The Effect of N, N-m- Phenylenebismaleimide (HVA-2) Addition on Properties of Polypropylene (PP)/Ethylene-Propylene Diene Terpolymer (EPDM)/Natural Rubber (NR) Vulcanized Blends
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This paper discusses process development, morphology, oil resistance and gel content of polypropylene (PP)/ethylene-propylene diene terpolymer (EPDM)/natural rubber (NR) vulcanized blends with the addition of N,N-m- phenylenebismaleimide (HVA-2) as a compatibilizer. Blends were prepared in several blend ratios in Haake Polydrive with temperature and rotor speed of 180 oC and 50 rpm respectively. Results indicated that the combination of dicumyl peroxide (Dicup) with HVA-2 show high torque development and stabilization torque as compared to vulcanized blend alone. The combination of Dicup with HVA-2 have also showed higher oil resistance and gel content in all blend ratio compared to similar vulcanized blends without HVA-2 addition. SEM micrographs from the surfaces extraction of the blends support that the cross-linking and compatibilization have occurred during process of vulcanized blend containing HVA-2.