Measurement technique and data analysis of extensional viscosity for polymer melts by Sentmanat extensional rheometer (SER)

被引：57

作者：

Aho, Johanna ^{[1
,2
]}

Rolon-Garrido, Victor H. ^{[2
]}

Syrjala, Seppo ^{[1
]}

Wagner, Manfred H. ^{[2
]}

机构：

[1] Tampere Univ Technol, FIN-33101 Tampere, Finland

[2] Tech Univ Berlin, Berlin Inst Technol, Chair Polymer Engn Polymer Phys, D-10623 Berlin, Germany

来源：

RHEOLOGICA ACTA | 2010年 / 49卷 / 04期

基金：

芬兰科学院;

关键词：

SER; Sentmanat extensional rheometer; Uniaxial extension; Extensional viscosity; LDPE; MSF model; DIFFERENTIAL CONSTITUTIVE-EQUATIONS; PREDICTIVE/FITTING CAPABILITIES; MOLECULAR-STRUCTURE; POLYETHYLENE MELTS; NONLINEAR RHEOLOGY; POLYSTYRENE MELTS; MODEL; DEFORMATION; ELONGATION; FLOW;

D O I：

10.1007/s00397-010-0439-8

中图分类号：

O3 [力学];

学科分类号：

070301 [无机化学];

摘要：

Transient extensional viscosity of low-density polyethylene was measured by Sentmanat extensional rheometer in combination with MCR301 rheometer (Anton Paar) at different temperatures. Issues related to the experimental procedure, namely fixing the sample and controlling the temperature, as well as correction for true sample dimensions in calculation of extensional viscosity of polymer melts, were discussed. The molecular stress function model was used to describe the experimental data. The results were in accordance with other test methods and theoretical description when the measurements were done without using the sample fixing clamps, careful temperature control was followed, and the experimental data were corrected for sample dimensions affected by thermal expansion and pre-stretching at the beginning of the test.

引用

页码：359 / 370

页数：12

共 48 条

[1]

Determination of the elongational viscosity of polymer melts by melt spinning experiments.: A comparison with different experimental techniques [J].