Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Experimental Dynamic Viscosities of Dipentaerythritol Ester Lubricants at High Pressure

Paredes, X.[Xavier], Pensado, A. S.[Alfonso S.], Comunas, M. J. P.[Maria J.P.], Fernandez, J.[Josefa]
J. Chem. Eng. Data 2010, 55, 9, 3216-3223
ABSTRACT
In the present work viscosity data for two dipentaerythritol esters (DiPEs) from (303.15 to 373.15) K up to 60 MPa are reported. The experimental measurements were performed with a rotational automated viscometer Anton Paar Stabinger SVM3000 at 0.1 MPa and a rolling-ball viscometer Ruska 1602-830 for high pressures. Modified Vogel-Fulcher-Tammann (VFT) equations are used to represent the temperature and pressure dependence of the viscosity. The viscosity data have been superpositioned as function of the product of the temperature, T, and the volume, V, raised to an exponent ?, namely, the scaling parameter, TV?. A comparison between the values of this characteristic scaling parameter for the DiPEs with those of other complex esters has been performed.
Compounds
# Formula Name
1 C40H70O13 pentanoic acid, 1,1'-[oxybis[2,2-bis[[(1-oxopentyl)oxy]methyl]-1,3-propanediyl]] ester
2 C52H94O13 dipentaerythritol hexaheptanoate
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Falling or rolling sphere viscometry
  • 38
  • POMD
  • 1
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Falling or rolling sphere viscometry
  • 45
  • POMD
  • 2
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Falling or rolling sphere viscometry
  • 38
  • POMD
  • 2
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Falling or rolling sphere viscometry
  • 45