Numerical Study on Forming Process of the PET/PA6 Component Melt in Micro Hole in Composite Spinning  

出　　处：《Journal of Donghua University(English Edition)》2013年第6期510-513,共4页东华大学学报（英文版）

基　　金：Innovation Program of Shanghai Municipal Education Commission,China(No.12ZZ066);the Research Fund for the Doctoral Program of Higher Education of China(No.20100075120011);the Fundamental Research Funds for the Central Universities,China;the Innovation Team Development Plan of Ministry of Education,China

摘　　要：The forming mechanism of the multi-component polymer melt is always the difficult problem in the study on the composite fiber, due to the difference of the material properties. The study simulated the flow of PET/PA6 composite melt on the influence law for the velocity distribution and the micro hole＇s structure on the influence law for extrusion swelling based on the theory of the rheology and the spinning process and the structure of the spinning components by Polyflow. In addition by comparison with the previous experiments about extrusion swelling, the results show that the value of the swell ratio decreases rapidly at low values of length/ diameter and then levels off as length/diameter is increased further, whereas increases with the die exit angle increasing. The veincity distribution of the composite melt and the micro hole＇s structure have a significant influence on the extrusion swelling, which has very good guidance function for studying the forming mechanism of the composite melt and preparation of the high performance fiber.The forming mechanism of the multi-component polymer melt is always the difficult problem in the study on the composite fiber,due to the difference of the material properties.The study simulated the flow of PET/PA6 composite melt on the influence law for the velocity distribution and the micro hole's structure on the influence law for extrusion swelling based on the theory of the rheology and the spinning process and the structure of the spinning components by Polyflow.In addition by comparison with the previous experiments about extrusion swelling,the results show that the value of the swell ratio decreases rapidly at low values of length/diameter and then levels off as length/diameter is increased further,whereas increases with the die exit angle increasing.The velocity distribution of the composite melt and the micro hole's structure have a significant influence on the extrusion swelling,which has very good guidance function for studying the forming mechanism of the composite melt and preparation of the high performance fiber.

关 键 词：multi-component melt velocity equation numerical simulation ： PolwTow 

分 类 号：TQ342.9[化学工程—化纤工业] TQ320.663