STRESS AND RECOVERY MAXIMA IN LDPE MELT ELONGATION

被引：50

作者：

RAIBLE, T

DEMARMELS, A

MEISSNER, J

机构：

[1] Department of Industrial and Engineering Chemistry, Swiss Federal Institute of Technology (ETHZ), Zürich

来源：

POLYMER BULLETIN | 1979年 / 1卷 / 06期

关键词：

D O I：

10.1007/BF00284409

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

By means of a new tensile rheometer for polymer melts, stress-strain curves σ(ε) and the elastic recovery εR(ε) of a low density polyethylene melt were measured up to total strains ε=7, i.e. stretch λ=1097, at 150°C and two strain rates, ε=0.03 and 0.1 s-1. Tensile tests up to very high strains e give relevant results only if the test performance is characterized by quality parameters which are defined and given in this paper. The test results show a maximum in a as well as in εR at about ε=5.5. Hence, in the range of ε investigated, a rheologically steady-state of flow does not exist. © 1979 Springer-Verlag.

引用

页码：397 / 402

页数：6

共 9 条

[1] ELONGATIONAL BEHAVIOR OF A LOW-DENSITY POLYETHYLENE MELT .1. STRAIN RATE AND STRESS DEPENDENCE OF VISCOSITY AND RECOVERABLE STRAIN IN STEADY-STATE - COMPARISON WITH SHEAR DATA - INFLUENCE OF INTERFACIAL-TENSION [J].