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Open research questions in Flame retardant materials and properties

181 gap statements mined from Flame retardant materials and properties papers in our 7.9M-paper local library, which holds 2,423 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • Lack of a highly efficient flame-retardant hybrid for UPR. Limited understanding of the flame-retardant mechanism of inorganic flame retardants.

    Highly efficient MXene and melamine polyphosphate flame-retardant hybrid for unsaturated polyester resin · 2026 · DOI

  • The lack of effective flame retardants for PLA. The need for a strategy to enhance interfacial contact between g-C3N4 and fumed silica. The requirement for a regulated char formation and thermal decomposition mechanism.

    G-C3N4-Orchestrated Multi-Component Synergy for Enhanced Flame Retardancy in PLA · 2026 · DOI

  • The need for novel and environmentally friendly flame-retardant epoxy resin coatings. The lack of effective flame-retardant modifications for epoxy resin. The need for coatings with enhanced thermal insulation performance.

    Synergistic SiO2@DPPA flame retardancy for enhancing flame retardancy and thermal insulation in epoxy resin · 2026 · DOI

  • The need for more effective flame-retardant strategies for fiber-reinforced polymer composites. The challenge of balancing flame retardancy, mechanical performance, and environmental friendliness. The lack of understanding of the mechanisms and synergistic effects of different flame-retardant modification strategies.

    Flame-Retardant Fiber-Reinforced Composites: Advances and Prospects in Multi-Performance Synergy · 2025 · DOI

  • The lack of sustainable thermal insulation materials with improved fire safety. The need to incorporate industrial waste into epoxy composites. The gap in developing fire-safe foamed epoxy composites using technogenic waste from ceramic brick production.

    Preparation and Characteristics of Fire-Safe Foamed Epoxy Composites Filled with Technogenic Waste from Ceramic Brick Production · 2025 · DOI

  • Despite this drive, flammability characteristics of these sustainable biobased composites are not fully understood.

    Environmentally friendly fire retardant natural fibre composites: A review · 2024 · DOI

  • Long-term durability testing beyond a few laundering cycles is needed to assess the practical viability of both APA and PAB formulations for commercial textile applications.

    Boric Acid Influence on Ammonium Phytate Finish for Eco-Efficient Flame Retardancy of Cuprammonium Fabrics · 2026 · DOI

  • The difficulty in maintaining the processing temperature, which was approximately 40°C. The need to respect the Restriction of Hazardous Substances (RoHS) law, which limits the use of dangerous materials in electronics.

    Design and Development of Fire-Resistant Composites with Fire-Retardant Fillers for Electrical Applications · 2026 · DOI

  • The lack of effective flame retardants for TPU materials. The need for improved fire-resistance performance of TPU. The limited understanding of the microstructure engineering of core-shell flame retardants.

    Microstructure engineering of core-shell flame retardants: SiO 2 and MXene encapsulated ammonium polyphosphate for fire-safe thermoplastic polyurethane · 2026 · DOI

  • The need to develop effective flame-retardant systems that do not compromise the mechanical properties of epoxy resin. The challenge of achieving a synergistic flame-retardant effect between phosphorus and carbon.

    Synergistic Flame Retardancy of Epoxy Resin with Aminated Multi-Walled Carbon Nanotubes and Ammonium Polyphosphate · 2026 · DOI

  • The lack of effective flame-retardant systems for epoxy resin. The need for halogen-free flame retardants due to environmental and health concerns. The potential of phosphorus-based flame retardants as an alternative to conventional halogenated flame retardants.

    Synergistic Flame Retardancy of Epoxy Resin with Aminated Multi-Walled Carbon Nanotubes and Ammonium Polyphosphate · 2026 · DOI

  • The lack of understanding of the effect of alumina nanoparticles on the flame retardancy and thermal stability of CFRP composites. The need to improve the thermal stability and flame-retardant properties of CFRP composites.

    Microwave-cured CFRP composites with alumina: enhanced flame retardancy and thermal stability · 2026 · DOI

  • Further studies can be conducted to evaluate the flame-retardant power of the synthesized nickel fluoroborate on cotton in detail. The use of RSM for optimization can be applied to other chemical synthesis studies.

    RSM-driven synthesis of nickel fluoroborate and its flame-retardant power on cotton · 2026 · DOI

  • There is a need for the development of novel synthesis methods for nickel fluoroborate. There is a lack of studies on the optimization of synthesis conditions for nickel fluoroborate using RSM.

    RSM-driven synthesis of nickel fluoroborate and its flame-retardant power on cotton · 2026 · DOI

  • The lack of standardization in the certification and assessment of flame retardants. The need for annual monitoring of fire retardant coatings.

    Changing the Effectiveness of Wood-Based Flame Retardants Under Actual Operating Conditions · 2026 · DOI

  • The current certification and assessment system for flame retardants does not account for real-world conditions. There is a lack of understanding of the performance of flame retardants under actual operating conditions.

    Changing the Effectiveness of Wood-Based Flame Retardants Under Actual Operating Conditions · 2026 · DOI

  • Future developments are expected to focus on hybrid multifunctional biocomposites that simultaneously deliver fire resistance, protection, and sustainability. The review suggests the need for further research on the use of nanomaterials and flame retardants to improve fire performance. The development of sustainable fire-resistant biocomposites can improve the safety and performance of military systems.

    Sustainable Fire-Resistant Biocomposites in the Military Industry: Performance, Challenges, and Opportunities · 2026 · DOI

  • The review highlights the need for further research on the development of sustainable fire-resistant biocomposites for military applications. There is a lack of understanding of the long-term durability and moisture sensitivity of biocomposites. The review identifies the need for standardized evaluation methods to assess fire performance in military materials.

    Sustainable Fire-Resistant Biocomposites in the Military Industry: Performance, Challenges, and Opportunities · 2026 · DOI

  • The inherent flammability of PLA limits its application in engineering fields. Prior flame-retardant systems often require high loadings and compromise mechanical properties.

    Synergistic flame retardancy and smoke suppression in poly(lactic acid) using phytic-acid-modified alginate and ammonium polyphosphate · 2026 · DOI

  • Investigating the effects of different gCNFS loadings on the flame retardancy of PLA/APP/lignin composites. Exploring the long-term stability and durability of the pre-assembled gCNFS in PLA/APP/lignin composites. Developing new flame-retardant systems with improved efficiency and sustainability.

    G-C3N4-Orchestrated Multi-Component Synergy for Enhanced Flame Retardancy in PLA · 2026 · DOI

  • The study only investigated the effects of silane modification on APP dispersion and mechanical properties, - The sample size was limited to five tests per group, - The study did not explore the effects of other factors on the properties of PLA…

    Effect of Silane-Modified Ammonium Polyphosphate on the Mechanical, Thermal, and Flame-Retardant Properties of Rice Husk/Polylactic Acid Composites · 2025 · DOI

  • Further development of advanced fire-resistant materials. Investigation of newer approaches such as hydrogels and HAP textiles. Evaluation of the long-term durability and effectiveness of these materials.

    Advanced Fire-Resistant Materials for Future Construction · 2026 · DOI

  • The exploration of new fire-retardant fillers and their applications in electrical equipment. The development of more efficient and reliable electrical components and systems using fire-resistant composites.

    Design and Development of Fire-Resistant Composites with Fire-Retardant Fillers for Electrical Applications · 2026 · DOI

  • Investigating the long-term stability and durability of the PAPP/MBW system, - Exploring the potential applications of the PAPP/MBW system in various engineering…

    Synergistic Effect of Magnesium Borate Whiskers on Antidripping and Fire Resistance of Intumescent Flame Retardant Polypropylene Composites · 2026 · DOI

  • Investigating the long-term stability of the composite. Exploring the potential applications of the composite in various industries. Developing new flame retardants with improved performance.

    Microstructure engineering of core-shell flame retardants: SiO 2 and MXene encapsulated ammonium polyphosphate for fire-safe thermoplastic polyurethane · 2026 · DOI

Most-cited papers in Flame retardant materials and properties

Most recent work

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Open questions raised by papers listed on this page include: (1) The lack of effective flame-retardant modifications for epoxy resin (“Synergistic SiO2@DPPA flame retardancy for enhancing flame retardancy and…”, 2026); (2) Long-term durability testing beyond a few laundering cycles is needed to assess the practical viability of both APA and PAB formulations for commercial textile applications (“Boric Acid Influence on Ammonium Phytate Finish for Eco-Efficient Flame…”, 2026); (3) The lack of effective flame-retardant systems for epoxy resin (“Synergistic Flame Retardancy of Epoxy Resin with Aminated Multi-Walled Carbon…”, 2026); (4) The lack of understanding of the effect of alumina nanoparticles on the flame retardancy and thermal stability of CFRP composites (“Microwave-cured CFRP composites with alumina: enhanced flame retardancy and…”, 2026); (5) There is a need for the development of novel synthesis methods for nickel fluoroborate (“RSM-driven synthesis of nickel fluoroborate and its flame-retardant power on…”, 2026). 181 gap statements have been mined from Flame retardant materials and properties papers in our 7.9M-paper local library, which holds 2,423 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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