Şafak YILDIZHAN, Feyza YEL, Mustafa Atakan AKAR, Umut KUMLU

Atık Lastik Kauçuk Granül/Polyester Polimer Matris Kompozitinin Çekme ve Morfolojik Özellikleri

Bu çalışmada, polimer matrisli kompozit numunelerin üretimi için dolgu malzemesi olarak atık lastik kauçuk granülleri kullanılmıştır. En çok tercih edilen matris malzemelerinden biri olan polyester reçine ile geri dönüştürülmüş atık lastik kauçuk granülleri açık kalıplama yöntemi ile farklı oranlarda birleştirilmiştir. Numuneler, çekme ve sertlik testleri yapılarak deneysel olarak karakterize edilmiştir. Numunelerin morfolojik özellikleri taramalı elektron mikroskobu görüntüleri ile incelenmiştir. Çalışma, polyester reçineye işlenmemiş atık lastik kauçuk granüllerinin eklenmesinin çekme ve akma dayanımı değerlerini düşürürken, malzemenin uzama ve sünekliğinin artmasına neden olduğunu ortaya koymuştur. Morfolojik incelemeler, atık kauçuk granüllerin ve polyester reçinenin ara yüzey yapışmasının zayıf olduğunu ve bu nedenle atık kauçuk granüllerin dolgu malzemesi olarak kullanılmak üzere uygun şekilde işlenmesi gerektiğini göstermiştir. Çalışma, atık lastik kauçuk granül/polyester kompozitlerinin, daha az fosil kaynaklı hammadde kullanılması ve çevre kirliliğinin azalmasına katkıda bulunması gibi faydaları ile yapısal olmayan uygulamalarda kullanılabileceğini göstermiştir.

Anahtar Kelimeler:

Kompozit malzemeler, Atık kauçuk, Mekanik özellikler, Polyester

Tensile and Morphological Properties of Waste Tire Rubber Granule/Polyester Polymer Matrix Composite

In this study, waste tire rubber granules were used as filler material for the fabrication of polymer matrix composite samples. The polyester resin which is one of the most preferred matrix materials and recycled waste tire rubber granules were combined at varying ratios with the open molding method. The samples were characterized experimentally by conducting tensile and hardness tests. The morphological properties of the specimens were examined with scanning electron microscope images. The study revealed that the addition of untreated waste tire rubber granules to polyester resin decreases the tensile and yield strength values, while it causes to increase in elongation and ductility of the material. The morphological examinations showed that waste rubber granules and polyester resin have poor interfacial adhesion and thus the waste rubber granules should be properly treated to be used as filler material. The study indicated that waste tire rubber granule/polyester composites can be used for non-structural applications with the benefits of using less fossil sourced raw materials and contributing to the decrement of environmental pollution.

Keywords:

Composite material, Waste rubber, Mechanical properties, Polyester,

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