Mechanical and mechanical dynamic properties of PVDF/FKM Blends in different curing systems

Blends of poly (vinylidene fluoride) (PVDF) and fluororubber (FKM) were prepared in an internal mixer by dynamic vulcanization. The effect of FKM with and without curing system on mechanical and dynamic properties of the PVDF/FKM blends was investigated. The tensile test showed its tensile strength and modulus decreased after blending but the elongation-at-break naturally increased because of the presence of rubber in PVDF matrix. This was confirmed by one glass transition temperature obtained from DMTA test which indicated two different values of the pure polymers. The increase of FKM content showed a favorable effect on the crystallization of the PVDF component