Fracture Toughness of Polyamide 6/Maleated Styrene-Ethylene-Butylene-Styrene/Silicon Carbide Nanocomposites

摘要

Polyamide 6 (PA6) based nanocomposites toughened with 20 wt% maleated styrene-ethylene-butylene-stryrene (mSEBS) reinforced with 1-7 wt% silicon carbide nanoparticles (SiC_p) were fabricated via melt blending followed by injection molding. Tensile results showed that SiC_p additions improve the Young's modulus and tensile strength of PA6/mSEBS blends but decrease their tensile ductility and impact strength. EWF test revealed that the SiC_p additions reduce both the specific essential work of fracture and specific non-essential plastic work of fracture. Thus SiC_p additions are detrimental to the fracture toughness of PA6/mSEBS blend.