新型制冷润滑油的开发是制冷行业发展的迫切需求，离子液体具有优良的物理化学性质，是一种非常有潜力的环保型润滑油。但是，目前国际上对氢氟烃和烷烯烃制冷剂在离子液体中溶解度的研究较少，而对它们混合物在离子液体中溶解度的研究还处于空白状态。本项目拟针对氢氟烃和烷烯烃纯质及其混合物在离子液体中的溶解度开展系统的实验和理论研究：研制一套适用于氢氟烃和烷烯烃纯质及其混合物在离子液体中溶解度的实验测量系统，获取一批高精度的溶解度实验数据；分析不同状态下氢氟烃和烷烯烃纯质及其混合物在离子液体中溶解度的变化规律，深入探讨离子液体和制冷剂以及制冷剂各组分之间的微观作用机理，进而基于基团贡献理论和统计缔合流体理论建立能够精确预测氢氟烃和烷烯烃纯质及其混合物在离子液体中溶解度的理论模型。本项目的研究旨在为离子液体润滑油的设计与应用提供科学依据。

The development of new lubricant is the urgent need of refrigeration industry. Ionic liquids are promising environment friendly lubricants due to their excellent physical and chemical characteristics. However, there are a little research on the solubilities of hydrofluorocarbon refrigerants and hydrocarbon refrigerants in ionic liquids, and there are no solubility data for their mixtures in ionic liquids. Systemic experimental investigation and theoretic analysis on the solubilities of hydrofluorocarbons, hydrocarbons and their mixtures in ionic liquids will be conducted in this project. An experimental system for the solubilities of hydrofluorocarbons, hydrocarbons and their mixtures in ionic liquids will be built. Then large amounts of solubility data will be obtained. The trend of the solubilities of hydrofluorocarbons, hydrocarbons and their mixtures in ionic liquids, the interaction between ionic liquids and refrigerants and the interaction between different refrigerants will be analyzed. A prediction model based on the group contribution theory and the statistic associating fluid theory will be established for the solubilities of hydrofluorocarbons, hydrocarbons and their mixtures in ionic liquids. The goal of this project is to provide scientific basis for the design and application of ionic liquid lubricants.