Arabian Journal for Science and Engineering

, Volume 44, Issue 2, pp 1353–1363 | Cite as

A Comparative Study on the Effect of CNT or Alumina Nanoparticles on the Tensile Properties of Epoxy Nanocomposites

  • Şakir Yazman
  • Ahmet SamancıEmail author
Research Article - Mechanical Engineering


In this paper, the mechanical properties of the carbon nanotube (CNT) or alumina \((\hbox {Al}_{2}\hbox {O}_{3})\) nanoparticles (NPs)-modified epoxy composites were investigated experimentally. Composite dog-bone tensile specimens were prepared and tested according to ASTM D638-14 standards with CNT or \(\hbox {Al}_{2}\hbox {O}_{3}\) nanoparticle contents of neat, 0.5, 0.75, 1.0, 1.25, 1.5, 1.75 and 2.0% of the total resin weight. In order to compare the effect of nanoparticle type and content on the mechanical properties, tensile stress–strain curves were drawn for each parameter. Also, the ultimate tensile strength (UTS), Young’s modulus and toughness values were obtained and compared. Considerable improvements of the mechanical properties were observed by adding NPs. The results indicated that the UTS, Young’s modulus, and toughness values reached a maximum with an increment of 27.6, 18.7 and 187.9%, respectively, at \(\hbox {Al}_{2}\hbox {O}_{3}\) nanoparticle content of 1.0 wt%, according to neat epoxy. Due to lower cost and good mechanical properties of the \(\hbox {Al}_{2}\hbox {O}_{3}\) nanoparticle-modified composites, the \(\hbox {Al}_{2}\hbox {O}_{3}\) nanoparticle can be used as a reinforced particle for epoxy composites. On the other hand, it was observed that the CNTs were not as effective as \(\hbox {Al}_{2}\hbox {O}_{3}\) nanoparticles.


Nanocomposites (NCs) Tensile properties CNT \(\hbox {Al}_{2}\hbox {O}_{3}\) nanoparticles (NPs) 


\(\hbox {Al}_{2}\hbox {O}_{3}\)



Carbon nanotube


Single-wall CNT


Dual-wall CNT


Multi-wall CNT






Ultimate tensile strength


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Copyright information

© King Fahd University of Petroleum & Minerals 2018

Authors and Affiliations

  1. 1.Mechanical DepartmentIlgın Technical Science College of Selcuk UniversityKonyaTurkey
  2. 2.Faculty of Aeronautical and Space SciencesNecmettin Erbakan UniversityKonyaTurkey

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