Oxidation and low temperature stability of vegetable oil-based lubricants

Sevim Z. Erhan, Brajendra Kumar Sharma, Joseph M. Perez

Research output: Contribution to journalArticle

Abstract

Vegetable oils are promising candidates as base fluid for eco-friendly lubricants because of their excellent lubricity, biodegradability, viscosity-temperature characteristics and low volatility. Their use, however, is restricted due to low thermo-oxidative stability and poor cold flow behavior. This paper presents a systematic approach to improve the oxidation behavior and low temperature fluidity of vegetable oil derivatives. Among the various possible avenues available, the combination of chemical additives, diluent (polyalphaolefin), and high-oleic vegetable oils offer the best option for achieving the ultimate goal. Vegetable oil-based lubricants formulated using the above approach exhibit superior oxidative stability, and improved low temperature properties such as pour points compared to commercially available industrial oils such as bio-based hydraulic fluids. The above vegetable oil-based formulations compare at par with petroleum-based lubricants for use in high-temperature applications and often outperform the competition in some of its properties.

Original languageEnglish (US)
Pages (from-to)292-299
Number of pages8
JournalIndustrial Crops and Products
Volume24
Issue number3
DOIs
StatePublished - Nov 1 2006
Externally publishedYes

Keywords

  • Bio-based lubricants
  • Low temperature stability
  • Oxidative stability
  • Pressurized differential scanning calorimetry
  • Rotary bomb oxidation test
  • Vegetable oils

ASJC Scopus subject areas

  • Agronomy and Crop Science

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