Waterborne Intumescent Fire-Retardant Polymer Composite Coatings: A Review

Polymers, Journal Year: 2024, Volume and Issue: 16(16), P. 2353 - 2353

Published: Aug. 20, 2024

Intumescent fire-retardant coatings, which feature thinner layers and good decorative effects while significantly reducing heat transfer air dispersion capabilities, are highly attractive for fire safety applications due to their effective prevention of material combustion protection materials. Particularly, the worldwide demand improved environmental requirements has given rise production waterborne intumescent polymer composite comparable or provide more advantages than solvent-based coatings in terms low cost, reduced odor, minimal health hazards. However, there is still a lack comprehensive in-depth overview coatings. This review aims systematically comprehensively discuss composition, flame retardant insulation mechanisms, practical Finally, some key challenges associated with highlighted, following future perspectives opportunities proposed.

Language: Английский

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In‐Depth Study of the Synergistic Flame Retardant Mechanism of Montmorillonite and IFR/SBS Composites by Real‐Time Detection of Charcoal Layer Resistance

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

ABSTRACT The inability to observe the evolution of char layer morphology during combustion process hinders an in‐depth understanding synergistic flame‐retardant mechanism between montmorillonite and expandable flame retardants (IFR). In this study, a novel device for real‐time detection resistance was used explore retardant mechanisms (MMT) organically modified (OMMT) in combination with IFR styrene‐butadiene‐styrene (SBS) matrix. Thermogravimetric analysis, IR spectroscopy, x‐ray diffraction tests indicate that both MMT OMMT can promote generation crosslinked structures layer, improving thermal stability char. Additionally, combining scanning electron microscopy (SEM), it found enhances expansion continuity whereas leads rupture process, which affects its performance. This study shows effect is superior MMT, mainly because better distributed SBS matrix, increasing viscosity inhibiting gas escape, promoting layer.

Language: Английский

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Ionic Liquid Capsules as Flame-Retardant Additives for Emulsion Paint Systems

Polymers, Journal Year: 2025, Volume and Issue: 17(5), P. 626 - 626

Published: Feb. 26, 2025

To develop a highly efficient and environmentally friendly flame-retardant system, ionic liquids (ILs) have recently emerged as promising candidates. However, the addition of ILs into emulsion paint disrupts stability, leading to rapid demulsification due electrostatic effects. Herein, IL-silica capsules were developed using soft-template method. These can be directly added an acrylic system additives. Incorporating 5 wt% coating it on fabric reduced flammability by 53% compared untreated fabric. This work provides novel practical approach enhance flame retardancy in systems without compromising their stability.

Language: Английский

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Phosphorus-Nitrogen Compounds: Part 79. Design and synthesis of spiro-bino-spiro (sbs)-bis (tetraalkylaminocyclotriphosphazenes) and novel twenty-membered bis(dichlorocyclotriphos-phaza)macrocycles: Structural analysis, chirality and bioactivity studies

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 141926 - 141926

Published: March 1, 2025

Language: Английский

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Enhancement of flame retardancy in ceramic polymer composite materials with ammonium polyphosphate/melamine cyanurate

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: 141(41)

Published: Aug. 5, 2024

Abstract To enhance the flame‐retardant characteristics of ceramifiable polyethylene (PE) composites, a composite flame retardant comprising ammonium polyphosphate (APP) and melamine cyanurate (MCA) was integrated. This addition markedly bolstered their attributes. A meticulous exploration conducted to ascertain impacts APP MCA on PE composites' visible morphology, mechanical robustness, dimensional constancy, study phase transition microstructure deformation during sintering. Findings underscored that amalgamation APP/MCA enhanced resistance these registering limiting oxygen index 25.6% achieving vertical burning test (UL‐94) rating V‐0. The collaborative action significantly composites while effectively mitigating composite's propensity drip. Upon detailed analysis, eutectic reaction observed between wollastonite fiber, culminating in genesis novel crystalline phase, calcium pyrophosphate (Ca 2 P O 7 ). When subjected elevated temperatures, glass–ceramics manifest with both vitreous phases. proportion plays pivotal role influencing ceramic's overall performance.

Language: Английский

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Crystallinity of Halogen-Free Flame-Retardant Polyolefin Compounds Loaded with Natural Magnesium Hydroxide

Eng—Advances in Engineering, Journal Year: 2024, Volume and Issue: 5(3), P. 2050 - 2066

Published: Sept. 1, 2024

A typical halogen-free flame-retardant (HFFR) formulation for electric cables may contain polymers, various additives, and fire-retardant fillers. In this study, composites are prepared by mixing natural magnesium hydroxide (n-MDH) with linear low-density polyethylene (LLDPE) a few types of ethylene–octene copolymers (C8-POE). Depending on the content LLDPE C8-POE, we obtained different crystallinities that affected final mechanical properties. The nucleation effect n-MDH variations in crystallinity caused blending C8-POE/LLDPE/n-MDH were investigated. Notably, C8-POE/LLDPE blend, found decrease crystallization temperature LLPDE compared to pure an increase C8-POE C8-POE. On contrary, addition led LLDPE. As expected, polyolefin matrix higher elastic modulus, tensile strength, lower elongation at break. It has been observed also influences fire performance. Overall, these results show how obtain required features compounds cable applications, depending quantities two miscible components blend.

Language: Английский

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Fabrication of High-Performance Asphalt Mixture Using Waterborne Epoxy-Acrylate Resin Modified Emulsified Asphalt (WEREA)

Polymers, Journal Year: 2024, Volume and Issue: 16(19), P. 2743 - 2743

Published: Sept. 27, 2024

Existing research shows that using waterborne epoxy resin (WER) instead of emulsified asphalt as the binder for cold mix (CMA) can enhance rutting resistance, high-temperature performance, fracture and early performance CMA. In order to eliminate potential drawbacks such insufficient strength low-temperature CMA during application, a novel method was proposed in this study preparation epoxy-acrylate (WER), specifically tailored modify asphalt, resulting (WEREA). The modification effect WER on evaluated through rheological tests direct tensile tests. A modified design based conventional Marshall determine optimal proportions, including key parameters specimen compaction curing. results revealed incorporation led substantial improvement complex shear modulus concurrent decrease phase angle. When temperature exceeded 60 °C, angle exhibited diminishing trend, indicative reduced viscosity temperatures escalated. As content increased, strain rate observed, accompanied by elevation strength. At various stress levels, WEREA decreases with increased WER, indicating hardness improve its deformation resistance. from MSCR indicate could significantly elasticity transitioning it viscoelastic material an elastic material, thereby improving resistance rutting, performance. fatigue life are consistent those amplitude sweep, both reflecting WER. This indicates has significant asphalt. Furthermore, further confirmed advantages mixtures. mixture follows: double-sided 50 times each, aging at °C 48 h, moisture 5.14%, cement 2.5%, emulsion 8.4%. proportions identified these yielded mixtures improved stability, flow value, enhanced compared hot-mix (HMA) AC-16. These findings suggest durability longevity pavements. For future applications, be explored use producing recycled addition designing according AC-16 gradation, consideration also given gradation smaller nominal maximum aggregate size application surface layer or ultra-thin wearing course.

Language: Английский

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Study on the Pyrolysis and Fire Extinguishing Performance of High-Temperature-Resistant Ultrafine Dry Powder Fire Extinguishing Agents for Aviation Applications

Molecules, Journal Year: 2024, Volume and Issue: 29(15), P. 3500 - 3500

Published: July 26, 2024

Ultrafine KAl(OH)

Language: Английский

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High Modulus Epoxy/GO-PANI Self-Healing Materials Without Catalyst by Molecular Engineering and Nanocomposite Fabrication

Polymers, Journal Year: 2024, Volume and Issue: 16(22), P. 3173 - 3173

Published: Nov. 14, 2024

Nowadays, self-healing materials have been studied actively in electronics, soft robotics, aerospace, and automobiles because they can prolong the life span of materials. However, overcoming trade-off relationship between mechanical properties performance is challenging. Herein, graphene oxide-polyaniline (GO-PANI) filler was introduced to overcome this challenge GO has a highly excellent modulus, nitrogen atoms PANI endow ability through hydrogen bonds. Aside from bond PANI, carbonyl group disulfide exchange epoxy matrix also helped heal efficiently. Therefore, modulus SV-GPN1 (Self-healing Vitrimer-GO-PANI1) reached 770 MPa, 65.0% healing efficiency demonstrated. The were enhanced after adding GO-PANI filler. ability, however, deteriorated when more it hindered collision molecules. Meanwhile, reproducibility, which proven by experiment that 16.50 mm thick displayed ability. Thus, be applied structural industries like aerospace its reproducibility.

Language: Английский

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Development and Characterization of Thermal Protection Gels for Steel Pipelines Transporting Combustible Materials

Fire, Journal Year: 2024, Volume and Issue: 7(11), P. 382 - 382

Published: Oct. 26, 2024

Due to low costs, pipelines are commonly used for transporting hazardous substances such as combustible liquids and gasses. Currently, chemical industrial parks gas production stations have dense pipeline networks. In the case of a leakage subsequent fire accident, adjacent could be directly impinged by flame or engulfed in hot smoke, with potential result chain accidents catastrophic consequences. It is thus practical importance develop an efficient thermal protection material pipelines. this study, new type bio-based gel was prepared protection, using guar gum (GG) gelling agent, sodium tetraborate (B) crosslinking agent magnesium chloride (MgCl2) retardant. Firstly, orthogonal experiments were conducted examine time determine optimal formulations that meet requirements. Subsequently, water retention, stability microstructure these analyzed. Finally, performance evaluated under direct impingement flames high-temperature smoke. The results indicated best achieved formulation GG, B MgCl2 mass fractions 2.5, 0.6 0.5 wt%, respectively. This also exhibited retention capacity stability. experiments, effective times 216 s (for 90 mm diameter) 312 120 lower part impingement. Under smoke impingement, showed excellent performance. These research findings can provide important foundation further development materials conditions.

Language: Английский

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