氨纶与双组分复合长丝/棉包芯纱的拉伸弹性  

Tensile elasticity of spandex and bi-component filament/cotton core-spun yarn

作　　者：李丹丹[1] 权利军 金肖克[1] 田伟[1] 祝成炎[1] 

机构地区：[1]浙江理工大学"纺织纤维材料与加工技术"国家地方联合工程实验室,浙江杭州310018

出　　处：《纺织学报》2017年第5期31-36,共6页Journal of Textile Research

基　　金：中国科技部国际科技合作项目(2011DFB51570);浙江理工大学研究生创新研究项目(YCX15002;YCX15010)

摘　　要：为改善传统弹力包芯纱弹性回复性能,以氨纶、双组分复合长丝(CM800)为芯纱,棉纤维为外包纤维,设计了13种弹力包芯纱。探讨氨纶预牵伸倍数、芯纱线密度和弹力包芯纱反复拉伸次数与弹性回复率之间的关系。采用纱线强伸仪测试氨纶/棉、CM800/棉和棉双丝弹力包芯纱的拉伸弹性。结果表明:氨纶的牵伸倍数越大,弹力包芯纱的弹性回复率越小;随着氨纶线密度的增加,包芯纱的弹性回复率先增加后减少;CM800线密度越小,包芯纱的弹性回复率越小;氨纶/棉、CM800/棉和棉双丝弹力包芯纱的定伸长5%和定负荷200 c N反复拉伸次数与纱线弹性回复率的关系均符合幂函数关系,且弹力包芯纱的弹性回复率随着纱线反复拉伸次数的增加而降低;CM800/棉包芯纱的弹性回复率最大,氨纶/棉包芯纱的弹性回复率最小。In order to improve elastic recovery of conventional elastic core-spun yarn, 13 kinds of elastic core-spun yarn were designed taking Lycra and bi-component filament （CM800） as the core-spun yarn and cotton fiber as the outer wrapping fiber. The relationship between the pre-drafting ratio of Lycra, the linear density of core-spun yarn, repeat extension times and elastic recovery percentage of elastic core-spun yarn were studied. This study utilized yarn tensile tester to test the tensile elasticity of spandex/cotton, CM800/cotton and elastic core-spun yarn of cotton/double filament. The result shows that the greater the pre-drafting ratio of spandex, the smaller the elastic recovery percentage of elastic core-spun yarn; and with the increase of the linear density of the linear density of spandex, elastic recovery percentage of core-spun yarn firstly increases and then decreases. The elastic recovery percentage of core-spun yarn has positive linear correlation with the linear density of CM800. The elastic recovery percentage of elastic core-spun yarn was power-function associated with the repeated extension time of yarn elongation 5% and yarn constant load 200 cN. With the increase of yarn extension time, the tensile recovery percentage of elastic core-spun yarn decreases. For all the yarns, the elastic recovery percentage of CM800/cotton core-spun yarn is the greatest and the elastic recovery percentage of spandex/cotton core-spun yarn is the smallest.

关 键 词：氨纶 双组分复合长丝 棉双丝弹力包芯纱 弹性回复率 

分 类 号：TS111.9[轻工技术与工程—纺织材料与纺织品设计]