Abstract
Ionic Liquids are organic salts that remain liquid at room tempreature. They virtually have no vapor pressure; therfore, they may make ideal base oils for rolling aluminum due to a reduction in air emissions. The forces that hold ionic liquids together are strong coulombic forces rather than weak von der Waals forces. Hence, ionic liquids may have properties other than vapor pressure that are different from normal hydrocarbon base oils. To determine what these differences and similaritiys might be, a series of tests and measurments were done to determine the following properties: density, thermal stability, blend viscosity, viscosity index, pressure-viscosity coefficient, limiting shear stress (tecation curves), EP performance and additive solubility. The two ionic liquids studied were EMIMIM and BMIMPF6. Two blended polyalphaolefines (PAO) were used as controls.
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