FORCE-STRAIN RELATION OF EXTRUDED POLYETHYLENE-MELTS

被引：17

作者：

BAYER, RK ^{[1
]}

机构：

[1] UNIV MARBURG,FACHBEREICH PHYS CHEM POLYMERE,D-3550 MARBURG,FED REP GER

来源：

RHEOLOGICA ACTA | 1979年 / 18卷 / 01期

关键词：

D O I：

10.1007/BF01515685

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

An equation has been derived describing the experimental curves provided by a tensiometer on extruded melts. The quantity v0/L representing the deformation time of the melt (v0 is the extrusion rate and L is the length of the molten thread) is the physically essential parameter. Besides these factors molecular parameters of the linear viscoelastic fluid and the die swell influence the force as measured by the tensiometer. The parameters characterizing the viscoelastic fluid can be calculated from a plot FMSvs. (v0/L). Here FMS is a quantity which characterizes the behaviour of the experimental curve for high melt stretch ratios. FMS is practically independent from the die swell. © 1979 Dr. Dietrich Steinkopff Verlag.

引用

页码：25 / 32

页数：8

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