尼龙66工业丝作为一种重要工业纤维其性能在生产过程中受多种因素影响。首先概述了尼龙66纤维的特点及应用范围,然后介绍了尼龙66的分子结构特征、凝聚态结构特征与性能,接着详细阐述了尼龙66工业丝的生产工艺和生产装置,包括连续缩聚直接纺丝和间歇缩聚固相缩聚纺丝这两种工艺。重点探讨了影响尼龙66工业丝生产的关键因素及作用规律,包括尼龙66聚合物的分子量、切片含水量及可提取物含量、纺丝箱温度、纺丝组件滤材和滤网、侧吹风冷却工艺、给湿、上油工艺、纺丝速度、卷绕工艺、拉伸工艺、网络度、纺丝环境条件等,并给出了最佳的工艺参数范围。最后总结了尼龙66纤维在中国的发展前景和市场潜力。

As an important industrial fiber,the properties of nylon 66 industrial filament are affected by a number of factors during the production process.The article firstly gave an overview of the characteristics and application scope of nylon 66 fiber,then introduced the molecular structure features,condensed state structure features and properties of nylon 66,and then expounded on the production process and apparatus of nylon 66 industrial filament,including the two processes of continuous polycondensation direct spinning and batch polycondensation solid-state polycondensation spinning.The article emphasized on the key factors affecting the production of nylon 66 industrial filament and action rules,including the molecular weight of nylon 66 polymer,chip moisture content and extractable content,spinning box temperature,spinning component filter material and filter screen,side blowing air cooling process,wetting,oiling process,spinning speed,winding process,drawing process,network degree,spinning environmental conditions,etc.,and provided the optimal range of process parameters.Finally,the article summarized the development prospects and market potential of nylon 66 fiber in China.