Development and characterization of fluorosilane-modified expandable graphite for fire suppression.
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| Title: | Development and characterization of fluorosilane-modified expandable graphite for fire suppression. |
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| Authors: | Ma, Xin-Yue1 (AUTHOR), Cao, Fang-Chao1 (AUTHOR), Tang, Yan1 (AUTHOR), Jiang, Jun-Cheng1,2 (AUTHOR) jiangjc@cczu.edu.cn, Huang, An-Chi1 (AUTHOR) huangac@cczu.edu.cn |
| Source: | Journal of Thermal Analysis & Calorimetry. Jun2025, Vol. 150 Issue 11, p8489-8500. 12p. |
| Subjects: | Firefighting, Fire testing, Surface properties, Fluoroalkyl compounds, Fire prevention, Graphite composites, Hydrophobic compounds |
| Abstract: | In this paper, a modified material EG-PR with hydrophobic and oleophobic properties was successfully prepared with expanded graphite (EG) as the main raw material and 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (PR) and silane coupler KH-570 (KH) as surface modifiers. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy verified the effective modification that produced a Si‒O‒Si network structure. The water contact angle (WCA) of 127° and oil contact angle (OCA) of 110° of EG-PR, unmodified EG-IA, were 92° and 20°, respectively. Fire-extinguishing tests conducted on heptane pool fire showed that EG-PR decreased the time required to extinguish the fires by 23 s, consumed less extinguishing agent, and suppressed the production of carbon dioxide during combustion compared to EG-IA, indicating its higher effectiveness. EG-PR demonstrated rapid fire-extinguishing capabilities during the experiments. It effectively extinguished the flames, created a protective layer on the oil pool's surface, efficiently isolated heat and oxygen, and effectively suppressed flame propagation on the surface. This study highlights the potential of surface-modified expandable graphite in enhancing fire safety applications. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | In this paper, a modified material EG-PR with hydrophobic and oleophobic properties was successfully prepared with expanded graphite (EG) as the main raw material and 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (PR) and silane coupler KH-570 (KH) as surface modifiers. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy verified the effective modification that produced a Si‒O‒Si network structure. The water contact angle (WCA) of 127° and oil contact angle (OCA) of 110° of EG-PR, unmodified EG-IA, were 92° and 20°, respectively. Fire-extinguishing tests conducted on heptane pool fire showed that EG-PR decreased the time required to extinguish the fires by 23 s, consumed less extinguishing agent, and suppressed the production of carbon dioxide during combustion compared to EG-IA, indicating its higher effectiveness. EG-PR demonstrated rapid fire-extinguishing capabilities during the experiments. It effectively extinguished the flames, created a protective layer on the oil pool's surface, efficiently isolated heat and oxygen, and effectively suppressed flame propagation on the surface. This study highlights the potential of surface-modified expandable graphite in enhancing fire safety applications. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 13886150 |
| DOI: | 10.1007/s10973-024-13642-2 |
