Experimental and computational study of mechanical and thermal characteristics of h-BN and GNP infused polymer composites for elevated temperature applications

Choukimath, Mantesh C. and Banapurmath, Nagaraj R. and Riaz, Fahid and Patil, Arun Y. and Jalawadi, Arun R. and Mujtaba, M. A. and Shahapurkar, Kiran and Khan, T. M. Yunus and Alsehli, Mishal and Soudagar, Manzoore Elahi M. and Fattah, I. M. R. (2022) Experimental and computational study of mechanical and thermal characteristics of h-BN and GNP infused polymer composites for elevated temperature applications. Materials, 15 (15). ISSN 1996-1944, DOI https://doi.org/10.3390/ma15155397.

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Polymer-based nanocomposites are being considered as replacements for conventional materials in medium to high-temperature applications. This article aims to discover the synergistic effects of reinforcements on the developed polymer-based nanocomposite. An epoxy-based polymer composite was manufactured by reinforcing graphene nanoplatelets (GNP) and h-boron nitride (h-BN) nanofillers. The composites were prepared by varying the reinforcements with the step of 0.1 from 0.1 to 0.6%. Ultrasonication was carried out to ensure the homogenous dispersion of reinforcements. Mechanical, thermal, functional, and scanning electron microscopy (SEM) analysis was carried out on the novel manufactured composites. The evaluation revealed that the polymer composite with GNP 0.2 by wt % has shown an increase in load-bearing capacity by 265% and flexural strength by 165% compared with the pristine form, and the polymer composite with GNP and h-BN 0.6 by wt % showed an increase in load-bearing capacity by 219% and flexural strength by 114% when compared with the pristine form. Furthermore, the evaluation showed that the novel prepared nanocomposite reinforced with GNP and h-BN withstands a higher temperature, around 340 degrees C, which is validated by thermogravimetric analysis (TGA) trials. The numerical simulation model is implemented to gather the synthesised nanocomposite's best composition and mechanical properties. The minor error between the simulation and experimental data endorses the model's validity. To demonstrate the industrial applicability of the presented material, a case study is proposed to predict the temperature range for compressor blades of gas turbine engines containing nanocomposite material as the substrate and graphene/h-BN as reinforcement particles.

Item Type: Article
Funders: Deanship of Scientific Research at King Khalid University, Research Group Program (Grant No: R.G.P. 2/129/43), Taif University (Grant No: TURSP2020/205), Office of Research and Sponsored Programs of Abu Dhabi University
Uncontrolled Keywords: Polymer material; High-temperature applications; GNP; h-BN; Epoxy
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering > Department of Mechanical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 09 Nov 2023 08:55
Last Modified: 09 Nov 2023 08:55
URI: http://eprints.um.edu.my/id/eprint/41554

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