Investigation of Wear and Friction Performance of Polyetheretherketone and its Composites against Polyester Matrix Thermoset Composite Material

Abstract

This study aims to find the best wear resistant polymer or polymer composite pair that can be used in electrical contact breaker applications. For this, the pin-on-disc (PoD) wear test machine was used. Poly-ether-ether-ketone (PEEK) polymer and 20% and 30% by weight glass fiber (GF) reinforced PEEK composites were used as pin material. Long glass fiber reinforced and calcium carbonate mineral-filled unsaturated polyester composite material was used as the counterpart material. In the tribological experiments, while the effect of glass fiber reinforcement on wear was examined, the effect of the applied pressure was also investigated. The highest wear rate was obtained in PEEK+30% GF polymer composite with 4.42x10-14 m2 N-1 under 5.30 MPa pressure, while the lowest wear rate was obtained with 1.13x10-14 m2 N-1 under 1.77 MPa pressure. As a result of the study, it was determined that among the materials subjected to the wear test, the long glass fiber reinforced and calcium carbonate filled pure polyester composite material and the pure PEEK polymer pair were the most suitable pairs for electrical contact breaker applications.

Keywords

• PEEK
• Tribology
• thermoplastics
• composites
• glass fiber

Polietereterketon ve Kompozitlerinin Polyester Matrisli Termoset Kompozit Malzemesine Karşı Aşınma ve Sürtünme Performanslarının İncelenmesi

Abstract

Bu çalışma, elektriksel kontak kesici uygulamalarında kullanılabilecek aşınmaya dayanıklı en iyi polimer veya polimer kompozit çiftini bulmayı hedeflemiştir. Bunun için disk üzerinde pim aşınma düzeneği kullanılmıştır. Pim malzemesi olarak katkısız poli-eter-eter-keton (PEEK) polimeri ile ağırlıkça %20 ve %30 oranında cam elyaf (CE) takviyeli PEEK kompozitleri kullanılmıştır. Karşı disk malzeme olarak ise uzun cam elyaf takviyeli ve kalsiyum karbonat mineral dolgulu doymamış polyester kompozit malzeme kullanılmıştır. Tribolojik deneylerde cam elyaf katkı oranının aşınmaya etkisi incelenmiş aynı zamanda uygulanan basıncın etkisi de araştırılmıştır. Tribolojik testler, oda sıcaklığında 1.77, 3.53 ve 5.30 MPa basınçlar altında ve 30 m/dak kayma hızında oda sıcaklığında gerçekleştirilmiştir. Elde edilen sonuçlardan, en yüksek aşınma oranı 5.30 MPa basınç altında 4.42x10-14 m2 N-1 değerine sahip PEEK+%30CE polimer kompozitinde elde edilmiştir. En düşük aşınma oranı ise 1.77 MPa basınç altında 1.13x10-14 m2 N-1 değeri ile katkısız PEEK polimerinde elde edilmiştir. Çalışma sonucunda teste tabi tutulan malzemeler arasında, uzun cam elyaf takviyeli ve kalsiyum karbonat dolgulu katkısız polyester kompozit malzemesi ile katkısız PEEK polimer çifti, elektrik kontak kesici uygulamaları için en uygun çift olduğu belirlenmiştir.

Keywords

• Triboloji
• termoplastikler
• kompozitler
• PEEK
• cam elyaf

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