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<p>Nickel nanoparticles (NiNPs) were synthesized by reducing nickel ions with hydrazine in an alkaline solution of ethylene glycol under different conditions. It was found that under the conditions of homogeneous nucleation, the obtained NiNPs are irregular in shape and form continuous linear agglomerates with a&#xa0;length of 1.5–3.5 μm, and, in contrary, under the conditions of heterogeneous nucleation, monodisperse nanopowders with an average particle diameter of 180±40 nm are formed. NiNPs were used as fillers for the preparation of electroconductive nickel-containing polymer composite materials with electromagnetic interference shielding properties. The specific electrical conductivity of the composite material is 30 S/cm, and the level of attenuation of high-frequency electromagnetic radiation is 25 dB (approx. 100 dB/mm) at the filler content of 10 vol.%.</p>

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Nickel-containing composite material for electromagnetic radiation shielding

  • 期刊论文

  • 发表日期：

    2025年9月18日

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  • A. R. Kytsya,
  • L. I. Bazylyak,
  • A. L. Zirka,
  • D. S. Zavadsky,
  • S. D. Zibin,
  • Ya. V. Pilyuk,
  • V. A. Vynar,
  • V. Ya. Podhurska,
  • I. Yu Zavaliy

摘要

Nickel nanoparticles (NiNPs) were synthesized by reducing nickel ions with hydrazine in an alkaline solution of ethylene glycol under different conditions. It was found that under the conditions of homogeneous nucleation, the obtained NiNPs are irregular in shape and form continuous linear agglomerates with a length of 1.5–3.5 μm, and, in contrary, under the conditions of heterogeneous nucleation, monodisperse nanopowders with an average particle diameter of 180±40 nm are formed. NiNPs were used as fillers for the preparation of electroconductive nickel-containing polymer composite materials with electromagnetic interference shielding properties. The specific electrical conductivity of the composite material is 30 S/cm, and the level of attenuation of high-frequency electromagnetic radiation is 25 dB (approx. 100 dB/mm) at the filler content of 10 vol.%.