Research of influence factors on the mechanical properties of PA6/EPDM-M/CaCO_3 ternary composite

PA6/EPDM-M/CaCO3 ternary composite was prepared by the two step compounding route.The effects of the sizes of CaCO3 and its dosage,the dosage of EPDM-M and premix time on the mechanical properties of the ternary composites were studied.The results showed that the size of CaCO3 was the key factor,especially to toughness of the ternary composites.The results of SEM investigation indicated that the composites which contained the CaCO3 particle size was lesser emerged more obvious plastic deformation when they suffered impact,and the fracture surface present microfiber-forming that lead to higher impact strength.