【摘要】 在表面相Gibbs-Duhem方程的基础上,结合两个简单的表面模型,建立了一个能由体相性质及纯物质的表面张力推算二元混合物表面张力的新方程。经过216个系统的广泛检验,结果令人满意。在没有二元数据及可调参数的条件下,有一半以上系统的表面张力计算值与实验值的均方差小于0.5×10^-3N·m^-1,约四分之三的系统小于1.0×10^-3N·m^-1。但对水溶液及某些有强烈缔合作用的二元系的推算的误差较大。新方程为建立更全面的预测混合物表面张力的模型提供了良好的基础。更多还原

【Abstract】 An equation for predicting the surface tensions of binary liquid mixtures from the properties of the bulk liquids and surface tensions of the pure substance has been established on the basis of Gibbs-Duhem’s equati0n along with the contribution of two simple surface models.It gave satisfactory results for running 216 binary mixtures. For more than a half of these systems, the standard deviations of the predicted surface tensions are less than 0.0005N/m and about three-quarters are less than 0.001 N/m without using any binary informations and any adjustable parameters. However, for the surface tensions of aqueous systems and some strongly associated binary mixtures a little higher deviations between the experimental values and the predicted ones have been found. This equation appears to provide a sound basis for establishing a more reliable model for predicting the surface tensions of the multicomponent mixtures too.更多还原