Simulation of Hollow Fibers in Melt-spinning Process
A numerical analysis program for melt-spinning of hollow fibers was developed. Change in cross- sectional shape along the spin line was incorporated adopting a formulation in which energy dissipation by viscous flow in the plane perpendicular to the fiber axis. Quench air conditions within a bundle differ for different rows of filaments. This, in turn, affects the spun fiber properties, especially the hollowness and variation. The influence of processing parameters on the hollowness was discussed and verified. The results show the hollowness of fiber increases accompanying by intensification of cooling conditions, increase of intrinsic viscosity and spinning velocity and decrease of spinning temperature; Diverse vitrification distances due to different quench air conditions exert a strong impact on the hollowness and coefficient of variation of hollowness. Hence, controlling the cooling condition plays a vital role in producing high-quality products.
Melt-Spinning Simulation Hollowness
ZHANG Chuanxiong WANG Chaosheng WANG Huaping
State Key Laboratory of Modification of Fiber and Polymer Materials, Donghua University, Shanghai 201620, P. R. China
国际会议
上海
英文
84-86
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）