热湿法纺针织苎麻纱的技术研究

发布时间：2017-12-27 21:41

本文关键词：热湿法纺针织苎麻纱的技术研究　出处：《武汉纺织大学》2017年硕士论文　论文类型：学位论文

【摘要】：苎麻纤维的强力高、吸湿透气性好且具有天然的抗菌抑菌功能。但其初始模量大,断裂伸长率低,故纺纱过程中容易产生毛羽,不易在针织机上成布。因此,改善苎麻纱线的性能,开发适合针织用的苎麻纱线是一项重要的课题。苎麻纤维是一种热塑性纤维,本课题以热定型原理为理论基础,在环锭纺纱机上,自主研发了一套热湿蒸汽调控装置。为了研究热湿蒸汽对苎麻纤维弹性变形能力的影响情况,采取了控制热湿处理时间的实验方式。热湿处理后苎麻纤维的平均断裂伸长率从3.6%增长到了4.3%;平均初始模量从86.5cN/tex降到了61.2cN/tex左右,处理后的纤维的弹性变形能力略有增强,柔软性增加。采用自制的热湿定型装置在细纱机上进行试纺,苎麻纱线的有害毛羽毛羽减少了15%,断裂强力、断裂伸长率和条干CV值均有所改善。热定型器的长度是影响成纱质量的关键因素之一,当热定型器的长度为25mm时,在实验室进行试纺36公支的过程中平均有害毛羽减少19%以上,在企业实际生产中试纺36公支的苎麻纱线时平均毛羽减少了16%以上,平均断裂伸长率增长了3%左右,断裂强度和条干CV值均有所改善。针织布特殊的线圈结构决定了针织用纱的捻系数较小。热湿纺纱工艺的采用可在一定范围内减少纱线捻系数。通过在实验室里试织罗纹针织物,其顶破性能、柔软性能、抗皱性能均有所改善。
[Abstract]:The ramie fiber has high strength, good moisture absorption and permeability, and has natural antibacterial and bacteriostasis function. However, its initial modulus is large and the elongation at break is low, so it is easy to produce hairiness during spinning, and it is not easy to be woven on the knitting machine. Therefore, it is an important issue to improve the performance of ramie yarn and develop the ramie yarn suitable for knitting. Ramie fiber is a thermoplastic fiber. Based on the theory of heat setting, this project independently developed a set of hot and humid steam control devices on the ring spinning machine. In order to study the effect of heat and wet steam on the elastic deformation ability of ramie fiber, an experimental method was adopted to control the time of heat and humidity treatment. The average elongation at break of ramie fiber increased from 3.6% to 4.3% after heat and moisture treatment. The average initial modulus decreased from 86.5cN/tex to 61.2cN/tex, and the elastic deformation capacity of the treated fibers increased slightly and the softness increased. Using self made heat and moisture setting device on spinning frame, the hairy feather feather of ramie yarn is reduced by 15%, breaking strength, elongation at break and CV value of strip are all improved. The length of heat setting is one of the key factors affecting the quality of yarn, when the heat setting is at a length of 25mm in the laboratory spinning of 36 branch of the public in the process of average harmful hairiness is less than 19%, in the actual production of the enterprise in the 36 branch of the public trial spinning ramie yarn when the average Mao Yujian less than 16%, the average elongation growth of about 3%, breaking strength and evenness CV value are improved. The special coil structure of knitted fabric determines that the twisting coefficient of the knitted yarn is small. The use of hot wet spinning technology can reduce the yarn twist coefficient in a certain range. The breaking performance, softness and crease resistance of the knitted fabric were improved by testing the knitted fabric in the laboratory.
【学位授予单位】：武汉纺织大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TS104.7

【参考文献】