Bio‐modified pyrotechnic composite materials for firefighting application

Pathak, Tribhuvan Kumar; Sharma, Vandana; Jassal, Pyar Singh; Singh, R. P.; Johar, Rajni

doi:10.1002/fam.3060

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…However, conventional hydrogels suffer from poor fluidity [ 14 ], hindering their penetration capacity and sprayability, resulting in incomplete coverage of ignition points and challenging residue disposal. With advancements in material science, the exploration of novel firefighting materials has gained traction [ 15 , 16 ]. Temperature-sensitive hydrogels, characterized by reversible sol-gel phase transitions in response to temperature changes [ 17 , 18 , 19 ], offer promising solutions for forest fire management.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Chitosan/Hydroxypropyl Methylcellulose Temperature-Sensitive Hydrogel Containing Inorganic Salts for Forest Fire Suppression

Gao,

Zhao,

Wang

2024

Gels

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Effective forest fire suppression remains a critical challenge, necessitating innovative solutions. Temperature-sensitive hydrogels represent a promising avenue in this endeavor. Traditional firefighting methods often struggle to address forest fires efficiently while mitigating ecological harm and optimizing resource utilization. In this study, a novel intelligent temperature-sensitive hydrogel was prepared specially for forest fire extinguishment. Utilizing a one-pot synthesis approach, this material demonstrates exceptional fluidity at ambient temperatures, facilitating convenient application and transport. Upon exposure to elevated temperatures, it undergoes a phase transition to form a solid, barrier-like structure essential for containing forest fires. The incorporation of environmentally friendly phosphorus salts into the chitosan/hydroxypropyl methylcellulose gel system enhances the formation of temperature-sensitive hydrogels, thereby enhancing their structural integrity and firefighting efficacy. Morphological and thermal stability analyses elucidate the outstanding performance, with the hydrogel forming a dense carbonized layer that acts as a robust barrier against the spread of forest fires. Additionally, comprehensive evaluations employing rheological tests, cone calorimeter tests, a swelling test, and infrared thermography reveal the multifaceted roles of temperature-sensitive hydrogels in forest fire prevention and suppression strategies.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Chitosan/Hydroxypropyl Methylcellulose Temperature-Sensitive Hydrogel Containing Inorganic Salts for Forest Fire Suppression

Gao,

Zhao,

Wang

2024

Gels

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Inhibition effect on gas explosion of NCM pouch cell during thermal runaway by a novel efficient and economical aerosol explosion suppression agent

Wang,

Zhang

et al. 2024

Process Safety and Environmental Protection

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Optimization of preparation techniques for high-temperature resistant waterborne phenolic-epoxy resin emulsion under low carbon background

Lu,

Gu,

Yuan

et al. 2024

Front. Mater.

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In light of escalating global climate change concerns and the pressing need to address industries with high carbon emissions and pollution, enhancing the preparation of phenol-formaldehyde epoxy resins has emerged as a critical research focus. This study seeks to fabricate waterborne phenol-formaldehyde epoxy resins with superior performance by investigating pivotal factors influencing their properties and refining preparation methods. Utilizing tetrabutylammonium bromide as a phase transfer catalyst, the phenol-formaldehyde epoxy resins are synthesized via a two-step alkalization process. Subsequent etherification reactions involve modifying the phenol-formaldehyde epoxy resins using cationic modifier diethanolamine (DEA) and anionic modifier sodium p-amino benzenesulfonate, resulting in waterborne phenol-formaldehyde epoxy resins. Subsequently, in situ synthesis is employed to produce nanoscale silica (SiO2) modified waterborne phenol-formaldehyde epoxy resins. The findings reveal that when the ratio of n1 to n2 falls within the range of 1/3.25 to 1/3, the emulsion displays a moderate particle size and maintains stable storage. Furthermore, an increase in DEA dosage leads to a particle size of less than 324 nm when the ratio of n1 to n2 exceeds 1/3, indicating stability. Moreover, optimal stability and prolonged storage lifespan are achieved when the nano SiO2 content is approximately 1.5%. This study contributes by synthesizing high-quality waterborne phenol-formaldehyde epoxy resin emulsions through optimized methods. The research findings offer a theoretical foundation for this domain and support the practical application of low-carbon and environmentally friendly concepts in the coatings industry.

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Bio‐modified pyrotechnic composite materials for firefighting application

Abstract: The traditional aerosol-forming composites are a mixture of potassium nitrate/ chlorate and synthetic resins like phenol-formaldehyde, melamine-formaldehyde, polyurethane, and epoxy resin. Though these synthetic organic resins have excellent

Cited by 3 publications

References 24 publications

Preparation and Characterization of Chitosan/Hydroxypropyl Methylcellulose Temperature-Sensitive Hydrogel Containing Inorganic Salts for Forest Fire Suppression

Preparation and Characterization of Chitosan/Hydroxypropyl Methylcellulose Temperature-Sensitive Hydrogel Containing Inorganic Salts for Forest Fire Suppression

Inhibition effect on gas explosion of NCM pouch cell during thermal runaway by a novel efficient and economical aerosol explosion suppression agent

Optimization of preparation techniques for high-temperature resistant waterborne phenolic-epoxy resin emulsion under low carbon background

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