聚合物熔体跨尺度挤出过程的黏弹性流变特性

doi:10.3969/j.issn.1004-132X.2021.12.014

中国机械工程 ›› 2021, Vol. 32 ›› Issue (12): 1494-1503.DOI: 10.3969/j.issn.1004-132X.2021.12.014

聚合物熔体跨尺度挤出过程的黏弹性流变特性

刘奎;王敏杰;赵丹阳;李红霞

大连理工大学机械工程学院，大连，116024

出版日期:2021-06-25 发布日期:2021-07-08
通讯作者: 王敏杰（通信作者），男，1958 年生，教授、博士研究生导师。研究方向为模具技术、高分子材料成形技术、切削加工技术。E-mail:mjwang@dlut.edu.cn。
作者简介:刘奎，男，1993年生，博士研究生。研究方向为微成形理论及高分子材料微挤出成形技术、模具技术。发表论文7篇。E-mail:2280709149@qq.com。
基金资助:
国家自然科学基金（51675079）

Viscoelastic Rheological Properties of Polymer Melts in Cross-scale Extrusion Processes#br#

LIU Kui;WANG Minjie;ZHAO Danyang;LI Hongxia

School of Mechanical Engineering,Dalian University of Technology,Dalian,Liaoning,116024

Online:2021-06-25 Published:2021-07-08

摘要/Abstract

摘要： 在聚合物熔体微尺度动态黏弹特性实验的基础上，基于分子理论建立了跨尺度挤出过程中的熔体黏弹特性微尺度效应流变模型。流变模型反映了流道特征对黏弹性流动过程应力状态的影响。微尺度效应弱化了熔体的黏弹性流变响应，促进了分子链松弛。模型的微尺度效应通过储能模量和耗能模量的微尺度效应系数及二者的比值表征。微尺度效应系数越小，特征尺度对黏弹特性的影响越显著；黏弹性微尺度效应系数比值越小，特征尺度对松弛过程的影响越明显。

关键词: 聚合物熔体, 黏弹性, 跨尺度挤出, 微尺度效应系数, 流变模型

Abstract: A molecular theory-based rheological model was established to describe micro-scale effect on viscoelastic rheological properties through dynamic viscoelastic property measurements under micro-scale conditions. The model might reflect influences of characteristic channels on the stress state of viscoelastic flow processes. The existence of micro-scale effect weakened viscoelastic rheological response of polymer melts and promoted relaxation processes of molecular chains. The micro-scale effect included in the rheological model was characterized by coefficient sizes of micro-scale effect and ratio of storage modulus and loss modulus. A smaller value of the coefficient for the micro-scale effect indicates a more remarkable effect of the characteristic scale on the viscoelastic properties. Smaller ratio of coefficients for viscoelastic micro-scale effect shows an apparent influence of characteristic scale on the relaxation processes.

Key words: polymer melt, viscoelasticity, cross-scale extrusion, coefficient of micro-scale effect, rheological model

中图分类号:

TG76
TQ320

刘奎, 王敏杰, 赵丹阳, 李红霞. 聚合物熔体跨尺度挤出过程的黏弹性流变特性[J]. 中国机械工程, 2021, 32(12): 1494-1503.

LIU Kui, WANG Minjie, ZHAO Danyang, LI Hongxia. Viscoelastic Rheological Properties of Polymer Melts in Cross-scale Extrusion Processes#br#[J]. China Mechanical Engineering, 2021, 32(12): 1494-1503.

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http://www.cmemo.org.cn/CN/Y2021/V32/I12/1494

参考文献

［1］JIN Guobao, WANG Minjie, ZHAO Danyang, et al. Design and Experiments of Extrusion Die for Polypropylene Five-lumen Micro Tube［J］. Journal of Materials Processing Technology,2014,214(1):50-59.
［2］TIAN Huiqing, ZHAO Danyang, WANG Minjie, et al. Effect of Die Lip Geometry on Polymer Extrudate Deformation in Complex Small Profile Extrusion［J］. Journal of Manufacturing Science and Engineering, 2017,139(6):061005.
［3］MITSOULIS E, LUGER H J, MIETHLINGER J, et al. Flow Behavior of a Polypropylene Melt in Capillary Dies［J］. International Polymer Processing, 2018, 33(5):642-651.
［4］MU Yue, ZHAO Guoqun, CHEN Anbiao, et al. Modeling and Simulation of Three-dimensional Extrusion Swelling of Viscoelastic Fluids with PTT, Giesekus and FENE-P Constitutive Models［J］. International Journal for Numerical Methods in Fluids, 2013,72(8):846-863.
［5］MCLEISH T C B, LARSON R G. Molecular Constitutive Equations for a Class of Branched Polymers:The Pom-Pom Polymer［J］. Journal of Rheology, 1998, 42(1):81-110.
［6］TANNER R I. On the Congruence of Some Network and Pom-Pom Models［J］. Korea-Australia Rheology Journal, 2006,18(1):9-14.
［7］VERBEETEN W M H, PETERS G M, BAAIJENS F P T. Viscoelastic Analysis of Complex Polymer Melt Flows Using the Extended Pom-Pom Model［J］. Journal of Non-Newtonian Fluid Mechanics, 2002, 108:301-326.
［8］CLEMEUR N, DEBBAUT B. A Pragmatic Approach for Deriving Constitutive Equations Endowed with Pom-Pom Attributes［J］. Rheologica Acta,2007,46:1187-1196.
［9］WANG Xiaolin, CHEN Ruhuang, WANG Mengmeng, et al. Validation of Double Convected Pom-Pom Model with Particle Image Velocimetry Technique［J］. Polymer Engineering & Science, 2015,55(8):1897-1905.
［10］WANG Wei, WANG Xuanping, HU Changxu. A Comparative Study of Viscoelastic Planar Contraction Flow for Polymer Melts Using Molecular Constitutive Models［J］. Korea-Australia Rheology Journal. 2014, 26(4):365-375.
［11］LU Yong, JIANG Kaiyu, WANG Minjie. Study on Rheological Properties of In-mold Co-injection Self-reinforced Polymer Melt［J］. Polymer Testing, 2021,93:1-14.
［12］徐斌, 王敏杰, 于同敏, 等. 微尺度效应下的聚合物熔体粘度理论及试验［J］. 机械工程学报，2010，46(19):125-132.
XU Bin, WANG Minjie, YU Tongmin, et al. Theoretical and Experimental Approach of the Viscosity of Polymer Melt under Micro-scale Effect［J］. Journal of Mechanical Engineering, 2010, 46(19):125-132.
［13］王敏杰,田慧卿,赵丹阳. 聚合物熔体微尺度剪切黏度测量方法与黏度模型［J］. 机械工程学报, 2012, 48(16):21-29.
WANG Minjie, TIAN Huiqing, ZHAO Danyang. Micro-scale Shear Viscosity Testing Approach and Viscosity Model of Polymer Melts［J］. Journal of Mechanical Engineering, 2012, 48(16):21-29.
［14］LPEZ-LPEZ M T, RODRGUEZ-ARCO L, ZUBAREV A, et al. Effect of Gap Thickness on the Viscoelasticity of Magnetorheological Fluids［J］. Journal of Applied Physics, 2010,108(8):083503.
［15］刘奎,王敏杰,赵丹阳,等. 聚合物熔体动态黏弹特性微尺度效应实验研究［J］. 化工学报, 2020, 71(增刊1):90-97.
LIU Kui, WANG Minjie, ZHAO Danyang, et al. Experimental Research on Micro-scale Effect for Dynamic Viscoelastic Properties of Polymer Melt［J］. Journal of Chemical Industry and Engineering, 2020, 71(S1):90-97.
［16］TANG Dahang, MARCHESINI F H, DHOOGE D R, et al. Isothermal Flow of Neat Polypropylene through a Slit Die and Its Die Swell:Bridging Experiments and 3D Numerical Simulations［J］. Journal of Non-Newtonian Fluid Mechanics, 2019, 266:33-45.［17］沈新元. 高分子材料加工原理［M］. 3版. 北京：中国纺织出版社，2014.
SHEN Xinyuan. Principles of Polymer Material Processing［M］. 3rd Ed. Beijing:China Textile & Apparel Press, 2014.

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聚合物熔体跨尺度挤出过程的黏弹性流变特性

Viscoelastic Rheological Properties of Polymer Melts in Cross-scale Extrusion Processes#br#

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