EMG Lubricants Godo Kaisha
EMG Lubricants Godo Kaisha
EMG Lubricants Godo Kaisha
Iwate University
Iwate University
Iwate University
登録日
2022-01-18
雑誌名
Tribology Online
巻
15
号
3
ページ
136 - 141
発行年
2020-06-15
ISSN
18812198
1881218X
抄録
Research interests recently increased in studying polymer-type friction modifiers (polymer FM) consisting of a polymer backbone and a functional group because of their good friction reduction capability. However, there is no clear verification of their working mechanisms. Therefore, the polymer FM behavior at the contact region must be understood to provide mechanistic information and design further-improved polymer FMs. For this purpose, in situ observation techniques have been applied to the chemical analysis of the oil film formed from a polymer FM using a micro-Fourier transform infrared spectrometer. The experimental results indicate that the polymer concentrations at the Hertzian contact drastically increased, exceeding the bulk concentration of oil. The following new friction reduction mechanism is proposed based on the clarified polymer FM concentration: the concentrated adsorption layer of the polymer FM prevents direct contact of the surface asperities.
In Situ FTIR Observation of the Polymer FM Enrichment at the EHL Contact
trio-v15n3p136-141
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