Abstract
Lower-melting point polyamide-6 (LPA6) with the melting point of 198°C was prepared through melting extrusion. Blends of poly (Vinyl Chloride) (PVC) and LPA6 which use epoxy (EP) as compatibilizer were prepared by blending PVC and LPA6. The effects of the composition of PA6 and epoxy on the morphology and mechanical properties were investigated by differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and X-ray diffraction (XRD). The behavior of the blends was also determined experimentally using the dynamic mechanical analysis (DMA). Experiments revealed that, the epoxy resin F51 plays a compatibilizer. The more of the content of epoxy resin, the better of compatibility between PVC and PA6. With the increase of PA6, the degree of crystallization, crystallization rate and the regularity of crystal grain increased, the tensile strength declinged, the flexural strength and notched impact strength increase first and then decrease, both of then had an extreme value when the content of PA6 is 20wt%.
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