The relative viscosity if the ration of the viscosity of a solution ( η) to the viscosity of the solvent ( η s) in that solution. for 45 enter 45 Click on the 'Calculate' button To reset the calculation, click on the 'New values' button. Inherent Viscosity can be measured by comparing the flow time of a polymer solution flowing through a narrow capillary to the flow time of a pure solvent through the same capillary. (KV 100) of appropriate base oils used to prepare a lubricant composition in accordance with the present invention is preferably in the range of 1 mm 2 /s to 10 mm 2 /s, more preferably in the range of 1 mm 2 /s to 8 mm 2 /s, even more preferably of 1 mm 2 /s to 5 mm 2 /s, according to ASTM D445. Enter the viscosity in mm/s at this temperature for the 1st base oil Enter the viscosity in mm/s at this temperature for the 2nd base oil Enter the ratio by weight of 1st base oil. Inherent Viscosity is a viscometric method for measuring molecular size. Viscoplex PPDs and VII offerings from Evonik Oil Additives. Evoniks VISCOPLEX® high-performance additives contribute to fuel economy, engine cleanliness and reduced wear.
The Inherent Viscosity equation is the ratio of the natural logarithm of the relative viscosity to mass concentration. Fuel economy expectations, as well as extended drain intervals and low temperature, used oil viscosity, require robust and long-life lubricants.
η R is the relative viscosity (unit-less ratio).This is because a force is required to overcome the friction. For a tube with a constant rate of flow, the strength of the compensating force is proportional to the fluids viscosity. The formula for the Inherent Viscosity is: In general, viscosity depends on a fluids state, such as its temperature, pressure, and rate of deformation. Inherent Viscosity (η inh): The calculator returns the inherent viscosity. The Inherent Viscosity calculator computes the inherent viscosity based on the relative viscosity and the mass concentration.
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