Study On Structuer And Property Of PA6/PP Alloy

In this work, the mechanical and morphological properties of polypropylene/PA6 blends compatibilized with PP grafted with maleic anhydride (PP-g-MAH) was studied . At first, mechanical properties, absorbing water content and heat distortion temperature of the prepared blends was investigated. Moreover, the phase morphology of the etched surfaces of polypropylene/PA6 blends was studied by the means of Scanning Electron Microscopy(SEM)micrographs; then the crystallization characteristics such as crystallization morphology ,crystallinity, etc, was investigated by means of optical microscope and Differential Scanning Calorimerer(DSC).The results showed that although addition of PP and PP-g-MAH improve impact behavior and lowers absorption, but the mechanical properties decrease. There is a strong relationship between nylon/compatibilizer ratio and mechanical properties, when PA6 content remained. However, if the two phases have satisfactory interfacial adhesion and interfacial stress, the content of PA6 play a major role for mechanical properties.Chemical reaction between the components of a blend will be reflected in the viscosity. It is evident that the blend exhibits a typical negative deviation behavior; the weak interfacial adhesion causes the interfacial slip between the phases. The addition of compatibilizer resulted in an increase in viscosity.The testing result showed that both two formulas can accurately forecast tensile strength of polypropylene/PA6 blends. This indicates that there is a adequate chemical interaction between PP dispersion phase and PA6 matrix. Compared two formulas, we found the second is more closer to experiment data than the first.To increasing the mechanical properties, we used glass fiber reinforced PP(GF-PP) instead of PP. Compared with PA6/PP/PP-MAH blends, PA6/GF-PP/PP-MAH blends have better mechanical properties, but elongation at break and impact strength evidence decline.Recently nano-CaCO₃ particles have been proved to be an effective way for the improvement of the mechanical properties. The mechanical properties, the morphology and the crystalline behaviors of PA6/PP/PP-g-MAH/modified nano-CaCO₃ blends was studied in this article. As content of modified nno- CaCO₃ blends...