Combined Sulfur and Peroxide Vulcanization of Filled and Unfilled EPDM Based Rubber Compounds

Ján Kruželák; Mária Mikolajová; Andrea Kvasničáková; Michaela Džuganová; Ivan Chodak; Ján Hronkovič; Jozef Preťo; Ivan Hudec

doi:10.20944/preprints202308.0108.v2

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preprints.org > chemistry and materials science > polymers and plastics > doi: 10.20944/preprints202308.0108.v2

Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

Combined Sulfur and Peroxide Vulcanization of Filled and Unfilled EPDM Based Rubber Compounds

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Version 1 : Received: 31 July 2023 / Approved: 1 August 2023 / Online: 2 August 2023 (08:18:20 CEST)
Version 2 : Received: 2 August 2023 / Approved: 3 August 2023 / Online: 3 August 2023 (11:10:08 CEST)

A peer-reviewed article of this Preprint also exists.

Kruželák, J.; Mikolajová, M.; Kvasničáková, A.; Džuganová, M.; Chodák, I.; Hronkovič, J.; Preťo, J.; Hudec, I. Combined Sulfur and Peroxide Vulcanization of Filled and Unfilled EPDM-Based Rubber Compounds. Materials 2023, 16, 5596. Kruželák, J.; Mikolajová, M.; Kvasničáková, A.; Džuganová, M.; Chodák, I.; Hronkovič, J.; Preťo, J.; Hudec, I. Combined Sulfur and Peroxide Vulcanization of Filled and Unfilled EPDM-Based Rubber Compounds. Materials 2023, 16, 5596.

Abstract

Sulfur, peroxide and combined sulfur and peroxide curing systems were applied for cross-linking of unfilled and carbon black filled rubber compounds based on ethylene-propylene-diene-monomer rubber. The results revealed that the type of curing system influenced the course and shape of curing isotherms. This resulted in the change of curing kinetics of rubber compounds. The cross-link density of vulcanizates cured with combined vulcanization systems was lower than that for vulcanizates cured only in the presence of sulfur or peroxide system. The results revealed good correlation between the cross-link density as well as the structure of the formed cross-links and physical-mechanical characteristics of the materials. It can be stated that by proper combination of vulcanization systems it is possible to modify tensile behavior of vulcanizates in targeted manner. On the other side, dynamical-mechanical properties were found not be significantly influenced by the composition of curing system.

Keywords

rubber; sulfur vulcanization; peroxide vulcanization; cross-linking; physical-mechanical characteristics; dynamic-mechanical analysis

Subject

Chemistry and Materials Science, Polymers and Plastics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Comments (1)

Comment 1

Received: 3 August 2023
Commenter: Jan Kruzelak
Commenter's Conflict of Interests: Author

Comment: Dear editors,
suggested corrections were done.
Best regards Jan

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