| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 830300 | Materials & Design (1980-2015) | 2013 | 11 Pages |
In this work the rheological, physico-mechanical, thermal and morphology studies were performed on a blend of EPDM/SBR (ethylene propylene diene monomer/styrene butadiene rubber) (50/50) loaded with a new prepared core–shell pigment based on a core of zinc oxide which presents the major component of the prepared pigment (≈90%) covered with a shell of phosphate, this shell comprises only about (≈10%). The new pigments were added in different concentration to the rubber blend and were compared to blends pigmented with commercial zinc oxide and zinc phosphate. The results showed that the new pigments exhibited better rheometric, and physico-mechanical properties. In addition, these prepared pigments showed decrease of equilibrium swelling in toluene solvent and increase in crosslink density for EPDM/SBR blend. The efficiency of prepared core–shell pigments were also evaluated by studying the surface morphology (SEM) and thermal properties TGA (thermal gravimetric analysis). The prepared pigments loading of 10 phr (parts per hundred parts of rubber) showed the optimum properties of EPDM/SBR blend than rubber loaded with higher concentration of the commercial pigments, which indicated that the new core–shell pigment is more economic with better performance than commercial zinc oxide and phosphates individually.
► EPDM/SBR was loaded with new core–shell pigments with ZnO core and phosphate shells. ► Blends with prepared pigments showed better mechanical properties than commercials. ► Blends with prepared pigments showed higher crosslink-density than commercial ones. ► Blends with core–shell pigments showed better thermal resistance than commercials ones.
