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Polymers
Special Issues
Fire Safety of Polymers
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Fire Safety of Polymers

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Physics and Theory".

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 4672

Special Issue Editors

Prof. Dr. Jozef Martinka

E-Mail Website
Guest Editor
Institute of Integrated Safety, Faculty of Materials Science and Technology in Trnava, Slovak University of Technology in Bratislava, Jana Bottu 2781/25, 917 24 Trnava, Slovakia
Interests: polymeric materials; polymer composites; thermal stability; fire safety
Special Issues, Collections and Topics in MDPI journals
Dr. Karla Barčová

E-Mail Website
Guest Editor
Faculty of Safety Engineering, Technical University of Ostrava, Ostrava, Czech Republic
Interests: physics of condensed matter; energetic materials; ballistics; applied physics

Special Issue Information

Dear Colleagues,

The fire safety and thermal resistance of polymers is one of the most limiting aspects of polymers, and plastics application on a wider scale. Thus, this Special Issue will focus on all aspects regarding the fire safety and thermal stability of polymers.

In particular, we encourage the submission of papers that discuss the most recent research in the following fields: production of thermal-resistant polymers, new and “green” flame retardants for polymers, progressive technologies for fire retardants for polymer applications, new progressive methods for fire testing of polymers, new technologies for polymer modification, and original methods for polymer protection (against high temperature and/or other external conditions, e.g., UV radiation).

We are particularly interested in studies aimed at new polymers (flame retardants) for electrical cables and construction products and the progressive application of thermal analysis methods (TG and DSC) for the prediction of the thermal stability of polymers.

Dr. Jozef Martinka
Dr. Karla Barčová
Guest Editors

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. Polymers 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 2700 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

  • Fire hazards of polymers
  • Fire safety of polymers for construction products
  • Fire testing of polymers
  • Flame retardation of polymers
  • Green flame retardants for polymers
  • Polymers for electrical cables
  • Prediction of reaction to fire class of polymers
  • Thermal analysis in polymer stability prediction
  • Thermal degradation of polymers
  • Thermal-resistant polymers

Published Papers (2 papers)

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Research

15 pages, 4157 KiB  
Article
Experimental and Numerical Study of Downward Flame Spread over Glass-Fiber-Reinforced Epoxy Resin
by Oleg Korobeinichev, Alexander Karpov, Artem Shaklein, Alexander Paletsky, Anatoliy Chernov, Stanislav Trubachev, Roman Glaznev, Andrey Shmakov and Sergey Barbot’ko
Polymers 2022, 14(5), 911; https://0-doi-org.brum.beds.ac.uk/10.3390/polym14050911 - 24 Feb 2022
Cited by 6 | Viewed by 1676
Abstract
For the first time, a comprehensive study of downward flame spread over glass-fiber-reinforced epoxy resin (GFRER) slabs in oxidizer flow has been carried out experimentally and numerically. Microthermocouples were used to measure the temperature profiles on the solid fuel’s surface and in the [...] Read more.
For the first time, a comprehensive study of downward flame spread over glass-fiber-reinforced epoxy resin (GFRER) slabs in oxidizer flow has been carried out experimentally and numerically. Microthermocouples were used to measure the temperature profiles on the solid fuel’s surface and in the flame, and a video camera was used to measure the rate of flame spread (ROS). The ROS was found to be linearly dependent on the oxygen concentration, to be inversely proportional to the slab thickness and not to depend on the direction of the flame spread over the slab. The absence of the influence of the forced oxidizing flow velocity and the weak influence of the GFRER pyrolysis kinetics on the ROS were observed. For the first time, a numerical model of flame spread over reinforced material with thermal conductivity anisotropy was developed on the basis of a coupled ‘gas–solid’ heat and mass transfer model, using modifications of the OpenFOAM open-source code. The sensitivity analysis of the model showed that the thermal conductivity in the normal direction to the GFRER surface had a much greater effect on the ROS than the thermal conductivity along the direction of flame propagation. The numerical results show good agreement with the experimental data on the dependences of the ROS on oxygen concentration, slab thickness and the N2/O2 mixture flow velocity, as well as temperature distributions on the fuel surface, the maximum flame temperatures and the flame zone length. Full article
(This article belongs to the Special Issue Fire Safety of Polymers)
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15 pages, 3892 KiB  
Article
Halloysite Nanotubes and Silane-Treated Alumina Trihydrate Hybrid Flame Retardant System for High-Performance Cable Insulation
by Sandra Paszkiewicz, Izabela Irska, Iman Taraghi, Elżbieta Piesowicz, Jakub Sieminski, Karolina Zawisza, Krzysztof Pypeć, Renata Dobrzynska, Agnieszka Terelak-Tymczyna, Kamil Stateczny and Bartłomiej Szymczak
Polymers 2021, 13(13), 2134; https://0-doi-org.brum.beds.ac.uk/10.3390/polym13132134 - 29 Jun 2021
Cited by 14 | Viewed by 2252
Abstract
The effect of the presence of halloysite nanotubes (HNTs) and silane-treated alumina trihydrate (ATH-sil) nanofillers on the mechanical, thermal, and flame retardancy properties of ethylene-vinyl acetate (EVA) copolymer/low-density polyethylene (LDPE) blends was investigated. Different weight percentages of HNT and ATH-sil nanoparticles, as well [...] Read more.
The effect of the presence of halloysite nanotubes (HNTs) and silane-treated alumina trihydrate (ATH-sil) nanofillers on the mechanical, thermal, and flame retardancy properties of ethylene-vinyl acetate (EVA) copolymer/low-density polyethylene (LDPE) blends was investigated. Different weight percentages of HNT and ATH-sil nanoparticles, as well as the hybrid system of those nanofillers, were melt mixed with the polymer blend (reference sample) using a twin-screw extruder. The morphology of the nanoparticles and polymer compositions was studied using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The mechanical properties, hardness, water absorption, and melt flow index (MFI) of the compositions were assessed. The tensile strength increases as a function of the amount of HNT nanofiller; however, the elongation at break decreases. In the case of the hybrid system of nanofillers, the compositions showed superior mechanical properties. The thermal properties of the reference sample and those of the corresponding sample with nanofiller blends were studied using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Two peaks were observed in the melting and crystallization temperatures. This shows that the EVA/LDPE is an immiscible polymer blend. The thermal stability of the blends was improved by the presence of HNTs and ATH-sil nanoparticles. Thermal degradation temperatures were shifted to higher values by the presence of hybrid nanofillers. Finally, the flammability of the compositions was assessed. Flammability as reflected by the limiting oxygen index (OI) was increased by the presence of HNT and ATH-sil nanofiller and a hybrid system of the nanoparticles. Full article
(This article belongs to the Special Issue Fire Safety of Polymers)
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