▎ 摘　　要

Phthalonitrile end-capped polyarylene ether nitrile (PEN-Ph) nanocomposites with Cu2+ bridged carbon nanotube and graphene oxide (GO) network (CNT/GO) were successfully prepared. The GO sheets were isolated and bridged by CNTs through copper ion coordination, resulting in strong synergetic enhancement on the properties of the PEN-Ph based nanocomposites. The influences of the CNT/GO content and the post-crosslinking reaction on the mechanical, thermal and electrical properties were investigated. With the incorporation of CNT/GO, the mechanical, thermal and electrical properties of the nano composites were enhanced efficiently. After being crosslinked at 290 degrees C, the performances of the obtained nanocomposites were further improved. For the sample with 1.50 wt% CNT/GO crosslinked at 290 degrees C, the glass transition temperature, tensile strength and dielectric constant increased by about 40 degrees C, 10 MPa and 80 compared with the sample without crosslinking. The PEN-Ph based nanocomposites will be a potential candidate as high performance electronic devices materials. (C) 2016 Elsevier B.V. All rights reserved.