Effect of Functional Groups of Polyglycol Oils on Their Lubrication Properties
The effect of molecular structure on the traction properties of polyglycol oils was investigated using a traction tester, and in-situ observation of the oil film was performed with a micro-Fourier transform infrared spectrometer under elastohydrodynamic lubrication conditions. The sample oils used w...
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Japanese Society of Tribologists
2021
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oai:doaj.org-article:e3f1372bf5054fc39f6a224327b0c10d2021-11-05T09:30:56ZEffect of Functional Groups of Polyglycol Oils on Their Lubrication Properties1881-219810.2474/trol.16.24https://doaj.org/article/e3f1372bf5054fc39f6a224327b0c10d2021-02-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/16/1/16_24/_pdf/-char/enhttps://doaj.org/toc/1881-2198The effect of molecular structure on the traction properties of polyglycol oils was investigated using a traction tester, and in-situ observation of the oil film was performed with a micro-Fourier transform infrared spectrometer under elastohydrodynamic lubrication conditions. The sample oils used were polypropylene glycol (PPG) diol, PPG triol, PPG dimethyl ether, PPG diester, PPG diamine, PPG triamine, and poly-α-olefin. The traction coefficient and oil film thickness of the sample oils were sensitive to the functional group at the terminal of the molecule. The sample oil containing polar functional group is larger in oil film thickness and traction coefficient than non-polar hydrocarbon oil, poly-α-olefin. These results suggest that the hydrogen bonding of functional groups was strengthened by high pressure in the Hertzian contact region. Moreover, the effect of water in the sample oils on the traction behavior was discussed. Water was dissolved into the sample oils from the atmosphere during the lubrication test, and it is implied that water in PPG diamine affect the traction coefficient.Koji TakiwatariShinya SatoYasushi HoshiHidetaka NanaoShigeyuki MoriJapanese Society of Tribologistsarticleelastohydrodynamic lubricationpolyglycoltraction propertyin-situ observationftirhydrogen bondingpolar functional groupdissolved waterPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 16, Iss 1, Pp 24-30 (2021) |
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DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
elastohydrodynamic lubrication polyglycol traction property in-situ observation ftir hydrogen bonding polar functional group dissolved water Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 |
| spellingShingle |
elastohydrodynamic lubrication polyglycol traction property in-situ observation ftir hydrogen bonding polar functional group dissolved water Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Koji Takiwatari Shinya Sato Yasushi Hoshi Hidetaka Nanao Shigeyuki Mori Effect of Functional Groups of Polyglycol Oils on Their Lubrication Properties |
| description |
The effect of molecular structure on the traction properties of polyglycol oils was investigated using a traction tester, and in-situ observation of the oil film was performed with a micro-Fourier transform infrared spectrometer under elastohydrodynamic lubrication conditions. The sample oils used were polypropylene glycol (PPG) diol, PPG triol, PPG dimethyl ether, PPG diester, PPG diamine, PPG triamine, and poly-α-olefin. The traction coefficient and oil film thickness of the sample oils were sensitive to the functional group at the terminal of the molecule. The sample oil containing polar functional group is larger in oil film thickness and traction coefficient than non-polar hydrocarbon oil, poly-α-olefin. These results suggest that the hydrogen bonding of functional groups was strengthened by high pressure in the Hertzian contact region. Moreover, the effect of water in the sample oils on the traction behavior was discussed. Water was dissolved into the sample oils from the atmosphere during the lubrication test, and it is implied that water in PPG diamine affect the traction coefficient. |
| format |
article |
| author |
Koji Takiwatari Shinya Sato Yasushi Hoshi Hidetaka Nanao Shigeyuki Mori |
| author_facet |
Koji Takiwatari Shinya Sato Yasushi Hoshi Hidetaka Nanao Shigeyuki Mori |
| author_sort |
Koji Takiwatari |
| title |
Effect of Functional Groups of Polyglycol Oils on Their Lubrication Properties |
| title_short |
Effect of Functional Groups of Polyglycol Oils on Their Lubrication Properties |
| title_full |
Effect of Functional Groups of Polyglycol Oils on Their Lubrication Properties |
| title_fullStr |
Effect of Functional Groups of Polyglycol Oils on Their Lubrication Properties |
| title_full_unstemmed |
Effect of Functional Groups of Polyglycol Oils on Their Lubrication Properties |
| title_sort |
effect of functional groups of polyglycol oils on their lubrication properties |
| publisher |
Japanese Society of Tribologists |
| publishDate |
2021 |
| url |
https://doaj.org/article/e3f1372bf5054fc39f6a224327b0c10d |
| work_keys_str_mv |
AT kojitakiwatari effectoffunctionalgroupsofpolyglycoloilsontheirlubricationproperties AT shinyasato effectoffunctionalgroupsofpolyglycoloilsontheirlubricationproperties AT yasushihoshi effectoffunctionalgroupsofpolyglycoloilsontheirlubricationproperties AT hidetakananao effectoffunctionalgroupsofpolyglycoloilsontheirlubricationproperties AT shigeyukimori effectoffunctionalgroupsofpolyglycoloilsontheirlubricationproperties |
| _version_ |
1718444321059897344 |