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Sustainable Mineral-Bio Hybrid Gel Based on Peach Gum for improving Fire-Resistant Performance
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DOI：10.1002/adsu.70550.png)
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Abstract
En 中文
Wildfire propagation poses critical threats to global ecosystems and infrastructure, driving the need for eco-friendly flame-retardant gels. This study reports a sustainable bio-based gel (PG/SiO2@HY) utilizing natural peach gum (PG) as a carbon precursor, halloysite nanotubes (HY) as an inorganic phase, and SiO2 as a synergistic agent. Under the tested conditions, the gel improves thermal shielding and flame suppression. Specifically, the time to ignition for treated substrates increases from 4 s to 92 s. Cone calorimetry reveals that the gel reduces the peak heat release rate and total heat release by 88.8% and 50.0%, respectively. In simulated cabin fire tests, the gel maintains rear-surface temperatures at a mere 36.2°C, a dramatic reduction from the 721°C observed in untreated groups. In a pine needle-bed fire-spread test, the gel helps block flame propagation and forms an effective fire-isolation barrier. These improvements are associated with a synergistic ceramic–carbon protective layer that limits heat transfer and oxygen diffusion. This study suggests a mineral-assisted bio-based design strategy for wildfire-related fire protection.
Keywords:
bio-based fire-retardant gel
halloysite nanotubes
wildfire
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6.1
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1.8K
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5.7K
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