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Determination and correlation of densities and viscosities for binary mixture of ethylene carbonate and ethylene glycol at different temperatures
Pages: 46-50
Year: Issue:  6
Journal: Journal of Nanjing University of Technology(Natural Science Edition)

Keyword:  碳酸乙烯酯乙二醇黏度密度超额摩尔体积混合黏度;
Abstract: 在常压下采用DAM4500型密度计测定了碳酸乙烯酯乙二醇的混合溶液在313.2~353.2 K下的密度,用NDJ1旋转黏度计测定了该二元体系在相同温度下的黏度.结果表明:碳酸乙烯酯乙二醇二元体系的密度和黏度均随温度升高而降低,密度呈线性衰减,黏度呈指数衰减.由密度数据计算出超额摩尔体积VE、由黏度数据计算出混合黏度的变化Δη,VE呈正值,Δη基本聚集在0附近;同时对不同温度下的超额摩尔体积、混合黏度的变化与组成的关系按RedlichKister方程进行了关联,最大标准偏差低于5%,说明此方程适合该体系的回归.
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