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Fabrication and Application of Electrically Conducting Composites
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Fabrication and Application of Electrically Conducting Composites

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 14224

Special Issue Editor

Prof. Dr. Andrzej Katunin

E-Mail Website
Guest Editor
Department of Fundamentals of Machinery Design, Silesian University of Technology, 44-100 Gliwice, Poland
Interests: structural degradation; structural damage identification; non-destructive testing; structural health monitoring; fatigue and fracture mechanics; signal and image processing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electrically conducting composites are an emerging material in a dynamically developing industry nowadays. Due to the new possibilities in materials technologies which have appeared in the last few decades, such composites have found numerous applications such as in aeronautics for electromagnetic interference shielding, lightning strike protection, de-icing of structural elements, biomedical applications, sensing and actuating technologies, batteries and energy storage technologies, and many more. Within the broad range of various electrically conducting composites, one can distinguish three main and intensively developed directions: composites based on carbon nanostructures, metallic particles, and those based on intrinsically conducting polymers. The progress in development of such materials makes them more efficient in terms of electrical conductivity, electromagnetic shielding capabilities, and general multifunctionality, which creates new applications for them.

This Special Issue is focused on recent attempts in the development, fabrication, and application of various electrically conducting composites based on above-mentioned types of electrically conducting fillers or matrices. The submissions may include interdisciplinary studies from the borderline of materials science, chemistry, mechanics, electronics, physics, etc., as well as practical case studies related to the aforementioned thematic areas and similar ones. High-quality articles containing original research results and review articles are welcomed.

Prof. Dr. Andrzej Katunin
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Electrically conducting composites with carbon nanostructures
  • Electrically conducting composites with metallic particles
  • Electrically conducting composites with intrinsically conducting polymers
  • Electromagnetic interference and lightning strike protection
  • Biomedical applications of electrically conducting composites
  • Synthesis and manufacturing of electrically conducting composites
  • Smart and multifunctional structures based on electrically conducting composites

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Published Papers (5 papers)

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Research

15 pages, 5873 KiB  
Article
Effect of SWCNT-Tuball Paper on the Lightning Strike Protection of CFRPs and Their Selected Mechanical Properties
by Kamil Dydek, Anna Boczkowska, Rafał Kozera, Paweł Durałek, Łukasz Sarniak, Małgorzata Wilk and Waldemar Łogin
Materials 2021, 14(11), 3140; https://doi.org/10.3390/ma14113140 - 7 Jun 2021
Cited by 13 | Viewed by 3983
Abstract
The main aim of this work was the investigation of the possibility of replacing the heavy metallic meshes applied onto the composite structure in airplanes for lightning strike protection with a thin film of Tuball single-wall carbon nanotubes in the form of ultra-light, [...] Read more.
The main aim of this work was the investigation of the possibility of replacing the heavy metallic meshes applied onto the composite structure in airplanes for lightning strike protection with a thin film of Tuball single-wall carbon nanotubes in the form of ultra-light, conductive paper. The Tuball paper studied contained 75 wt.% or 90 wt.% of carbon nanotubes and was applied on the top of carbon fibre reinforced polymer before fabrication of flat panels. First, the electrical conductivity, impact resistance and thermo-mechanical properties of modified laminates were measured and compared with the reference values. Then, flat panels with selected Tuball paper, expanded copper foil and reference panels were fabricated for lightning strike tests. The effectiveness of lightning strike protection was evaluated by using the ultrasonic phased-array technique. It was found that the introduction of Tuball paper on the laminates surface improved both the surface and the volume electrical conductivity by 8800% and 300%, respectively. The impact resistance was tested in two directions, perpendicular and parallel to the carbon fibres, and the values increased by 9.8% and 44%, respectively. The dynamic thermo-mechanical analysis showed higher stiffness and a slight increase in glass transition temperature of the modified laminates. Ultrasonic investigation after lightning strike tests showed that the effectiveness of Tuball paper is comparable to expanded copper foil. Full article
(This article belongs to the Special Issue Fabrication and Application of Electrically Conducting Composites)
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11 pages, 3604 KiB  
Article
High AC and DC Electroconductivity of Scalable and Economic Graphite–Diamond Polylactide Nanocomposites
by Jacek Fal, Katarzyna Bulanda, Mariusz Oleksy, Jolanta Sobczak, Jinwen Shi, Maochang Liu, Sławomir Boncel and Gaweł Żyła
Materials 2021, 14(11), 2835; https://doi.org/10.3390/ma14112835 - 26 May 2021
Cited by 7 | Viewed by 2866
Abstract
Two types of graphite/diamond (GD) particles with different ash content was applied to prepare new electroconductive polylactide (PLA)-based nanocomposites. Four samples of nanocomposites for each type of GD particles with mass fraction 0.01, 0.05, 0.10, and 0.15 were prepared via an easily scalable [...] Read more.
Two types of graphite/diamond (GD) particles with different ash content was applied to prepare new electroconductive polylactide (PLA)-based nanocomposites. Four samples of nanocomposites for each type of GD particles with mass fraction 0.01, 0.05, 0.10, and 0.15 were prepared via an easily scalable method—melt blending. The samples were subjected to the studies of electrical properties via broadband dielectric spectroscopy. The results indicated up to eight orders of magnitude improvement in the electrical conductivity and electrical permittivity of the most loaded nanocomposites, in reference to the neat PLA. Additionally, the influence of ash content on the electrical conductivity of the nanocomposites revealed that technologically less-demanding fillers, i.e., of higher ash content, were the most beneficial in the light of nanofiller dispersibility and the final properties. Full article
(This article belongs to the Special Issue Fabrication and Application of Electrically Conducting Composites)
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Graphical abstract

9 pages, 2817 KiB  
Communication
A Straightforward Approach to Create Ag/SWCNT Composites
by Monika Rdest and Dawid Janas
Materials 2021, 14(8), 1956; https://doi.org/10.3390/ma14081956 - 14 Apr 2021
Cited by 1 | Viewed by 1753
Abstract
Flexible and conductive materials have a high application potential across many parts of modern life. In this work, thin free-standing films from single-walled carbon nanotubes (SWCNTs) were doped with Ag to enhance their electrical conductivity. A facile method to integrate these two materials [...] Read more.
Flexible and conductive materials have a high application potential across many parts of modern life. In this work, thin free-standing films from single-walled carbon nanotubes (SWCNTs) were doped with Ag to enhance their electrical conductivity. A facile method to integrate these two materials is described herein. As a consequence, the material exhibited a six-fold boost to the electrical conductivity: an increase from 250 ± 11 S/cm to 1721 ± 125 S/cm. Interestingly, the specific conductivity remained at a comparable level upon doping, so the material was deemed promising in exploitation fields whereweight is of the essence. Furthermore, the material showed good bending characteristics, thereby revealing its applicability in flexible electronics. Full article
(This article belongs to the Special Issue Fabrication and Application of Electrically Conducting Composites)
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18 pages, 9346 KiB  
Article
Investigation of the Possibilities of Wool Fiber Surface Modification with Copper Selenide
by Olga Belukhina, Daiva Milasiene and Remigijus Ivanauskas
Materials 2021, 14(7), 1648; https://doi.org/10.3390/ma14071648 - 27 Mar 2021
Cited by 13 | Viewed by 3008
Abstract
A study of altering the conductive properties of wool fibers by applying copper selenide is presented. The researched modification of wool fibers was based on a two-stage adsorption-diffusion process. X-ray diffraction, scanning electron microscope, energy-dispersive X-ray spectrum, and Fourier transform infrared spectroscopy were [...] Read more.
A study of altering the conductive properties of wool fibers by applying copper selenide is presented. The researched modification of wool fibers was based on a two-stage adsorption-diffusion process. X-ray diffraction, scanning electron microscope, energy-dispersive X-ray spectrum, and Fourier transform infrared spectroscopy were performed to evaluate the morphological and physical characteristics of all CuxSe-coated wool fibers. X-ray diffraction (XRD) data showed a single, Cu0.87Se (klockmannite), crystalline phase present, while Atomic Absorption Spectroscopy (AAS) and Energy Dispersive X-ray (EDX) analyses showed that the concentrations of Cu and Se in copper selenide coatings depend on the number of wool fiber treatment cycles. It was determined that a dense layer of CuxSe grows through a nucleation mechanism followed by particle growth to fill out the complete surface. It was found that the conductivity of the coated wool fibers depends on the quality and density of the copper selenide coating, thus the resistance of electrically impermeable wool fibers can be reduced to 100 Ω by increasing the number of treatment cycles. Full article
(This article belongs to the Special Issue Fabrication and Application of Electrically Conducting Composites)
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9 pages, 2464 KiB  
Communication
Enhancing Electrical Conductivity of Composites of Single-Walled Carbon Nanotubes and Ethyl Cellulose with Water Vapor
by Monika Rdest and Dawid Janas
Materials 2020, 13(24), 5764; https://doi.org/10.3390/ma13245764 - 17 Dec 2020
Viewed by 1804
Abstract
Electrically conducting composites are highly sought-after materials. Their capacity to withstand mechanical deformation while simultaneously offering facile charge transport recently opened numerous exploitation fields for them. In this contribution, composites were made from single-walled carbon nanotubes (SWCNTs) and ethyl cellulose (EC). Then, a [...] Read more.
Electrically conducting composites are highly sought-after materials. Their capacity to withstand mechanical deformation while simultaneously offering facile charge transport recently opened numerous exploitation fields for them. In this contribution, composites were made from single-walled carbon nanotubes (SWCNTs) and ethyl cellulose (EC). Then, a straightforward process of doping involving water vapor was developed and tested over 30 days. The inclusion of water in the EC/SWCNT network resulted in a notable increase in the electrical conductivity from 250 ± 21 S/cm to 905 ± 34 S/cm. Interestingly, doping of the material experienced remarkable stability due to the favorable surface chemistry of the EC filler. Full article
(This article belongs to the Special Issue Fabrication and Application of Electrically Conducting Composites)
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