High-pressure viscosity measurements of polyalphaorefins at elevated temperature

被引：1
|
作者：
Nakamura Y. [1 ,2 ]
Hiraiwa S. [2 ]
Suzuki F. [2 ]
Matsui M. [1 ,2 ]
机构：
[1] Division of Physics Engineering, Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu-shi, Mie
[2] Graduate School of Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu-shi, Mie
来源：
Tribology Online | 2016年 / 11卷 / 02期
关键词：
EHL; High-pressure; Lubricating oils; Polyalphaorefin; Pressure-viscosity coefficient; Viscosity;
D O I：
10.2474/trol.11.444
中图分类号：
学科分类号：
摘要：
In order to provide detail data on polyalphaorefin(PAO)'s viscosity for the tribological analysis under EHL lubrication conditions, viscosity-pressure-temperature correlation relation of wide range viscosity grade PAOs (from PAO2 to PAO100) was investigated employing a special compact pressure-generating apparatus called diamond-anvil cell. Pressure-viscosity coefficients were resulted to gradually decrease with increasing pressure and temperature up to 1 GPa at up to 150°C, and the values at 150°C were about a half of those at 40°C for all PAOs. The two representative temperature-pressure-viscosity correlation formulations were well regressed with the high-pressure viscosity data. By substituting the regression formulations for Blok's pressure-viscosity coefficient, gradually increasing coefficient with viscosity grade were found out, and that of high viscosity PAO100 was about 1.5 times larger than that of low viscosity PAO2. Copyright © 2016 Japanese Society of Tribologists.
引用
收藏
页码：444 / 449
页数：5
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