Atmakuri Ayyappa, Palevicius Arvydas, Kolli Lalitnarayan, Vilkauskas Andrius, Janusas Giedrius
Faculty of Mechanical Engineering and Design, Kaunas University of Technology, Studuntu 56, 01513 Kaunas, Lithuania.
Faculty of Mechanical Engineering, Sir C.R. Reddy College of Engineering, Vatluru, 522403 Andhra Pradesh, India.
Polymers (Basel). 2021 Mar 11;13(6):864. doi: 10.3390/polym13060864.
In recent years, natural fiber reinforced polymer composites have gained much attention over synthetic fiber composites because of their many advantages such as low-cost, light in weight, non-toxic, non-abrasive, and bio-degradable properties. Many researchers have found interest in using epoxy resin for composite fabrication over other thermosetting and thermoplastic polymers due to its dimensional stability and mechanical properties. In this research work, the mechanical and moisture properties of Caryota and sisal fiber-reinforced epoxy resin hybrid composites were investigated. The main objective of these studies is to develop hybrid composites and exploit their importance over single fiber composites. The Caryota and sisal fiber reinforced epoxy resin composites were fabricated by using the hand lay-up technique. A total of five different samples (40C/0S, 25C/15S, 20C/20S, 15C/25S, 0C/40S) were developed based on the rule of hybridization. The samples were allowed for testing to evaluate their mechanical, moisture properties and the morphology was studied by using the scanning electron microscope analysis. It was observed that hybrid composites have shown improved mechanical properties over the single fiber (Individual fiber) composites. The moisture studies stated that all the composites were responded to the water absorption but single fiber composites absorbed more moisture than hybrid composites.
近年来，天然纤维增强聚合物复合材料因其诸多优点，如低成本、重量轻、无毒、无磨蚀性和可生物降解性等，相较于合成纤维复合材料受到了更多关注。由于其尺寸稳定性和机械性能，许多研究人员对使用环氧树脂来制造复合材料而非其他热固性和热塑性聚合物更感兴趣。在这项研究工作中，对鱼尾葵纤维和剑麻纤维增强环氧树脂混杂复合材料的机械性能和吸湿性能进行了研究。这些研究的主要目的是开发混杂复合材料，并挖掘它们相对于单纤维复合材料的重要性。鱼尾葵和剑麻纤维增强环氧树脂复合材料采用手糊成型工艺制备。基于混杂规则，共制备了五个不同的样品（40%鱼尾葵纤维/0%剑麻纤维、25%鱼尾葵纤维/15%剑麻纤维、20%鱼尾葵纤维/20%剑麻纤维、15%鱼尾葵纤维/25%剑麻纤维、0%鱼尾葵纤维/40%剑麻纤维）。对这些样品进行测试以评估其机械性能和吸湿性能，并通过扫描电子显微镜分析研究其微观结构。结果表明，混杂复合材料相较于单纤维复合材料具有更好的机械性能。吸湿研究表明，所有复合材料都有吸水现象，但单纤维复合材料比混杂复合材料吸收更多的水分。
