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Twist Direction Effect on the Mechanical Properties of Woven Fabric

机译:捻向对机织织物力学性能的影响

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摘要

W pracy rozważono wpływ skrętu na właściwości mechaniczne wzajemnie krzyżujących się przędz osnowy i wątku. Wyprodukowano dwa zestawy przędz bawełnianych o rożnych kierunkach skrętu (Z i S) i rożnych jego wartościach. Uzyskano tkaniny o jednakowej osnowie i wątkach o różnym kierunku skrętu i jego wartościach. Następnie tkaniny badano oceniając efekt wyciągania nitek, odkształcalność i wyboczenie tkaniny. Wybrane parametry badano przy różnej wzajemnej konfiguracji skrętów osnowy i wątku.%This work deals with the role that twist directions at the contact point of warp and weft play in the mechanical behaviour of fabrics. Two sets of 100 percent combed cotton yarns (20 tex) of different twist directions (Z & S) and six twist levels were produced and then used as wefts on an old type Dormer loom (weft insertion of 120 picks/min), in which the warp was 100% combed cotton yarns with 870 Z twist per meter. Hereby we obtained two sets of fabrics in which the warps were all the same but the wefts were different in the twist directions and twist levels. Then the fabrics were compared with respect to the yarn pull-out (two adjacent yarns were pulled out at the same time), the fabric formability (product of bending rigidity and reverse value of initial modulus) and fabric buckling (200-g tensile concentrated force was applied to the fabrics). The results show that the yarn pull-out force, fabric formability and fabric buckling force were greater in the fabrics in which the warp and wefts were unidirectional in the twist directions. In addition, in the group in which the warp and weft twist directions were the same, the maximum pull-out force, maximum form-ability and maximum buckling force belonged to the fabrics in which the nesting angle was around zero.
机译:该工作考虑了加捻对经纱和纬纱相互交叉的机械性能的影响。产生了两组具有不同加捻方向(Z和S)和不同值的棉纱。获得具有相同的经线和纬线但加捻方向不同的织物及其值。随后,对织物进行测试以评估织物的拉线效果,可成形性和屈曲性。在经纱和纬纱的不同相互配置下测试了选定的参数。%这项工作处理的是在经纱和纬纱接触点处的扭曲方向在织物的机械性能中的作用。生产了两组具有不同加捻方向(Z和S)和六个加捻水平的100%精梳棉纱(20 tex),然后将其用作旧式Dormer织机上的纬纱(纬纱插入量为120纬/分)。经纱是每米870 Z捻的100%精梳棉纱。因此,我们获得了两组织物,其中经线都是相同的,但是纬线在加捻方向和加捻水平上是不同的。然后比较织物的纱线拉出度(同时拉出两条相邻的纱线),织物成形性(抗弯刚度和初始模量的反向值的乘积)和织物屈曲(200 g拉伸浓缩)的比较。力施加到织物上)。结果表明,在经向和纬向在加捻方向上是单向的织物中,纱线的拔出力,织物成形性和织物屈曲力均较大。另外,在经纬方向相同的组中,最大拉出力,最大成型性和最大屈曲力属于嵌套角为零附近的织物。

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