Experimental study of impact resistance in TPU and Multi-walled carbon nanotube reinforced PA۶ -Based Nanocomposites

Polymer nanocomposites based on PA۶/TPU reinforced with carbon nanotubes were prepared via melt-mixing technique using a co-rotating twin-screw extruder. The morphology and mechanical properties of different samples were studied. SEM analysis indicated good compatibility between blended phases in the presence and absence of CNTs. Moreover, SEM showed uniform dispersion of CNTs in polymer matrix and good adhesion of polymer to CNTs. According to the mechanical impact resistance test results, the addition of TPU into PA۶ significantly increased notch-impact strength. Inclusion of CNTs into PA۶/TPU improved notch-impact resistance. The appropriate dispersion of CNT and interaction of constituent phases were crucial factors yielding improved properties in PA۶/TPU/CNT nanocomposites.

Keywords:

PA۶ , TPU , CNT , Morphology , Mechanical property