TRIBOLOGICAL EVALUATION OF THE PERFORMANCE OF TRIMETHYLOLPROPANE ESTER BIOLUBRICANTS BASED ON FATTY ACIDS FROM SUNFLOWER OIL

Petrică TURTOI, Julien DELCUZE, Ionuț-Răzvan NECHITA, Alice MARINESCU

Abstract


The efforts for finding a solution for environmental sustainability issues have prompted researchers to look for alternative resources for lubricant oils. Bio-based lubricants were proven to have certain advantages, such as being less expensive, showing good lubricating properties, and most importantly, being highly bio-degradable. Trimethylolpropane esters (TMPEs) are someof the most commonly used polyols in the production of bio-based lubricants, due to their thermal stability. Therefore, the current study follows the tribological evaluation of the performance of a single non-additivated TMPE produced from sunflower oil fatty acids. Tribological tests were carried out in different loading conditions, using a four-ball tribo-tester. The coefficient of friction, the variation of wear with the applied load, as well as the seizure load, were determined. The results showed relatively good anti-wear properties for the tested TMPE. A comparison of the results with similar ones found in the literature was made

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