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借助于计算流体动力学模拟和粒子图像测速系统,开创了化学纤维湿纺加工的水洗新概念,即通过喷嘴形成扇形纤维束。分析了常规水洗的概念,找出常规水洗时紧密的纤维束中溶剂质量转移受到抑制这一主要缺陷。为克服这一缺陷,开发了一种将纤维束扇形展开并减小纤维与纤维间接触面的方法。在实验室规模的试验中,对新概念进行了评估。下一步需在工业规模上验证这一湿法纺丝水洗新概念,更进一步的研究在于箱式结构的改进。
With computational fluid dynamics simulations and particle image velocimetry systems, a new concept of water washing of chemical fiber wet spinning was pioneered by forming fan-shaped fiber bundles through nozzles. The concept of conventional water washing was analyzed to find the major drawback of inhibiting the mass transfer of the solvent in a tight fiber bundle during conventional water washing. To overcome this drawback, a method of fanning the fiber bundle and reducing the contact surface between the fiber and the fiber was developed. In a lab-scale trial, a new concept was evaluated. The next step in the industrial scale to verify the new concept of wet spinning, washing, further study is the improvement of box structure.