In this work, a soluble poly (aryl ether ketone) with an azide-group (az-PAEK) was designed and synthesized, and poly (aryl ether ketone) was successfully grafted onto the surface of multi-walled carbon nanotubes (PAEK-g-MWCNTs) by [2 + 1] cycloaddition reaction between azide-group of az-PAEK and similar carbon-carbon double bond (CC) on MWCNTs. In addition, PAEK-g-MWCNTs were dispersed into semi-crystalline poly (ether ether ketone) (PEEK) matrix as fillers, the electrical conductivity, electromagnetic shielding performance, mechanical properties and thermal stability of PAEK-g-MWCNTs/PEEK composites with different filler contents were discussed. The results show that the excellent dispersion effect of PAEK-g-MWCNTs filler in PEEK matrix leads to the percolation threshold of conductivity and electromagnetic shielding of PAEK-g-MWCNTs/PEEK composites are only 0.372 vol% and 0.496 vol% respectively, which endows PAEK-g-MWCNTs/PEEK composites with extraordinary conductivity (1.123 S/cm) and electromagnetic shielding performance (36 GHz, 53.56 dB). At the same time, the mechanical properties (tensile strength of 118.2 MPa) and thermal stability (561 °C) of PAEK-g-MWCNTs/PEEK composite are enhanced, which is a kind of structure-function integrated composite with low percolation threshold of both conductivity and electromagnetic shielding.

在这项工作中，设计并合成了具有叠氮基团的可溶性聚（芳醚酮）（az-PAEK），并成功将聚（芳醚酮）接枝到多壁碳纳米管（PAEK-g）的表面上。 -MWCNTs) 通过 z-PAEK 的叠氮化物基团与类似的碳碳双键 (CC) 在 MWCNTs 上。此外，将 PAEK-g-MWCNTs 作为填料分散到半结晶聚醚醚酮 (PEEK) 基体中，PAEK-g-MWCNTs/PEEK 复合材料的导电性、电磁屏蔽性能、机械性能和热稳定性与讨论了不同的填料含量。结果表明，PAEK-g-MWCNTs填料在PEEK基体中优异的分散效果导致PAEK-g-MWCNTs/PEEK复合材料的电导率和电磁屏蔽渗透阈值分别仅为0.372 vol%和0.496 vol%，这使得PAEK-g-MWCNTs/PEEK 复合材料具有非凡的导电性 (1.123 S/cm) 和电磁屏蔽性能 (36 GHz, 53.56 dB)。同时，机械性能（抗拉强度118.