Recep KOÇ, İbrahim MUTLU

Poli-oksi-metilen (POM) ve kompozitlerinin abrasiv aşınma davranışları

Polioksimetilen (POM) ve kompozitlerinin abrasiv aşınma davranışları pim-disk aşınma cihazı kullanılarak deneysel olarak araştırılmıştır. Abrasiv aşınma çalışmaları 4, 6, 8 ve 10 N farklı yükler, 60, 120, 180 ve 240 m farklı kayma mesafeleri, V= 1 m/s aşındırma hızı gibi şartlar altında yapılmıştır. Aşınma numuneleri 80,220, 400, 800 ve 1200 numaralı silisyum karbür (SiC) abrasiv aşındırıcıya karşı aşındırılmıştır. Farklı yükler ve kayma mesafelerinde POM ve kompozitlerinin abrasiv aşınma miktarları ve özgül aşınma oranları karşılaştırılmıştır. Buna göre, POM+SW polimer kompoziti katkısız POM polimerine göre kayma mesafesi ve yüke bağlı olarak ortalama 2 kat fazla aşınmıştır. POM ve kompozitlerinin abrasiv aşınma yüzeyleri optik mikroskopta incelenmiştir. Silikon, vaks ve cam fiber ilavesinin POM malzemesi üzerinde abrasiv aşınma davranışlarına yaptığı etki tartışılmıştır.

Abrasive wear behaviour of polyoxmethylene (POM) and its composites

Abrasive wear behaviour of polyoxmethylene (POM) and POM based composites were studied experimantally using pin-on disc wear machine. Abrasive wear studies were conducted under the conditions of 4, 6, 8 and 10 N loads, 60, 120, 180 and 240 m sliding distances and 1 m/s sliding speed. Wear specimens were held against the 80, 220, 400, 800 and1200 grade silicon carbide (SiC) abrasive papers. Abrasive wear quantity and specific wear rate of all the composites were compared at different loads and sliding distances. In addition, POM+SW polymer composite was worn 2 times more than unfilled POM polymer with respect to sliding distance and load respectively. Worn surfaces of POM and other composites were observed by optic microscopy. The effect of silicon, vaks and glass fiber fillers on wear behaviour of POM was discussed.

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