羊绒/羊毛/涤纶复合纺及成纱拉伸性能分析

选择羊绒、羊毛和涤纶长丝在传统的环锭纺系统上进行三组分复合纺纱。通过改变三组分的喂入位置、喂入张力来获得不同结构和风格的纱线。试纺了不同捻度和混纺比的3种复合结构纱,即股线、包芯和包缠结构纱,分析了其拉伸性能。纺纱实验和测量结果表明:通过复合改善了羊绒纱的强度;纱线拉伸性能与混纺比、捻度、纱线结构之间存在相关;随着捻度的增加,3种结构复合纱的拉伸性能均符合经典临界捻度理论;复合纱的力学性能因结构不同而不同,股线结构纱拉伸性能最好,包芯结构纱次之,包缠结构纱拉伸性能则最差。

Compound spinning of cashmere/wool/polyester and analysis of its tensile property

Cashmere,wool and polyester(PET) fibers were selected to form a three-strand complex yarn on traditional ring spinning system,and obtained yarns of different structure and style by changing feeding location and tension of three components.Three sorts of compound structural yarn were spun with different twists and blended ratios,such as plied,core and wrapped structural yarn,and yarn tensile property was tested.The spinning experiments and test results show that this could improve the strength of cashmere yarn by compositing and there are some relationships between the tensile property and blended ratio,twist and yarn structure.Along with the increasing of twist,tensile property of the three structural compound yarns all accords with classical critical-twist theory.The mechanical property of compound yarn varies with its structure,and in the case of tensile strength,plied structure yarn is the best,followed by core structure yarn,and wrapped structure yarn is the worst.