Investigation on Mechanical Properties of Polyoxymethylene Reinforced by Carbon Nanotube Using Molecular Dynamics

Document Type : Research Article

Authors

1 aDepartment of Physics, Qazvin Branch, Islamic Azad University, Qazvin,Iran

2 New Technologies Research Center, Amirkabir University of Technology

3 Department of Physics, College of Technical and Engineering, Saveh Branch, Islamic Azad University, Saveh, Iran

Abstract

Polyoxymethylene as a thermoplastic or soft plastic material, in addition to its acceptable mechanical strength, has a much lower density comparing to metals. Therefore, it can be a good alternative to non-ferrous metals in the industry. In this study, nanocomposites of this polymer with carbon nanotubes were used to enhance the strength and improve the mechanical properties of the polymer. Experimental analyses of the nanocomposites have limitations due to the high cost. Therefore, using microscopic scale simulation methods can be a good alternative to study the properties and behavior of these nanocomposites. In this study, the molecular dynamics method is used to simulate the mechanical properties of the nanocomposite. The simulation results obtained in this study show that the density and mechanical properties of the pure polymer such as Young's modulus, yield stress, and the ultimate stress are consistent with experimental values. Moreover, with temperature increase, these mechanical properties will be reduced. Also, these properties by reinforcing polymer with carbon nanotubes which functionalized with hydroxyl and fluoro groups in a nanocomposite structure can modulate Young's modulus from 41.31 to 44.6% and yield stress from 20 to 80% respectively.

Keywords

Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 53, Issue 8
November 2021
Pages 4691-4700

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