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

• H.H. Hassan ^[1] ; A.H. Al-Dardir ^[1] ; J.A. Khaliel ^[2] ; H.S. Ayoub ^[1] ; S.A. Khairy ^[1] ; E.M. Abdel Barya ^[3] ; Y.H. Elbashar ^[4]
  1. [1] Cairo University

     Cairo University

     Egipto

     
  2. [2] Misurata University

     Misurata University

     Libia

     
  3. [3] Mansoura University

     Mansoura University

     Egipto

     
  4. [4] Matrouh University, Matrouh, Egypt

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• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 65, Nº. 4, 2019, págs. 351-354
• Idioma: inglés
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• Resumen

  • 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.