熔纺中空纤维皮芯结构的动力学模拟──冷却条件对皮芯差异的影响  

The Dynamic Simulation of Skin-Core Texture Formation of Melt Spinning Hollow Fibre-The Influence of Cooling on the Skin-Core Texture

作　　者：王华平[1] 余晓蔚[1] 韩淑丽 

机构地区：[1]中国纺织大学化纤工程研究中心

出　　处：《纺织学报》1999年第3期143-146,共4页Journal of Textile Research

摘　　要：本文基于纺丝动力学模拟模型及理论，在讨论了卷绕速度、泵供量、熔体温度、切片粘度对速度梯度、皮芯温差的影响的基础上，更详尽地讨论了冷却条件对温度、速度、张力三场及速度梯度、皮芯温差的影响。结果表明：吹风条件的改变，即吹风速度的提高（从 ２ｍ／ｓ到 ５ｍ／ｓ），吹风长度的增加（从８ｃｍ到２０ｃｍ），吹风起点的上移（从２ｃｍ到８ｃｍ）都能加速成形，其中以吹风速度、吹风起点的影响最为明显。另外，吹风速度，吹风起点对皮芯温差影响也较大。The paper is based on the dynamic simulation model and theories of melt spinning. Beginning with the influences of take-up velocity,mass throughout,melt temperature,and intrinsic viscosity on the distributions of velocity gradient and the skin-core temperature difference,we discussed the effect of cooling conditions on the distribution of temperature,velocity,force velocity gradient and the skin-core temperature difference. The results show that the change of blowing conditioms (increasing blowing velocity from 2m/s to 5m/s,blowing length from 8cm to 20cm, and moving blowing starting point from 2cm to 8cm)can accelerate the formation of spinning,especially the blowing Velocity and the blowing starting point. Obviously, the blowing velocity and starting point will also affect the skin-core temperature difference.

关 键 词：中空纤维 皮芯结构 熔融纺丝 纺丝 冷却条件 

分 类 号：TQ340.642[化学工程—化纤工业]