关键词:

密度, 碳酸二乙酯, 振动弦, 黏度

Abstract:

Measurements of the viscosity and density of diethyl carbonate are reported at temperatures from 263 K to 363 K and at pressures up to 20 MPa.The measurements were performed simultaneously by using a vibrating-wire instrument operating in the forced mode of oscillation.The overall uncertainties of these results were ±2.0% in viscosity and ±0.2% in density.The measurements were correlated with the Tait-type equation for density and the Hard-sphere scheme for viscosity.The average absolute deviation and the maximum absolute deviation of the viscosity measurements from the correlation for diethyl carbonate were 0.54% and 1.98%, respectively.With regard to density, the average absolute deviation and the maximum absolute deviation of the present results from the correlation were 0.042% and 0.12%, respectively.Comparisons of the experimental data and measurements from literatures with the values calculated by the correlations at different temperatures and pressures were presented.

Key words:

密度, 碳酸二乙酯, 振动弦, 黏度