【摘要】 在常压下分别测定了环己酮与环己烷的混合液在293.15~343.15 K下的密度和粘度,并由密度数据计算出超额体积VE、由粘度数据计算出了不同温度和组成下的超额粘度Δη,VE为正值,Δη为负值;同时对不同温度下的超额体积、超额粘度与组成的关系分别用Redlich-Kister方程进行了关联,最大标准偏差小于3%,说明此体系适合采用Redlich-Kister方程回归。混合溶液的粘度随温度的关系用Andrade公式进行了关联,各组成关联的相关系数接近于1。更多还原

【Abstract】 Densities and viscosities of the binary mixtures of cyclohexanone with cyclohexane were determined between 293.15 and 343.15K under atmospheric pressure using a vibrating U-shaped sample tube densimeter and Ubbelohde suspended-level viscometer.Densities and viscosities of solutions were used to calculate excess molar volumes and excess viscosities respectively.The excess molar volumes are positive and the excess viscosities are negative.Excess volumes and excess viscosities were correlated by the Redlich-Kister equation respectively.The maximum standard deviations were lower than 3%.The results show this system can be regressed by using Redlich-Kister equation.Viscosities of cyclohexanone and cyclohexane mixtures were correlated with temperatures by the Andrade equation.The correlation coefficients approximate to 1.更多还原