Nanolubricants: chracterization of lubricant oil modified with nanographite


The lubrication through lubricant oils consists in the formation of a oil film on the metal surface, which prevents direct contact between two metal, reducing friction and wear of moving parts of a engine. Graphite crystallizes in a hexagonal system with regular rhombic symmetry and tubular crystals and has a good property of lubrication due to lamellar structure linked by weak Van der Waals interactions. The graphite may be used as an additive in lubricant oil to increase the thermotolerance of the product, preventing the lubricant drain of metal surface. When added to the crankcase of an engine, the graphite acts as a friction reducer and effectively penetrates in areas where conventional lubricant oil cannot reaches, improve engine performance and aid in fuel economy. This work presents a study of characterization of nanolubricant modified with graphite nanoparticles. In this work were used graphite nanoparticles of PlasmaChem, with average radius of 400-450 nm. The incorporation of nanoparticles in base oil was performed using high energy method (ultraturrax). Nanolubricants samples were characterized related to color, moisture, corrosion, density, sulfur content, kinematic viscosity at 40 and 100 °C and index viscosity.

GARCIA, Adriana; AKEMI, C.M.E.; HIRAYAMA, Danilo Eiji; ANTONOFF, Heloisa Burkhardt; MENDONÇA, Marcelo Aparecido;OLIVEIRA, Adriano Marim de; GOMES, S.S.; GUIMARÃES, Kleber Lanigra; GARCIA, A.C. Nanolubricants: characterization of lubricant oil modified with nanographite. In: NANOTECH CONFERENCE AND EXPO 18., 2015, Washington. Proceedings… 5 p.

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