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Electrophysical Characteristics of Epoxy Nanocomposites with Ultralow Percolation Thresholds

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Abstract

Nanocomposites based on ED-20 epoxy resin and single-walled carbon nanotubes (SWCNT) with high aspect ratios (l/d ~ 2500) have been produced. The filler has been introduced into a matrix using a high speed mixer without solvents. The electrical and physical characteristics of produced composites have been examined at various SWCNT concentrations. A low percolation threshold is experimentally established, indicating weak filler agglomerates in the epoxy matrix. The dielectric permittivity and tangent loss are plotted as the functions of the SWCNT concentration within a wide frequency range. All dependences exhibit the presence of a relaxation peak shifting toward the higher frequencies as the filler concentration increases. The investigation of nanocomposite cleavages via scanning electron microscopy reveals a uniform SWCNT distribution in the matrix.

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Funding

This work was supported by the Federal Agency for Scientific Organizations of Russia within the framework of the State task (project no. 45.11).

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Authors and Affiliations

  1. Semenov Institute of Chemical Physics, 119991, Moscow, Russia

    I. Yu. Klyuev, A. M. Kuperman & V. I. Solodilov

  2. Enikilopov Institute of Synthetic Polymer Materials, 117393, Moscow, Russia

    V. G. Shevchenko

Authors
  1. I. Yu. Klyuev
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  2. V. G. Shevchenko
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  3. A. M. Kuperman
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  4. V. I. Solodilov
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Correspondence to I. Yu. Klyuev.

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Translated by O. Maslova

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Klyuev, I.Y., Shevchenko, V.G., Kuperman, A.M. et al. Electrophysical Characteristics of Epoxy Nanocomposites with Ultralow Percolation Thresholds. Inorg. Mater. Appl. Res. 11, 416–419 (2020). https://doi.org/10.1134/S2075113320020197

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  • DOI: https://doi.org/10.1134/S2075113320020197

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