Tribological and mechanical performances of newly developed eco-epoxy composites incorporating flax fibres and graphene nanoplatelets
Article
Awwad, KY Eayal, Yousif, BF, Mostafa, Ahmad, Alajarmeh, Omar and Zeng, Xuesen. 2023. "Tribological and mechanical performances of newly developed eco-epoxy composites incorporating flax fibres and graphene nanoplatelets." Journal of Reinforced Plastics and Composites. 42 (17-18), p. 939–952. https://doi.org/10.1177/07316844221143451
Article Title | Tribological and mechanical performances of newly developed eco-epoxy composites incorporating flax fibres and graphene nanoplatelets |
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ERA Journal ID | 4945 |
Article Category | Article |
Authors | Awwad, KY Eayal, Yousif, BF, Mostafa, Ahmad, Alajarmeh, Omar and Zeng, Xuesen |
Journal Title | Journal of Reinforced Plastics and Composites |
Journal Citation | 42 (17-18), p. 939–952 |
Number of Pages | 14 |
Year | 2023 |
Publisher | SAGE Publications Ltd |
Place of Publication | United Kingdom |
ISSN | 0731-6844 |
1530-7964 | |
Digital Object Identifier (DOI) | https://doi.org/10.1177/07316844221143451 |
Web Address (URL) | https://journals.sagepub.com/doi/10.1177/07316844221143451 |
Abstract | The inclusion of both fibre and solid lubricants into polymers may provide a potential solution to maximise their tribological and mechanical performances. This study investigates the effect of incorporating flax fibres and graphene nanoplatelets (GNPs) reinformcements in epoxy matrix composites on their tensile, microhardness and adhesive wear behaviour. Dry adhesive wear experiments were conducted using a block-on-ring (BOR) test rig against a stainless steel ring. Adhesive wear performance was evaluated considering the effect of the volume fraction (Vf) of flax fibre (0, 15, 20 and 25 Vf.%) and different weight fractions of GNPs (1.5 and 3 wt.%). Different applied loads in the 15–60 N range, covering the mild and severe wear regions, were used. The worn surfaces were examined using a scanning electron microscope (SEM). The results revealed that flax fibre potently improved the stiffness and tensile strength of epoxy. Increase in Vf of flax fibre showed a positive tendency to improve the wear resistance of epoxy; however, with an insignificant change in the coefficient of friction (COF). More interestingly, heat distortion temperature (HDT) was found to be the main key parameter controlling the wear behaviours of the composites. SEM observations indicated that severe wear signs – including detachment, fragmentation and fibre debonding – were noted when the interface temperature reached the heat distortion temperature of the epoxy. On the other hand, the inclusion of GNPs reduced the interface temperature during sliding as well as the COF of the flax/epoxy composite. Ultimately, incorporation of flax fibres and GNPs enhanced both mechanical and tribological performances of the eco-composites. |
Keywords | graphene nanoplatelets; GNPs; epoxy matr; flax fibres; tribological properties; mechanical behaviour |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401609. Polymers and plastics |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | School of Engineering |
Tafila Technical University, Jordan | |
Centre for Future Materials |
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