2nd International Brazilian Conference on Tribology — Vol. 2, Num. 2 (2014)
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Resumo
The future lubricants must be more environmentally adapted, with a higher level of performance lower total life cycle, cost than currently used lubricants. Environmental friendly, the biodegradable alternatives are available for a large variety of mineral oil based lubricants. Vegetable oils are the major source of these base fluids, although they have lower thermal and oxidation stability and even worse low-temperature behavior than mineral oil. These physical and chemical properties can be improved by chemical modification. The aim of this study was to evaluate physicochemical properties and film formation from modified vegetable oils. The vegetable oil was chemically modified by epoxidation reaction with acetic and formic acid using sunflower oils. Viscosity, iodine value, density, acidity value and thermal stability were determined for epoxidized oils. The film formation was analyzed using a HFRR tribometer. The results showed that epoxidized vegetable oils had excellent properties to be used as lubricant, and their tribological performance is higher than mineral oil.
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Palavras-chave
Epoxidation reaction; Biolubricant; Tribological performance
Como citar
Salete Martins Alves; Erinéia da Silva Santos; Marinalva Ferreira Trajano.
HIGH PERFORMANCE LUBRICANT FROM MODIFIED VEGETABLE OIL,
p. 3739-3747.
In: 2nd International Brazilian Conference on Tribology,
Foz do Iguaçu - Brasil,
2014.
, DOI 10.5151/1472-5836-25372
