Journal of Industrial Textiles ( IF 3.2 ) Pub Date : 2021-04-24 , DOI: 10.1177/15280837211011776 Guangwu Sun 1 , Yu Chen 1 , Yanwen Ruan 1 , Guanzhi Li 2 , Wenfeng Hu 1 , Sanfa Xin 1
It is widely known that the pore size of a meltblown fiber assembly extensively affects the final applications of its products. We have developed a model for simulating melt-blowing production to investigate the formation mechanism of a fiber assembly. In this study, we calculated the pore size under different production conditions using the model. The predicted results reveal the relationship between the pore size and the production conditions, namely, the air jet pressure, suction pressure, die temperature, polymer flow rate, die to collector distance, and collector speed. The predicted results also verified the experimental trends reported in previous studies. High air jet pressure and die temperature tend to generate smaller pores, while a large polymer flow rate, die to collector distance, and collector movement speed contribute to the production of larger pores in the fiber assembly. In addition, the circularity was predicted in this study to describe the pore shape. The numerical investigation of virtual production is a novel method in which the expected pore size and corresponding production conditions can be easily obtained using a computer with a few keystrokes and mouse clicks.
中文翻译:
熔喷纤维组件中孔结构的建模和实验研究
众所周知,熔喷纤维组件的孔径会严重影响其产品的最终应用。我们已经开发了一个模拟熔喷生产的模型,以研究纤维组件的形成机理。在这项研究中,我们使用该模型计算了不同生产条件下的孔径。预测结果揭示了孔径与生产条件之间的关系,即空气喷射压力,吸气压力,模头温度,聚合物流速,模头到收集器的距离以及收集器速度。预测结果也验证了先前研究中报道的实验趋势。较高的空气喷射压力和模具温度往往会产生较小的孔,而较大的聚合物流速会导致模具与收集器之间的距离变大,收集器的运动速度和速度有助于在纤维组件中产生更大的孔。另外,在该研究中预测了圆度以描述孔的形状。虚拟生产的数值研究是一种新颖的方法,其中使用带有几次击键和单击鼠标的计算机就可以轻松获得预期的孔径和相应的生产条件。