聚合物微纳层叠挤出过程无机粒子混合效果的仿真分析  

Simulation analysis of mixing effect of inorganic particles in polymer microlayerstacking extrusion process

作　　者：张莉彦[1] 杜翔宇 丁玉梅[1] 杨卫民[1] 焦志伟[1] 何伟 ZHANG Liyan;DU Xiangyu;DING Yumei;YANG Weimin;JIAO Zhiwei;HE Wei(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学机电工程学院,北京100029

出　　处：《中国塑料》2024年第11期70-75,共6页China Plastics

基　　金：扭转层叠技术制备功能性锦纶纤维的研究及产业化示范(2021HZ027021)。

摘　　要：基于具有自主知识产权的扭转式微纳层叠方法,利用粒子示踪技术分析了微纳层叠单元对无机粒子的分散调控作用,并在相同流场条件下,将其与双螺杆混合进行对比。结果显示:本文中所使用的微纳层叠单元因其独特的扭转结构,流道内存在强剪切应力,在相同条件下,其平均剪切应力是双螺杆的几十倍;微纳层叠单元出口粒径在小尺寸区域占比更多,且峰值密度达0.09,较双螺杆高出0.07。所以综合各表征结果发现,本文所使用的微纳层叠单元对无机粒子有较强的分散调控能力,能够使粒子在聚合物基体中实现较好的分散混合。本文证实了微纳层叠装置对无机粒子与聚合物熔体的混合作用。Based on the torsional micro-nano stacking method with the state proprietary intellectual property rights,the dispersive regulation of inorganic particles by micro-nano stacking units was analyzed using a particle tracer technology,and it was compared with the twin-screw mixing effect under the same flow field.The results indicated that the micro-nano laminated element used in this study had a strong shear stress in the flow channel because of its unique torsional structure.Under the same conditions,the average shear stress was dozens of times as much as that of the twin-screw mixing.The outlet particle size of the micro-nano laminated unit had a larger proportion in the small size area,and its peak density was 0.09,which was 0.07 higher than that of the twin-screw mixing.Based on these characterization results,the used micro-nano stacked units exhibited a strong ability to disperse and regulate inorganic particles,resulting in better dispersion and mixing of particles in the polymer matrix.The mixing effect of inorganic particles and polymer melt by micronano lamination device was also verified.

关 键 词：聚合物 微纳层叠 仿真模拟 无机粒子 混合效果 

分 类 号：TQ315[化学工程—高聚物工业]