Mechanical Properties of SLJs with Graphene and MWCNT Nanoparticle-Doped Hybrid Polyurethane Adhesives on Epoxy-Based Carbon Fiber Reinforced Composite Plates

Abstract

In this study, we investigated the mechanical effect of by weight of 0.05%, 0.1% and 0.15% Graphene Nanoplates (GNPs) and MWCNTs doped polyurethane adhesives on single lap joint of Epoxy based and Carbon Fiber Reinforced Composite (CFRP) plates. First of all, Nanocomposite adhesive was produced by adding different weight ratios of nanoparticles into polyurethane adhesive. Then, the tensile test samples were produced using these adhesives and tensile tests were performed in accordance with the ASTM D 882 standard. According to the obtained results, the additive ratios showing the best mechanical properties were determined and single lap joints (SLJ) were produced. Then, the mechanical properties of the SLJ were tested in accordance with the ASTM D1002-10 standard under a constant tensile loading ratio. The highest tensile strength was observed in the 05GR15CNT sample with an increase of 52.67% (14.58 MPa) among the tensile test specimens. On the other hand, the highest shear strength was obtained in the 10GR10CNTSLJ sample with an increase of 14.80% (15.51 MPa) for the SLJ specimens. The distribution of the nanoparticles and the morphology of the failure surfaces were analyzed by scanning electron microscopy (SEM) images.

Keywords

• Mechanical Properties
• Tensile Test
• Nano Particle Doped Polyurethane Adhesives
• Scanning Electron Microscopy

Supporting Institution

NECMETTİN ERBAKAN ÜNİVERİSİTESİ

Project Number

191319006

Ethical Statement

The authors declare no conflict of interest.

Thanks

This study was funded by the Scientific Research Projects Coordination Unit of Necmettin Erbakan University under project number 191319006.

Grafen ve çok duvarlı karbon nanotüp (MWCNT) nanoparçacık katkılı poliüretan yapıştırıcı ile birleştirilmiş epoksi bazlı karbon fiber takviyeli kompozit plakaların tek taraflı bindirme bağlantılarının mekanik özellikleri

Abstract

Bu çalışmada, epoksi esaslı karbon fiber takviyeli kompozit (CFRP) plakaların tek taraflı bindirme bağlantılarda, ağırlıkça %0,05, %0,1 ve %0,15 grafen nanoplatelet (GNP) ve çok duvarlı karbon nanotüp (MWCNT) katkılı poliüretan yapıştırıcıların mekanik etkisi incelenmiştir. İlk olarak, farklı ağırlık oranlarında nanoparçacıklar poliüretan yapıştırıcıya eklenerek nanokompozit yapıştırıcı üretilmiştir. Daha sonra, bu yapıştırıcılar kullanılarak çekme testi numuneleri üretilmiş ve çekme testleri ASTM D 882 standardına uygun olarak gerçekleştirilmiştir. Elde edilen sonuçlara göre en iyi mekanik özellikleri gösteren katkı oranları belirlenmiş ve tek taraflı bindirme bağlantıları (SLJ) üretilmiştir. Ardından, SLJ'nin mekanik özellikleri sabit çekme yükleme oranı altında ASTM D1002-10 standardına uygun olarak test edilmiştir. Çekme test numuneleri arasında en yüksek çekme dayanımı, %52,67 artışla (14,58 MPa) 05GR15CNT numunesinde gözlemlenmiştir. Öte yandan, SLJ numuneleri arasında en yüksek kayma dayanımı, %14,80 artışla (15,51 MPa) 10GR10CNTSLJ numunesinde elde edilmiştir. Nanoparçacıkların dağılımı ve hasar yüzeylerinin morfolojisi, taramalı elektron mikroskobu (SEM) görüntüleri ile analiz edilmiştir.

Keywords

• mekanik özellikler
• çekme testi
• nanoparçacık takviyeli poliüretan yapıştırıcılar
• taramalı elektron mikroskobu

Project Number

191319006

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