Special Issue "Dielectric Polymer Materials: Fabrication, Characterization and Application"

A special issue of Materials (ISSN 1996-1944).

Deadline for manuscript submissions: 30 June 2020.

Special Issue Editor

Prof. Georgios C. Psarras
E-Mail Website
Guest Editor
Smart Materials & Nanodielectrics Laboratory, Department of Materials Science, University of Patras, 26504 Patras, Greece
Interests: smart materials; polymer nanocomposites; polymers; nanodielectrics; dielectric behavior; conductivity; storing/retrieving energy; stimuli-responsive materials; active dielectrics
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Special Issue Information

Dear Colleagues,

Polymers constitute an important class of engineering materials in everyday life and high-tech applications. The majority of polymers and polymer-based composites are classified as insulators, because they exhibit very low conductivity. Thermoplastics, thermosettings, elastomers, biopolymers, polymer blends, and their micro- and nanocomposites belong to this category. All of them are considered to be dielectric materials, and their electrical performance is related to their polarization, dielectric permittivity and loss, relaxation phenomena, interfacial effects, conductance mechanisms, and dielectric breakdown strength. The dielectric response of polymer dielectrics can be tuned by controlling the fabrication method and the ingredients.

Current and potential applications of polymer-based dielectrics include, but are not limited to, integrated capacitors, hybrid electric vehicles, cellular phones, microelectronic devices, packaging, solar cells, batteries, strain sensors, interlayer capacitors, self-current regulators, wireless personal digital assistance, electromagnetic shielding, energy storage devices, and so on.

In this Special Issue on “Dielectric Polymer Materials: Fabrication, Characterization, and Application”, we welcome original research and reviews on experimental or theoretical/computational studies of all kinds on polymer-based dielectric materials. The design and fabrication of novel polymer-based dielectric materials, polymer matrix micro- and nanocomposites and hybrids, biological systems, electrical engineering devices, insulation systems, stimuli-responsive materials, smart materials, the structure–properties relationship, and all kinds of current and forthcoming applications comprise a short—and definitely not exhaustive—list of the possible subjects for this Special Issue. 

Prof. Georgios C. Psarras
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 papers will be 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 2000 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

  • Polymers
  • Polymer micro/nano-composites
  • Hybrids
  • Dielectric permittivity
  • Dielectric loss
  • Insulation
  • Relaxations
  • Molecular mobility
  • Polarization
  • Interfacial effects
  • Conductivity mechanisms
  • Glass-to-rubber transition
  • Stimuli-responsive polymers
  • Multifunctional materials
  • Nanodielectrics
  • Energy materials

Published Papers (1 paper)

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Research

Open AccessArticle
Temperature Effects on the Dielectric Properties and Breakdown Performance of h-BN/Epoxy Composites
Materials 2019, 12(24), 4112; https://doi.org/10.3390/ma12244112 - 09 Dec 2019
Abstract
Epoxy–boron nitride composites are promising insulating materials, and it is highly important to understand their insulating performances at different temperatures with different nano-doping amounts. In this study, we investigated the effects of different mass fractions of epoxy–micron hexagonal boron nitride composites on their [...] Read more.
Epoxy–boron nitride composites are promising insulating materials, and it is highly important to understand their insulating performances at different temperatures with different nano-doping amounts. In this study, we investigated the effects of different mass fractions of epoxy–micron hexagonal boron nitride composites on their thermal conductivity, as well as the effects of temperature and mass fraction on their insulating performances. The results demonstrated that the thermal conductivity of epoxy–micron hexagonal boron nitride composites was superior to that of neat epoxy. The thermal conductivity of epoxy–micron hexagonal boron nitride composites increased with the mass fraction of hexagonal boron nitride, and their dielectric constant and dielectric loss increased with temperature. The dielectric constant of epoxy–micron hexagonal boron nitride composites decreased as the mass fraction of hexagonal boron nitride increased, while their dielectric losses decreased and then increased as the mass fraction of hexagonal boron nitride increased. Due to internal heat accumulation, the alternating current breakdown strength of epoxy–micron hexagonal boron nitride composites increased and then decreased as the mass fraction of hexagonal boron nitride increased. Additionally, as the temperature increased, the composites transitioned from the glassy state to the rubbery or viscous state, and the breakdown strength significantly degraded. Full article
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