双股线捻向对纱线/织物拉伸性能的影响  

Effect of twist direction of double yarn on tensile properties of yarns/fabrics

作　　者：P.Gourkar U.Malu 胡悦(译) 孟粉叶(校) Pranshil Gourkar;Ujwal Malu(D.K.T.E.Society＇s Textile and Engineering Institute,Ichalkaranji/Indi)

机构地区：[1]D.K.T.E.s纺织工程研究所,印度 [2]不详

出　　处：《国际纺织导报》2018年第5期16-18,20,共4页Melliand China

摘　　要：加捻是加工短纤纱、合股纱、线与绳的一道重要工序。加捻通常被定义为纱线两端相对回转,产生螺旋状变形的过程。捻度通常用单位长度内纱线的捻回数(如每米纱线上的捻回数)表示。短纤维加捻可使纤维聚集在一起,从而使纱线具有足够的强度,同时具有一定的连续长度。加捻工序对纱线具有双重作用:一是加捻增加了纱线的横向压力,使纤维间的抱合力增强,为纱线提供足够的强度;二是加捻增大了纤维的螺旋角,并为纱线提供最大的纤维强度。采用意大利Savio公司的Sirius倍捻机制备不同捻向的纱线,并尝试验证不仅捻度在双股线力学性能方面起着重要作用,而且捻向也起着重要作用。测试结果表明,具有与单纱相同捻向的双股线(即单向捻合双股线)具有更好的断裂强力、断裂伸长率、摩擦因数与耐磨性。研究还证实捻向对双股线与由双股线制成的织物拉伸性能的影响。Twisting is a very essential process in the production of staple fiber yarns,twines,cord and ropes.Twist may be defined as spiral disposition of the components of a yarn which is usually the result of relative rotations of 2 ends.Twist is generally expressed as number of turns/unit length of yarn,e.g.turns/m.Twist is inserted to the staple fiber yarns to hold the constituent fibers together,thus giving enough strength to the yarn,producing a continuous length of yarn.Twist in the yarn has a 2-fold effect.Firstly,twist increases cohesion between the fibers by increasing lateral pressure in the yarn,thus giving enough strength to the yarn.Secondly,twist increases helical angle of fibers and applies maximum fiber strength to the yarn.In this research,yarns with different twist directions were made on Sirius 2-for-1 twister by Savio Macchine Tessili SpA,Pordenone/Italy,and an attempt is made to show that not only twist plays an important role in deciding the double yarn properties,but also direction of twist.The results showed that double yarns with the same twist direction i.e.unidirectional twist double yarns exhibit more strength,elongation,coefficient of friction and abrasion resistance.This study proves how twist direction affects the tensile properties of double yarn and fabric prepared from double yarn.

关 键 词：双股线 捻向 拉伸性能 

分 类 号：TS101.92[轻工技术与工程—纺织工程]