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Pongamia pinnata shell powder filled sisal/kevlar hybrid composites: Physicomechanical and morphological characteristics
Author(s) -
Jagadeesh Praveenkumara,
Ningappa Vidya Sagar Honnenahally,
Puttegowda Madhu,
Girijappa Yashas Gowda Thyavihalli,
Rangappa Sanjay Mavinkere,
Khan Mohammad Rizwan,
Khan Imran,
Siengchin Suchart
Publication year - 2021
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.26160
Subject(s) - materials science , composite material , sisal , ultimate tensile strength , flexural strength , kevlar , epoxy , composite number , absorption of water , izod impact strength test , flexural modulus , pongamia , scanning electron microscope , biochemistry , chemistry , biodiesel , catalysis
Abstract The composite industry was attracted by natural fiber reinforced polymer materials for various valuable engineering applications due to its ecofriendly nature, less cost, and enhanced mechanical and thermal properties. This present work aimed at incorporating sisal and kevlar woven fabrics with the epoxy matrix and studying the effect of Pongamia pinnata shell powder on the sisal/kevlar hybrid composite. Six different laminates were prepared using hand layup method with filler percentage varying 2, 4, and 6 wt%. The prepared laminates cut according to the ASTM standards for performing different mechanical tests. Results reveal that the reduction of void percentage was observed at higher filler contents, while the incorporation of kevlar fabric enhances the impact strength by 279%, tensile strength by 89.77%, and tensile modulus value by 2% in comparison with pure natural fabric laminate L‐1. The flexural strength and interlaminar shear strength were higher for 2% filler composites, while the highest flexural modulus and hardness values were observed for 6% filler‐filled composites. The water absorption percentage was maximum for sisal laminate L‐1 and minimum for kevlar laminate L‐2. The fractured tensile and flexural specimens were analyzed by scanning electron microscopy.