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赵琪,刘意春.复合金属层包覆碳纳米管的制备及电磁屏蔽性能[J].稀有金属材料与工程(英文),2019,48(1):249~253.[Zhao Qi and Liu Yichun.Electromagnetic shielding performance research of composite metal plating carbon nanotubes[J].Rare Metal Materials and Engineering,2019,48(1):249~253.]
Electromagnetic shielding performance research of composite metal plating carbon nanotubes
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Received:May 03, 2017  Revised:August 15, 2017
DOI:
Key words: CNTs  ultrasonic spray  electroless plating  coprecipitation  electromagnetic shielding
Foundation item:国家自然科学基金青年项目(项目号51301079);云南省科技厅重大项目(项目号KKSB201451004);云南省稀贵金属材料协同创新基金(项目号KKPT201551005)
Author NameAffiliation
Zhao Qi and Liu Yichun  
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Abstract:
      Carbon nanotubes(CNTs) coated with metals will show further improvement of electromagnetic shielding performance,due to the composite effect of CNTs and metal coatings. In this paper, Ni-coated CNTs (Ni-CNTs)were firstly prepared with a novel electroless plating method assisted with ultrasonic spray atomization, and then silver coated Ni-CNTs(Ni/Ag-CNTs) and copper coated Ni-CNTs(Ni/Cu-CNTs) were prepared respectively by electroless plating or coprecipitation. The obtained composite powders were characterized by TEM、FESEM and XRD. The Ni-CNTs showed continuous and uniform nickel layers on highly dispersed CNTs,and both the Ni/Ag-CNTs and Ni/Cu-CNTs composite powders showed the morphology of Ni-CNTs embedded in silver or copper particles. The multi-metal coated CNTs showed significant improvement of electromagnetic shielding properties, and the shielding effectiveness of Ni/Ag-CNTs, Ni/Cu-CNTs and Ni-CNTs was 89.34 dB, 72.21 dB and 55.62 dB, respectively.