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 language | English (US) |
|---|---|
| Pages (from-to) | 292-299 |
| Number of pages | 8 |
| Journal | Industrial Crops and Products |
| Volume | 24 |
| Issue number | 3 |
| DOIs | |
| State | Published - Nov 2006 |
| Externally published | Yes |
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