaga
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026