USE OF RUBBER CRAWS AS A FILLER FOR THERMOPLASTES (OVERVIEW)

UDC 678.074.678.762.2

  • Dolinskaya Raisa Moiseevna – PhD (Chemistry), Associate Professor, Assistente Professor, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: raisa_dolinskaya@mail.ru

  • Prokopchuk Nikolay Romanovich – DSc (Chemistry), Corresponding Member of the National Academy of Sciences of Belarus, Professor, Professor, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail:nrprok@gmail.ru

DOI: https://doi.org/10.52065/2520-2669-2022-253-1-37-47

Key words: filler, crumb rubber, thermoplastic, boundary layer.

For citation: Dolinskaya R. M., Prokopchuk N. R. Use of rubber craws as a filler for thermoplastes (overview). Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2022, no. 1 (253), pp. 37–47 (In Russian). DOI: https://doi.org/10.52065/2520-2669-2022-253-1-37-47.

Abstract

One of the main goals of using fillers is to reduce the cost of polymeric materials. It is this goal that decisively determines the great interest in fillers and filled systems that has been shown in recent years.

Filled polymers are colloidal dispersed systems. The properties of these systems are determined by the nature of the filler, the polymer matrix, and also by the processes of interaction at the polymer-filler interface.

The purpose of this work is to analyze the properties of rubber industry waste and study the possibility of their use as fillers for rubber products.

The content of the dispersed phase in the polymer mixture can be from 5 to 40 wt %. When the ratio of the components in the mixture changes, the phases are reversed, i.e. the transition of the dispersed phase into a continuous one. Phase reversal can be observed both with equal ratios of the components, and with the predominance of one of them. In this case, the polymer, the content of which in the mixture is less, is also capable of forming a continuous phase. The possibility of phase reversal depends on the mixing conditions, primarily its intensity and temperature. Appeal phases is of great importance for the formation of the properties of polymer mixtures.

An unusual combination of the properties of such compositions is due to the presence of a specific two-phase structure (microgel particles of crosslinked rubber are dispersed in a thermoplastic), in which the interaction between phases occurs due to physical bonds with the formation of a developed boundary layer of variable composition.

The dimensions and structure of the boundary layer determine the technological and physical-mechanical properties of the compositions and the reproducibility of their properties during re-processing.

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