Dynamics of Solid-State Extrusion of Viscoelastic Cross-Linked Polymeric Materials

被引：1

作者：

Belyaeva, N. A. ^{[1
]}

Stolin, A. M. ^{[2
]}

Stel'makh, L. S. ^{[3
]}

机构：

[1] Syktyvkar State Univ, Syktyvkar, Russia

[2] Russian Acad Sci, Inst Struct Macrokinet & Mat Sci Problems, Chernogolovka 142432, Moscow Oblast, Russia

[3] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Moscow Oblast, Russia

来源：

THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING | 2008年 / 42卷 / 05期

关键词：

Relative Mass; Generalize Maxwell Model; Intermolecular Crosslinks; Extrusion Velocity; Extrusion Head;

D O I：

10.1134/S0040579508050138

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A mathematical model for the solid-state extrusion of a compressible polymeric material is developed. The novel feature of the model is the consideration of the actual rheologic behavior of the material and crosslink formation kinetics. Two types of boundary conditions at the press plunger are considered. The system of the governing equations is solved using Lagrangian coordinates. The generalized Maxwell model is used to describe the viscoelastic behavior of the material. The results of numerical experiments discussed in the study show that an unstable material flow can be observed both for high and low extrusion velocities.

引用

页码：565 / 574

页数：10

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