四螺杆挤出机螺杆排列方式对聚乳酸流场特性的影响  

Effects of screw arrangement in four screw extruder impact on characteristics of polylactic acid flow field

作　　者：商嘉玮 黄志刚[1,2] 张一明 杨亚楠 代祥基 SHANG Jia-wei;HUANG Zhi-gang;ZHANG Yi-ming;YANG Ya-nan;DAI Xiang-ji(School of Artificial Intelligence,Beijing Technology and Business University,Beijing 100048,China;Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Evalvation Technology,Beijing 100048,China)

机构地区：[1]北京工商大学人工智能学院,北京100048 [2]塑料卫生与安全质量评价技术北京市重点实验室,北京100048

出　　处：《食品与机械》2023年第3期72-77,共6页Food and Machinery

基　　金：国家自然科学基金面上项目(编号:32172277)。

摘　　要：目的:探究聚乳酸在四螺杆挤出机不同螺杆排列方式下的流道分布规律。方法:运用三维建模软件Solidworks分别建立一字型螺杆排列方式、四方型螺杆排列方式和环绕型螺杆排列方式下的螺杆模型与对应的流体区域模型,通过仿真软件Polyflow进行数值模拟。结果:一字型与环绕型的螺杆排列方式与四方型排列相比有更好的建压能力与分布混合能力,四方型排列对聚乳酸的输送能力较弱。结论:一字型螺杆排列方式的四螺杆挤出机对加工聚乳酸有较好的效果。Objective:The flow channel distribution of polylactic acid in four screw extruder with different screw arrangement was studied.Methods:The three-dimensional modeling software Solidworks was used to establish the screw model and the corresponding fluid region model under the arrangement of one-word screw,four-square screw and encircle screw.Numerical simulation was carried out by the simulation software Polyflow.Results:The screw arrangement of monotype and surround type had better pressure building ability and distribution mixing ability than the square arrangement,and the square arrangement had weaker transport ability of polylactic acid.Conclusion:The four-screw extruder with one-line screw arrangement has a good effect on the processing of PLA.

关 键 词：螺杆挤出机 螺杆排列方式 聚乳酸 数值模拟 等温 同向 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]