Currently, the growing field of technology has paved the way for using environmental friendly resources; in particular, plant origin holds ecological concern and renewable aspects. Currently, natural fiber composites have widening attention, thanks to their eco-friendly properties. In the present work, the composite material is reinforced with natural fibers from the bark of banana trees (banana fibers), a material available in Vietnam. Banana fibers are extracted from banana peels, pretreated with NaOH 5%, and then cut to an average length of 30 mm. Banana fiber is reinforced for epoxy resin Epikote 240 with mass percents: 10 wt.%, 15 wt.%, 20 wt.%, and 25 wt.%. The results were evaluated through structural morphology (SEM), mechanical properties, fire resistance, and thermal properties. Experimental results show that the tensile, compressive, and impact strengths of biosynthetic materials up to 20% by weight have increased compared to epoxy neat. Flame retardant and thermal properties are kept stable; 20 wt.% banana fiber gives a limiting oxygen index of 20.8% and satisfactory thermal stability.

中文翻译：

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香蕉纤维增强环氧复合材料：机械性能和阻燃性

目前，不断发展的技术领域为利用环境友好型资源铺平了道路；特别是，植物来源具有生态关注和可再生方面的意义。目前，天然纤维复合材料因其环保特性而受到越来越多的关注。在目前的工作中，复合材料用来自香蕉树皮的天然纤维（香蕉纤维）增强，这是一种在越南可用的材料。香蕉纤维是从香蕉皮中提取出来的，用 5% 的 NaOH 进行预处理，然后切成平均长度为 30 毫米。香蕉纤维增强环氧树脂Epikote 240的质量百分比为：10wt.%、15wt.%、20wt.%和25wt.%。结果通过结构形态 (SEM)、机械性能、耐火性和热性能进行评估。实验结果表明，拉伸、压缩、与纯环氧树脂相比，生物合成材料的冲击强度提高了 20%（重量）。阻燃和热性能保持稳定；20 wt.% 的香蕉纤维提供 20.8% 的极限氧指数和令人满意的热稳定性。