Thermal Transport and Physical Characteristics of Silver-Reinforced Biodegradable Nanolubricant

Jose Jaime Taha-Tijerina (), Karla Aviña, Nicolás Antonio Ulloa-Castillo and Dulce Viridiana Melo-Maximo
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Jose Jaime Taha-Tijerina: Department of Informatics and Engineering Systems, The University of Texas Rio Grande Valley, Brownsville, TX 78520, USA
Karla Aviña: Departamento de Ingeniería, Universidad de Monterrey, Av. Ignacio Morones Prieto 4500 Pte., San Pedro Garza García 66238, Mexico
Nicolás Antonio Ulloa-Castillo: Center for Innovation in Digital Technologies, Department of Mechanical Engineering and Advanced Materials, School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada Sur 2501, Monterrey 64849, Mexico
Dulce Viridiana Melo-Maximo: Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Mexico City 52926, Mexico

Sustainability, 2023, vol. 15, issue 11, 1-12

Abstract: In this investigation, the thermal transport behavior of biodegradable lubricant reinforced with silver nanostructures (AgNs) at various filler fractions of 0.01, 0.05, 0.10, and 0.20 weight percent was evaluated over a temperature scan analysis, ranging from room temperature up to 60 °C. The experimental results revealed significant gradual enhancements in thermal conductivity as AgNs concentration and evaluating temperatures were increased. These improvements showed the important role of nanostructures’ interaction within the biodegradable lubricant. The thermal conductivity performance improved for nanolubricants ranging from 6.5% at 30 °C and 0.20 wt.% AgNs content up to a maximum 32.2%, which was obtained at 60 °C with 0.20 wt.% AgNs concentration. On the other hand, the thermal stability of reinforced lubricants was assessed through thermogravimetric kinetics analyses. The predictive curves resulting from the analyses indicated that there is an enhancement in both the onset temperature for decomposition and the percentage conversion under isothermal conditions for lubricants reinforced with AgNs. Specifically, the results show that the required temperature to achieve a 5% conversion is 100 °C higher than that calculated for bare lubricant. Moreover, the predictive analyses indicate that there is a delay in the decomposition time at isothermal conditions.

Keywords: biodegradable; nanolubricant; thermal transport; thermogravimetric; silver (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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