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The aim of this paper is to study the effect of volume fraction on mechanical and physical properties such as tensile, flexural, impact, interlaminar shear strength, void content and water absorption of flax and bamboo fibers reinforced hybrid epoxy composites. Flax and bamboo fibers reinforced epoxy resin matrix hybrid composites have been fabricated by compression molding techniques. The hybrid composites were fabricated with different volume fraction of fibers. SEM analysis on the hybrid composite materials was performed to analyze the bonding behavior of materials and internal structure of the fractured surfaces. The effect of chemical treatment of flax and bamboo fibers was verified by FTIR analysis. The results showed that the tensile, impact, flexural and ILSS are maximum for 40:0 (flax: bamboo) hybrid composites. The void content decreased for 20:20 (flax:bamboo) composites due to tightly packed flax fiber and more compatibility towards epoxy resin.

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The changes that can occur in particulate filled and carbon fabric reinforced epoxy polymer matrix (carbon–epoxy) composites with aging (temperature change) can affect its application, performance, and life time. Fiber and particulate-reinforced composites are known to posses the high strength and attractive wear resistance in dry siding conditions. Though reinforcement and/filler type are known to control the properties, less is known about their abrasive wear performance especially with SiC particulates. How these composites performed in abrasive wear situation needs a proper understanding. Hence in this investigation, reports on dynamic mechanical and three-body abrasive wear behavior of carbon–epoxy and silane-treated SiC particulates filled carbon-epoxy composites. The dynamic mechanical analysis test were conducted using DMA Q800 instrument and abrasive wear tests were conducted using the Rubber wheel abrasive wear tester. From the dynamic mechanical analysis result, it was found that the glass transition temperature ( Tg) of 10% SiC-filled carbon–epoxy composite was changed up to maximum 75°C, compared with that of unfilled carbon–epoxy composite. This change in Tg was believed to be due to the interface modification in SiC-filled carbon–epoxy composite. Three-body abrasive wear test results showed that the wear volume loss increased with increasing abrading distance and specific wear rate decreased with abrading distance/load and depends on SiC filler loading. However, the presence of silane-treated SiC in carbon–epoxy showed a promising trend. The worn surface features, when examined through scanning electron microscopy, showed differing trends for unfilled and SiC-filled carbon–epoxy composites.

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