ABSTRACT
In recent years, due to the special structure and performance, more and more techniques and methods were developed for preparing core-spun yarn. In this article, the submicron-cotton/polyester composite core-spun yarn is produced on conventional ring spinning, in which the polyester staple fibers as core and the sheath were submicron-cotton (Sm-C) fibers, the Sm-C sliver produced by carding machine equipped with a dish-shaped electrospinning device and the core-spun polyester roving covered Sm-C sliver was produced by the roving frame with the modified bell mouth. Three different ratios of submicron-cotton/polyester roving were spun based on the prepared Sm-C sliver, which shows roving formed a core-sheath structure. The coverage rate reaches 100%. The 85Sm-C/15T performance shows that the weight CV (1.0%) and evenness CV (5.0%), then use it to prepare three kinds of spun yarns with 800TPM, 900TPM, and1000TPM, when the twist was increased the structure of the yarn becomes more compact, the long-staple cotton fibers and submicron fibers were intermingled and entangled with each other, and the strength of 900TPM increases by 18.79% compared with 800TPM, the evenness CV decreases by 2.22%, compared with 900TPM, the 1000TPM elongation breaking decreased 9.33%. Consequently, the modified spinning methodology improved the coverage rate, structure, and mechanical properties of submicron-cotton/polyester composite core-spun yarn.
近年来, 由于包芯纱的特殊结构和性能, 开发了越来越多的包芯纱制备技术和方法. 本文采用常规环锭纺纱工艺生产了亚微米棉/涤纶复合包芯纱, 其中涤纶短纤维为芯, 护套为亚微米棉 (Sm-C) 纤维, 采用配有碟形静电纺丝装置的梳棉机生产的Sm-C条和采用改进喇叭口粗纱机生产的包芯涤纶粗纱生产的Sm-C条, 以制备的Sm-C条为原料, 纺制了三种不同配比的亚微米棉/涤纶粗纱, 粗纱形成了芯鞘结构, 覆盖率达100%. 85Sm-C/15 T的性能表明, 重量CV (1.0%) 和条干CV (5.0%), 然后用其制备800TPM, 900TPM和1000TPM三种细纱, 当捻度增加时, 纱线结构变得更加紧密, 长绒棉纤维和亚微米纤维相互交织, 与800TPM相比, 900TPM的强度提高了18.79%, 均匀度CV降低了2.22%, 1000TPM的断裂伸长率降低了9.33%. 因此, 改进后的纺纱方法提高了亚微米棉/涤纶复合包芯纱的包覆率, 结构和力学性能.
Acknowledgments
We gratefully acknowledge the financial support provided by the Chang Jiang Youth Scholars Program of China and grants (51773037 and 51973027) from the National Natural Science Foundation of China.