INVESTIGATION OF THE EFFECT OF SLIDING SPEED AND LOAD ON DRY SLIDING FRICTION AND WEAR PROPERTIES OF MULTI WALLED CARBON NANOTUBE FILLED PP NANOCOMPOSITES

Year 2020, , 143 - 154, 31.08.2020

Salih Yetgin

https://doi.org/10.31796/ogummf.717466

Abstract

In this study, tribological properties of multi walled carbon nanotube (MWCNT) filled polypropylene (PP) composites were investigated. without using a compatibilizer. For this purpose, 0.1, 0.2, 0.3, 1 and 2% by weight MWCNT was added to the PP polymer. After PP/ MWCNT granules were obtained in twin screw extruder, wear samples were obtained by injection molding technique. The wear and friction behavior of MWCNT filled PP composites were performed in pin-on-disc system, under dry environment conditions at 0.8, 1.2 and 1.6 m/s sliding speed and 10, 20, 30 and 40N load. The highest coefficient of friction is for pure PP under dry sliding conditions with a value of 0.769 at 1.6m/s sliding speed and under 40N load. The lowest coefficient of friction is 0.393 for 2MWCNT composite under dry sliding conditions at 0.80 m/s sliding speed and 10N load. The wear rate of PP polymer decreased with MWCNT. This reduction was achieved in the ratio of 18%, 31%, 50%, 94% and 233% for the 0.1MWCNT, 0.2MWCNT, 0.3MWCNT, 1MWCNT and 2MWCNT nanocomposites, respectively.

Keywords

PP, MWCNT, Wear, Friction

ÇOK DUVARLI KARBON NANOTÜP KATKILI POLİPROPİLEN NANOKOMPOZİTLERİN KURU SÜRTÜNME VE AŞINMA ÖZELLİKLERİ ÜZERİNE YÜK VE KAYMA HIZININ ETKİLERİNİN İNCELENMESİ

Abstract

Bu çalışmada, uyumlaştırıcı kullanılmadan çok duvarlı karbon nanotüp (ÇDKNT) katkılı Polipropilen (PP) kompozitlerinin tribolojik özellikleri incelenmiştir. Bu amaçla, PP polimerine ağırlıkça %0.1, 0.2, 0.3, 1 ve 2 oranlarında çok duvarlı karbon nanotüp ilave edilmiştir. PP/ÇDKNT granülleri çift vidalı ekstruderde elde edildikten sonra aşınma numuneleri enjeksiyon kalıplama tekniği ile üretilmiştir. Farklı oranlarda ÇDKNT katkılı PP kompozitlerin aşınma ve sürtünme davranışları pim-disk sisteminde ve kuru ortam şartları altında 0.8, 1.2m/s, ve 1.6m/s kayma hızı ve 10, 20, 30 ve 40N yük altında gerçekleştirilmiştir. Uygulanan yük ve kayma hızı aralığında en yüksek sürtünme katsayısı 1.6m/s kayma hızı ve 40N yük altında 0.769 değeri ile katkısız PP polimerinde elde edilirken en düşük sürtünme katsayısı 0.8m/s kayma hızında ve 10N yük altında 2ÇDKNT polimerinde 0.393 değeri ile elde edilmiştir. PP polimerine ilave edilen ÇDKNT ve artan ÇDKNT miktarına bağlı olarak aşınma direncinin arttığı belirlenmiştir. Bu artış 0.1ÇDKNT, 0.2ÇDKNT, 0.3ÇDKNT, 1ÇDKNT ve 2ÇDKNT polimerleri için sırasıyla %18, %31, %50, %94 ve %233 oranlarında elde edilmiştir.

Keywords

PP, ÇDKNT, Aşınma, Sürtünme

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