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復(fù)合金屬層包覆碳納米管的制備及電磁屏蔽性能
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昆明理工大學(xué)材料科學(xué)與工程學(xué)院

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國家自然科學(xué)基金青年項(xiàng)目(項(xiàng)目號(hào)51301079)；云南省科技廳重大項(xiàng)目(項(xiàng)目號(hào)KKSB201451004)；云南省稀貴金屬材料協(xié)同創(chuàng)新基金(項(xiàng)目號(hào)KKPT201551005)


Electromagnetic shielding performance research of composite metal plating carbon nanotubes
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School of Materials Science and Engineering, Kunming University of Science and Technology

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    摘要:

    對(duì)碳納米管(CNTs)進(jìn)行復(fù)合金屬包覆，可以發(fā)揮不同組元間的復(fù)合效應(yīng)，提高在高頻范圍的電磁屏蔽性能。本文對(duì)CNTs進(jìn)行預(yù)處理后，采用超聲噴霧化學(xué)鍍的方法來制備鍍鎳碳納米管(Ni-CNTs)，在此基礎(chǔ)上分別采用化學(xué)鍍和共沉淀法制備鎳銀包覆碳納米管(Ni/Ag-CNTs)和鎳銅包覆碳納米管(Ni/Cu-CNTs)。采用TEM、FESEM和XRD對(duì)鍍層形態(tài)及結(jié)構(gòu)進(jìn)行表征，結(jié)果表明，采用超聲噴霧化學(xué)鍍方法，在改善CNTs分散性的前提下可實(shí)現(xiàn)鎳層在其表面均勻連續(xù)鍍覆；并結(jié)合化學(xué)鍍和共沉淀法分別成功制備出Ni/Ag-CNTs和Ni/Cu-CNTs。電磁屏蔽測(cè)試表明，Ni/Ag-CNTs和Ni/Cu-CNTs的電磁屏蔽性能顯著優(yōu)于Ni-CNTs (55.62dB)，分別達(dá)到了89.34 dB和72.21 dB。

    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.

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趙琪,劉意春.復(fù)合金屬層包覆碳納米管的制備及電磁屏蔽性能[J].稀有金屬材料與工程,2019,48(1):249~253.[Zhao Qi, Liu Yichun. Electromagnetic shielding performance research of composite metal plating carbon nanotubes[J]. Rare Metal Materials and Engineering,2019,48(1):249~253.]
DOI：10.12442/j. issn.1002-185X.20170361

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  • 收稿日期:2017-05-03
  • 最后修改日期:2017-08-15
  • 錄用日期:2017-09-11
  • 在線發(fā)布日期: 2019-02-18
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