Converging flow inline rheometry for engineering extensional viscosity of uPVC

被引：3

作者：

Ettinger, H. J. ^{[1
]}

Pittman, J. F. T. ^{[1
]}

Sienz, J. ^{[1
]}

机构：

[1] Swansea Univ, Sch Engn, Ctr Polymer Proc Simulat & Design, Swansea SA2 8PP, W Glam, Wales

来源：

PLASTICS RUBBER AND COMPOSITES | 2009年 / 38卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

Extensional viscosity; uPVC; Entry pressure drop; Inline rheometry; Profile die design optimisation; Die flow simulation; EXTRUSION; OPTIMIZATION; CONTRACTION;

D O I：

10.1179/174328909X387739

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

An inline rheometer is described for determination of an engineering extensional viscosity using pressure drops in conical converging flow under fixed extruder processing conditions. A 'temperature cross' with 16 thermocouples is incorporated for detailed measurement of the temperature of melt passing to the rheometer. Temperature variations are taken into account in extracting extensional viscosity values using a modified version of the analysis by Binding. Results are reported for a profile grade uPVC. The applicability of the Binding analysis in this case is examined and confirmed. Results compare well with published data for profile grade uPVC, taking into account differences in formulation.

引用

页码：27 / 32

页数：6

共 12 条

[11] Development of extensional viscosity measurement method on low viscos polymer solution with an abrupt contraction flow [J].

1600, Japan Society of Mechanical Engineers (79) :1264-1268

[12] Extensional viscosity in uniaxial extension and contraction flow-Comparison of experimental methods and application of the molecular stress function model [J].

Aho, Johanna ;

Rolon-Garrido, Victor H. ;

Syrjala, Seppo ;

Wagner, Manfred H. .

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, 2010, 165 (5-6) :212-218

← 1 2 →