Analysis of mechanical properties in natural composites using sisal fiber and nano rice husk powder reinforced epoxy matrix Available to Purchase

In this study, the mechanical properties of epoxy composites reinforced with sisal fibres and rice husk particles have been carefully examined. Tensile, impact, flexural, and hardness tests were used to evaluate the performance of these composite materials with an emphasis on how varied reinforcement levels affected their mechanical characteristics. According to the tensile test findings, the tensile strength increased noticeably, with pure epoxy recording 65 MPa. Sisal fibres improved the tensile strength to 102 MPa, while 1% nano-rice husk particles boosted it to 103 MPa. The results were impressive, with tensile strengths of 140 MPa, 143 MPa, and 152 MPa for additions of 1%, 2%, and 4%, respectively, of rice husk reinforcement. Impact resistance has also significantly increased, with pure epoxy having an impact energy of 5.6 kJ/m2. The Charpy impact strength was improved by the addition of sisal fibres to 8.2 kJ/m2, and by the addition of 1% nano-rice husk particles to 8.5 kJ/m2. The addition of rice husk reinforcement raised the results to 10.4, 12.1 kJ/m2, and 13.7 kJ/m2 with additions of 1%, 2%, and 4%, respectively. The flexural testing demonstrated the enhanced capacity of these composites to withstand bending stresses. Flexural strength of pure epoxy was 70 MPa; sisal fibres enhanced this value to 94 MPa; and 1% nano-rice husk particles increased this value to 96 MPa. Flexural strengths increased to 115 MPa, 121 MPa, and 135 MPa, respectively, when amounts of rice husk reinforcement increased to 1%, 2%, and 4%. Furthermore, the hardness levels significantly increased, with pure epoxy reaching an 80 Shore D. The inclusion of sisal fibres and nano-rice husk particles raised the hardness levels to 88 Shore D and 90 Shore D, respectively. With the addition of rice husk reinforcement at various percentages, hardness values climbed to 95 Shore D, 96 Shore D, and 97 Shore D. These results demonstrate the fascinating potential of these composites for a variety of applications and offer a novel strategy for developing high-performance, environmentally friendly materials. Integration of natural fibres, nano-reinforcements, and agro-waste materials is an attractive new approach for the advancement of materials science and engineering.