Degradation of swollen NR/EPDM filled with graphene nanoplatelets in different types of service oils for engine mounting

Rubber engine mounts are prone to chemical and environmental degradation due to the high-temperature exposure to various factors during service. Graphene derivative has been known as a promising material with outstanding physical, mechanical, electrical, and thermal properties hence serve as an excellent filler in elastomer composites. This study focuses on the degradation of swollen NR/EPDM blend and NR/EPDM filled with graphene nanoplatelets in different automotive service liquids and later subjected to tensile testing. The blends and nanocomposites were melt compounded using an internal mixer and fabricated by using a hot press. They were then swollen in gear, brake, and engine oils for 6 and 27 days. The change in mass, length and tensile properties are measured to determine the degradation effect. Swollen blends and nanocomposites experienced severe dimension changes and dropped in tensile properties. The results were in good agreement with morphological, structural, thermal, and compositional analyses.