Pongamia pinnata shell powder filled sisal/kevlar hybrid composites: Physicomechanical and morphological characteristics

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.

Carbon fiber reinforced areca/sisal hybrid composites for railway interior applications: Mechanical and morphological properties

“…The 90% of carbon fiber is made from poly-acrylonitrile and the remaining 10% by rayon or petroleum pitch. [63]…”

A comprehensive review on polymer composites in railway applications

“…The strong fiber materials such as carbon, aramid and boron were commercialized due to higher stiffness, higher strength and lower density to meet the challenges in the industries during 1960-1970. [7][8][9] These composites are widely used in various sectors like automotive, construction, marine, railway components, engineering industries and other loadbearing structures. While designing the properties of FRP composites, the arrangement/orientation of fiber in the load direction was also considered.…”

Studies on mechanical and thermal properties of cellulosic fiber fillers reinforced epoxy composites

“…The selected drawbacks can be rectified with different techniques like hybridization, chemical treatment of natural fibers, and addition of filler materials to composites. [17][18][19] In these techniques, hybridization plays an important role while increasing the potentiality of overall composites. Hybridization involves the reinforcement of two or more fibers either through interlaminar or intralaminar within the same matrix.…”