Alkaline potassium aluminum carbonate: A novel high-efficiency dry powder extinguishing agent with high heat-resistant

Zhang, Yi; Wang, Zhixuan; Liu, Junyi; Li, Quanwei; Pan, Renming; Zhou, Xia

doi:10.1016/j.jaap.2023.106038

Cited by 14 publications

(1 citation statement)

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“…Numerous research studies have extensively investigated the thermal properties of fireextinguishing powders, providing insights into various elements, such as melting points, heat capacities, and thermal disintegration [4]. Furthermore, the utilization of calorimetric investigations has contributed valuable insights into the thermodynamic properties of these powders, specifically in relation to their heat of reaction and heat of creation [5,6].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Approach Study on the Thermal and Calorimetric Analysis of Fire-Extinguishing Powders

Huang,

Cao,

2024

Safety

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This study offers a comprehensive evaluation of the effectiveness of expansible graphite (EG) and potassium bicarbonate (KHCO3) in suppressing metal fires, which are known for their high intensity and resistance. Our assessment, utilizing thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM), revealed that compositions of EG–KHCO3 can endure temperatures of up to 350 °C, indicating their thermal resilience. The 3:1 EG–KHCO3 mixture demonstrated exceptional performance in fire suppression tests by extinguishing sodium flames in a mere 20 s, using approximately 50 g of the agent. This highlights a substantial improvement in efficiency. In addition, FTIR analysis identified important gaseous compounds released during decomposition, while XRD and SEM techniques confirmed the advantageous insertion of KHCO3 into the EG matrix, enhancing its resistance to heat and chemical reactions. The mixture with a ratio of 3:1 also demonstrated a higher cooling rate of 2.34 °C/s within the temperature range of 350 to 200 °C. The results emphasize the potential of EG–KHCO3 compositions, specifically in a 3:1 ratio, for efficient fire management by integrating fire suppression, heat resistance, and quick cooling. Subsequent investigations will prioritize the evaluation of these compositions across different circumstances and the assessment of their environmental and industrial viability.

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Section: Introductionmentioning

confidence: 99%