文献类型：期刊文献

中文题名：芯丝种类与纺纱速度对喷气涡流纺包芯纱性能的影响

英文题名：Influence of core filament type and delivery speed on performance ofair-jet vortex spun core-spun yarns

作者：缪璐璐[1];董正梅[1,2];朱繁强[1];荣慧[3];何林伟[4];郑国全[4];邹专勇[1]

机构：[1]绍兴文理学院浙江省清洁染整技术研究重点实验室,浙江绍兴312000;[2]中纺院(浙江)技术研究院有限公司,浙江绍兴312000;[3]百隆东方股份有限公司,浙江宁波315206;[4]绍兴国周纺织新材料有限公司,浙江绍兴312000

年份：2023

卷号：44

期号：12

起止页码：50

中文期刊名：纺织学报

外文期刊名：Journal of Textile Research

收录：CSTPCD、、Scopus、CSCD2023_2024、北大核心、CSCD、北大核心2020

基金：国家级大学生创新创业训练计划项目(202110349024);绍兴文理学院研究生科研课题项目(Y20210701);绍兴文理学院国际合作项目(2019LGGH1001)。

语种：中文

中文关键词：喷气涡流纺;包芯纱;纺纱速度;聚酯长丝;纱线性能

外文关键词：air-jet vortex spinning;core-spun yarn;delivery speed;polyester filament;yarn property

中文摘要：为制备结构性能优良的喷气涡流纺包芯纱,以粘胶短纤维作为外包纤维,不同种类聚酯长丝(涤纶拉伸变形丝(DTY)、涤纶全拉伸丝(FDY)和聚对苯二甲酸丁二酯纤维长丝(PBT))为芯丝制备喷气涡流纺包芯纱。比较分析了不同种类芯丝喷气涡流纺包芯纱与纯粘胶喷气涡流纱的性能差别,并采用双因素方差分析法探究了芯丝种类与纺纱速度对包芯纱强伸性、条干CV值和毛羽H值的影响情况。研究结果表明:相较于不含芯丝的喷气涡流纺纱线,包芯纱的力学性能明显提升,毛羽H值有所降低;芯丝种类是影响喷气涡流纺包芯纱性能的主要因素,对断裂强度、断裂伸长率和毛羽H值影响极为显著,以DTY为芯丝的包芯纱断裂强度最大,以PBT为芯丝的包芯纱断裂伸长率最大,以FDY为芯丝的包芯纱毛羽H值最低;纺纱速度仅对毛羽H值有显著性影响,3种包芯纱的毛羽H值都随纺纱速度的增大而增大,其中PBT包芯纱毛羽H值增长速率最快。

外文摘要：Objective In order to optimize the structure and performance of core-spun yarns made by air-jet vortex spinning,the paper reports on the effects of core filament types and delivery speed on yarn properties,so as to better predict yarn properties and guide the product development of core-spun yarns based on air-jet vortex spinning.Method The core-spun yarns were prepared using viscose staple fiber as the sheath and different polyester filaments,including polyester draw textured yarn(DTY),polyester full draw yarn(FDY),and polybutylene terephthalate filament yarn(PBT),as the core filament.Through studying the yarn performance test and scanning electron microscope(SEM)images,the differences between different types of core-spun yarns and pure viscose yarns made by Murata vortex spinning were compared and analyzed,and the effects of core filament types and delivery speed on the core-spun yarn tenacity and elongation,evenness CV value and hairiness H value were investigated using two-factor ANOVA.Results Due to the existence of core filaments,the mechanical properties of the air-jet vortex spun core-spun yarns are significantly improved than that of staple yarns(Tab.3).The ANOVA results showed that the type of core filaments were the main factor affecting the performance of core-spun yarns and had a significant effect on breaking strength,elongation and hairiness H value;In the considered range,the delivery speed only had a significant effect on the yarn hairiness H value,but had no significant effect on the yarn strength,elongation and evenness.The interaction of filament types and delivery speed had a significant effect on the breaking strength of core-spun yarns(Tab.4-7).At any delivery speed,the core-spun yarns containing DTY filaments had the highest breaking strength.Although the strength of PBT filament was second only to DTY filament(Tab.1),the breaking strength of PBT core-spun yarn was the lowest among the three core-spun yarns.The reason is that the excessive difference in elongation at break between filaments and staple fibers.And the breaking strength of PBT core-spun yarn increased with the increase of delivery speed(Fig.2).At lower spinning speeds,the increased twist of the staple fibers leads to a decrease in their stretchable distance along the yarn axis,which further exacerbates the different simultaneity of filament and staple fiber breakage,with multiple breakage peaks appearing on the stretch curve(Fig.3).The elongation at break of PBT core-spun yarn was the largest,followed by DTY and FDY core-spun yarn(Fig.4).Core-spun yarns with elastic filaments are more easier to adapt to the change in the core-sheath structure and adjust in time during stretching,resulting in higher elongation at break.The evenness CV value of the PBT core-spun yarns were most affected by the delivery speed,while the FDY core-spun yarns were less affected by the delivery speed.This because elastic filaments are more easily deformed in the spinning process.The low delivery speeds contribute to short fiber twisting and improve the yarn evenness.However,for PBT or DTY core-spun yarns,low delivery speeds also increase the probability of deformation of elastic filaments,and bring the risk of yarn evenness deterioration.In order to obtain a better yarn evenness,PBT or DTY core-spun yarns should processed at 380 m/min(Fig.5).The three types of core-spun yarns were not very different in terms of hairiness H value,and hairiness H value increased with increasing delivery speed(Fig.6).Because the twisting and wrapping effect of the airflow on the free end of the fiber is weakened during high-speed spinning,the amount of fluffy hairiness of the yarn increases.Conclusion The tenacity and elongation of air-jet vortex core-spun yarns are obviously affected by the mechanical properties of the core filament.In order to obtain high strength yarns,DTY filament with good strength can be selected as the core,and PBT filament with good elasticity can be selected to improve the elongation at break.However,due to the large difference in the elongation at break between PBT filament and viscose staple fiber,the yarn breaking strength is low when there is a difference in breakage between the sheath and core fibers.Therefore,the breaking strength of PBT core-spun yarn can be enhanced by increasing the delivery speed to improve the simultaneity of fibers breakage.The effect of delivery speed on yarn evenness is also related to the elasticity of the core filament,the lower the speed,the more intense the filament is affected by the high-speed rotating airflow,and the greater the deformation of the elastic filament,resulting in a more negative impact on the core-spun yarn evenness.But for FDY core-spun yarn,the effect of high-speed rotating airflow on staple fiber wrapping is more prominent,so low speed helps to reduce the yarn′s evenness CV value.In addition,the lower delivery speed allows the staple fibers to be fully twisted,constraining the yarn body to become tighter,and also helps to improve yarn hairiness.