Effect of the Temperature on the Viscosities of Three Polyalkylene Glycol Ether Lubricants

Temperature dependence of dynamic viscosity of the lubricants is essential for most industrial applications.In the present work,experimental viscosities of three polyalkylene glycol ether lubricants including PAG1 (23 ethyleneoxide units), PAG2 (29 ethylene oxide units) and PAG3 (21 ethylene oxide units) were correlated using a linear relationwith the high accuracy. In addition, we have analysed the temperature–viscosity coefficient ( ) for these fluids. Thisproperty decreases when the temperature increases and increases with the pressure from 0.1 to 60 MPafor threelubricants.The following sequence have been found for this coefficient PAG3 > PAG2 > PAG1.

کلیدواژه ها:

Correlation ، Viscosity ، Lubricants ، Temperature dependence