From: Synthesis, reactivity and application studies for different biolubricants
No. | Class | Type | Operating temperature °C | Applications | Advantages vs. mineral oil | Limiting properties |
---|---|---|---|---|---|---|
1. | Synthesized fluids hydrocarbons (SFHs) | Polyalphaolefins, alkylated aromatics, polybutenes, cycloaliphatic | 155 to -45 | Machine tool spindles, Freezer plants-motors, conveyors, bearings | High temperature stability, long life, low temperature fluidity, high viscosity index, improved wear protection, low volatility, oil economy | Solvency/detergency, seal compatibility |
2. | Organic esters | Dibasic acid ester, polyol ester | 204 to -35 | Commercial manual transmission | No wax, high temperature stability, long life, low temperature fluidity, solvency/detergency | Seal compatibility, mineral oil compatibility, antiwear and extreme pressure, hydrolytic stability, paint compatibility |
3. | Phosphate esters (phosphoric acid esters) | Triaryl phosphate ester, trialkyl phosphate ester, mixed alkylaryl phosphate esters | 180 to -18 | Hydraulic Systems | Fiber resistance, lubricating ability | Seal compatibility, low viscosity index, paint compatibility, metal corrosion, hydrolytic stability |
4. | Polyglycols | Polyalkylene, polyoxyalklylene, polyethers, glycols | 245 to -20 | Gas turbines | Water versatility, high viscosity index, low temperature fluidity, antirust, no wax | Mineral oil compatibility, paint compatibility, oxidation stability |