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Molecules
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Flame-Retardant Composites: Preparation, Characterization and Properties
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Flame-Retardant Composites: Preparation, Characterization and Properties

A Special Issue of Molecules (ISSN 1420-3049) belonging to the section "Materials Chemistry".

Deadline for manuscript submissions: 30 April 2027 | Viewed by 245

Editors

Dr. Zunbin Duan

E-Mail Website
Guest Editor
National Engineering Research Center for Colloidal Materials and School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
Interests: flame retardant; polymer; separation engineering; energy storage
Dr. Rui Li

E-Mail Website
Guest Editor
Beijing Key Laboratory for Green Catalysis and Separation, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
Interests: flame retardant; MOFs; COF; CO2 photoreduction; environment; pollutants capture

Special Issue Information

Dear Colleagues,

Flame-retardant composites are critical in modern industries, as they play an essential role in enhancing the safety, durability, and sustainability of materials. These composites not only prevent the spread of fire but also contribute to the development of advanced materials with unique properties, offering improved thermal stability and fire resistance. This Special Issue focuses on the preparation, characterization, and properties of flame-retardant composites, with an emphasis on innovative materials and cutting-edge technologies. Contributions that explore new formulations, novel flame-retardant mechanisms, and advanced applications in various sectors such as energy storage, aerospace, automotive, and construction are welcome to be submitted to this Special Issue. Studies that put particular emphasis on the rational design of flame-retardant inorganic and organic molecules, as well as their composites or hybrids, which offer tailored fire-resistance and thermal stability, are especially welcome. This Special Issue aims to highlight the synergy between material science, chemical engineering, and safety technology, shedding light on how flame-retardant systems can address real-world challenges. We encourage the submission of research that integrates both fundamental insights and practical applications, focusing on environmentally sustainable materials that can contribute to the creation of a safer and more sustainable future.

Dr. Zunbin Duan
Dr. Rui Li
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules 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

  • flame-retardant molecules
  • flame-retardant composites
  • nanomaterials
  • fire safety technology
  • polymer engineering

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Published Papers (1 paper)

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Research

18 pages, 5531 KB  
Article
The Effects of Sodium Antimonate on the Flame Retardancy and Mechanical Properties of Thermoplastic Polyurethane Composites
by Xinchao Wang, Shaobin Cai, Chenhao Xu, Tie Geng, Xiaoli Bai, Jiayu Liao, Tongfei Zhang, Baichuan He, Pengyu He and Mengling Li
Molecules 2026, 31(18), 3200; https://doi.org/10.3390/molecules31183200 - 10 Sep 2026
Abstract
Thermoplastic polyurethane (TPU) is highly versatile yet inherently flammable, restricting its use in fire-safe applications. This study incorporates sodium antimonate (SA) into TPU via melt blending (0–10 wt%). Through a comprehensive suite of analytical techniques—including thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), [...] Read more.
Thermoplastic polyurethane (TPU) is highly versatile yet inherently flammable, restricting its use in fire-safe applications. This study incorporates sodium antimonate (SA) into TPU via melt blending (0–10 wt%). Through a comprehensive suite of analytical techniques—including thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), universal testing, and cone calorimetry—the effects of SA on the various properties of the material were investigated. Quantitative analysis reveals that 10 wt% SA delivers the best flame retardancy, reducing the peak heat release rate by ~50% (from 605 to 310 kW/m2) and total heat release by ~40% (from 32 to 19 MJ/m2), while increasing the char residue from 9.84% to 13.89%. However, to retain mechanical robustness, the SA content must be capped at ≤5 wt%. This ensures that the material retains 30% of its fracture elongation and a tensile strength of 1.7 MPa; higher loadings cause severe embrittlement due to particle agglomeration. Mechanistically, SA acts via a dual-phase mode—promoting a dense insulating char layer in the condensed phase and quenching reactive radicals in the gas phase. These findings establish a practical balance between fire safety and mechanical performance, offering a clear guideline for the rational design of flame-retardant TPU composites. Full article
(This article belongs to the Special Issue Flame-Retardant Composites: Preparation, Characterization and Properties)
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