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Studies on melt spinning. II. Analysis of the deformation and heat transfer processes
Author(s) -
Lamonte Ronald R.,
Han Chang Dae
Publication year - 1972
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1972.070161220
Subject(s) - isothermal process , spinning , materials science , melt spinning , heat transfer , thermodynamics , mechanics , polyethylene , deformation (meteorology) , elongation , viscosity , adiabatic process , polystyrene , composite material , physics , polymer , ultimate tensile strength
A generalized, empirical equation is proposed which takes into account the dependence of elongational viscosity on both elongation rate and temperature. From this, a mathematical model for simulating the melt spinning process has been developed. The model has been tested against experimentally observed velocity profiles in fibers of polystyrene and high‐density polyethylene spun into an isothermal chamber. It has been found that predicted velocity profiles agree well with experimentally observed ones. The mathematical model has been used to predict velocity and temperature profiles in fibers spun into a cooling medium. The simultaneous solution of momentum and energy balance equations by means of a numerical integration scheme has generated important information such as distributions of force components involved in spinning and distributions of the total rate of heat transfer along the spinning way.