Mechanical and moisture diffusion behaviour of hybrid Kevlar/Cocos nucifera sheath reinforced epoxy composites

Naveen, J.; Jawaid, Mohammad; Zainudin, E.S.; Sultan, M. T. H.; Yahaya, Ridwan

doi:10.1016/j.jmrt.2018.07.023

Cited by 72 publications

(39 citation statements)

References 29 publications

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“…The flexural properties of the composite samples were determined using a three-point bending test at room temperature through a INSTRON 5566 Universal Testing machine (UTM) as per ASTM D 790 standards [29] with a sample dimension of 120 mm × 20 mm × 3 mm. The cross head speed was maintained at 2 mm/min.…”

Section: Methodsmentioning

confidence: 99%

Improved Mechanical and Moisture-Resistant Properties of Woven Hybrid Epoxy Composites by Graphene Nanoplatelets (GNP)

et al. 2019

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This research investigated the effect of adding different wt.% (0, 0.25, 0.50, and 0.75) of GNP (graphene nanoplatelets) to improve the mechanical and moisture resistant properties of Kevlar (K)/cocos nucifera sheath (CS)/epoxy hybrid composites. The laminates were fabricated with different K/CS weight ratios such as 100/0 (S1), 75/25 (S2), 50/50 (S3), 25/75 (S4), and 0/100 (S5). The results revealed that the addition of GNP improved the tensile, flexural, and impact properties of laminated composites. However, the optimal wt.% of GNP varies with different laminates. A moisture diffusion analysis showed that the laminates with a 0.25 wt.% of GNP content efficiently hindered water uptake by closing all the unoccupied pores inside the laminate. Morphological investigations (SEM and FE-SEM (Field Emission Scanning Electron Microscope)) proved that the addition of GNP improved the interfacial adhesion and dispersion. Structural (XRD and FTIR) analyses reveals that at 0.25 wt.% of GNP, all the hybrid composites showed a better crystallinity index and the functional groups presents in the GNP can form strong interactions with the fibers and matrix. A statistical analysis was performed using One-way ANOVA, and it corroborates that the mechanical properties of different laminates showed a statistically significant difference. Hence, these GNP-modified epoxy hybrid composites can be efficiently utilized in load-bearing structures.

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Section: Methodsmentioning

confidence: 99%

Improved Mechanical and Moisture-Resistant Properties of Woven Hybrid Epoxy Composites by Graphene Nanoplatelets (GNP)

et al. 2019

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“…Alternatively, the use of appropriate and validated mathematical models allows the prediction of the material behavior in the long term quickly and economically, eliminating the need to condition the composites in humid environments. Therefore, several authors have conducted studies aiming to predict the behavior of these materials over long periods and under different conditions of moisture exposure [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Non-Fickian Moisture Transport in Vegetable-Fiber-Reinforced Polymer Composites Using a Langmuir-Type Model

2020

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The purpose of this article was to theoretically study the non-Fickian moisture absorption process in vegetable-fiber-reinforced polymer composites using a Langmuir-type model. Here, the focus was on evaluating the effect of the water layer thickness that surrounds the composite during the water migration process. The solutions of the governing equations were obtained using the finite volume method, considering constant thermophysical properties and non-deformable material. The results for the local and average moisture content and concentration, gradient values, and the transient rates of the free and bound (water) molecules in the process were presented and analyzed. It was observed that the water layer thickness strongly influenced the water absorption kinetics, the moisture content gradient values, and the equilibrium moisture content inside the material. It is envisaged that this new approach will contribute to better interpretation of experimental data and a better understanding of the physical phenomenon of water absorption, which directly affects the properties of composite materials.

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“…F-ratio is the ratio between the mean square of BG to the mean square of WG. [31,32] A statistically significant difference was found between the mean tensile strength, since the p value is <0.05 with a 95% confidence level. It means that the influence of Al powder and jute fiber on the tensile strength of PP composites is significant.…”

Section: Tensile Strengthmentioning

confidence: 87%

Spray‐free polypropylene composites reinforced by coupling agent treated jute fiber

Shi

Guan

et al. 2021

Polymer Composites

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In this work, jute fiber and aluminum (Al) powder were used synergistically to improve the mechanical properties and color of polypropylene (PP) composites, which can be used as spray-free materials. The effect of jute fiber and Al powder on the mechanical properties of PP composites was systematically investigated. The results show that jute fiber and Al powder can significantly improve the tensile strength and impact strength of PP. Compared with pure PP, the tensile strength, impact strength, and elastic modulus of jute/Al/PP composites were increased by 55.1%, 78.9%, and 263%, respectively. Compared with Al/PP spray-free materials, they were increased by 11.2%, 9.07%, and 103%, respectively. Statistical analysis by one-way analysis of variance confirmed that Al powder and jute fiber have significant improvement on the mechanical properties of PP composites.

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Mechanical and moisture diffusion behaviour of hybrid Kevlar/Cocos nucifera sheath reinforced epoxy composites

Cited by 72 publications

References 29 publications

Improved Mechanical and Moisture-Resistant Properties of Woven Hybrid Epoxy Composites by Graphene Nanoplatelets (GNP)

Improved Mechanical and Moisture-Resistant Properties of Woven Hybrid Epoxy Composites by Graphene Nanoplatelets (GNP)

Non-Fickian Moisture Transport in Vegetable-Fiber-Reinforced Polymer Composites Using a Langmuir-Type Model

Spray‐free polypropylene composites reinforced by coupling agent treated jute fiber

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