Document Type : Original Article
Department of Physics, Faculty of Science, Cairo University, Giza, Egypt.
Department of Physics, Faculty of Science, Misurata University, Misurata, Libya.
Laser Photonics Research CentDr, Engineering Physics Department, Military Technical College, Cairo, Egypt.
Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt.
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.