Investigation of changes in the properties of sealing rubbersunder the influence of a hydrocarbon environment and temperature conditions


A.F. Fedorova*, M.L. Davydova, N.V. Shadrinov, A.A. Borisova, A.L. Fedorov, K.P. Antoev, A.R. Haldeeva, V.V. Pavlova
DOI 10.31242/2618-9712-2022-27-2-316-326

Show more

Institute of Oil and Gas Problems SB RAS, Yakutsk, Russia
*[email protected]

Submitted 19.04.2022
Revised 12.05.2022
Accepted 17.05.2022

For citation
Fedorova A.F., Davydova M.L., Shadrinov N.V., Borisova A.A., Fedorov A.L., Antoev K.P., Haldeeva A.R., Pavlova V.V. Investigation of changes in the properties of sealing rubbers under the influence of a hydrocarbon environment and temperature conditions // Arctic and Subarctic Natural Resources. 2022, Vol. 27, No. 2. P. 316–326. (In Russ.) https://doi.org/10.31242/2618-9712-2022-27-2-316-326

Abstract. Increasing the reliability and durability of sealing devices operating in cold climates mainly depends on the quality of the sealing material. Rubbers are the most common materials for sealing devices due to their high elasticity, which manifests itself in a wide temperature range, good damping ability and other important properties. As a rule, rubber seals work in contact with working hydrocarbon media, which leads to a sharp change in their composition and properties. The aim of the work was to study the combined effect of hydrocarbon media and ambient temperatures on the properties of butadiene-nitrile rubbers. Samples of commercially available rubber 98-1 and rubber RP-5, obtained under RF patent No. 2719809, were kept in hydrocarbon media (industrial hydraulic oil grade I-20A and all-season universal semi-synthetic motor oil Gazpromneft Diesel Premium 10W-40), where the main factor was the ambient temperature. We determined their resistance to hydrocarbon environments by changing characteristic indicators. The exposure of the samples was carried out in January 2022 under the following conditions: under the constant influence of ambient temperature at the climatic test site located in Yakutsk; indoors at a temperature of 20–23 °C and with a cyclic change in temperature in order to simulate the operation of seals in the units of equipment operated in the Far North in garage storage conditions. It has been established that the greatest change in indicators occurs at indoors temperature and under conditions of cyclic temperature changes. The change is associated with intense diffusion processes when rubber comes into contact with hydrocarbon media. At low-temperature exposure, the change in properties is minimal. The RP-5 rubber showed a higher level of preservation of the main indicators compared to the mass-produced rubber 98-1.

Keywords: butadiene-nitrile rubber, climatic tests, washing out plasticizers, frost resistance of rubber

Acknowledgements. The research was carried out using shared core facilities of the Federal Research Center Yakutsk Science Centre SB RAS.


References

  1. Buznik V.M., Vasilevich N.I. Materialy’ dlya osvoeniya arkticheskix territorij vy’zovy’ i resheniya // Laboratoriya i proizvodstvo. 2020. No. 1 (11). P. 98–107.
  2. Buznik V.M., Kablov E.N. Sostoyanie i perspektivy’ arkticheskogo materialovedeniya // Vestnik Rossijskoj akademii nauk. 2017. No. 9 (87). P. 827–839.
  3. Kablov E.N., Starcev V.O. Sistemny’j analiz vliyaniya klimata na mexanicheskie svojstva polimerny’x kompozicionny’x materialov po danny’m otechestvenny’x i zarubezhny’x istochnikov (obzor) // Aviacionny’e materialy’ i texnologii. 2018. No. 2(51). P. 47–58.
  4. Kornev A.E., Bukanov A.M., Sheverdyaev O.N. Texnologiya e’lastomerny’x materialov. Uchebnik dlya vuzov. Izd. 3-e, pererab. i dop. M.: NPPA «Istek», 2009. 504 p.
  5. Shadrinov N.V., Borisova A.A., Xaldeeva A.R., Pavlova V.V., Antoev K.P., Sokolova M.D. Maslobenzostojkaya morozostojkaya rezinovaya smes’ s povy’shennoj termostojkost’yu. Patent RF 2719809, byul. No 12 ot 23.04.2020
  6. Shadrinov N.V., Borisova A.A. Thermophysical and Dynamic Properties of Nitrile Butadiene Rubber Filled with Ultra-High Molecular Weight Polyethylene // Inorganic Materials. Applied Research. 2021. Vol. 12. P. 1112– 1119. https://doi.org/10.1134/S2075113321040389
  7. Vol’fson C.I., Oxotina N.A., Nigmatullina A.I., Sabirov R.K. Issledovanie uprugo-gisterezisny’x xarakteristik dinamicheskix termoe’lastoplastov // Vestnik Kazanskogo texnologicheskogo universiteta. 2012. Vol. 15, No. 11. P. 100–101.
  8. Zaikin A.E., Bobrov G.B. Vliyanie soderzhaniya akrilonitrila v butadien-nitril’nom kauchuke na svojstva dinamicheskix termoe’lastoplastov na ego osnove // Vestnik Kazanskogo texnologicheskogo universiteta. 2014. Vol. 17, No. 16. P. 105–109.
  9. Zuev Yu.P. Razrushenie polimerov pod dejstviem agressivny’x sred. M.: Ximiya, 1972. 232 p.
  10. Rejtlinger P.A. Proniczaemost’ polimerny’x materialov. M.: Ximiya, 1974. 270 p.
  11. Fedorova A.F. Vliyanie nizkix temperatur i neftyanoj sredy’ na svojstva morozostojkix uplotnitel’ny’x rezin: diP kand. texn. nauk. Yakutsk, 2003. 169 p.
  12. Petrova N.N., Popova A.F., Fedotova E.P. Issledovanie vliyaniya nizkix temperatur i uglevodorodny’x sred na svojstva rezin na osnove propilenoksidnogo i butadiennitril’nogo kauchukov // Kauchuk i rezina. 2002. No. 3. P. 6–9.
  13. Khalaf A.I., Yehia Abbas, Ismail M.N. et al. High performance oil resistant rubber // Kaut gummi kuns rubberpoint. 2013. Vol. 66, No. 9. Р. 28–32.
  14. Zielinska M., Seyger R., Dierrkes W.K. et al. Swelling of EPDM rubbers for oil-well applications as influenced by medium composition and temperature. Part
    I. Literature and theoretical background // Elastomery. 2016. Vol. 20, No. 2. P. 6–17.
  15. Fedorova A.F., Davydova M.L., Sokolova M.D., Pavlova V.V. Influence of phenolic antioxidants on strength of butadiene-nitrile rubbers during natural exposure // Polymer Science, Series D. 2021. Vol. 14, No. 2. Р. 312–317.
  16. Reznichenko P.V., Morozov Yu.L. Bol’shoj spravochnik rezinshhika. Ch.2. Reziny’ i rezinotexnicheskie izdeliya. M.: OOO «Izdatel’skij centr «Texinform» MAI», 2012. 648 p.