2011 Fiscal Year Final Research Report
Evaluation of the dynamics of lubricating greases by dielecteric
| Project/Area Number |
21560144
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
SUZUKI Akihito 東京工業大学, 大学院・理工学研究科, 助教 (30235931)
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| Project Period (FY) |
2009 – 2011
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| Keywords | トライボロジー / 潤滑グリース / 誘電緩和 / 増ちょう剤 / 基油 / レオロジー |
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| Research Abstract |
Molecular dynamics of base oil and thickeners in the lubricating greases had been investigated with dielectric spectroscopy. Dielectric relaxations of base oil and thickener were observed independently. From the comparison of dielectric relaxation behavior and rheological properties of lubricating greases, it was found that temperature dependence of dielectric relaxation time of the base oil in lubricating grease is very similar with that of dynamic viscoelasticity and creep characteristics of lubricating grease. No clear correlation was found between dielectric relaxation of thickener and rheological properties of lubricating greases.
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