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Mechanical strength of single-lap joints bonded with nano graphene and MWCNT reinforced epoxy-based nanocomposite adhesives

  • Erdem Eryildiz , Alper Uysal and Erhan Altan
Published/Copyright: March 26, 2019
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Abstract

Nanocomposites have attracted much attention from scientific and industrial areas in recent decades because of their mechanical, physical, thermal and barrier properties and unique design possibilities. These materials have been commercially used in the automotive, electronic, biomedical, packaging etc. industries and their usage areas have been increasing day by day. In this study, nanocomposite adhesives were produced by adding nano graphene and multi-walled carbon nanotube (MWCNT) particles to a single component epoxy adhesive at the ratios of 0.1, 0.2, 0.3, 0.4, 0.5, 0.7, 1, 3 and 5 wt.-%. Then, these nanocomposite adhesives were used to prepare single-lap joints. Shear tests were performed to specify their adhesive shear strengths and joint tensile strengths. It was observed that mechanical strength increased to the reinforcement amount of 0.5 wt.-%. After that, the strength values decreased due to a tendency towards agglomeration, viscosity increment and due to a difficulty in homogeneously applying the adhesive. Furthermore, it was found that nano graphene reinforcement improved the mechanical strength of the epoxy-based adhesive slightly more than MWCNT reinforcement.


*Correspondence Address, Dr. Alper Uysal, Department of Mechanical Engineering, Yildiz Technical University, 34349, Besiktas-Istanbul, Turkey, E-mail:

Erdem Eryildiz obtained his BSc and MSc degrees in the Department of Mechanical Engineering, Yildiz Technical University in 2014 and 2017, respectively. Currently, he is working for a private company in Turkey. His research interests mainly focus on manufacturing technologies, machining and machine tools.

Dr. Alper Uysal has been working in the Department of Mechanical Engineering, Yildiz Technical University, Istanbul, Turkey since 2007. He received his PhD in Mechanical Engineering at Yildiz Technical University in 2012. His areas of expertise are manufacturing technologies, machining, metal and composite cutting, machine tools, and composite materials.

Prof. Erhan Altan is Professor at Yildiz Technical University, Istanbul Turkey. His area of expertise is metal and composite cutting, cutting tools and the slip line modeling of metal cutting.


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Published Online: 2019-03-26
Published in Print: 2019-04-04

© 2019, Carl Hanser Verlag, München

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