EFFECT OF BLEND COMPOSITION OF EPOXIDIZED NATURAL RUBBER AND FLUOROPLASTIC VIA DYNAMIC VULCANIZATION

摘要

This study is purposed to develop a thermoplastic elastomer via dynamic vulcanization made of epoxidized natural rubber (ENR) and poly(vinylidene fluoride) (PVDF). Rubber parts were mixed at room temperature by using two roll mill, then fed in twin screw extruder with thermoplastic parts to occur dynamic vulcanization for pre-cured stage and compression molding for post-cured stage. This research was emphasized on the contents of ENR, PVDF and curing agent including the addition of PLA that affected on the properties of the dynamically vulcanized blends in comparison to the ternary ones. Mechanical properties including tensile strength and hardness were observed. Oil swelling test was studied by using 4 fuel oil types which are gasohol 91, gasohol 95, E20 and E85 at room temperature. It was found that increasing thermoplastic and DBPH contents have enhanced the tensile strength, young's modulus and oil swelling resistance. Addition of PLA gave similar results as non-additional ones in term of oil swelling resistance.