对位芳纶纤维耐海水侵蚀性能研究  

studying on the properties of para-aramid anti-erosion in seawater

作　　者：朱正锋[1] 李利铭 

机构地区：[1]中原工学院,河南郑州451191 [2]福建翔升纺织有限公司,福建泉州362000

出　　处：《江西服装学院学报》2015年第2期1-7,共7页Jiangxi Institute Of Fashion Technology

摘　　要：利用超声波对蒸馏水和自配海水中的国产对位芳纶和美国杜邦Kevlar49纤维分别进行不同时间段的处理，通过红外光谱和黏度的检测并计算其处理前后的分子量及聚合度。研究表明两种纤维均由聚对苯二甲酰对苯二胺构成，但国产对位芳纶纤维分子量和聚合度均小于美国杜邦Kevlar49纤维。通过扫描电镜观察和力学性能测试，发现经过超声波处理后的纤维表面出现了裂缝并存在着微细原纤维，呈分丝帚化及细纤维化现象，强力弱环增加，纤维断裂强度与断裂伸长率均下降，并在24h-48h时发生的变化速率达到最大，并利用分子运动理论对纤维的力学损失进行分析。The China PPTA fibers and Kevlar49 fibers made in the USA were put into distilled wa- ter and seawater made by ourself respectively,then using the supersonic-wave to deal with them in different periods. The differences of molecule structures were contrasted through molecular weight and degree of polymerization by the detections of viscosity infrared spectrum and. The research shows that Poly （pphcnyleneterephthalamide is main Component of two PPTA fibers hut the molecular weight and degree of polymerization of China PPTA fihers are inferior to Kevlar49 fibers. Crack appears on the fiber surfaces, presented the fibrillation and plush-like microfine fibres through the SEM observation.Meanwhile the strength weak link increased and breaking strength and elongation at break of fibers lowered.The maximal rates of change occurs when they were processed for 24 to 48 hours. Molecular kinetic theory, was used to study loss of fibers the mechanical property.

关 键 词：对位芳纶 红外光谱 超声波 力学性能 分子运动理论 

分 类 号：TS102.527[轻工技术与工程—纺织工程]