Flow Instabilities in Concentrated Polymer Solutions and Melts

被引：0

作者：

Moewes, M. M. ^{[1
]}

Klueppel, M. ^{[1
]}

机构：

[1] Deutsch Inst Kautschuktechnol eV, D-30519 Hannover, Germany

来源：

KGK-KAUTSCHUK GUMMI KUNSTSTOFFE | 2011年 / 64卷 / 04期

关键词：

Elastic turbulence; Flow instability; Nitrile butadiene rubber; Softener; Sebacic acid dibutyl ester; Wall slip; Entropic segregation; Natural rubber; Carbon black; Multiwall carbon nanotubes (MWCNT); DYNAMICS;

D O I：

暂无

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this work we present a summary over flow anomalies of rubber melts. These lead to limitations for the rubber producing industry for extrusion products. Effects on the surface like Shark Skin or Stick Slip make the surface unsteady. The entropic segregation of polymer and accordingly solvent create a radial solvent concentration profile corresponding to an inhomogeneous product. Instabilities like helical or even chaotic flow and accordingly melt fracture destroy the extrudate completely.

引用

页码：29 / 37

页数：9

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