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Article

Effect of Polynorbornene on Physico-Mechanical, Dynamic, and Dielectric Properties of Vulcanizates Based on Isoprene, α-Methylstyrene-Butadiene, and Nitrile-Butadiene Rubbers for Rail Fasteners Pads

by
Evgeniy N. Egorov
1,*,
Evgeniia V. Salomatina
2,
Vladislav R. Vassilyev
3,
Alexander G. Bannov
4,* and
Sergey I. Sandalov
5
1
Department of Physical Chemistry and Macromolecular Compounds, Faculty of Chemistry and Pharmacy, Chuvash State University Named after I.N. Ulyanov, 15 Moskovsky Prosp., 428015 Cheboksary, Russia
2
Department of Macromolecular Compounds and Colloidal Chemistry, Faculty of Chemistry, N.I. Lobachevsky State University of Nizhny Novgorod, 23 Gagarin Avenue, 603022 Nizhny Novgorod, Russia
3
Department of Solid State Physics, Institute of Physics, Kazan Federal University, 18 Kremlyovskaya Str., 420008 Kazan, Russia
4
Department of Chemistry and Chemical Technology, Faculty of Mechanics and Technology, Novosibirsk State Technical University, 20 K. Marx Ave., 630073 Novosibirsk, Russia
5
Cheboksary Production Association Named after V. I. Chapaev, 1 St. Socialist, 428006 Cheboksary, Russia
*
Authors to whom correspondence should be addressed.
J. Compos. Sci. 2023, 7(8), 334; https://doi.org/10.3390/jcs7080334
Submission received: 26 July 2023 / Revised: 9 August 2023 / Accepted: 14 August 2023 / Published: 16 August 2023
(This article belongs to the Section Composites Applications)

Abstract

The article studies the effect of polynorbornene (PNB) in the composition of PNB with Norman 747 LV plasticizer (RC) on the curing characteristics of the rubber compound and the physico-mechanical, dynamic, dielectric properties and the thermal behavior of vulcanizates based on a combination of isoprene, α-methylstyrene-butadiene, and nitrile-butadiene rubbers. It is shown that vulcanizates containing PNB in the composition of the RC had lower conditional tensile strength, hardness, and tear resistance compared to the vulcanizate of the base version of the rubber compound. Studies of dynamic mechanical analysis indicate that an increase in the content of RC, and hence PNB, in the rubber compound contributes to an increase in the mechanical loss factor (tanδ) and a decrease in the storage modulus of vulcanizates. It was found that vulcanized rubber, containing 24.0 parts per hundred of rubber (phr) (8.98 wt. %) PNB as part of the RC, is characterized by stable physico-mechanical, improved vibration-absorbing properties, as well as increased dielectric parameters. This rubber compound can be used as a base for rail fasteners for railroad tracks.
Keywords: rubber compound; polynorbornene; curing characteristics; crosslink density; physico-mechanical properties; dynamic mechanical analysis; dielectric properties; thermal behavior; rail fastening gaskets rubber compound; polynorbornene; curing characteristics; crosslink density; physico-mechanical properties; dynamic mechanical analysis; dielectric properties; thermal behavior; rail fastening gaskets

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MDPI and ACS Style

Egorov, E.N.; Salomatina, E.V.; Vassilyev, V.R.; Bannov, A.G.; Sandalov, S.I. Effect of Polynorbornene on Physico-Mechanical, Dynamic, and Dielectric Properties of Vulcanizates Based on Isoprene, α-Methylstyrene-Butadiene, and Nitrile-Butadiene Rubbers for Rail Fasteners Pads. J. Compos. Sci. 2023, 7, 334. https://doi.org/10.3390/jcs7080334

AMA Style

Egorov EN, Salomatina EV, Vassilyev VR, Bannov AG, Sandalov SI. Effect of Polynorbornene on Physico-Mechanical, Dynamic, and Dielectric Properties of Vulcanizates Based on Isoprene, α-Methylstyrene-Butadiene, and Nitrile-Butadiene Rubbers for Rail Fasteners Pads. Journal of Composites Science. 2023; 7(8):334. https://doi.org/10.3390/jcs7080334

Chicago/Turabian Style

Egorov, Evgeniy N., Evgeniia V. Salomatina, Vladislav R. Vassilyev, Alexander G. Bannov, and Sergey I. Sandalov. 2023. "Effect of Polynorbornene on Physico-Mechanical, Dynamic, and Dielectric Properties of Vulcanizates Based on Isoprene, α-Methylstyrene-Butadiene, and Nitrile-Butadiene Rubbers for Rail Fasteners Pads" Journal of Composites Science 7, no. 8: 334. https://doi.org/10.3390/jcs7080334

APA Style

Egorov, E. N., Salomatina, E. V., Vassilyev, V. R., Bannov, A. G., & Sandalov, S. I. (2023). Effect of Polynorbornene on Physico-Mechanical, Dynamic, and Dielectric Properties of Vulcanizates Based on Isoprene, α-Methylstyrene-Butadiene, and Nitrile-Butadiene Rubbers for Rail Fasteners Pads. Journal of Composites Science, 7(8), 334. https://doi.org/10.3390/jcs7080334

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