Influence of Base Oil Polarity on the Transient Shear Flow of Biodegradable Lubricating Greases
The scope of this study is to elucidate the physical mechanisms influencing the transient flow behavior of lubricating greases based on biogenic oleochemicals from a polarity point of view. This includes the mutually interacting influence of base oil polarity and thickening agents on the rheological...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-09-01
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| Series: | Lubricants |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2075-4442/3/3/611 |
| _version_ | 1828370084960141312 |
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| author | Martin Fiedler Rubén Sánchez Concepción Valencia Claudia S. Leopold Erik Kuhn José M. Franco |
| author_facet | Martin Fiedler Rubén Sánchez Concepción Valencia Claudia S. Leopold Erik Kuhn José M. Franco |
| author_sort | Martin Fiedler |
| collection | DOAJ |
| description | The scope of this study is to elucidate the physical mechanisms influencing the transient flow behavior of lubricating greases based on biogenic oleochemicals from a polarity point of view. This includes the mutually interacting influence of base oil polarity and thickening agents on the rheologically-measured mechanical structural degradation in transient shear flow. Due to the high temperature dependence of Keesom forces in the background of polar-active bond mechanisms, the analysis of the transient flow response as a function of temperature allows to attribute the observed influences to differences in base oil polarity. In general, clay-thickened greases show a greater tendency to be rheologically influenced by base oil polarities than soap-thickened lubricating greases. |
| first_indexed | 2024-04-14T06:34:13Z |
| format | Article |
| id | doaj.art-047bb9a393aa4dafa30a4e4485ba340e |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-04-14T06:34:13Z |
| publishDate | 2015-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-047bb9a393aa4dafa30a4e4485ba340e2022-12-22T02:07:32ZengMDPI AGLubricants2075-44422015-09-013361162710.3390/lubricants3030611lubricants3030611Influence of Base Oil Polarity on the Transient Shear Flow of Biodegradable Lubricating GreasesMartin Fiedler0Rubén Sánchez1Concepción Valencia2Claudia S. Leopold3Erik Kuhn4José M. Franco5Fuchs Schmierstoffe GmbH, Friesenheimer Straße 19, 68169 Mannheim, GermanyComplex Fluid Engineering Laboratory, Department of Chemical Engineering, Faculty of Experimental Sciences, University of Huelva, Huelva 21071, SpainComplex Fluid Engineering Laboratory, Department of Chemical Engineering, Faculty of Experimental Sciences, University of Huelva, Huelva 21071, SpainPharmaceutical Technology, Institute of Pharmacy, University of Hamburg, Bundesstr 45, Hamburg 20146, GermanyLaboratory of Machine Elements and Tribology, Department of Mechanical Engineering and Production, Hamburg University of Applied Sciences, Berliner Tor 5, Hamburg 20099, GermanyComplex Fluid Engineering Laboratory, Department of Chemical Engineering, Faculty of Experimental Sciences, University of Huelva, Huelva 21071, SpainThe scope of this study is to elucidate the physical mechanisms influencing the transient flow behavior of lubricating greases based on biogenic oleochemicals from a polarity point of view. This includes the mutually interacting influence of base oil polarity and thickening agents on the rheologically-measured mechanical structural degradation in transient shear flow. Due to the high temperature dependence of Keesom forces in the background of polar-active bond mechanisms, the analysis of the transient flow response as a function of temperature allows to attribute the observed influences to differences in base oil polarity. In general, clay-thickened greases show a greater tendency to be rheologically influenced by base oil polarities than soap-thickened lubricating greases.http://www.mdpi.com/2075-4442/3/3/611biodegradable lubricating greasesAFMoil polarityrheologytransient flow |
| spellingShingle | Martin Fiedler Rubén Sánchez Concepción Valencia Claudia S. Leopold Erik Kuhn José M. Franco Influence of Base Oil Polarity on the Transient Shear Flow of Biodegradable Lubricating Greases Lubricants biodegradable lubricating greases AFM oil polarity rheology transient flow |
| title | Influence of Base Oil Polarity on the Transient Shear Flow of Biodegradable Lubricating Greases |
| title_full | Influence of Base Oil Polarity on the Transient Shear Flow of Biodegradable Lubricating Greases |
| title_fullStr | Influence of Base Oil Polarity on the Transient Shear Flow of Biodegradable Lubricating Greases |
| title_full_unstemmed | Influence of Base Oil Polarity on the Transient Shear Flow of Biodegradable Lubricating Greases |
| title_short | Influence of Base Oil Polarity on the Transient Shear Flow of Biodegradable Lubricating Greases |
| title_sort | influence of base oil polarity on the transient shear flow of biodegradable lubricating greases |
| topic | biodegradable lubricating greases AFM oil polarity rheology transient flow |
| url | http://www.mdpi.com/2075-4442/3/3/611 |
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