THE NUMERICAL STUDY OF EXTRUSION PROCESSES POLYMER MATERIALS UNDER VARIOUS HEAT EXCHANGE CONDITIONS ON THE SCREW
The process of flow and melting of polymer materials in the extruder screw channel taking into account the thermal conductivity of screw was considered. The multilevel algorithm of iterative procedures for joint solving tasks of heat and mass transfer of polymers under conditions of phase transition in the working channel of extrusion equipment and determination of the temperature field of screw was proposed Carried out the numerical study of the influence of heat transfer in screw on the processing of insulating polymeric mediums by extrusion by comparison of the results obtained by using in the calculations of various heat exchange conditions on the screw. Shows graphs of changes along the length of the extruder channel of the screw temperature, the cross section area of solid bed, the average temperature of polymer. The pressure-flow characteristics of extruder were built. The recommendations for use in mathematical models of various heat exchange conditions on the screw were given.