改善苎麻及其混纺纱弹性研究

本文主要为了改善苎麻纱和麻棉纱的弹性,对苎麻纱、麻棉纱和棉纱进行了碱处理。并根据前人所做的工作,即有张力状态下碱处理和松弛状态下碱处理,其纱线性能存在较大差异,因而本文着重考虑在不同张力状态下进行碱处理,研究结果表明,采用低张力进行碱处理。其苎麻纱和麻棉纱的最大变形能力即断裂伸长显著增加,初始弹性模量显著下降,纱线变形恢复能力显著提高。     

PET(POY)加工ATY缝纫线的研究——强度和热收缩率

选用PET(POY)长丝通过空气变形加工缝纫线,为了提高缝纫线的强力和降低其热收缩率,对拉伸倍数、空气变形超喂率、热定型区温度和超喂率以及稳定区拉伸倍数进行了系统的实验,并分析了以上工艺参数对缝纫线的强力和热收缩率的影响.     

Tensile property of Pneumatic spliced Short-staple Ring Spun Yarns

The tensile property of the spliced yarn splice under different splicing conditions has been investigated. The retained spliced strength of the splice spliced under different splicing conditions was obtained as the indicator for the performance of the splicer under that particular splicing condition. The results showed that, the length of the yarn tails and the yarn linear density are the parameters that has the most important effect to the tensile property of the spliced yarn.