不同螺杆接触状态下异向双螺杆挤出机的流道分布规律  

Study on flow channel distribution of different twin screw extruder under different screw contact state

作　　者：商嘉玮 张丽梅 黄志刚[1,2] 张一惟 李贺 SHANG Jia-wei;ZHANG Li-mei;HUANG Zhi-gang;ZHANG Yi-wei;LI He(School of Artificial Intelligence,Beijing Technology and Business University,Beijing 100048,China;Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Eualuation 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》2022年第5期61-64,共4页Food and Machinery

基　　金：国家自然科学基金面上项目(编号:32172277);北京市教委科研计划项目(编号:KM201910011002);北京市自然科学基金—市教委联合资助项目(编号:KZ201810011017)。

摘　　要：目的:探索聚乳酸在异向双螺杆挤出机不同螺杆接触状态下的流道分布规律。方法:用Solidworks软件建立啮合螺杆、部分啮合螺杆和非啮合螺杆3种几何模型;运用POLYFLOW流体仿真软件进行数值模拟;对3种螺杆不同接触状态下聚乳酸流体的压力场、剪切速率场与黏度场进行对比研究。结果:部分啮合状态下的异向双螺杆挤出机对聚乳酸有较好的建压能力与分散混合能力。结论:聚乳酸在部分啮合状态下的挤出效果优于其他2种螺杆接触状态。Objective:In order to explore the distribution law of the flow channel of polylactic acid in different screw contact states of the counter-rotating twin-screw extruder.Methods:Partially meshing screw and non-meshing screw were established by Solidworks software.Numerical sim-ulation was carried out using POLYFLOW fluid simulation software.The pressure field,shear rate field and viscosity field of polylactic acid fluid under different contact states of three screws were compared.Results:The counter-rotating twin-screw extruder in the partially meshed state has better pressure-building ability and dispersing and mixing ability for polylactic acid.Conclusion:The extrusion effect of polylactic acid in the partially meshed state is better than the other two screw contact states.

关 键 词：啮合异向双螺杆挤出机 聚乳酸 数值模拟 等温 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业]