THE PREPARATION OF NBR/ENR COMPOSITE FOR OIL SEAL APPLICATIONS

Abstract

The objective of this study was to determine the mechanical, swelling, and thermal properties of nitrile butadiene rubber (NBR)/epoxidized natural rubber (ENR) composite for oil seal applications. The blend was prepared with different ENR content and different plasticizer type (paraffinic oil and dioctyl phthalate). The composites were prepared by open milling process where the different amount of ENR was added ranging from 0 to 20 phr. Test results showed that dioctyl phthalate provides better compression set, swelling, and aging properties than paraffinic oil. Physical properties were not affected by ENR content up to 20 phr. The most promising sample from the study contains NBR 80 phr, ENR 20 phr, and dioctyl phthalate as a plasticizer.

Keywords

• mechanical properties
• oil seal
• plasticizer
• rubber blend
• swelling