ABSTRACT

This investigation aimed at finding the effect of weight fraction (10 wt.%, 20 wt.% and 30 wt.%) and fiber orientation (0°, 45° and 90°) on mechanical properties (Tensile, Flexural and Impact) of Carica papaya fiber/epoxy (CPFE) composite. Totally nine composite samples were fabricated by hand layup followed by compression molding method. Testing results revealed that composites containing 20 wt.% and 0° fiber orientation exhibited better mechanical properties such as tensile strength (122 MPa), flexural strength (118.9 MPa) and impact strength (7.8 J) when compared to composite samples with other weight fraction and orientation. The scanning electron microscope (SEM) analysis was used to analyze the fractured surfaces of the composite specimens. The thermal stability of CPFE composites was evaluated by the Thermo Gravimetric (TG) and Differential Thermo Gravimetric (DTG) curves. All the findings led to the conclusion that the CPFE composites are suitable material to make the light weight industrial applications.

摘要

本研究旨在发现重量分数（10 wt.%、20 wt.% 和 30 wt.%）和纤维取向（0°、45° 和 90°）对机械性能（拉伸、弯曲和冲击）的影响番木瓜纤维/环氧树脂（CPFE）复合材料。通过手工铺层和压缩成型方法制造了总共九个复合材料样品。测试结果表明，与其他重量分数的复合材料样品相比，含有 20 wt.% 和 0° 纤维取向的复合材料表现出更好的机械性能，如拉伸强度 (122 MPa)、弯曲强度 (118.9 MPa) 和冲击强度 (7.8 J)和方向。扫描电子显微镜 (SEM) 分析用于分析复合材料试样的断裂表面。CPFE 复合材料的热稳定性通过热重 (TG) 和微分热重 (DTG) 曲线进行评估。所有研究结果得出结论，CPFE 复合材料是适合轻质工业应用的材料。