|本期目录/Table of Contents|

[1]辛思成,成文凯,张先明.反向旋转微型锥形双螺杆挤出机混合性能的数值模拟[J].浙江理工大学学报,2021,45-46(自科四):527-533.
 XIN Sicheng,CHENG Wenkai,ZHANG Xianming.Numerical simulation of mixing performance in a miniature  conical counterrotating twinscrew extruder[J].Journal of Zhejiang Sci-Tech University,2021,45-46(自科四):527-533.
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反向旋转微型锥形双螺杆挤出机混合性能的数值模拟()
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浙江理工大学学报[ISSN:1673-3851/CN:33-1338/TS]

卷:
第45-46卷
期数:
2021年自科第四期
页码:
527-533
栏目:
出版日期:
2021-07-10

文章信息/Info

Title:
Numerical simulation of mixing performance in a miniature  conical counterrotating twinscrew extruder
文章编号:
1673-3851 (2021) 07-0527-07
作者:
辛思成成文凯张先明
浙江理工大学,a.纺织纤维材料与加工技术国家地方联合工程实验室; b.材料科学与工程学院,杭州 310018
Author(s):
XIN Sicheng CHENG Wenkai ZHANG Xianming
a. National Engineering Laboratory for Textile Fiber Materials and Processing Technology; b. School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
关键词:
双螺杆挤出机数值模拟粒子示踪技术混合性能
分类号:
TQ320-5
文献标志码:
A
摘要:
选取反向旋转微型锥形双螺杆挤出机为研究对象,通过三维有限元数值模拟方法(Finite element method, FEM)和网格叠加技术(Mesh superposition technique, MST)研究聚丙烯(Polypropylene, PP)的挤出流动过程,结合粒子示踪技术对挤出机的混合性能进行分析,并且考察螺杆螺距对速度分布和混合性能的影响规律。结果表明:流速和剪切速率随着轴向距离的增大而减小,在啮合区的速度大于筒壁边缘,在啮合区的剪切速率小于筒壁边缘;随着螺距增大,流体在轴向上的速度分量随之增大,最大剪切速率呈减小趋势;平均对数拉伸长度随螺距的增大而减小,时均混合效率随螺距的增大而增大。研究结果可为锥形双螺杆挤出机的优化设计提供指导。

参考文献/References:

[1] 何亮. 锥形双螺杆挤出机螺杆的优化设计[J]. 工程塑料应用, 2012, 40(4): 48-52.
[2] Lin B, Sundararaj U, Ptschke P. Melt mixing of polycarbonate with multiwalled carbon nanotubes in miniature mixers[J]. Macromolecular Materials and Engineering, 2006, 291(3): 227-238.
[3] Cui L L, Paul D R. Evaluation of amine functionalized polypropylenes as compatibilizers for polypropylene nanocomposites[J]. Polymer, 2007, 48(6): 1632-1640.
[4] 郭冰,王克俭.锥形单螺杆挤出机建压能力模型分析[J]. 中国塑料, 2013, 27(9): 85-88.
[5] 王克俭,郭冰.锥形螺杆挤出机在塑炼设备中的应用及其建压机理[J]. 塑料, 2013, 42(3): 76-78.
[6] 耿孝正. 各种双螺杆挤出机的性能及应用[J]. 中国塑料, 1995, 9(5): 66-72.
[7] Seifert S. Comparison of parallel and conical twin screw extruders from the processing point of view[J]. Plastics, Rubber and Composites, 2005, 34(3): 134-142.
[8] Yu H W, Xu B P, Wu H W, et al. A visualization of flow patterns of viscoelastic fluid partially filled in a corotating nontwin screw extruder[J]. Polymer Engineering & Science, 2019, 59(S1): 24-32.
[9] Xu B P, Liu Y, He L, et al. Numerical study of mixing dynamics inside the novel elements of a corotating nontwin screw extruder[J]. Advances in Polymer Technology, 2018, 37(7): 2478-2496.
[10] Xu B P, Yu H W, Turng L S. Distributive mixing in a corotating twin screw channel using Lagrangian particle calculations[J]. Advances in Polymer Technology, 2018, 37(6): 2215-2229.

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备注/Memo

备注/Memo:
收稿日期:2021-02-27
网络出版日期:2021-04-15
基金项目:国家自然科学基金项目(51973196);浙江省重点研发计划项目(2020C01010)
作者简介:辛思成(1995-),男,湖北武汉人,硕士研究生,主要从事聚合物加工及计算流体力学方面的研究
通信作者:张先明,E-mail:joolizxm@hotmail.com
更新日期/Last Update: 2021-09-13