Reinforced and Toughened Epoxy Matrix by Ex-situ Dispersed and Aligned MWNTs-EP in Polysulfone Hybrid Nanofibers

摘要

In our previous work, the inhomogeneous phase structures have been observed in PSF nanofibers toughened epoxy matrix [1,2], and PSF spheres generated from phase separation of nanofibers exhibited random alignment. On the basis of the inhomogeneous phase separation, the electrospinning-induced dispersion and alignment of CNTs were introduced to fabricate CNTs/PSF hybrid nanofibers with well dispersed and aligned CNTs, and to prepare reinforced and toughened epoxy matrix using such hybrid nanofibers. During the inhomogenenous phase separation of hybrid nanofibers, the CNTs were well dispersed and aligned in the phase structure due to the ex-situ dispersion and alignment of CNTs in hybrid nanofibers. Herein, a schematic representation of the dispersion and alignment state of MWNTs-EP during the inhomogeneous phase separation of hybrid nanofibers reinforced and toughened epoxy was proposed and verified, and the mechanical properties of hybrid nanofibers reinforced and toughened epoxy matrix were also discussed.