喷气纺普通聚酯纱与超细聚酯纱的结构与弯曲性能研究

对由普通与超细聚酯纤维纺成的村田喷气纺纱线的结构进行了研究和比较。用带有数码相机的光学显微镜进行纱线的结构研究。由拍摄的照片可得到很多纱线结构参数,如纱线正常区域的直径、包覆区域的直径、纱线中心处纤维的螺旋角、纱线表面纤维的螺旋角、被包覆纤维包覆的包覆区域的长度、包覆纤维包覆的区域、包覆区域纱线的弯曲刚度等。结果表明:由超细纤维纺纱制成的纱线的弯曲刚度比普通纤维的弯曲刚度低;纤维类型影响包覆摩擦因素以及纤维包覆区域;由超细纤维纺成的纱线的直径比普通纤维的小。

Structure and bending properties of air-jet spun polyester yarns and microfiber polyester yarns

The structure of Murata air spun yarns produced from ＂normal＂ fiber and microfiber polyester fiber vis-a-vis is investigated and compared. Yarn structures were studied with an optical microscope equipped with a digital camera. Based on the digitized photographs, structural parameters of yarn such as yarn diameter at normal place, yarn diameter at wrapper fiber place, helix angle made by fiber in normal core body of yarn, helix angle made on the surface, length of wrapping area covered by wrapper fibers, area covered by wrapper fibers, packing fraction and flexural rigidity were studied. The results showed that flexural rigidity of yarn spun from microfiber was lower than that of the normal fiber. The type of fiber affects packing coefficient and wrapper area. The diameter of yarn spun from microfiber was found to be lower than the yarn spun from normal fiber.