Measurement of Solubility, Viscosity and Density of Synthetic Lubricants/HFC-134a Mixtures
合成润滑剂/HFC-134a混合物的溶解度、粘度和密度测量
R-134a在合成聚烯烃和聚亚烷基乙二醇润滑剂中的平衡气体溶解度、粘度和密度已通过振荡体粘度计测量,该粘度计允许在等温和压力条件下直接测量密度和气体浓度。具体而言,在-25°C至125°C的规定温度范围内,以及在500 psia的最高压力范围内,溶解气体的浓度范围为2%至65%以上(按重量计)。本研究选择的聚烯烃为32 ISO VG和100 ISO VG支链聚烯烃。
选择的聚亚烷基二醇为32 ISO VG单丁醚和80 cSt聚氧丙烯二醇。每种润滑剂的压力-粘度-温度试验曲线以其各自的等温测量温度表示,其中详细说明了平衡气体溶解度的组成、蒸汽压、浓度(以重量百分比表示)以及粘度(以厘泊和厘斯托克为单位)。原始数据以图形和表格的形式呈现。
The equilibrium gas solubility, viscosity, and density of R- 134a in synthetic polyolester and polyalkylene glycol lubricants have been measured by an oscillating body viscometer which allows direct measurement of density and gas concentration at isothermal and pressure conditions. Specifically, the concentration of dissolved gas ranges from 2% to over 65% by weight in the specified temperature range of -25°C to 125°C, and within the highest pressure of 500 psia. The polyolesters chosen for this study were 32 ISO VG and 100 ISO VG branched chain polyolesters. The polyalkylene glycols chosen were a 32 ISO VG mono butyl ether and a 80 cSt polyoxypropylene diol.The pressure-viscosity-temperature test plots of each lubricant are presented as its individual isothermal measurement temperatures, which detail the composition of the equilibrium gas solubility, vapor pressure, concentration as percent by weight, and viscosity in centipoise and centistokes. The raw data are presented in graphical and tabular form.