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

Materials Horizons, Journal Year: 2024, Volume and Issue: 11(8), P. 1867 - 1876

Published: Jan. 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.

Language: Английский

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High-Toughness and Intrinsically Self-Healing Cross-Linked Polyurea Elastomers with Dynamic Sextuple H-Bonds

Macromolecules, Journal Year: 2024, Volume and Issue: 57(5), P. 2100 - 2109

Published: Feb. 23, 2024

High-performance elastomers that possess a combination of high mechanical toughness and fast healability have garnered extensive interest because their diverse application potential. Inspired by the unique multiple hydrogen bond (H-bond) structure spider silk rapid dynamic exchange hindered urea bonds (HUBs), self-healing polyurea elastomer with ultrahigh was designed incorporating sextuple H-bonds HUBs into polymer chain. Such design affords stretchability (1586%), excellent (45.53 MJ m–3), good efficiency (91.6%), fracture energy (39.68 kJ m–2), recyclability. The performance are attributed to presence reversibly cross-linked noncovalent dynamically covalent HUBs, which been validated stress relaxation tests. Meanwhile, substituting chain extender adipic dihydrazide hexamethylenediamine, possesses comparable but fewer amide bonds, effect on confirmed. More importantly, when conductive layer graphene oxide applied surface resulting elastomer, exhibited potential applications in strain sensors.

Language: Английский

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A sustainable pore wall strengthening for strong and fire-retardant nanopolymerised wood

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 480, P. 147971 - 147971

Published: Dec. 12, 2023

Language: Английский

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Enhancing flame retardancy, anti‐impact, and corrosive resistance of TPU nanocomposites using surface decoration of α‐ZrP

Polymer Composites, Journal Year: 2024, Volume and Issue: 45(10), P. 9209 - 9223

Published: April 3, 2024

Abstract The development of polyurethane composites with significant flame retardancy and corrosion resistance for widening its practical application is a great importance. In this study, supramolecular wrapped α‐ZrP (MCP@ZrP) was prepared via self‐assembly melamine, cobalt ions (Co 2+ ) phytic acid (PA) on the surfaces α‐zirconium phosphate (α‐ZrP). It found that both compatibility dispersion sheets in thermoplastic (TPU) matrices were improved incorporation organic components TPU/MCP@ZrP nanocomposites. Moreover, their fire‐retardant characteristic significantly enhanced, along effective suppression smoke toxic gas emission. By adding 5 wt% MCP@ZrP, peak heat release rate, total release, production, CO production such nanocomposites reduced by 35.66%, 18.01%, 15.52%, 41.42%, respectively. generation continuous dense char layer benefited from well‐dispersed MCP@ZrP nanohybrids, which resulted tortuous effect to impede diffusion prevent evaporation volatile gasses. means barrier ZrP, composite films also showed anticorrosion performance. Effective interfacial adhesion, achieved combining MCP supermolecules sheets, offers viable approach improve protective properties TPU Highlights Supramolecular‐wrapped strategy. good interface adhesion within matrices. enhanced mechanical performance TPU. preventing evaporation.

Language: Английский

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A flame-retardant, hydrophobic and thermo-responsive multi-functional fabric: Application in fire-alarm device and self-powered system

Composites Communications, Journal Year: 2024, Volume and Issue: 46, P. 101854 - 101854

Published: Feb. 1, 2024

Language: Английский

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Reversible-gel-assisted, ambient-pressure-dried, multifunctional, flame-retardant biomass aerogels with smart high-strength-elasticity transformation

National Science Review, Journal Year: 2024, Volume and Issue: 11(11)

Published: Oct. 15, 2024

ABSTRACT Bio-based aerogels, which are poised as compelling thermal insulators, demand intricate synthesis procedures and have limited durability under harsh conditions. The integration of smart stimuli–response transitions in biomass aerogels holds promise a solution, yet remains challenge. Here, we introduce pioneering strategy that employs reversible-gel-assisted ambient-pressure drying without organic solvents to craft multifunctional bio-based aerogels. By exploiting the thermally reversible gelling propensity select biomasses, anchor emulsified bubbles within cross-linked hydrogels, circumventing surface tension issues during mild drying. resultant feature robust porous matrix is imbued with stable bubbles, yielding low conductivity, high flame retardancy resistance diverse rigors. This innovative approach facilitates paradigm shift intelligent fire protection transition from flexible response water stimuli, effectively shielding against hazards external forces. work opens up facile, eco-friendly way fabricate advanced stimuli-responsive transformation.

Language: Английский

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Flame retardant behavior of bio-based epoxy resin bearing pyridazinone and dynamic ester bond via self-blow-out and vesicular carbon formation

Polymer Degradation and Stability, Journal Year: 2024, Volume and Issue: 222, P. 110707 - 110707

Published: Feb. 21, 2024

Language: Английский

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Construction and mechanism analysis of flame-retardant, energy-storage and transparent bio-based composites based on natural cellulose template

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 263, P. 130317 - 130317

Published: Feb. 21, 2024

Language: Английский

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Biomimetic Nanoporous Transparent Universal Fire-Resistant Coatings

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(15), P. 19519 - 19528

Published: April 5, 2024

The inherent flammability of most polymeric materials poses a significant fire hazard, leading to substantial property damage and loss life. A universal flame-retardant protective coating is considered as promising strategy mitigate such risks; however, simultaneously achieving high transparency the coatings remains great challenge. Here, inspired by moth eye effect, we designed nanoporous structure into that leverages hydrophilic-hydrophobic interactive assembly facilitated phosphoric acid protonated amino siloxane. demonstrates robust adhesion diverse range substrates, including but not limited fabrics, foams, paper, wood. As expected, its moth-eye-inspired conferred visible light >97% water vapor transmittance 96%. synergistic effect among phosphorus (P), nitrogen (N), silicon (Si) largely enhanced char-forming ability restricted decomposition coated which successfully endowed with fire-fighting performance. More importantly, for both flexible rigid samples all possessed mechanical properties. This work provides new insight design coatings, particularly focusing on transparency.

Language: Английский

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Nonconventional phosphorus-based tertiary amine curing agent enabling the high fire safety, outstanding tensile strength and high glass transition temperature of epoxy resin

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159293 - 159293

Published: Jan. 1, 2025

Language: Английский

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