Abstract
Objectives: The purpose of this study was to investigate the mechanical and morphological characteristics of various bio fibers reinforced epoxy hybrid composites. Various bio fibers such as snake grass, hemp, banana, bamboo, sansevieria, ramie, sisal, jute, flax, pineapple and kenaf fibers are used as reinforcements in polymer composites and appear more attractive due to their bio degradability, low density, recyclability, easily availability and less CO2 emission. Methods: The hybrid composites reinforced with flax, kenaf, pineapple and sisal fibers were fabricated using a compression molding technique with weight ratio of fiber to resign as 40 : 60 and tested for mechanical properties such as tensile, flexural and impact strength. Findings: Among the different hybrid composites, flax/kenaf/epoxy composite produced better tensile, impact and flexural strength. SEM analysis of the fracture surface indicated that flax/kenaf/epoxy was produced without creating porosity which showed homogeneous distribution of fibers and matrix with better bonding which play an important role in improving the mechanical properties of composites. Keywords: Epoxy, Flax, Kenaf, Pineapple, Sisal
Highlights
In recent years, Bio Fiber Reinforced Composites (BFRC) are used in many sectors due to various attractive properties that they offer such as light weight, biodegradability, renewability, low cost and corrosion resistance
The results indicated that flax/kenaf/epoxy hybrid composite exhibited better mechanical properties and maximum values observed are 28.36 MPa as tensile strength, 94.42 MPa as flexural strength and 3.15 joules as impact strength
It was clear that tensile strength of the hybrid composite increased with 20% vf of flax combined with 20% vf of kenaf fiber
Summary
Bio Fiber Reinforced Composites (BFRC) are used in many sectors due to various attractive properties that they offer such as light weight, biodegradability, renewability, low cost and corrosion resistance. Kenaf fibers provide high stiffness and strength values They have higher aspect ratios making them suitable to be used as reinforcement in polymer matrix composites. Sisal fiber is a stable, strong and versatile material and it Experimental Testing on Mechanical Properties of Various Natural Fibers Reinforced Epoxy Hybrid Composites has been recognized as important resources for polymer composites. Alkaline treatment is used to improve interfacial strength between fiber and matrix and dynamic flexural modulus of the composites[5]. The scope of this present project work is to investigate the effect of various bio fibers on mechanical and morphological properties of epoxy hybrid composites
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