International Journal of Engineering Research

H. Raghavendra Rao ¹, P. Hari Sankar ¹, M. Murali Mohan ¹

Affiliations
1 Department of Mechanical Engineering, G.P.R. Engineering College, Kurnool–518005, IN

Abstract

The chemical resistance of Bamboo/Glass reinforced epoxy hybrid composites to acetic acid, Nitric acid, Hydrochloric acid, Sodium hydroxide, Sodium carbonate, Benzene, Toluene, Carbon tetrachloride and Water was studied. The impact properties of these composites were also studied. The effect of alkali treatment of bamboo fibers on these properties was studied. It was observed that the impact properties of the hybrid composites increase with glass fiber content. These properties found to be higher when alkali treated bamboo fibers were used in hybrid composites. The hybrid fiber composites showed better resistance to the chemicals mentioned above. The elimination of amorphous hemi-cellulose with alkali treatment leading to higher crystallinity of the bamboo fibers with alkali treatment may be responsible for these observations.

Keywords

Bamboo Fiber, Composites, Chemical Resistance, Polyster, Impact Strength, Glass Fiber.

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K. Sudha Madhuri ¹, H. Raghavendra Rao ²

Affiliations
1 School of Mechanical Engineering, RGMCET, Nandyal, IN
2 Dept. of Mechanical Engineering, G. Pulla Reddy Engineering College, Kurnool, IN

Abstract

In this paper, fabrication of hybrid composites reinforced with sisal and glass fibers is treated form and are mixed in the proposition 1:1 in order to reinforce in epoxy resign. Mechanical properties viz., tensile, compressive and hardness are studied to assess the influence of fiber lengths such as 10,20 and 30 mm. The variations of aforementioned properties on hybrid composites with different fiber lengths have been studied. Thermal properties such as Thermo Gravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) are studied to investigate the influence of change in fiber length on treated and untreated hybrid composites. Significant improvement in tensile, hardness and compressive strengths of sisal/glass hybrid composites has been observed by the alkali treatments. In TGA investigation 3°C rise in decomposition temperature, 4°Crise for glass transition temperature is considered for DSC analysis.

Keywords

Epoxy Resin, Glass Fiber, Hybrid Composites, Mechanical Properties, Sisal Fiber, Thermal Properties.

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