Catalytic polymer self-cleavage for CO2 generation before combustion empowers materials with fire safety

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Март 28, 2024

Abstract Polymeric materials, rich in carbon, hydrogen, and oxygen elements, present substantial fire hazards to both human life property due their intrinsic flammability. Overcoming this challenge the absence of any flame-retardant elements is a daunting task. Herein, we introduce an innovative strategy employing catalytic polymer auto-pyrolysis before combustion proactively release CO 2 , akin possessing responsive extinguishing mechanisms. We demonstrate that potassium salts with strong nucleophilicity (such as formate/malate) can transform conventional polyurethane foam into materials safety through rearrangement. This transformation results rapid generation volume occurring onset intense decomposition, effectively fires. The inclusion just 1.05 wt% formate significantly raise limiting index 26.5%, increase time ignition by 927%, tremendously reduce smoke toxicity 95%. successful application various salts, combined comprehensive examination underlying mechanisms, underscores viability strategy. pioneering approach paves way for efficient eco-friendly development polymeric safety.

Язык: Английский

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A novel phosphorus-modified silica aerogel for simultaneously improvement of flame retardancy, mechanical and thermal insulation properties in rigid polyurethane foam

Chemical Engineering Journal, Год журнала: 2024, Номер 485, С. 149909 - 149909

Опубликована: Фев. 22, 2024

Язык: Английский

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Microcage flame retardants with complete recyclability and durability via reversible interfacial locking engineering

Materials Horizons, Год журнала: 2024, Номер 11(8), С. 1867 - 1876

Опубликована: Янв. 1, 2024

A new facile and scalable interfacial locking engineering strategy is exploited to endow reversible microcages with infinite chemical recyclability starting monomers, exceptional durability, high flame-retardant efficiency, extensive applicability across diverse polymers.

Язык: Английский

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Progress of flame retardant research on flexible polyurethane foam

European Polymer Journal, Год журнала: 2024, Номер unknown, С. 113478 - 113478

Опубликована: Сен. 1, 2024

Язык: Английский

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A four-tier hierarchical architecture for superamphiphobic and flame-retardant fabrics with enhanced self-buoyancy and anti-icing properties

Chemical Engineering Journal, Год журнала: 2024, Номер 488, С. 151084 - 151084

Опубликована: Апрель 8, 2024

Язык: Английский

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Mineralized black phosphorus @ silica nanofiber multi-scale enhanced hydrogel coating for fire protection of polyurethane foams

Chemical Engineering Journal, Год журнала: 2024, Номер 492, С. 152112 - 152112

Опубликована: Май 9, 2024

Язык: Английский

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Production, thermal recycling, and application of cardanol-based polyurethane foam with phenol-carbamate bonds

Chemical Engineering Journal, Год журнала: 2024, Номер 494, С. 152941 - 152941

Опубликована: Июнь 8, 2024

Язык: Английский

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Multiple free-radical-trapping and hydrogen-bonding-enhanced polyurethane foams with long-lasting flame retardancy, aging resistance, and toughness

Materials Horizons, Год журнала: 2024, Номер 11(18), С. 4462 - 4471

Опубликована: Янв. 1, 2024

Flexible polyurethane foam (FPUF) is a ubiquitous material utilized in furniture cushions, mattresses, and various technical applications. Despite the widespread use, FPUF faces challenges maintaining long-lasting flame retardancy aging resistance, particularly harsh environments, while retaining mechanical robustness. Here, we present novel approach to address these issues by enhancing through multiple free-radical-trapping hydrogen-bonding mechanisms. A hindered amine phosphorus-containing polyol (DTAP) was designed chemically introduced into FPUF. The distinctive synergy between structures enables formation of hydrogen bonds with urethane, also effectively capturing free radicals across broad temperature spectrum. As result, incorporating only 5.1 wt% DTAP led successfully passing vertical burning tests witnessing notable enhancements tensile strength, elongation at break, tear strength. Even after enduring accelerated thermal for 168 hours, maintained exceptional properties. This study offers insights enhancement, simultaneously achieving outstanding retardancy, toughness, anti-aging performance.

Язык: Английский

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Ambient-Pressure-Dried Biomass Aerogel toward Robust Cross-Linked Networks and Exceptional Mechanical Performances during Combustion

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(30), С. 11218 - 11230

Опубликована: Июль 3, 2024

Язык: Английский

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Organic solvents-free and ambient-pressure drying melamine formaldehyde resin aerogels with homogeneous structures, outstanding mechanical strength and flame retardancy

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 273, С. 132811 - 132811

Опубликована: Май 31, 2024

Язык: Английский

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