Akademik Veri Yönetim Sistemi
JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI, 2025 (ESCI, TRDizin)
Thermoplastic polymers, which are widely used in engineering applications, exhibit varying performance in terms of wear resistance, impact strength, and surface hardness. This study investigates the wear behavior of cast polyamide (PA6G), polyamide (PA6), polypropylene (PP), polytetrafluorethylene (Teflon, PTFE), and medium density polyethylene (MDPE) under applied loads, as well as impact resistance and hardness. The experiments were conducted using a pin-on-disk type UTS Tribometer T10/20, applying different load levels (5 N, 10 N, 20 N), a sliding speed of 0.85 m/s, and a sliding distance of 500 m. Shore hardness values, notched and un-notched impact strengths were determined. The findings indicate that PA6 and PA6G demonstrated the highest wear resistance, while PP and PTFE exhibited the highest wear rates at all load levels. It was determined that the wear rate increased with increasing load for all polymers. In terms of mechanical properties, PA6G had the highest hardness value (85 Shore D), whereas PTFE had the lowest hardness (55 Shore D). Impact test revealed that MDPE absorbed the highest energy, while PA6 and PA6G remained unbroken in un-notched tests. This study highlights that PA6G and PA6 outperform the other polymers in terms of resistance, hardness, and impact strength. In contrast, PP and PTFE, due to their lower mechanical strength, are considered more suitable for low-load-bearing applications.