4. Conclusions
We prepared specimens according to the FKM and HNBR blend ratio by means of a mechanical blending method and examined the basic properties, heat resistance, oil resistance and fuel resistance, as well as chemical characteristics (FTIR, TGA, DSC, and SEM). As a result, hardness and tensile strength decreased along with increasing HNBR contents. Tensile strength and elongation increased by adding a compatibilizer (KBM503), which contributed to increase the blend effect. Suitable basic properties were obtained by controlling the amount of a reinforcing agent. Heat resistance increased along with increasing HNBR contents. A synergistic effect of heat resistance was achieved by blending FKM and HNBR, and fluid characteristics (oil resistance and fuel resistance) are also same Heat resistance.