涡流纺纱线的包缠加捻对其力学性能的影响  

Effect of wrapping and twisting on mechanical properties of air-jet vortex spun yarns

作　　者：陈美玉 刘玉琳[3] 胡革明 孙润军 CHEN Meiyu;LIU Yulin;HU Geming;SUN Runjun(School of Textile Science and Engineering, Xi′an Polytechnic University, Xi′an, Shaanxi 710048, China;Key Laboratory of Functional Textile Material and Product in Ministry of Education, Xi′an Polytechnic University, Xi′an, Shaanxi 710048, China;Shaanxi Huayan Aero-Instrument Co., Ltd., Hanzhong, Shaanxi 723102, China)

机构地区：[1]西安工程大学纺织科学与工程学院,陕西西安710048 [2]西安工程大学功能性纺织材料及制品教育部重点实验室,陕西西安710048 [3]陕西华燕航空仪表有限公司,陕西汉中723102

出　　处：《纺织学报》2021年第1期59-66,共8页Journal of Textile Research

摘　　要：为探究涡流纺纱线的包缠加捻与成纱力学性能的关系,从理论上分析了涡流纺纱线拉伸过程中的纤维形变与受力,详细研究了涡流压力和纺纱速度对涡流纺纱线力学性能的影响。结果表明:外层纤维螺旋包缠特性对涡流纺成纱的力学性能起着决定性作用,涡流压力和纺纱速度为影响涡流纺包缠和加捻效果的主要因素;当纺纱速度为280 m/min时,随着涡流压力的增加,涡流纺纱线的断裂比强度和弹性模量呈先增加后下降的变化趋势,而断裂伸长率基本不变,且当涡流压力为0.55 MPa时,涡流纺成纱力学性能最优;当涡流压力恒定为0.45 MPa时,随着涡流纺纱速度的增加,涡流纺纱线的断裂比强度、断裂伸长率均呈略微下降趋势,弹性模量呈现先下降后基本不变的趋势。In order to investigate the effect of winding and twisting on the mechanical properties of the air-jet vortex spun yarns,the deformation and force loading of the fibers in air-jet vortex spun yarn during stretching process was analyzed theoretically in this paper,and the effect of the vortex pressure and the spinning speed on the mechanical properties of the vortex spun yarn was investigated in detail.The results indicate that the spiral wrapping of the outer fibers play a decisive role in the mechanical properties of the yarn.The vortex pressure and the spinning speed are the two main factors affecting wrapping and twisting effect of the vortex spinning.When the spinning speed was fixed as 280 m/min,the breaking tenacity and the initial modulus of the yarn demonstrate an increase followed by a decrease,with the breaking elongation virtually unchanged,with the increase of the vortex pressure.When the spinning speed was fixed as 280 m/min with the vortex pressure being 0.55 MPa,the optimum mechanical properties of the yarn were obtained.When the vortex pressure was fixed as 0.45 MPa,with the increase of the spinning speed,the breaking tenacity and the breaking elongation of the yarn both show a slight decreasing trend,and the initial modulus shows a decrease and then stabilized.

关 键 词：涡流纺纱线 包缠加捻 涡流压力 纺纱速度 力学性能 

分 类 号：TS101.2[轻工技术与工程—纺织工程]