Impact of surface treatment on the mechanical properties of sisal and jute reinforced with epoxy resin natural fiber hybrid composites

ABSTRACT

Natural fiber composites (NFCs) are gaining importance in various fields of engineering due to their ecofriendly nature and low cost. The present work is aimed in studying the mechanical properties such as tensile strength, flexural strength, impact strength, and hardness for natural fiber/epoxy resin composites reinforced with sisal and jute. The composites are prepared by hand lay-up method by varying the proportion of jute fiber. One set of fibers is surface treated with NAOH solution and its impact on mechanical strength was studied. From the results obtained, it was observed that the tensile strength increases by 20%, flexural strength by 25%, impact strength increases by 27.27%, and hardness by 5% for surface treated composites. Scanning electron microscope was used to study the morphology of prepared specimen and fractured specimen. The results indicate that surface-treated composites perform better than the untreated fiber composites.

摘要

天然纤维复合材料（NFC的）变得越来越重要，在各个领域的工程由于其环保性和低成本。本工作旨在研究剑麻和黄麻增强天然纤维/环氧树脂复合材料的拉伸强度、弯曲强度、冲击强度和硬度等力学性能。通过改变黄麻纤维的比例，采用手工铺层法制备了复合材料。用氢氧化钠溶液对一组纤维进行表面处理，研究其对机械强度的影响。结果表明，表面处理的复合材料的拉伸强度提高了20%，弯曲强度提高了25%，冲击强度提高了27.27%，硬度提高了5%。用扫描电子显微镜（SEM）对制备的试样和断裂试样的形貌进行了研究。结果表明，表面处理的复合材料的性能优于未经处理的纤维复合材料。

KEYWORDS:

• Natural fibers
• mechanical properties
• surface treatment
• SEM

关键词:

• 天然纤维
• 力学性能
• 表面处理
• 扫描电子显微镜