Mikulionok I.O.

Wall Boundary Layer’s Viscosity Definition in the Forming Equipment Channels for Polymers Processing

The research objective is definition of the processed polymeric material melt properties in a wall boundary layer of working equipment channels. Setting the slip coefficient, that provides a linear relation between the viscosity in the boundary layer and the slip coefficient which often don't correspond to reality is a standard procedure in one of the most common polymer melts flow numerical simulation software package Ansys Fluent.

The Cooling Process of the Polymeric Film on the Drum Partially Submerged in the Water Bath

In this paper, we develop the design procedure of the polymeric film cooling on the cooled drum partially submerged in a water bath. The process specificity of the process lies in the fact that after the films removal from a drum its surface hasn’t time to cool down to its initial temperature. We propose the mathematical model of cooling which allows calculating the film temperature field and the drum shell ring on their thickness depending on the angular coordinates cylindrical.

Definition of Mixing Time for the Closed Type Mixer with Oval Rotors

This paper deals with the design procedure of mixing time of polymer or rubber mixtures taking into account its movement not only in circular, but also in an axial direction of a mixing chamber. The preliminary comparison of theoretical and experimental data shows the possibility of implementing the developed technique.

Application of pervaporation technique to the production of mixed fuel

The paper presents the flow charts, design of the membrane apparatus and provide recommendations for the industrial application of pervaporation to the production of mixed fuel, in particular to obtaining light petroleum fractions and anhydrous ethanol

The modeling research of thermoplastic materials processing using secondary raw material

This study provides important insights into the processing of secondary filled thermoplastic materials into sheet materials on the extrusion-roll equipment. The experimental results of the measurements of power and power force parameters of production, calibration and cooling of the sheet materials conform to the theoretical data gained. In this paper, we also give some recommendations on how to carry out the process of production of cellulose secondary polyolefines.

On determining the drive power of the internal mixer with oval rotors for producing plastic and rubber mixes

We develop the calculation procedure of drive power of the mixer taking into account the movement of processed material in a circular, as well as in an axial direction of the mixing chamber. We show that the power consumed for axial movement of the processed material usually does not exceed 15 % of the power consumed for its movement in a circular direction. We also compare theoretical and experimental data in order to conclude that the developed procedure is adequate to the results of operation of industrial equipment.

Calculation techniques of plastic and rubber mills continuous action

In this paper, we describe the technique of parametrical and thermal calculation of the mills continuous action for processing materials based on high-molecular substances. The technique can be applied for the analysis of continuous milling of power-law liquid under the condition of any friction in the inter-roll gap, as well as for deposition of the processed material on the front (slow-speed) and back (high-speed) rolls.

Cascade disc–gear-type extruder for processing polymeric materials

We consider the research of the cascade extruder with a disk melter-gomogenizer and a melt supercharger in the form of the gear-type pump. We also present our research results of processing high pressure polythene of grade 15803-020 in the form of nomogram aimed at determining the extruder’s operating mode.

Research of strands Cooling Process during granulation of thermoplastics

We study the cooling process obtained on the extrusion unit of polymeric strands. We also compare the obtained results with the results of numerical modeling. The comparison of experimental and calculation data shows their satisfactory convergence that confirms adequacy of the developed mathematical model of the strands cooling process during granulation of thermoplastics to the real process.

Hydrodynamics and heat exchange in channels of the “gear wheel” mixing element of one-screw extruder

We propose the design procedure of parameters of polymers processing on a screw site with mixing elements of “gear wheel” type, widely applied at extrusion of foamed polymers. Specifically, our research results can be used for analyzing the extrusion of various foamed polymers and their compositions.