Effect of gamma radiation on the physicomechanical characters of EPDM rubber/modified additives nanocomposites

Abstract

Ethylene propylene diene terpolymer (EPDM) rubber nanocomposites have been prepared by incorporating 10 phr of organically modified montmorillonite (OMMT) nanoclay and various percentages of fumed silica (10, 20, and 30 phr) onto EPDM rubber composite using two roll mill and crosslinked by gamma radiation. The effect of radiation dose on the mechanical properties namely tensile strength and elongation at break and the physical properties namely solubility and swelling were investigated. Thermogravimetric analysis was carried out to analyses the thermal stability of the nanocomposites. Volume resistivity of the nanocomposites was also measured. The results showed that the mechanical, volume resistivity, and thermal properties of the irradiated EPDM rubber containing OMMT were increased by adding of the fumed silica. The effect of N,N-m-phenylenedimaleimide coagent on the mentioned properties of the EPDM rubber nanocomposites was studied. The results showed that the physical, mechanical, and thermal properties of the irradiated EPDM rubber nanocomposites improved with the addition of the coagent due to the increase of the crosslinking density. The inclusion of both the 30 phr fumed silica and the coagent in the nanocomposite irradiated to 50 kGy leads to a synergistic effect. J. VINYL ADDIT.

The Contribution of BaTiO3 to the Stability Improvement of Ethylene–Propylene–Diene Rubber: Part I—Pristine Filler

“…The radiation vulcanization of EPDM [99] may provide a resistant material whose utilization in an energetic hazardous environment would be recommended [100]. The hybrid-structured EPDM compounds with barium titanate allow radiation processing as a suitable version of fabrication for many industrially applied items [101,102].…”

Effect of gamma radiation and modified CeO2 on the physicomechanical properties of silicon rubber nanocomposites

“…The surface modification cerium oxide was carried out according to a reported method [26]. In this method, heptane and 3-(aminopropyl) triethoxysilane were mixed while being stirred, and CeO2 was then added in the appropriate amount.…”

A Review of EPDM (Ethylene Propylene Diene Monomer) Rubber-Based Nanocomposites: Properties and Progress

“…Guo et al [49] studied the effects of the incorporation of MWCNTs on the char residue and carbothermal reduction reaction in EPDM-based nanocomposites. They observed that the In addition to its excellent heat resistance, elasticity and flexibility at low temperatures, weathering properties, oxidation resistance, ozone resistance, and aging resistance, EPDM has also been applied to a wide variety of applications, including weather-stripping for automobiles, roofing membranes, sealants, tubing, belts, radiators, thermal insulation, and electrical insulations [11,[15][16][17][18][19][20].…”

“…EPDM is one of the most studied and used synthetic rubbers by the scientific community and industry [ 10 ]. EPDM rubber is a member of the unsaturated polyolefin family; it is prepared via the polymerization of propylene and ethylene with a small quantity of non-conjugated diene (approximately 3–9%) [ 11 , 12 , 13 , 14 ]. Figure 1 illustrates the chemical structure of EPDM, which contains a saturated hydrocarbon backbone.…”

“…Various nanofillers with inherent properties have been used to reinforce EPDM rubber and obtain nanocomposites with improved final properties. Among these nanofillers, organic-based nanoparticles, such as carbon nanotubes (CNTs) [ 25 , 26 ], multi-walled carbon nanotubes (MWCNTs) [ 27 , 28 ], graphene [ 29 , 30 ], and carbon black (CB) [ 31 , 32 , 33 ], and inorganic-based nanoparticles, such as nanoclay [ 34 , 35 , 36 ], nanosilica [ 37 , 38 ], montmorillonite [ 11 , 39 ], and polyhedral oligomeric silsesquioxane (POSS) [ 40 , 41 ], should be highlighted.…”