ABSTRACT

Hybrid laminates made using natural fibers have been finding applications in diverse fields such as automotive parts, building structures and sports goods. These laminates incorporate the benefits of the reinforcements used in constructions. The present work deals with the fabrication of hybrid laminate comprising of the natural fibers areca and kenaf in varying stacking sequences through the hand layup method. Epoxy resin (LY556) and hardener (HY951) are mixed in the ratio of 10:1 to prepare the matrix material. Six different hybrid laminates having five layers of areca and kenaf in different stacking sequences are produced. Two more laminates having either kenaf or areca in all the five layers and are produced to act as reference laminate. The prepared laminates are cut as per ASTM standards and subjected to tensile, compressive, flexural, impact and hardness tests in order to identify the properties of the fabricated laminates. The result shows that composite made with kenaf fiber as skin material and areca as core materials exhibit better tensile, flexural and hardness properties. Likewise, composites with outer layers of areca and core layers of kenaf fibers have high compressive and impact strength. The fractured surfaces after the mechanical tests are investigated through the Scanning Electron Microscope (SEM).

摘要

使用天然纤维制成的混合层压板已在汽车零部件、建筑结构和体育用品等不同领域得到应用。这些层压板结合了建筑中使用的增强材料的好处。目前的工作涉及通过手工铺设方法以不同的堆叠顺序制造由天然纤维槟榔和洋麻组成的混合层压板。环氧树脂（LY556）和硬化剂（HY951）按10：1的比例混合，制成基体材料。生产了六种不同的混合层压板，具有五层槟榔和洋麻以不同的堆叠顺序。另外两个层压板在所有五层中都具有洋麻或槟榔，并被生产用作参考层压板。制备好的层压板按照 ASTM 标准进行切割，并经受拉伸、压缩、弯曲、冲击和硬度测试，以确定制造的层压板的性能。结果表明，以洋麻纤维为表皮、槟榔为芯材的复合材料具有较好的拉伸、弯曲和硬度性能。同样，具有槟榔外层和洋麻纤维芯层的复合材料具有高抗压和抗冲击强度。通过扫描电子显微镜 (SEM) 研究机械测试后的断裂表面。