Recently, natural fiber becomes an alternative to the synthetic fiber for the composites used in aerospace, automotive, sports, packaging and so on, due to its inherent characteristics like biodegradablity, renewablity, high‐specific strength and specific modulus. However, there are still many challenges in the fabrication of the natural fiber composites, including the poor compatibility between the nonpolar matrix and the polar natural fiber, relatively high‐moisture absorption and low‐thermal resistance of natural fibers, etc. Moreover, when manufacturing this type composite, the processing conditions, fiber loading and inherent properties of fiber not only affect the mechanical properties, but also cause products defects, such as warpage, volume shrinkage and weld lines, which needs a rapid numerical design for the mold and manufacturing parameters. Therefore, the properties of natural fiber composites have been widely investigated to satisfy the increasing demand in different applications. This paper intends to review the mechanical properties, flammability, durability, foaming behaviors and numerical simulation of injection molding process of natural fiber composites.

中文翻译：

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天然纤维复合材料的性能，发泡和注塑成型模拟综述

近年来，由于天然纤维的内在特性，例如生物降解性，可更新性，高比强度和比模量，天然纤维已成为用于航空，汽车，运动，包装等领域的复合材料的合成纤维的替代品。但是，天然纤维复合材料的制造仍然存在许多挑战，包括非极性基质和极性天然纤维之间的相容性差，天然纤维的较高吸湿性和低耐热性等。此外，在制造时这种类型的复合材料，其加工条件，纤维含量和纤维的固有性能不仅会影响机械性能，还会导致产品缺陷，例如翘曲，体积收缩和熔合线，需要对模具和制造参数进行快速数值设计。因此，已经广泛研究了天然纤维复合材料的性能，以满足在不同应用中不断增长的需求。本文旨在综述天然纤维复合材料的机械性能，可燃性，耐久性，起泡行为以及注塑过程的数值模拟。