Experimental and modelling of temperature-dependent mechanical properties of CNT/polymer nanocomposites

Tamayo-Vegas, Sebastian and Lafdi, Khalid (2022) Experimental and modelling of temperature-dependent mechanical properties of CNT/polymer nanocomposites. Materials Today: Proceedings, 57. pp. 607-614. ISSN 2214-7853

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Official URL: https://doi.org/10.1016/j.matpr.2022.01.480


Polymer-matrix composites (PMC) reinforced with nanofillers are in constant demand in various industrial applications. Among nano reinforcements, carbon nanotubes (CNT), show a unique combination of physical properties. Often, PMC/CNT composites perform under harsh operating and environmental conditions ranging from aggressive chemical attacks to high temperatures. Material characterization is critical for correct implementation in multifunctional systems. In this study, we have developed two Representative Volume Elements based on the formation of agglomeration above 2 wt% percentage of CNTs. Using finite element analysis (FEA) we studied the mechanical properties of the nanocomposites as a function of temperature. The viscoelastic properties of different percentages of nanofillers (i.e., 0.5, 1, 2, 4, 5 wt%) were derived. Experimental validation was performed with the samples containing the percentages of nanofillers. The samples were tested using Dynamic Mechanical Analysis (DMA) equipment employing the three-point bending method at a fixed frequency. The data shows that the nanofillers drastically influenced the storage, loss modulus and loss factor with a small addition of carbon nanotubes. The viscoelastic properties are presented from temperatures ranging from 40 ℃ to 120 ℃. Finally, a good agreement between the numerical and experimental approaches was found

Item Type: Article
Additional Information: 3rd International Conference on Aspects of Materials Science and Engineering, Chandigarh, India, 5-6 Mar 2022
Uncontrolled Keywords: Polymer-matrix composites (PMCs), Dynamic mechanical thermal analysis, Micromechanics, Finite element analysis, Thermomechanical modelling, Carbon nanotubes
Subjects: F200 Materials Science
H300 Mechanical Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: John Coen
Date Deposited: 25 May 2022 09:40
Last Modified: 26 May 2022 10:08
URI: http://nrl.northumbria.ac.uk/id/eprint/49187

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