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Mechanical and Acoustic Properties of Alkali-Treated Sansevieria ehrenbergii / Camellia sinensis Fiber–Reinforced Hybrid Epoxy Composites: Incorporation of Glass Fiber Hybridization
Applied Composite Materials ( IF 2.3 ) Pub Date : 2020-11-18 , DOI: 10.1007/s10443-020-09840-4
L. Prabhu , V. Krishnaraj , S. Sathish , S. Gokulkumar , M. R. Sanjay , S. Siengchin

The intention behind this research work was to analyse the mechanical as well as acoustic behaviour of Sansevieria ehrenbergii (snake grass) / Camellia sinensis (waste tealeaf) fibers with glass fiber (GF) – reinforcement to form the hybrid epoxy composites. Fibers of S.ehrenbergii/C.sinensis were chemically modified for their effective usage as reinforcement in hybrid composites. Five combinations of hybrid composites were fabricated using hand-operated compression molding techniques by changing the percentage weight of snake grass fiber (SGF) and waste tea leaf fiber (WTLF). The results indicated that the mechanical behaviour of SGF/WTLF composites have been substantially enhanced by hybridization with GF. Enhanced mechanical behavior of hybrid composites is observed as an incremental percentage of SGF composition. The experimental findings show that the weight fraction of 25 wt.% WTLF reinforced with SGF shows a strong acoustic absorption coefficient (AAC) of 0.59 in the frequency range of 2000–6300 Hz as well introduces the potential for acoustic sound proofing applications, such as loudspeaker design, perforated panels, sound recording, and reproduction room. The morphological behavior of hybrid composites, such as fiber pullout, matrix crack, void formation, and interfacial bond between the binder and fibers were observed using a scanning electron microscope.



中文翻译:

碱处理过的虎尾滨藜/山茶纤维增强的混杂环氧树脂复合材料的机械和声学性能:玻璃纤维杂交的结合

这背后的研究工作的目的是为了分析机械以及声学行为虎尾兰ehrenbergii(蛇草)/茶树(废茶叶)与玻璃纤维(GF)纤维-增强以形成混合环氧复合材料。纤维S.ehrenbergii /冬虫夏草进行了化学修饰,以有效地用作杂化复合材料的增强材料。通过更改蛇草纤维(SGF)和废茶叶纤维(WTLF)的重量百分比,使用手动压缩成型技术制造了五种混合复合材料。结果表明,通过与GF杂交,SGF / WTLF复合材料的机械性能得到了显着提高。观察到杂化复合材料增强的机械性能是SGF组成的增量百分比。实验结果表明,用SGF增强的WTLF的重量分数为25 wt。%,在2000-6300 Hz的频率范围内显示出0.59的强吸声系数(AAC),也为隔音应用提供了潜力,例如扬声器设计,穿孔板,录音和复制室。使用扫描电子显微镜观察杂化复合材料的形态学行为,例如纤维拉出,基体裂纹,空隙形成以及粘合剂和纤维之间的界面结合。

更新日期:2020-11-19
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