并列型PA 6/PET复合扁平纤维挤出成形工艺的数值模拟  

Numerical simulation of extrusion-forming process of side-by-side PA 6/PET composite flat fiber

作　　者：宁宁[1] 甘佳佳[1] 冯培[1] 陈革[1] 

机构地区：[1]东华大学纺织装备教育部工程研究中心,上海201620

出　　处：《合成纤维工业》2016年第6期60-64,共5页China Synthetic Fiber Industry

摘　　要：以聚酰胺6(PA 6)和聚对苯二甲酸乙二醇酯(PET)两种聚合物为原料,利用Polyflow软件建立并列型PA 6/PET复合扁平纤维挤出成形的模型,模拟在不同流量、不同纺丝温度下纤维挤出成形的过程,分析在此过程中纤维横截面形状系数及丝条温度的变化情况。结果表明:在复合扁平纤维纺丝中,两种流体入口流量比的变化会引起共挤出界面位置和形状的变化;PA 6/PET复合扁平纤维形状系数随着PA 6∶PET流量比的增大而减小,随着总流量的增加而增大,而丝条温度降低的趋势变缓;复合扁平纤维的形状系数随着纺丝温度升高而降低。A model for simulating the extrusion-forming process of side-by-side polycaprolactam （ PA 6 ）/polyethylene tereph-thalate （ PET） composite flat fiber was established by using PA 6 and PET as raw material under different flow and spinning temperature with a Polyflow software .The change of the cross section shape coefficient and tow temperature was analyzed during the process of extrusion formation .The results showed that the variation of the flow ratio of PA 6 and PET at the inlet would result in the change of extrusion interface position and shape during composite spinning process ;the shape coefficient of PA 6/PET composite flat fiber was decreased with the increase of the flow ratio of PA 6 and PET and was increased with the increase of the total flow, but the fiber temperature was decreased more and more slowly with the increase of the total flow ;and the shape coefficient of the composite flat fiber was also decreased with the increase of spinning temperature .

关 键 词：聚己内酰胺纤维 聚对苯二甲酸乙二酯纤维 复合纺丝 扁平纤维 形状系数 数值模拟 

分 类 号：TQ342.94[化学工程—化纤工业]