The article discusses the main aspects of the use of rubber products based on triple ethylene propylene rubbers of domestic and foreign production, filled with an anti-radiation additive based on a composition of oxides of rare earth elements, as radiation-resistant elastomeric materials. The use of elastomers in the nuclear industry makes it possible to solve many urgent problems and ensure the operation of many critical products and mechanisms, the functioning of which is not possible without the use of elastic materials. This paper presents the results of the study and comparison of the physico-mechanical and operational properties of rubbers based on various ethylene propylene rubbers of domestic and foreign production with the addition of anti-radiation additive VKR-5M for their use as radiation-resistant elastomeric materials. The basic physical, mechanical and operational characteristics of rubber mixtures and rubbers based on ethylene propylene rubbers of domestic and foreign production have been studied. The main mechanisms and properties of radiation aging of elastomers, as well as ways to increase their resistance to ionizing radiation are considered. The paper presents the results of studies of frost resistance, heat resistance, radiation and thermal radiation resistance of rubbers based on ethylene propylene rubbers, which contain an anti-radiation additive based on the composition of rare earth element oxides WRC-5M, the advantages and disadvantages of various brands of domestic and foreign ethylene propylene rubbers in various operating conditions, and conclusions are drawn about the effectiveness of the introduction of anti-radiation additives WRC-5M, which increases the radiation resistance of rubbers. Based on the analysis of the data obtained during the work, the most radiation-resistant elastomeric base for rubbers used in conditions of increased radiation exposure was determined.

1. Kornev A.E., Bukanov A.M., Sheverdyaev O.N. Technology of elastomeric materials. Moscow, NPPA "Istek", 2009. 504 p. (in Russian).

2. Steinberg E.M., Zenitova E.A. Reducing the environmental hazard of radiation exposure using polymer composite materials. Review. Bulletin of the Kazan Technological University. 2012. no. 8. pp. 67–71. (in Russian).

3. Galimzyanova R.Yu., Shakirova Yu.D., Lisanevich M.S., Khakimullin Yu.N. Influence of gamma and electron radiation during radiation sterilization on the properties of a material based on viscose fiber. Bulletin of the Kazan Technological University. 2016. vol. 19. no. 10. pp. 99–101. (in Russian).

4. Reznichenko S.V. The Big Guide of the Gum Maker Ch. 1 Rubbers and Ingredients. Moscow, LLC "Publishing Center "Techinform" MAI", 2012. 744 p. (in Russian).

5. Dick D.S., Glagolev V.A., Kotova S.V., Lyusova L.R. Rubber Technology: Formulation and Testing. St. Petersburg, Nauchnye osnovy i tekhnologii, 2010. 620 p. (in Russian).

6. Alifanov E.V., Chaikun A.M., Venediktova M.A., Naumov I.S. Features of rubber formulations based on ethylene-propylene rubbers and their application in special-purpose products (review). Aviation materials and technologies. 2015. no. 2 (35). pp. 51-55. (in Russian).

7. Vakhrusheva Ya.A., Yumashev O.B., Chaikun A.M. Modern trends in the field of frost-resistant rubbers based on polar and non-polar rubbers (review). Proceedings of VIAM. 2022. no. 8 (114). pp. 77-87. (in Russian).

8. Chaikun A.M., Yumashev O.B., Sergeev A.V. Peculiarities of formulation development of frost-resistant ozone-resistant rubber based on ethylene-propylene rubber. Proceedings of VIAM. 2022. no. 9 (115). pp. 58-67. (in Russian).

9. Yastrebinsky R.N., Samoilova Yu.M., Pavlenko V.I., Demchenko O.V. The use of highly dispersed aluminum oxide for the synthesis of radiation-resistant polymer composites. Successes of modern natural science. 2015. no. 9-3. pp. 532-535. (in Russian).

10. GOST 9.024–74 ESZKS. Rubber. Test method for resistance to thermal aging. Ministry of Oil Refining and Petrochemical Industry, 1975

11. GOST 9.701–79 ESZKS. Rubber. Test method for resistance to radiation aging. Standards Publishing, 1984.

12. Lv J., Wang H., Liu Y., Chen J. et al. Nanocomposite enhanced radiation resistant effects in polyurethane Elastomer with low fraction of polydoapmine nanoparticles. Composites Science and Technology. 2020. vol. 186. pp. 107908. doi: 10.1016/j.compscitech.2019.107908

13. Zenoni A., Bignotti F., Donzella A., Donzella G. et al. Radiation resistance of elastomeric O-rings in mixed neutron and gamma fields: Testing methodology and experimental results. Review of Scientific Instruments. 2017. vol. 88. no. 11. pp. 113304. doi: 10.1063/1.5011035

14. Kumar P., Niranjana Prabhu T., Jineesh A.G. BaSO4 and Fe2O3 filled polydimethylsiloxane elastomer nanocomposite as X-ray radiation resistant material. SasTech J. 2018. vol. 17. pp. 1.

15. Rzayeva S.A., Mammadov S.M., Garibov A.A., Akperov O.H. Physical and chemical regularities of obtaining heat resistant and radiation resistant polymer materials based on polyblend. 2014.

16. Boyarintsev A.Y., Galunov N.Z., Grinyov B.V., Krech A.V. Development features of radiation-resistant materials for composite scintillators and wavelength shifting light guides. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2019. vol. 930. pp. 180-184. doi: 10.1016/j.nima.2019.03.100

17. Awasthi P., Banerjee S.S. Fused deposition modeling of thermoplastic elastomeric materials: Challenges and opportunities. Additive Manufacturing. 2021. vol. 46. pp. 102177. doi: 10.1016/j.addma.2021.102177

18. Gao R., Sun W.H., Redshaw C. Nickel complex pre-catalysts in ethylene polymerization: new approaches to elastomeric materials. Catalysis Science & Technology. 2013. vol. 3. no. 5. pp. 1172-1179. doi: 10.1039/C3CY20691B

19. Larsen M.B., Boydston A.J. Successive mechanochemical activation and small molecule release in an elastomeric material. Journal of the American Chemical Society. 2014. vol. 136. no. 4. pp. 1276-1279. doi: 10.1021/ja411891x

20. Cardone D., Gesualdi G. Experimental evaluation of the mechanical behavior of elastomeric materials for seismic applications at different air temperatures. International Journal of Mechanical Sciences. 2012. vol. 64. no. 1. pp. 127-143. doi: 10.1016/j.ijmecsci.2012.07.008