Non-isothermal process of viscoelastic polymer fi lm casting
https://doi.org/10.35164/0554-2901-2019-5-6-27-29
Abstract
The steady-state non-isothermal process of viscoelastic fl at polymer fi lm casting is considered. The polymer melt is extruded through a fl at die, subjected to uniaxial stretching and at the same time air cooling, and then fi nally cooled down on a chill roll. It is assumed that the fi lm is wide enough, the distance between the extruder die and the cooling roller is minimal to such an extent that it is possible to neglect change of width of a fi lm in the course of longitudinal stretching. It is also believed that the forces of gravity, inertia and surface tension can be ignored. From a rheological standpoint, polymer melt is the viscoelastic fl uid. The upper-convective Maxwell model with temperature-dependent viscosity is used. The problem is solved by a numerical method of fi nite diff erences.
About the Author
A. V. Вaranov
Gubkin Russian State University of Oil and Gas (National Research University)
Russian Federation
Moscow
Russian Federation
Moscow
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Review
For citations:
Вaranov A.V. Non-isothermal process of viscoelastic polymer fi lm casting. Plasticheskie massy. 2019;(5-6):27-29. (In Russ.) https://doi.org/10.35164/0554-2901-2019-5-6-27-29
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