Seid Abdu Mohammed, Adimass Solomon Alemneh
Department of Mechanical Engineering, Wollo University, Kombolcha Institute of Technology, Kombolcha, Ethiopia.
Heliyon. 2024 Oct 10;10(20):e39116. doi: 10.1016/j.heliyon.2024.e39116. eCollection 2024 Oct 30.
The growing demand for sustainable and environmentally friendly materials has spurred interest in natural fiber epoxy composites as a viable substitute for synthetic-based composites. Impact strength is a crucial mechanical property for structural applications and plays a key role in successfully utilizing natural fiber epoxy composites. This comprehensive review explores the impact strength characteristics of different natural fiber epoxy composites by examining the latest research and advancements in the field. The effect of fiber content, fiber length, stacking sequence, and fiber treatment techniques, such as chemical treatments and coupling agents, on epoxy-based composites' impact strength was discussed. Additionally, the effect of fiber hybridization and formulation in determining impact strength is explored, including the curing agents, manufacturing techniques and fillers. The challenges and limitations associated with the impact strength of natural fiber epoxy composites are addressed, along with strategies to overcome them. The review concludes with a summary of the approaches to improve impact strength, including fiber selection, fiber treatment, hybridization, matrix modification, fiber orientation, curing parameters, fiber content, and fiber length. The conclusions of this review provide valuable insights into enhancing the impact strength of natural fiber epoxy composites, paving the way for their wider adoption in various industries and promoting sustainable material alternatives.
对可持续和环保材料日益增长的需求激发了人们对天然纤维环氧复合材料的兴趣，将其作为合成基复合材料的可行替代品。冲击强度是结构应用中的一项关键力学性能，在成功应用天然纤维环氧复合材料方面起着关键作用。本综述通过考察该领域的最新研究和进展，探讨了不同天然纤维环氧复合材料的冲击强度特性。讨论了纤维含量、纤维长度、堆叠顺序以及纤维处理技术（如化学处理和偶联剂）对环氧基复合材料冲击强度的影响。此外，还探讨了纤维混杂和配方在确定冲击强度方面的作用，包括固化剂、制造技术和填料。阐述了与天然纤维环氧复合材料冲击强度相关的挑战和限制，以及克服这些挑战的策略。综述最后总结了提高冲击强度的方法，包括纤维选择、纤维处理、混杂、基体改性、纤维取向、固化参数、纤维含量和纤维长度。本综述的结论为提高天然纤维环氧复合材料冲击强度提供了有价值的见解，为其在各行业更广泛的应用铺平了道路，并推动了可持续材料替代品的发展。
