Abstract In recent years, aramid nanofibers (ANFs) have been widely used in polymer reinforcement and toughening fields, due to their large specific surface area, high aspect ratio and retaining the excellent strength, modulus and high temperature resistance of aramid micron fibers (AMFs). It is considered that ANFs have excellent reinforcement effects for polymer composites and much attention has been focused on them. ANFs have excellent water dispersibility, which provides convenience for their reinforced polymers. ANF-reinforced polymers could also impart excellent properties such as high temperature resistance, flame retardancy, and tear resistance. Therefore, it is necessary to find a simple and efficient preparation method of ANFs. However, there is almost no literature review on the research progress of the fabrication of ANFs and ANF-reinforced polymer composites. This article reviews the recent research progress of the preparation of ANFs and the advantages and disadvantages of different preparation methods, and presents the applications in reinforcing various polymer matrices such as epoxy, rubber and composites. Finally, we proposed our own opinions on the issues of ANF-reinforced polymers.

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芳纶纳米纤维的制备及其在聚合物增强中的应用：综述

摘要 近年来，芳纶纳米纤维（ANFs）由于具有较大的比表面积、高纵横比以及保留了芳纶微米纤维（AMFs）优异的强度、模量和耐高温性能，在聚合物增强和增韧领域得到了广泛的应用。 . ANFs 被认为对聚合物复合材料具有优异的增强作用，因此备受关注。ANFs 具有优异的水分散性，这为其增强聚合物提供了便利。ANF 增强聚合物还可以赋予优异的性能，如耐高温、阻燃和抗撕裂。因此，有必要寻找一种简单高效的ANFs制备方法。然而，关于ANFs和ANF增强聚合物复合材料的制备研究进展几乎没有文献综述。本文综述了近年来ANFs制备的研究进展以及不同制备方法的优缺点，并介绍了其在增强环氧树脂、橡胶和复合材料等各种聚合物基体中的应用。最后，我们就 ANF 增强聚合物的问题提出了自己的意见。