复合自捻纱线中纤维组份比例对成纱性能的影响

The effect of fiber component proportion of composite self-twist yarn on yarn properties

讨论了双组份复合自捻纱线中纤维组份比例对复合自捻纱线拉伸性能的影响。通过对涤纶、苎麻、腈纶、羊毛4种组份两两之间采用不同的比例复合进行自捻纺纱并测试其拉伸性能可知:双组份复合自捻纱线的拉伸断裂特征符合双组份混纺纱的断裂强力和断裂伸长率的理论表达式,复合自捻纱的断裂强力和断裂伸长率的理论计算值均高于实验值,而且有的组份比例区域断裂强力和断裂伸长率的理论计算值和实验值的差异较大。经过对不同纤维组份比例复合自捻纱线临界复合比的计算,以及对断裂强力和断裂伸长率的理论曲线和实验曲线的分析可以得出:两种组份复合自捻时应选取大于B组份的临界复合比,以及断裂强力和断裂伸长率的理论计算值和实验值差异较小的复合比例。两种组份复合自捻纺纱都能够得到一个优化的配比范围,使得所纺复合自捻纱线的断裂强力和断裂伸长率均较高。

The effect of fiber components ratio in double component composite self-twist yarn on their tensile properties was discussed.The different composite yarns from four different components such as polyester,ramie,acrylic and wool were self twisted with different proportion and their tensile properties were tested. It shows that tensile fracture characteristics of the double component composite self-twisted yarn are consistent with theoretical expressions of breaking strength and breaking elongation for two-component blended yarn and the theoretical calculation values of the tensile strength and elongation at break for composite self-twist yarn are higher than the experimental values,the difference between the theoretical calculation value and experimental value in some proportion of regional breaking strength and elongation at break is very significant. After calculating the different fiber proportion compound self-twisted yarn critical composite ratio and analyzing the theoretical curves and experimental curves of breaking strength and elongation,it can be drawn that it should select more than B component critical composite ratio and the complex ratio in smaller differences between theoretical calculation value and experiment value of the breaking strength and elongation. When the two-component composite self-twisted yarn were spun,it can get an optimized ratio range to make breaking strength and elongation of the composite self twist yarn higher.