An Application of a Free Volume Model to Lubricant Rheology 2—Variation in Viscosity of Binary Blended Lubricants
An Application of a Free Volume Model to Lubricant Rheology 2—Variation in Viscosity of Binary Blended Lubricants
复制标题
自由体积模型在润滑油流变学中的应用 2——二元混合润滑油粘度的变化
DOI：
10.1115/1.3260911
复制
发表时间：
1984
影响因子：
2.5
通讯作者：
W. 0. Winer
中科院分区：
文献类型：
--
作者：
S. Yasutomi;S. Bair;W. 0. Winer
第 1 部分中开发的修改后的 WLF 方程适用于两个系列的二元混合润滑剂的粘度 μ(T,P) 变化，这些润滑剂含有聚苯醚 (5P4E) 和环烷矿物油 (N1) 中的常见合成二酯（癸二酸二（2-乙基己基）酯）。膨胀观测和粘度分析表明，可以从各个组分的关系式中获得预测二元混合物的修正 WLF 方程中的压力函数所需的关系式。这些关系使我们能够估计二元混合润滑剂的 μ(T,P)，而无需测量混合物的高压粘度。对于实际应用，修改后的 WLF 方程也可用于预测混合润滑油产品的 μ(T,P)。
The modified WLF equation developed in Part 1 was applied to the variation in viscosity, μ(T,P), for two series of binary blended lubricants containing a common synthetic diester (di(2ethylhexyl)sebacate) in a polyphenyl ether (5P4E) and in a naphthenic mineral oil (N1). Dilatometric observations and the viscosity analysis indicate that the relations needed to predict the pressure functions in the modified WLF equation for the binary mixture can be obtained from those of respective components. These relations allow us to estimate μ(T,P) of a binary blended lubricant without measurements of the high pressure viscosity of the blend. For practical applications, the modified WLF equation may also be useful for predicting μ(T,P) of blended lubricant products.