Correlation of Tribological Behavior and Fatigue Properties of Filled and Unfilled TPUs

Lubricants

Gerald Pinter¹  Florian Grün²  Andreas Hausberger³  Chao Wang³  Tanja Stiller³  Thomas Schwarz⁴ 

[1] Chair of Materials Science and Testing of Polymers, Montanuniversität Leoben, 8700 Leoben, Austria;Chair of Mechanical Engineering, Montanuniversität Leoben, 8700 Leoben, Austria;Polymer Competence Center Leoben GmbH, Roseggerstraße 12, 8700 Leoben, Austria;SKF Sealing Solutions Austria GmbH, 8750 Judenburg, Austria;

关键词: fatigue;    filler;    TPU;    tribology;    crack;   

DOI  :  10.3390/lubricants7070060

来源: DOAJ

【 摘 要 】

For a long service time, fatigue has been a typical problem that mechanical sealing materials face. How does it relate to tribological performance? In this study, filled and unfilled thermoplastic polyurethanes (TPUs) were investigated. Dumbbell and faint wait pure shear (FWPS) specimens were used to characterize the fatigue properties and crack growth rate of TPUs, respectively. Additionally, to identify the impact of temperature on fatigue tests, the tests were conducted at room temperature and 80 °C. Different tribological tests were conducted to investigate their tribological properties. Fracture surfaces from fatigue tests and worn surfaces from tribological tests were analyzed using a scanning electron microscope (SEM). Two wear models were verified to correlate between fatigue and tribological properties; one of the models is better for rough counter surfaces, while the other is advantageous if the counter surface is smooth.

【 授权许可】

Unknown