纯纺木棉纱上浆性能初探

Explorary research on sizing performance of pure kapok yarns

针对纯纺木棉纱强力低,毛羽多,耐磨性差,织造困难等问题,对27.8 tex纯纺木棉纱进行上浆处理,以达到改善纱线性能,满足织造工艺的目的。根据木棉纱本身特点,选用酸性变性淀粉和聚乙烯醇(PVA)的混合浆料为主浆料,以浆料的含固率、浆料配比等因素为影响因子,以纱线的增强率、减伸率、毛羽降低率为研究对象,利用正交分析法,讨论浆纱的工艺条件对纱线性能的影响。结果表明:含固率较低易于浆料的渗透,有助于纱线力学性能的提高;一定范围内提高PVA浆料含量有利于纱线各项性能指标的提高,加入少量的PVA0588有助于上浆品质的改善。

To resolve the problems of pure kapok yarn such as low strength,much hairiness,poor wear resistance and difficult to weave,sizing experiment of 27.8 tex pure kapok yarns was carried out in order to improve yarn performance and meet the requirements of weaving.According to the characteristics of kapok yarns,a mixed size composed of acidic modified starch and PVA was selected to size kapok yarns,and sizing conditions were varied as a function of solid content and size proportions with a view to investigate the strength enhancement,elongation,and hairiness reduction of the sized yarns.The influences of sizing process on yarn performance were researched by orthogonal method.The results showed that low solid content helps size penetration and facilitates yarn strength and elongation improvement.Within certain scope increasing the content of PVA increases the performance indexes of the sized yarns,and adding a small amount of PVA0588 benefits the improvement of the quality of the sized yarns.