EXTRUSION COMPOUNDING OF REACTOPLASTIC POLYMER MATRIX AND MOLDING OF FILLED PRODUCTS ON ITS BASIS
| Jazyk: | angličtina |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Вісник Національного технічного університету України «Київський політехнічний інститут імені Ігоря Сікорського»: Серія «Хімічна інженерія, екологія та ресурсозбереження», Vol 0, Iss 1, Pp 38-44 (2015) |
| ISSN: | 2664-1763 2617-9741 |
| Popis: | It is noted that the steps of compounding and mixing of high viscosity reactorplastic compositions during extrusion impregnation process have the dominant effect on the final properties of the resulting composites based thereon, as well as their products. A methodology for forecasting was justified and analysis of the effectiveness of implemented extrusion mixing of polymer reactoplastic composition, impregnating fibrous fillers with it and molding of molded composite products was made. An approach to the construction of a mathematical model of a multi-component mixture was given. It is noted that as the criterion for efficiency of mixing the polymers it is reasonable to take the amount of change of concentration of the dispersed material in the dispersion medium, and changes in temperature uniformity of the mixture during the passage zones of homogenization in worm channel and mixer at different sections of their working channels. The motion of the mixture and its components is investigated in the framework of continuum mechanics under a certain system of assumptions used. A constructive production of an improved design-forming working body in the form of the head in order to improve the impregnation and mixing efficiency during molding composite longitudinal elements formation by increasing the polymer composition fluidity as a result of exposure to ultrasonic was described. A research which shows the effectiveness of the extrusion impregnation during molding the products made of composite materials based on reaktoplastic compositions using ultrasonic treatment was made. It was found that a set of interrelated parameters of the ultrasonic treatment is established experimentally for each tested composition. It is established that the use of the designed structure of the head together with ultrasonic treatment leads to improvement of the condition of the obtained composite production calibration without increasing undesired degree of orientation of the polymer melt. It is noted that the results provide guidance in the formulation of improved technology of extrusion molding of profile products of reactors filled reservoirs. Keywords: extrusion; compounding; impregnation; mixing; polymer; reactoplast; filler; ultrasonic |
| Databáze: | OpenAIRE |
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