THE EFFECT OF STABILIZING ADDITIVES ON THE OPERATIONAL PROPERTIES OF ELASTOMERIC COMPOSITIONS

UDC 678.046:547.565.2

  • Uss Elena Petrovna – PhD (Engineering), Assistant Professor, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: uss@belstu.by

  • Shashok Zhanna Stanislavovna – PhD (Engineering), Associate Professor, Assistant Professor, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: shashok@belstu.by

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

  • Krotova Olga Aleksandrovna – PhD (Engineering), Senior Lecturer, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: o.krotova@belstu.by

  • Shadyro Oleg Iosifovich – DSc (Chemistry), Professor, Head of the Laboratory of Chemistry of Free Radical Processes. Research Institute for Physical Chemical Problems of the Belarusian State University (14, Leningradskaya str., 220030, Minsk, Republic of Belarus). E-mail: shadyro@tut.by

  • Ksendzova Galina Anatolievna – PhD (Chemistry), Leading Researcher of the Laboratory of Chemistry of Free Radical Processes. Research Institute for Physical Chemical Problems of the Belarusian State University (14, Leningradskaya str., 220030, Minsk, Republic of Belarus). E-mail: ksja-bn@tut.by

DOI: https://doi.org/10.52065/2520-2669-2021-241-1-101-107

Keywords: elastomeric composition, stabilizing additive, spatially hindered diphenols, strength, heat resistance, dynamic endurance.

For citation: Uss E. P., Shashok Zh. S., Prokopchuk N. R., Krotova O. A., Shadyro O. I., Ksendzova G. A. The effect of stabilizing additives on the operational properties of elastomeric compositions. Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2021, no. 1 (241), pp. 101–107 (In Russian). DOI: https://doi.org/10.52065/2520-2669-2021-241-1-101-107.

Abstract

The effectiveness of using new derivatives of hindered pyrocatechols as antioxidants in the formulations of filled elastomeric compositions based on a combination of synthetic polyisoprene and polybutadiene rubbers was investigated. The effect of pyrocatechol derivatives on the elastic-strength properties of vulcanizates, the resistance of rubbers to thermal aging in air, as well as their resistance to crack growth under repeated bending was established. The investigated stabilizers differ in the type, number, and spatial arrangement of substituents in the benzene ring. These ingredients were introduced into rubber mixtures in dosages of 1.0 and 2.0 phr. Elastomeric compositions containing industrial stabilizer 2,6-di-tert-butyl-4-methylphenol (ionol, BHT) were used as a comparison sample. It was determined that the experienced antioxidants have a lower volatility in comparison with the most well-known and effective industrial stabilizer ionol. It was found that the nature of the change in the elastic-strength properties of elastomeric compositions containing synthesized antioxidants was determined by nature and dosage of stabilizers. It was shown that the use of new stabilizing additives in rubber mixes leads to the production of vulcanizates with increased resistance to high temperatures and crack growth during buckling.

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References

  1. Zaikov G. E. Aging and stabilization of polymers (who needs it and why? Historical aspect). Kauchuk i rezina [Kauchuk and rubber], 2008, no. 4, pp. 10–13 (In Russian).
  2. Prokopchuk N. R., Shashok Zh. S., Kasperovich A. V., Tashlykov I. S. Modifikatsiya svoystv elastomernykh kompozitsiy: monografiya [Modification of the properties of elastomeric compositions]. Minsk, BGTU Publ., 2012. 218 p.
  3. Kochnev A. M., Galibeev S. S. Modifikatsiya polimerov: monografiya [Polymer modification]. Kazan', KGTU Publ., 2008. 533 p.
  4. Piotrovskiy K. B., Tarasova Z. N. Starenie i stabilizatsiya sinteticheskikh kauchukov i vulkanizatov [Aging and stabilization of synthetic rubbers and vulcanizates]. Moscow, Khimiya Publ., 1980. 264 p.
  5. Mukhutdinov A. A., Nelyubin A. A., Il'yasov R. S., Ishchenko G. M., Zelenova V. N. Ekologicheskie aspekty modifikatsii ingredientov i tekhnologii proizvodstva shin: uchebnik [Environmental aspects of ingredient modification and tire manufacturing technology: textbook]. Kazan’, Fen Publ., 1999. 400 p.
  6. Zagoskina N. V., Burlakova E. B. Fenol'nye soedineniya: fundamental’nye i prikladnye aspekty: monografiya [Phenolic compounds: fundamental and applied aspects: monograph]. Moscow, Nauchnyy mir Publ., 2010. 399 p.
  7. Wu W., Yang S., Lai X., Li H. Thermo-oxidative aging resistance and mechanism of a macromolecular hin-dered phenol antioxidant for natural rubber. Journal of Elastomers & Plastics, 2017, vol. 50, issue 4, pp. 372–387.
  8. Zhang L., Fan X., Cai Z., Liu J. Thermal antioxidation behavior of a new hindered phenol with branched structure for nitrile rubber. International Journal of Modern Physics, 2019, vol. 33, no. 01n03. DOI: 10.1142/S0217979219400587.
  9. Maslovskaya L. A., Petrikevich D. K., Timoshchuk V. A., Shadyro O. I. Synthesis and antioxidant properties of certain derivatives of alkylated pyrocatechol. Zhurnal obshchey khimii [Journal of General Chemistry], 1996, vol. 66, no. 11, pp. 1893–1898 (In Russian).
  10. Shadyro O. I., Edimecheva I. P., Glushonok G. K., Ostrovskaya N. I., Polozov G. I., Murase H., Kagiya T. Effects of phenolic compounds on reactions involving various organic radicals. Free Rad. Res., 2003, vol. 37, pp. 1087–1097.
  11. Ksendzova G. A., Ostrovskaya N. I., Semenkova G. N., Sorokin V. L., Shishkanova P. A., Shadyro O. I. Synthesis of 3,5-di-tert-butyl-1,2-dihydroxybenzene derivatives and their effect on free radical oxidation of hexane and oxygen activation ability of neutrophiles. Russian Journal of General Chemistry, 2019, vol. 89, no. 3, pp. 391–398.
  12. Muhutdinov A. A., Muhutdinov Je. A., Sol'yashinova O. A., Karimova L. H. Osnovy ekologizatsii protsessov primeneniya fenol- i aminsoderzhashhikh ingibitorov stareniya shinnykh rezin: monografiya [Fundamentals of greening the processes of using phenol- and amine-containing inhibitors of tire rubber aging: monograrh]. Kazan’, KNITU Publ., 2012. 116 p.
  13. Fedyukin D. L., Makhlis F. A. Tekhnicheskie i tekhnologicheskie svoystva rezin [Technical and technological properties of rubbers]. Moscow, Khimiya Publ., 1985. 240 p.
  14. Bergshteyn L. A. Laboratornyy praktikum po tehnologii reziny [Laboratory workshop on rubber technology]. Leningrad, Khimiya Publ., 1989. 248 p.
  15. Zhovner N. A., Chirkova N. V., Khlebov G. A. Struktura i svoystva materialov na osnove elastomerov [Structure and properties of materials based on elastomers]. Omsk, Filial RosZITLP Publ., 2003. 276 p.
  16. Kornev A. E., Bukanov A. M., Sheverdyaev O. N. Tekhnologiya elastomernykh materialov: ucheb. dlya vuzov [Elastomeric material technology: textbook]. Moscow, Istek Publ., 2009. 502 p.
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