2023 №03 (03) DOI of Article
2023 №03 (05)

Technical Diagnostics and Non-Destructive Testing 2023 #03
Technical Diagnostics and Non-Destructive Testing #3, 2023, pp. 21-25

Influence of gas mixtures of hydrogen with methane on the physical and chemical structure of polyethylene pipes from PE-80

M.V. Iurzhenko1, M.O. Kovalchuk1, V.Yu. Kondratenko1, V.L. Demchenko2, K.H. Gusakova2, V.S. Verbovskyi3, G.V. Zhuk3, K.P. Kostohryz4, I.A. Gotsyk5

1E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua
2Institute of Macromolecular Chemistry of NASU. 48 Kharkiv Hwy, 02160, Kyiv, Ukraine. E-mail: dvaleriyl@ukr.net
3Gas Institute of NASU. 39 Dekhtyarivs’ka str., 03113, Kyiv, Ukraine. E-mail: company_era@ukr.net
4«Naftogasbudinformatika» Company. 5b Kudryavsky uzviz, 04053, Kyiv, Ukraine. E-mail: Kostohryz@nas.gov.ua
5«Regional Gas Company» LLC. 32/2 Knyaz Ostrozky str., 01010, Kyiv, Ukraine

The work presents the results of comprehensive structural studies of the influence of mixtures of gaseous hydrogen with natural gas in the ratios of 10 % Н2/90 % СН4 and 20 % Н2/80 % СН4 on the material of polymer pipes from PE-80, that have not been in operation before. An increase in the amount of the crystalline phase in the material under the impact of hydrogen mixtures and appearance of crystals of a new shape was revealed. An assumption was made that the change in the crystalline phase structure was provoked by the competitive effect of hydrogen and methane molecules. It is found that the influence of hydrogen mixtures on polyethylene pipe material is of a physical nature. No changes in the chemical structure of polyethylene pipe material were revealed. This work is the start of large-scale investigations, in which it is intended to study the long-term influence of hydrogen mixtures with natural gas after 12 and 24 months of hydrogenation. 8 Ref., 4 Tabl., 6 Fig.
Keywords: polyethylene, PE-80, natural gas mixtures, hydrogen mixtures, hydrogen transport

Received: 30.06.2023


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