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Abstract
Natural fibers and particles reinforced composites are being broadly used due to their bio and specific properties such as low density and easy to machine and production with low cost. In this work, water absorption and mechanical properties such as tensile strength, flexural strength and impact strength of recycled jute fibers reinforced epoxy resin were enhanced by treating these fibers with alkaline solution. The recycled jute fibers were treated with different concentration of (NaOH) solution at (25 0C) for a period of (24) hours. From the obtained results, it was found that all these properties are improved when fibers treated with (7.5wt% NaOH) related to untreated fibers. Conversely, the mentioned properties of composites decreased after fibers treated with (10wt% NaOH). In addition, the hybrid composite with recycled jute fibers and recycled walnut shell powder showed obvious enhancement in the above-mentioned properties.
Highlights
Fabricated fibres such as carbon, glass and aramid have been utilized for many years in numerous applications varying from civil structures to aerospace industry
The effects of untreated jute fibers with (a) different weight fraction on the tensile, flexural and impact strength of epoxy resin are shown in fig.6, fig.7 and fig
It was observed from the behavior of stressstrain curve in fig.9, the prepared composite composed of epoxy resin with 10% jute fibers exhibit high tensile strength and tensile modulus with high strain when compared with epoxy resin matrix alone
Summary
Fabricated fibres such as carbon, glass and aramid have been utilized for many years in numerous applications varying from civil structures to aerospace industry. The effect of surface treatment of woven jute fabrics with silicone on stiffness and strength properties of Vinylester polymer are investigated by Basu, it was concluded that all these properties are slightly improved when compared with alkali treated [2]. Ratna and coworkers studied the effect of different natural fibers on the properties of polyester resin; it was observed that both of the tensile strength and modulus properties of jowar fibers is higher than those of sisal and bamboo fiber composites in their study [3].The effect of alkali (4-8% by weight) treatment and elevated temperature (40, 80 and 120 0C) on the mechanical properties of the bamboo fiber polyester composites are studied by Manalo, it was observed that the best mechanical properties that involved (bending, tensile and compressive strength and the stiffness) are increased by (7, 10, 81 and 25% respectively) higher than the untreated composites at (6%) concentration of the alkaline solution. The tensile strength of bamboo composites are improved when tested up
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