Effect of foaming agent on the mechanical properties of sulfur and peroxide cured Ethylene Propylene Diene Monomer rubbers

H.H. Hassan, A.H. Al-Dardir, J.A. Khaliel, H.S. Ayoub, S.A. Khairy, E.M. Abdel Barya, and Y.H. Elbashar

Abstract


EPDM rubbers loaded with different concentration of azodicarbonamide as a foaming agent using two different cross-linking systems were subjected to the mechanical, compression and swelling tests at room temperature (300°K). Samples vulcanized by peroxide reveal more advantage over that vulcanized by sulfur especially for the amount of specific gravity and the compression test. The tensile test shows a noticeable increase in the true stress and strain at break for the sulfur cross-linking system than the peroxide one. For the swelling test, the empirical equation used by Kumnuantip and Sombatsompop shows the best fitting for the degree of swelling – time data.


Keywords


EBDM Foam, mechanical properties, peroxide and sulfur vulcanizates, tensile resistance, Abrasion and swelling test

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DOI: https://doi.org/10.31349/RevMexFis.65.351

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Revista Mexicana de Física

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