Abstract: The research focused on the effect of processing temperature on the crystallization process and the properties of the PA6/CaCl2 composites which were prepared through melting extrusion. The results showed that, with the increasing of the processing temperature, the deeper the complex degree of the PA6 and CaCl2 was, the smaller the crystallinity of the PA6/CaCl2 composites was, the more the crystal degree was imperfect; the higher the viscosity of the PA6/CaCl2 composites was, the smaller the melt index was. With the increasing of the processing temperature, the tensile strength of the PA6/CaCl2 composites was increased firstly and then decreased, and finally nearly becomed constant. The Izod impact strength and bending strength with an overall increasing trend when the processing temperature was increased.

Key words: polyamide 6, calcium chloride, processing temperature, structure, property