PBO纤维的老化与防护  

Aging and protection of PBO fiber

作　　者：姜婉嘉 王艳红 黎俊 刘丽 黄玉东 Jiang Wanjia;Wang Yanhong;Li Jun;Liu Li;Huang Yudong(School of Chemical Engineering and Environment, North University of China, Taiyuan 030051;School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001)

机构地区：[1]中北大学化学工程与技术学院,山西太原030051 [2]哈尔滨工业大学化工与化学学院,黑龙江哈尔滨150001

出　　处：《合成纤维工业》2018年第2期46-50,共5页China Synthetic Fiber Industry

基　　金：山西省青年自然科学基金(2015021056);青年科技创新项目(QKCZ-jp-2015-02)

摘　　要：聚对苯撑苯并二噁唑(PBO)纤维在应用过程中老化现象严重,研究其老化机理与防老化措施具有十分重要的意义。对国内外PBO纤维老化的最新研究进展进行了综述,PBO纤维的老化主要是光老化、原子氧老化以及湿热老化,并提出了相应的老化机理及防护措施。建议今后PBO纤维的防老化研究应着重在PBO的合成过程中增加其立构规整性,使PBO的相对分子质量分布变窄,同时,改进PBO的聚合、纺丝及后处理工艺,另外,还需进一步探索高模量PBO纤维的老化机理及防护措施。Poly（ p-phenylene benzobisoxazole） （PBO） fiber has serious aging phenomenon during the application. It is significantly important to study the aging mechanism and anti-aging measures. The latest research progress on the aging of PBO fiber was reviewed in China and abroad. The aging of PBO fiber mainly comprises photoaging, atomic oxygen aging and damp-heat aging. The corresponding aging mechanism and protection measures were put forward. It was suggested that the anti-aging research of PBO fiber should be focused on the isotacticity enhancement of PBO during the synthesis process in order to narrow down the relative molecular mass distribution of PBO and the innovation of polymerization, spinning and after-treatment processes of PBO as well; moreover, the aging mechanism and the anti-aging measures of high-modulus PBO fiber should be further explored.

关 键 词：聚对苯撑苯并二噁唑纤维 光老化 原子氧老化 湿热老化 防护 

分 类 号：TQ342.734[化学工程—化纤工业]