CARBON-SILICON FILLER FOR ELASTOMER COMPOSITIONS

UDC 678.046.3

  • Bobrova Valeria Vladimirovna – PhD student, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: lerik_bobrik94@mail.ru

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

  • Efremov Sergey Anatolyevich – Academician of Kazakhstan National Academy of Natural Sciences, DSc (Chemistry), Professor, Deputy Director of the Center for Physico-Chemical Methods of Research and Analysis. Al-Farabi Kazakh National University (71, Al-Farabi Ave., 050040, Almaty, Republic of Kazakhstan). E-mail: efremsa@mail.ru

  • Necipurenko Sergey Vitalievich – PhD (Engineering), Associate Professor, Leading Researcher, Head of the Laboratories of Composite Materials of the Center of Physico-Chemical Methods of Research and Analysis. Al-Farabi Kazakh National University (71, Al-Farabi Ave., 050040, Almaty, Republic of Kazakhstan). E-mail: nechipurenkos@mail.ru

DOI: https://doi.org/10.52065/2520-2669-2022-253-1-89-95

Key words: rice husk, mechanical activation, carbon, silicon dioxide, activity.

For citation: Bobrova V. V., Prokopchuk N. R., Efremov S. A., Nechipurenko S. V. Сarbon-silicon filler for elastomer compositions. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2022, no. 1 (253), pp. 89–95 (In Russian).DOI: https://doi.org/10.52065/2520-2669-2022-253-1-89-95.

Abstract

The development of polymer composite materials using various environmentally friendly fillers is an area of active research. The main purpose of this work is to study the structure and chemical composition of a carbon-silicon composite (CSC) obtained by carbonization of a mixture of rice husks and a rice stalk in a pyrolysis furnace, without oxygen, at a temperature of 550–600°C, before and after mechanical activation. The chemical composition of CSC was determined by X-ray phase analysis. It has been established that the composite consists of carbon 35.0–60.0 ± 2.0%, silicon dioxide 30.0– 50.0 ± 2.0%, and impurities of metal oxides of various nature. It has been established that CSC contains an amorphous fraction of silicon oxide. The main physicochemical characteristics of the carbon-silicon composite have been studied. The structure of the composite was studied by scanning electron microscopy. It has been established that the structure of the CSC is mainly aggregates with an average particle size of 50.9 μm, consisting of layered formations with a developed internal system of pores. The surface area of the composite was determined by the method of multipoint adsorption of nitrogen gases according to the BET method, which is 36 m2 /g. The mechanical activation of the CSC was carried out by grinding in a vibratory and planetary mill at different times. It has been established that the duration of mechanical activation of the carbon-silicon composite contributes to an increase in the specific surface area of the composite.

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25.11.2021