Abstract
We report the fabrication and properties of polyarylene ether nitrile (PEN) nanocomposite with 3D carbon nanotubes/graphene sheets network (Fe3O4-CNT/GS) bridged by magnetite. The Fe3O4-CNT/GS is firstly fabricated by one-step solvothermal method after the synthesis of phthalonitrile functionalized CNT (CNT-CN) and GO (GO-CNT). Fe3O4-CNT/GS is characterized by XPS and XRD, while the 3D frame of it is confirmed by SEM observation. Then, the obtained Fe3O4-CNT/GS is introduced into phthalonitrile end-capped polyarylene ether nitrile (PEN-Ph) to prepare the composites by solution-mixing assembly and solution casting method. Finally, the obtained PEN based nanocomposites are further treated at 320 °C to improve the properties of the composites. To study the effect of Fe3O4-CNT/GS on the PEN-Ph, the micro-morphologies, mechanical, thermal and dielectric properties of the obtained (Fe3O4-CNT/GS)/PEN nanocomposites films are investigated. Besides, the influence of the Fe3O4-CNT/GS content and the heat-treatment on the properties of the PEN composites are also investigated. The results show that Fe3O4-CNT/GS can improve the dielectric properties and maintain good mechanical properties of PEN composite simultaneously.
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