LÜTFİYE ALTAY, METEHAN ATAGÜR, Müslüm ERBEKTAŞ, MEHMET SARIKANAT

Grafit Nanoplaka Takviyeli Ultra Yüksek Molekül Ağırlıklı Polietilen Tabanlı Nano-Kompozit Malzeme Geliştirilmesi ve Karakterizasyonu

Bu çalışmada, 0, 0.02, 0.05, 0.1 ve %0.15 ağırlık oranlarında grafit (Gr) ve ultra yüksek molekül ağırlıklı polietilen (UHMWPE) etanol içerisinde dağıtılarak grafit takviyeli UHMWPE nano-kompozit malzemeler üretilmiştir. UHMWPE ve Gr takviyeli kompozit malzemelerin termal performansları termogravimetrik analizler ile tespit edilmiştir. ULMWPE ve kompozit malzemelerin kimyasal yapısı Fourier Dönüşümlü Kızılötesi Spektroskopi ile incelenmiştir. Bunlara ek olarak; Gr katkısının polimerin çekme özellikleri, yüzey pürüzlülüğü, yoğunluk ve sertlik üzerine etkileri incelenmiştir. Bu sonuçlara göre, Gr eklendikçe kompozit malzemelerin maksimum bozunma sıcaklıkları fazla etkilenmemek ile birlikte elastisite modülü ve sertlik artmakta, yüzey pürüzlülüğü düşmektedir. Çekme dayanımı ise ağırlıkça %0.1 Gr katkı oranına kadar artmakta bu orandan sonra düşmektedir.

Development and Characterization of Graphite Nanoplate Reinforced Ultra High Molecular Weight Polyethylene Based Nano-Composite Materials

In this study, graphite filled ultra high molecular weight polyethylene nano-composite materials were produced by dispersing 0, 0.02, 0.05, 0.1 and 0.15wt % graphite (Gr) and ultra high molecular weight polyethylene(UHMWPE) in ethanol. The thermal performances of UHMWPE and Gr filled composite materials were determined by thermogravimetric analysis. The chemical structure of UHMWPE and composite materials was investigated by Fourier Transform Infrared Spectroscopy. Additionally; the effects of Gr on the tensile properties, surface roughness, density and hardness of polymer were investigated. According to these results, as the graphite is added, the maximum degradation temperatures of the composite materials are not affected much, and the modulus of elasticity and hardness increase and the surface roughness decreases. The tensile strength increased with the addition of Gr up to 0.1wt %, but decreased with the further increase of Gr weight fraction.

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