Alumina-Grafen Hibrit Dolgu Karışımlarının, Polipropilen Matriksin Mekanik Özelliklerine Etkisinin Incelenmesi.

Öz

Polimer tabanlı kompozit malzemelerin yüksek dolgu oranlarındaki mekanik mukavemetlerinde meydana gelen belirgin kayıpların, karbon tabanlı bileşenlerin matrise ilavesi ile mekanik özelliklerin iyileştirilmesi günümüzde çalışılan konulardandır. Bu çalışmada polipropilen matrise %40 ağırlıkça ilave edilen 20 mikron altı alüminyum oksit (Al₂O₃) parçacıklarının yarattığı mekanik etkilerin iyileştirilmesi amacı ile dolgu kompozisyonuna 1, 3, 5 ve %7 oranında grafen nano plakları ilave edilmiştir. Yüksek hızlı termo-kinetik mikser de karıştırılarak elde edilen hibrit kompozitler, evrensel mekanik test cihazı ile çekme ve 3 nokta eğme testleri yapılarak mekanik özellikleri araştırılmıştır. Çekme numunelerinin kopma noktalarından alınan örnekler taramalı elektron mikroskobu altında incelenerek, alümina ve grafen parçacıklarının dağılımı gözlemlenmiştir. Elde edilen veriler ışığında, grafen parçacıkları ilave edilen PP tabanlı kompozitlerin çekme dayanımlarında %12 ve eğilme dayanımlarının %20 in üstün de bir iyileşme sağladığı görülmüştür. Grafen parçacıklarının PP içinde dağılımlarının homojen ve düzenli olduğu anlaşılmıştır.    

Anahtar Kelimeler

• Kompozit,PP,Grapfen

Investigation Of The Effect Of Alumina-Graphene Hybrid Filler Mixtures On The Mechanical Properties Of Polypropylene Matrix.

Öz

Improvement of mechanical properties of polymer-based composite materials with high fill ratio and mechanical properties is the main reason for the improvement of mechanical properties by addition of carbon-based compounds to the matrix. In this study, 1, 3, 5 and 7% nano plaques were added to the filling composition in order to improve the mechanical effects of the 14-micron aluminum oxide (Al₂O₃) particles added to the polypropylene matrix by 40% by weight. Hybrid composites were obtained by mixing in high-speed thermo-kinetic mixer, tensile and 3 point bending tests were performed with universal mechanical test machine and their mechanical properties were investigated. The samples taken from the rupture points of the tensile specimens were examined under a scanning electron microscope (SEM) and the distribution of alumina and graphene particles was observed. According to data, it was seen that tensile strength of composites was increased nearly 12% and flexural strength increased almost 20% with the graphene particles addition into the PP matrix. The distribution of graphene particles in PP was homogenous and regular.

Anahtar Kelimeler

• Composite,PP,Graphene

Kaynakça

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