Compatibility and Thermal Stability of EPDM-NBR Elastomer Blends

Author:

Botros S. H.1,Tawfic M. L.2

Affiliation:

1. Polymers Department National Research Center, Dokki, Cairo, Egypt,

2. Polymers Department National Research Center, Dokki, Cairo, Egypt

Abstract

Ethylene propylene diene monomer rubber (EPDM) is blended with nitrile rubber (NBR). The morphology of this blend is improved by the addition of modified EPDM in small amounts. The intrinsic viscosity, permittivity measurements, and scanning electron microscopy revealed improved compatibility of these rubbers. Mechanical properties after thermal aging of the blends containing modified EPDM show positive deviation from the additive rule. Of all EPDM-NBR blend ratios investigated, the 25/75 blend ratio compatibilized with aminated epoxidized EPDM, shows the best mechanical properties, heat resistance, and stability against UV irradiation.

Publisher

SAGE Publications

Subject

Materials Chemistry,Polymers and Plastics

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