Influence of Elevated Temperature on the Mechanical Properties of Hybrid Flax-Fiber-Epoxy Composites Incorporating Graphene
Article
Article Title | Influence of Elevated Temperature on the Mechanical Properties of Hybrid Flax-Fiber-Epoxy Composites Incorporating Graphene |
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ERA Journal ID | 201391 |
Article Category | Article |
Authors | Manalo, Allan, Oun, Amer, Alajarmeh, Omar, Abousnina, Rajab and Gerdes, Andreas |
Journal Title | Polymers |
Journal Citation | 14 (9) |
Article Number | 1841 |
Number of Pages | 18 |
Year | 2022 |
Publisher | MDPI AG |
Place of Publication | Switzerland |
ISSN | 2073-4360 |
Digital Object Identifier (DOI) | https://doi.org/10.3390/polym14091841 |
Web Address (URL) | https://www.mdpi.com/2073-4360/14/9/1841 |
Abstract | Natural fibers are now becoming widely adopted as reinforcements for polymer matrices to produce biodegradable and renewable composites. These natural composites have mechanical properties acceptable for use in many industrial and structural applications under ambient temperatures. However, there is still limited understanding regarding the mechanical performance of natural fiber composites when exposed to in-service elevated temperatures. Moreover, nanoparticle additives are widely utilized in reinforced composites as they can enhance mechanical, thermal, and physical performance. Therefore, this research extensively investigates the interlaminar shear strength (ILSS) and flexural properties of flax fiber composites with graphene at different weight percentages (0%, 0.5%, 1%, and 1.5%) and exposed to in-service elevated temperatures (20, 40, 60, 80, and 100 °C). Mechanical tests were conducted followed by microscopic observations to analyze the interphase between the flax fibers and epoxy resin. The results showed that a significant improvement in flexural strength, modulus, and interlaminar shear strength of the composites was achieved by adding 0.5% of graphene. Increasing the graphene to 1.0% and 1.5% gradually decreased the enhancement in the flexural and ILSS strength. SEM observations showed that voids caused by filler agglomeration were increasingly formed in the natural fiber reinforced composites with the increase in graphene addition. |
Keywords | mechanical properties; elevated temperature; flax fib; natural fiber composite; mechanical properties; SEM; graphene nanoparticles |
Related Output | |
Is part of | Mechanical and durability performance of hybrid flax fibres and graphene composites |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
Public Notes | This article is part of a UniSQ Thesis by publication. See Related Output. |
Byline Affiliations | Centre for Future Materials |
Karlsruhe Institute of Technology, Germany |
https://research.usq.edu.au/item/z0288/influence-of-elevated-temperature-on-the-mechanical-properties-of-hybrid-flax-fiber-epoxy-composites-incorporating-graphene
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