Meta-aramid is a high-performance polymer based on amide aromatic rings, which has excellent properties because of its amide bonds and rigid aromaticity. Meta-aramid has been widely used in the fields of transportation, energy, communication, high-performance protective clothing, military, and aerospace due to its extraordinary thermal stability, mechanical properties, and chemical structural stability. Compared to aliphatic polyamides, meta-aramid has higher stiffness and glass transition temperature. In addition, meta-aramid has poor solubility, and the interfacial compatibility with other materials needs to be improved. Therefore, meta-aramid is modified by copolymerization and surface grafting for the purpose of intensifying its functions. The purpose of this review is to discuss the methods for modification of meta-aramid and the properties of the modified meta-aramids.

中文翻译：

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间位芳纶的功能改性：综述

间位芳纶是一种基于酰胺芳环的高性能聚合物，因其具有酰胺键和刚性芳香性而具有优异的性能。间位芳纶因其非凡的热稳定性、力学性能和化学结构稳定性而被广泛应用于交通、能源、通讯、高性能防护服、军事、航空航天等领域。与脂肪族聚酰胺相比，间位芳纶具有更高的刚度和玻璃化转变温度。另外，间位芳纶溶解性较差，与其他材料的界面相容性有待提高。因此，通过共聚和表面接枝对间位芳纶进行改性，以增强其功能。