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Exploring Mechanical Properties of Hemp, Sisal Fibers and Silicon Carbide Particle Reinforced Hybrid Epoxy Resin Composites

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Abstract:

This study investigates the mechanical properties, water absorption and microstructural analysis of hybrid composites reinforced with Hemp fiber (HF) and Sisal fiber (SF) combined with Silicon Carbide (SiC) particles in epoxy composites. The fibers were treated with 5% NaOH solution for varying durations to enhance their properties. Composite laminates were fabricated using compression molding with different weight fractions of fibers (30 wt%) and SiC particles. The mechanical behaviour of the composites was evaluated through tensile, flexural, and water absorption tests following ASTM standards. The results shows that hybridization with hemp and sisal fibers improves the properties of epoxy composites, with increased hemp fiber content leading to enhanced mechanical performance.These included a tensile strength of 57.82 MPa, flexural strength of 94.7 MPa. The water absorption dipped in 120 hours of immersion in water, with the HFSF/SiC-5 showing the highest water absorption of 6%.The SEM images revealed a homogeneous distribution, fiber pullouts, voids of fibers and filler materials confirmed the presence in the composites.

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Periodical:

Materials Science Forum (Volume 1170)

Pages:

49-56

DOI:

https://doi.org/10.4028/p-Epw8ao

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Online since:

December 2025

Authors:

M. Suriya Prakash*, M. Nallusamy, V.S. Sree Balaji, C. Dharanidharaan

Keywords:

Epoxy, Hemp Fiber, Mechanical Properties, Silicon Carbide, Sisal Fiber

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© 2025 Trans Tech Publications Ltd. All Rights Reserved

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