赛络纺棉/毛段彩纱结构及其性能

针对环锭纺三罗拉和四罗拉法所纺段彩纱条干不匀的结果问题，采用同轴双后罗拉2组粗纱同锭位藕合等量喂入的方法纺制等线密度赛络纺棉/毛段彩纱，并对成纱的结构及性能进行了分析。纱线的纵向观测结果表明棉与毛的质量比差异越大，分段时间越长，纱线的段彩效果越明显；截面观测结果表明棉和毛纤维在纱中互相压紧并包缠形成类似于太极阴阳鱼的结构；分段中棉与毛质量比差异及纺纱分段时间增加时，纱线的断裂强度变小，CV值变大，但对有害毛羽数量影响不大。该纺纱方法使用天然的棉和毛纤维，既丰富了现有花式纱线的产品种类，也在对细纱机进行简单改装的条件下制得股线风格的毛型感段彩纱，符合绿色低碳循环发展的趋势。

Analysis of structure and properties of cotton/wool siro segment colored yarns

Objective Aiming at uneven of segment colored yarns made by three-roller and four-roller methods, coaxial double rear rollers were adopted to achieve the same linear density cotton/wool siro segment colored yarn by the method of two sets of roving at the same spindle position and equal coupled feeding. Two rovings are fed on the same position, and the drafting control condition of two rovings is consistent. The roller speed can be coupled to achieve equal fiber feeding. However, the spinning process, yarn structure and properties of cotton/wool siro segment colored yarn produced by coaxial roller spinning technology are rarely studied.