Assessment of the devulcanization process of EPDM waste from roofing systems by combined thermomechanical/microwave procedures

Ethylene-propylene-diene rubber (EPDM) is a elastomer widely used in common industrial applications. EPDM can be shaped into sheets and employed as isolating material for roofing systems. In this study, scraps of from commercial, residential systems were treated by combined thermo-mechanical microwave devulcanization processes including peroxide benzoyl (BPO). The devulcanized (Dev-EPDM) was characterized cross-link density, Horikx plot, sol fraction content, SEM TGA analysis. order to assess the effect different factors implied (type process, temperature amount BPO), Fractional Factorial Design (FFD) method has been applied. obtained results show that, when methods are combined, produce an intense effect. It also found that presence BPO significative influence related BPO.