This study aims to investigate the mechanical properties of hybrid polymer composites and the addition of primary and secondary additives such as nano-aluminium oxide and nano graphene, to Kenaf epoxy composites. A vacuum-bagging method was used to fabricate the composites. The advantage of vacuum bagging is the reduction of blowholes. The weight ratio of Kenaf fiber 50-60%, matrix 40%, and additives nano-aluminium oxide 0-6%, nano graphene 0-3% were considered. Mechanical properties like Tensile strength, young’s modulus and elongation, flexural strength, flexural modulus, hardness, impact strength, and compression strength were tested.6% nano aluminium oxide and 3% nano graphene show a 125% increase in the tensile strength, a 45% increase in flexural strength, and almost four times higher flexural modulus recorded. 42% increase in compression strength, increase in 40% impact strength. The highest Vickers hardness value of 27.An increase in the combination of primary and secondary fillers increased the mechanical properties.
The research work is the authors own original work, which has not been previously published elsewhere. Keywords: Kenaf fiber, nano aluminium oxide, nano graphene, Vaccum-bagging, mechanical properties.
cellulose present in natural fibers is responsible for thecombinations of different materials.