Effect of Polypropylene Modification by Impregnation with Oil on Its Wear and Friction Coefficient at Variable Load and Various Friction Rates
Laboratorial two-body wear testing was carried out in order to assess effects of polypropylene modification by impregnating it with oils on friction coefficient and wear in comparison to those parameters of unmodified polypropylene, Teflon, and polyamide during operation under conditions of sliding...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2017/9123586 |
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| author | Paweł Sędłak Beata Białobrzeska Tomasz Stawicki Piotr Kostencki |
| author_facet | Paweł Sędłak Beata Białobrzeska Tomasz Stawicki Piotr Kostencki |
| author_sort | Paweł Sędłak |
| collection | DOAJ |
| description | Laboratorial two-body wear testing was carried out in order to assess effects of polypropylene modification by impregnating it with oils on friction coefficient and wear in comparison to those parameters of unmodified polypropylene, Teflon, and polyamide during operation under conditions of sliding friction without lubrication. Wear behaviour of the tested specimens was investigated using ASTM G77-98 standard wear test equipment. Recording program made it possible to visualise and record the following parameters: rotational speed and load, linear wear, friction coefficient, temperature of the specimen, and ambient temperature. In addition, wear mechanisms of the analysed materials were determined with use of scanning electron microscopy. In the case of the remaining tested polymers, the most important mechanism of wear was adhesion (PP, PTFE, PA 6.6, and PA MoS2), microcutting (PTFE, PA 6.6, and PA MoS2), fatigue wear (PTFE), forming “roll-shaped particles” combined with plastic deformation (PA 6.6 and PA MoS2), and thermal wear (PP). Impregnation of polypropylene with engine oil, gear oil, or RME results in significant reduction of friction coefficient and thus of friction torque, in relation to not only unmodified polypropylene but also the examined polyamide and Teflon. |
| format | Article |
| id | doaj-art-44e510e29f614faca7b249a6989ad75b |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-44e510e29f614faca7b249a6989ad75b2025-02-03T01:32:05ZengWileyInternational Journal of Polymer Science1687-94221687-94302017-01-01201710.1155/2017/91235869123586Effect of Polypropylene Modification by Impregnation with Oil on Its Wear and Friction Coefficient at Variable Load and Various Friction RatesPaweł Sędłak0Beata Białobrzeska1Tomasz Stawicki2Piotr Kostencki3Department of Agrotechnical Systems Engineering, West Pomeranian University of Technology, Papieza Pawla VI Street 1, 71-459 Szczecin, PolandDepartment of Materials Science, Welding and Strength of Materials, Wrocław University of Technology, Smoluchowskiego Street 25, 50-370 Wrocław, PolandDepartment of Agrotechnical Systems Engineering, West Pomeranian University of Technology, Papieza Pawla VI Street 1, 71-459 Szczecin, PolandDepartment of Agrotechnical Systems Engineering, West Pomeranian University of Technology, Papieza Pawla VI Street 1, 71-459 Szczecin, PolandLaboratorial two-body wear testing was carried out in order to assess effects of polypropylene modification by impregnating it with oils on friction coefficient and wear in comparison to those parameters of unmodified polypropylene, Teflon, and polyamide during operation under conditions of sliding friction without lubrication. Wear behaviour of the tested specimens was investigated using ASTM G77-98 standard wear test equipment. Recording program made it possible to visualise and record the following parameters: rotational speed and load, linear wear, friction coefficient, temperature of the specimen, and ambient temperature. In addition, wear mechanisms of the analysed materials were determined with use of scanning electron microscopy. In the case of the remaining tested polymers, the most important mechanism of wear was adhesion (PP, PTFE, PA 6.6, and PA MoS2), microcutting (PTFE, PA 6.6, and PA MoS2), fatigue wear (PTFE), forming “roll-shaped particles” combined with plastic deformation (PA 6.6 and PA MoS2), and thermal wear (PP). Impregnation of polypropylene with engine oil, gear oil, or RME results in significant reduction of friction coefficient and thus of friction torque, in relation to not only unmodified polypropylene but also the examined polyamide and Teflon.http://dx.doi.org/10.1155/2017/9123586 |
| spellingShingle | Paweł Sędłak Beata Białobrzeska Tomasz Stawicki Piotr Kostencki Effect of Polypropylene Modification by Impregnation with Oil on Its Wear and Friction Coefficient at Variable Load and Various Friction Rates International Journal of Polymer Science |
| title | Effect of Polypropylene Modification by Impregnation with Oil on Its Wear and Friction Coefficient at Variable Load and Various Friction Rates |
| title_full | Effect of Polypropylene Modification by Impregnation with Oil on Its Wear and Friction Coefficient at Variable Load and Various Friction Rates |
| title_fullStr | Effect of Polypropylene Modification by Impregnation with Oil on Its Wear and Friction Coefficient at Variable Load and Various Friction Rates |
| title_full_unstemmed | Effect of Polypropylene Modification by Impregnation with Oil on Its Wear and Friction Coefficient at Variable Load and Various Friction Rates |
| title_short | Effect of Polypropylene Modification by Impregnation with Oil on Its Wear and Friction Coefficient at Variable Load and Various Friction Rates |
| title_sort | effect of polypropylene modification by impregnation with oil on its wear and friction coefficient at variable load and various friction rates |
| url | http://dx.doi.org/10.1155/2017/9123586 |
| work_keys_str_mv | AT pawełsedłak effectofpolypropylenemodificationbyimpregnationwithoilonitswearandfrictioncoefficientatvariableloadandvariousfrictionrates AT beatabiałobrzeska effectofpolypropylenemodificationbyimpregnationwithoilonitswearandfrictioncoefficientatvariableloadandvariousfrictionrates AT tomaszstawicki effectofpolypropylenemodificationbyimpregnationwithoilonitswearandfrictioncoefficientatvariableloadandvariousfrictionrates AT piotrkostencki effectofpolypropylenemodificationbyimpregnationwithoilonitswearandfrictioncoefficientatvariableloadandvariousfrictionrates |