Extensional viscosity for polymer melts measured in the filament stretching rheometer

被引：164

作者：

Bach, A

Rasmussen, HK

Hassager, O ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Chem Engn, Danish Polymer Ctr, DK-2800 Lyngby, Denmark

[2] Tech Univ Denmark, Dept Mfg Engn & Management, Danish Polymer Ctr, DK-2800 Lyngby, Denmark

来源：

JOURNAL OF RHEOLOGY | 2003年 / 47卷 / 02期

关键词：

D O I：

10.1122/1.1545072

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A new filament stretching rheometer has been constructed to measure the elongational viscosity of polymer melts at high temperatures. Two polymer melts, a LDPE and a LLDPE, were investigated with this rheometer. A constant elongational rate has been obtained by an iterative application of the Orr-Sridhar method for specification of the end-plate movement. Agreement has been found with linear viscoelastic measurements performed in shear. Hencky strains up to about 6 have been reached. Steady values of the viscosity have been sustained in some cases for about two Hencky strain units. (C) 2003 The Society of Rheology.

引用

页码：429 / 441

页数：13

共 24 条

[1] An interlaboratory comparison of measurements from filament-stretching rheometers using common test fluids [J].