Influence of stacking sequence on flax/kevlar hybrid epoxy composites: Mechanical and morphological studies

In this research work, the natural fiber reinforced hybrid epoxy composites were fabricated using the hand lay‐up method. The flax and kevlar are used as a reinforcement and epoxy as a binding material. This study aims to analyze the influence of stacking sequence and hybridization on the mechanical...

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Bibliographic Details
Published in:Polymer composites 2022-06, Vol.43 (6), p.3782-3793
Main Authors: Kangokar Mukesh, Sathvik, Bettagowda, Nuthan, Praveenkumara, Jagadeesh, Thyavihalli Girijappa, Yashas Gowda, Puttegowda, Madhu, Mavinkere Rangappa, Sanjay, Siengchin, Suchart, Gorbatyuk, Sergey
Format: Article
Language:English
Subjects:
Adhesive bonding
Aramid fiber reinforced plastics
epoxy
Fiber composites
Fiber reinforced polymers
Flax
Flexural strength
Hybrid composites
hybridization
Impact strength
kevlar
Kevlar (trademark)
Morphology
Polymer matrix composites
Shear strength
stacking sequence
Stacking sequence (composite materials)
Tensile strength
Textile composites
Water absorption
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Summary:In this research work, the natural fiber reinforced hybrid epoxy composites were fabricated using the hand lay‐up method. The flax and kevlar are used as a reinforcement and epoxy as a binding material. This study aims to analyze the influence of stacking sequence and hybridization on the mechanical, water absorption, and morphological properties of polymer composites. The results reveal that the neat kevlar reinforced composite achieved a maximum tensile strength, modulus, and impact strength of 189.94 MPa, 2345.35 MPa and 37.16 kJ/m2 respectively with less water absorption behavior. Whereas, the hybrid composite with kevlar as an outer layers and flax as core layers was exhibited a maximum flexural strength, modulus, and inter laminar shear strength of 360.76, 37124.2, and 213.51 MPa, respectively. The water absorption percentage was more in neat natural flax reinforced epoxy composite due to its more hydrophilic nature. The scanning electron microscope analysis reveals the proper bonding and adhesion of both kevlar and flax fabrics with the epoxy matrix.
ISSN:0272-8397
1548-0569
DOI:10.1002/pc.26655