研究旨在探究碳纳米管对聚醚醚酮（PEEK）的电磁屏蔽和导电性能的影响。使用溴化十六烷基三甲铵（CTAB）为分散剂制备了改性的多壁碳纳米管（mMWCNT），通过湿法混合与挤出共混的加工技术制备了PEEK/mMWCNT复合材料。结果表明：mMWCNT在PEEK基体中分散良好，这对提高复合材料的力学性能和导电性能提供了有力支持。当mMWCNT质量分数低于2.0%时，PEEK/mMWCNT复合材料的力学性能提升明显。mMWCNT在PEEK中形成了导电性良好的3D网络。在电磁屏蔽性能方面，PEEK/mMWCNT复合材料的电磁屏蔽总效能介于3.35~24.47 dB之间，表明该复合材料对X波段电磁波具有良好的吸收性。研究证实了PEEK/mMWCNT复合材料具有优越导电和电磁屏蔽性能，因此该复合材料在电子设备、通信技术和军事防护等领域具有广泛应用潜力。

The aim of this study is to investigate the effect of carbon nanotubes on the electromagnetic shielding and electrical conductivity of polyetheretherketone(PEEK). The modified multi-walled carbon nanotubes (mMWCNT) was prepared using cetyltrimethylammonium bromide (CTAB) as a dispersing agent. The PEEK/mMWCNT composits were prepared by the processing technology of wet mixing and extrusion blending. The results showed that the mMWCNT were well-dispersed in PEEK matrix, which provided strong support for improving the mechanical and electrical properties of the composites. When the mMWCNT mass fraction was lower than 2.0%, the mechanical properties of PEEK/mMWCNT composites were significantly improved. The mMWCNT formed a 3D network with good conductivity in PEEK. In terms of electromagnetic shielding performance, the total electromagnetic shielding efficiency of PEEK/mMWCNT composites ranged from3.35 dB to 24.47 dB, which indicated a good absorption of X-band electromagnetic waves. This study confirmed that PEEK/mMWCNT composites have superior electrical conductivity and electromagnetic shielding properties. Hence, the composites have a wide application potential in electronic equipment, communication technology and military protection.