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Formation of Different Cu Nanopowders and Stability of Cu Fluids Produced by Electrical Explosion of Wire in Liquid

Nguyen M.-T., Kim J.-H., Kim J.-C.

Archives of Metallurgy and Materials

2018

Vol. 63, iss. 3

1453--1457

In this study, copper nanoparticles and nanofluids were synthesized by electrical explosion of wire (EEW) in liquid media such as water, ethanol, and acetone. The effect of the different conditions on the properties of the as-synthesized Cu powders and nanofluids were investigated. X-ray diffraction (XRD) analysis was employed to measure the phase of the as-synthesized powder. Only pure Cu phase appeared in case of acetone condition, but CuO and CuO2 phases could be observed in the others. The EEWed particle size was broadened from under 50 to 100 nm. The results showed that acetone was the best condition for achieving smaller particles, preventing the oxidation of the Cu particles and good stability of the nanofluids.

Effect of nanowires and nanoparticles of copper on the structure and properties of the nanocomposite polymeric materials

Dobrzański L. A., Czaja I.

Archives of Materials Science and Engineering

2015

Vol. 75, nr 1

18--29

Purpose: The main aim of this paper is to investigate the impact of nano-reinforcements in the form of Cu nanowires and Cu nanopowder on the structure and properties of polymeric composite materials Design/methodology/approach: Developed in this paper of nanocomposite materials reinforced with Cu nanopowders and Cu nanowires they have shown the ability to carry an electrical charge, which was confirmed by testing resistivity and resistance to electrical breakdown Findings: Research surface area of reinforce the material showed that the copperdimensional nanowires an attractive material for the strengthening of polymeric composite materials. Because of their shape and dimensions, the formation of percolation paths necessary for electrical charge in the insulating matrix, are a better material reinforcement of copper nanopowder Research limitations/implications: The phenomenon of current conduction through the polymer composite materials is an important property due to the use of these materials Originality/value: The paper presents the effect of the addition of one-dimensional nanowires of copper into the insulating matrix epoxy resin allowing electrical conductivity produced in this way, polymeric materials nanocomposites