Fundamental Theory of Polymer Processing

Abstract

The theory of polymer processing is essentially a part of solid state mechanics. It basically consists of the theoretical and experimental investigation of motion and different physical-chemical processes in deformable viscoelastic systems. With this approach we could regard the great variety of known processing methods as a complex of separate problems the solution of each of which could be regarded as a particular example of the integration of a closed system of differential equations of motion under suitably specified initial and boundary conditions. This approach would enable us to examine in theoretical terms, and from a quite general viewpoint, the wide variety of phenomena which occur in processing machines including phase changes and chemical reactions.

Modeling and use of dissipative heating of rubber in a screw drier

“…Direct use of the familiar model of the flow of an anomalously viscous liquid in a screw channel with a continuous screw thread [4,5] is difficult for the flow of rubbers in the screw channel of a drier in connection with the indicated design features of the flow section. Let us examine use of a simplified model of the flow of rubber in the channel of a screw drier, which makes it possible to perform temperature calculations of the material being heated in the drier with an accuracy acceptable for practical applications.…”