Numerical studies of the polymer melt flow in the extruder screw channel and the forming tool

Winter School on Continuous Media Mechanics

Ershov, S.V.^1 ; Trufanova, N.M.^1

Perm National Research Polytechnic University, Komsomolsky ave. 29, Perm

614990, Russia^1

关键词: Comparative analysis;    Forming tools;    Heat and mass transfer process;    Materials processing;    Polymer composition;    Polymer melt flow;    Rheological models;    Technological regime;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/208/1/012018/pdf
DOI  :  10.1088/1757-899X/208/1/012018

来源: IOP

【 摘 要 】

To date, polymer compositions based on polyethylene or PVC is widely used as insulating materials. These materials processing conjugate with a number of problems during selection of the rational extrusion regimes. To minimize the time and cost when determining the technological regime uses mathematical modeling techniques. The paper discusses heat and mass transfer processes in the extruder screw channel, output adapter and the cable head. During the study were determined coefficients for three rheological models based on obtained viscosity vs. shear rate experimental data. Also a comparative analysis of this viscosimetric laws application possibility for studying polymer melt flow during its processing on the extrusion equipment was held. As a result of numerical study the temperature, viscosity and shear rate fields in the extruder screw channel and forming tool were obtained.