Grafen nanoplatelet takviyeli epoksi kompozitlerin mekanik özellikleri ve aşınma davranışı üzerinde takviye oranının etkisi

Yıl 2024, ERKEN GÖRÜNÜM, 1 - 1

Mehmet Emin Demir , Hüsna Topkaya , Tuba Bağatır , Yahya Hışman Çelik

https://doi.org/10.2339/politeknik.1307849

Öz

Nano ölçekteki parçacıkların eklenmesiyle kompozitlerin özellikleri geliştirilmekte ve yeni özellikler kazanılmaktadır. Grafen, iki boyutlu yapısı ve yüksek mukavemeti nedeniyle nanoparçacık takviye elemanları arasında önemli bir yere sahiptir. Bu çalışmada, nano parçacık takviyeli kompozit malzemenin tribolojik davranışı ve mekanik özellikleri incelenmiştir. Nano parçacıklar, %0,1 ila %0,5 ağırlık oranları arasında değişen oranlarda takviyesiz numuneye katılmıştır. Bulgular, grafen nanoparçacıklarının epoksi matris malzemesine eklenmesinin, tüm takviye oranlarında numunelerin mekanik özelliklerini artırdığını göstermiştir. Takviyesiz epoksi numunelerin kopma yükü 415,94 N ve elastisite modülü ise 2,4 GPa olarak belirlenmiştir. Grafen nanoplatelet takviyeli kompozitlerde en iyi mekanik sonuçlar, %0,2 takviyeli kompozitlerde elde edilmiş olup, kopma yükü ve elastisite modülü değerleri sırasıyla 903,13 N ve 4,46 GPa olarak bulunmuştur. Ayrıca, numunelerin tribolojik performansı kuru kayma koşullarında incelenmiştir. Aşınmış yüzeyler SEM kullanılarak incelenmiştir. Grafen nanoplatelet takviyesinin epoksi matris malzemesinin aşınma direncini olumlu yönde etkilediği gözlemlenmiştir.

Anahtar Kelimeler

Grafen nanoplatelet, nano-parçacık, epoksi kompozit, aşınma, çekme testi

Impact of Reinforcement Ratio on Mechanical Properties and Wear Behaviour of Graphene Nanoplatelet Reinforced Epoxy Composites

Öz

New features are gained to the enhanced characteristic of composites with the addition of nanoscale particles. Graphene nanoplatelet has an important place among nanoparticle reinforcing elements due to its two-dimensional structure and high strength. In this study, tribological behaviour and mechanical properties of the nano particle reinforced composite material investigated. Nanoparticles were incorporated into the non-reinforced sample at varying weight ratios, ranging from 0.1% to 0.5%. The findings indicated that the addition of graphene nanoplatelet into the epoxy matrix material enhances the mechanical properties of the specimens across all reinforcement ratios.The failure load of the neat epoxy samples was determined as 415.94 N and the modulus of elasticity as 2.4 GPa. The best mechanical results in graphene nanoplatelet reinforced composites were obtained in 0.2% reinforced composites, and the failure load and elasticity modulus values were found as 903.13 N and 4.46 GPa, respectively. Furthermore, the tribological performance of the samples was examined under dry sliding conditions. The worn surfaces were examined using SEM. The incorporation of graphene nanoplatelet reinforcement has been observed to positively impact the wear resistance of the epoxy matrix material.

Anahtar Kelimeler

Graphene nanoplatelet, nano-particle, epoxy composite, wear, tensile test

Kaynakça

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