研究了以碳纳米管(CNTs)和碳纤维(CF)作为复合导电剂的导电纸.通过高速剪切的方法将分散好的导电剂和纸浆纤维素在水溶液中复合,经真空抽滤法沉积得到导电纸.纤维状的导电剂与纸浆纤维搭建成三维导电网络,表现出了良好的柔韧性、导电性和电磁屏蔽性能.采用扫描电子显微镜、四探针电阻仪、矢量网络分析仪对其进行表征.研究表明,当碳纤维和碳纳米管以1∶1比例添加作为复合导电剂时,碳纤维-碳纳米管复合纸的导电性能和电磁屏蔽性能较碳纤维或碳纳米管单一导电剂提高明显.复合导电纸的电导率达到280.1 S/m,在175 ～1600MHz频段电磁屏蔽效能达到37 ～ 44 dB,较碳纤维纸提高2 dB,较碳纳米管纸提高10 dB.
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