PPTA纤维的光老化机制及其防紫外改性研究进展  

Research progress of photoaging mechanism and UV-resistant modification of PPTA fibers

作　　者：周欣伊 李娜 于俊荣[1] 胡祖明[1] 王彦[1] Zhou Xinyi;Li Na;Yu Junrong;Hu Zuming;Wang Yan(College of Material Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学材料科学与工程学院,上海201620

出　　处：《产业用纺织品》2023年第7期1-8,15,共9页Technical Textiles

基　　金：国家重点基础研究发展计划课题(2021YFB3700103)。

摘　　要：聚对苯二甲酰对苯二胺(PPTA)纤维具有高强高模、耐高温及轻质等优点,广泛应用于国防安全、航天航空、交通运输和光纤光缆等领域。但PPTA纤维极易发生紫外光老化降解,对其进行防紫外改性可提高其在户外环境下的使用寿命。综述了PPTA纤维的光老化机制,并着重介绍了PPTA纤维的防紫外改性研究进展,其中化学改性方法易使PPTA纤维力学性能下降,物理改性方法则对设备要求较高,尚需探究无损化、低成本的防紫外改性产业化方法。Poly-para-phenylene terephth-alamide(PPTA)fibers have been widely used in the fields of national defense security,aerospace,transportation and optical fiber cables due to their excellent properties of high modulus,high strength,high temperature resistance and light weight.However,PPTA fibers are prone to photoaging degradation.UV-resistant modification on PPTA fibers can improve their outdoor environment application life.The mechanism of photoaging of PPTA fibers was reviewed,and the research progress of UV-resistant modification of PPTA fibers was emphasized.Chemical modification methods are easy to reduce the mechanical properties of PPTA fibers,while physical modification methods have higher requirements for equipment.The effective industrial methods for non-destructive and low-cost UV-resistant modification are still need to be explored.

关 键 词：聚对苯二甲酰对苯二胺(PPTA)纤维 光老化机制 耐紫外改性 研究进展 

分 类 号：TQ342[化学工程—化纤工业]