中国塑料2025，Vol.39Issue(6)：54-58,5.DOI:10.19491/j.issn.1001-9278.2025.06.011
非等温环境中异向双螺杆挤出机不同接触状态对聚乳酸流动影响的仿真
Simulation effects of different contact states of isotropic twin-screw extruder on polylactic acid melt flow under non-isothermal conditions
摘要
Abstract
This article reported an investigation on the impact of various contact conditions on the changes in channel char-acteristics during the extrusion of polylactic acid(PLA)using an opposite-direction twin-screw extruder in non-isother-mal issues.Three screw models,including complete meshing,partial meshing,and no meshing were constructed by a Solidworks® software,and corresponding numerical simulations were carried out by a Polyflow® analysis software.A comparative study was conducted on the pressure field,shear rate field,and viscosity field of the PLA fluid under differ-ent contact states of the three screw models.In the non-isothermal case,the complete meshing state exhibited high shear rates and moderate viscosity,which was consistent with the efficient extrusion of PLA.In conclusion,the extrusion ef-fect of PLA in the complete meshing state was superior to the other two screw contact states under non-isothermal condi-tions.关键词
双螺杆挤出机/异向啮合/非等温/不同接触状态Key words
twin-screw extruder/counter-rotation/non-isothermal/various contact states分类
化学工程引用本文复制引用
程媛媛,黄志刚,徐珍,孙晨昊,吴运涛..非等温环境中异向双螺杆挤出机不同接触状态对聚乳酸流动影响的仿真[J].中国塑料,2025,39(6):54-58,5.基金项目
国家自然科学基金面上项目(32172277) （32172277）
