Molecular interaction originating from polar functional group in lubricants and its relationship with their traction property under elastohydrodynamic lubrication
Molecular interaction originating from polar functional group in lubricants and its relationship with their traction property under elastohydrodynamic lubrication
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润滑剂中极性官能团的分子相互作用及其与弹流润滑牵引性能的关系
DOI：
10.1002/ls.1278
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发表时间：
2015
影响因子：
1.9
通讯作者：
S. Mori
中科院分区：
文献类型：
--
作者：
Koji Takiwatari;H. Nanao;Yasushi Hoshi;S. Mori
使用牵引测试仪和用显微傅里叶变换红外光谱仪原位观察弹流润滑膜来研究分子相互作用与牵引性能之间的相关性。使用的样品油为端基为醇或醚的聚丙二醇（PPG）和合成烃油聚α-烯烃。从牵引试验中发现，PPG的牵引系数对末端基团敏感。以酒精作为终末组的PPG显示出比乙醚组更高的牵引系数。为了研究润滑油的分子相互作用，进行了具有显微傅里叶变换红外的原位观察。结果表明，在赫兹接触区，高压使PPG中羟基的氢键得到加强。这些结果表明，在弹流润滑接触区的流变性能的影响，加强氢键。版权所有© 2014约翰威利父子有限公司.
The correlation between molecular interaction and traction properties was investigated using a traction tester and in situ observation of elastohydrodynamic lubrication film with a micro‐Fourier transform infrared spectrometer. The sample oils used were polypropylene glycols (PPGs) with the end‐group of alcohol or ether and a synthetic hydrocarbon oil, poly‐α‐olefin. From the traction tests, it was found that the traction coefficient of PPG was sensitive to the end‐group. PPG with alcohol as the end‐group showed a higher traction coefficient than that with the ether group. In situ observation with a micro‐Fourier transform infrared was performed in order to investigate the molecular interaction of the lubricant oil. It was found that the hydrogen bonding of hydroxyl groups in PPG was strengthened by high pressure in the Hertzian contact region. These results suggest that the rheological properties in the elastohydrodynamic lubrication contact region were affected by the strengthened hydrogen bonding. Copyright © 2014 John Wiley & Sons, Ltd.