Fire Extinguishing Efficiency of Magnesium Hydroxide Powders under Different Particle Size

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Author(s)

Detail(s)

Original languageEnglish
Title of host publication2017 8th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE 2017)
EditorsXu-hai Pan, Jing-hong Wang, Hao-wei Yao
Pages447-455
Publication statusPublished - 2018

Publication series

NameProcedia Engineering
PublisherElsevier BV
Volume211
ISSN (Print)1877-7058

Conference

Title8th International Conference on Fire Science and Fire Protection Engineering (on the Development of Performance-based Fire Code), ICFSFPE 2017
PlaceChina
CityNanjing
Period27 - 29 October 2017

Link(s)

Abstract

After Montreal protocol, more and more new materials have been applied as the substitutes of Halon. Much attention has been paid to fire extinguishing efficiency of alkali metal salts and ammonium phosphate salts, but the effects of particle sizes have not been studied sufficiently. The fire-extinguishing efficiency of a new kind of agent based on magnesium hydroxide of different particle size was studied in this paper. Four different size powders have been used to study their fire-suppression efficiency through laboratory scale experiments in a confine space of 111m. The physical and chemical characteristics of the magnesium hydroxide powders were characterized by scanning electron microscopy (SEM) and thermal gravity analysis (TGA). The results have exhibited that these four kinds of powders are all high efficient for the fire suppression efficiency and there is a threshold value of 5μm for the fire suppression efficiency of magnesium hydroxide. The efficiency can be affected by the morphology of powders and particle size. The powders of larger specific surface area and smaller particle size are more efficient to suppress fire. Fire extinguishing and possible fire-suppression mechanisms have also been analyzed from three aspects: chemical inhibition, cooling effect and asphyxiation effect.

Research Area(s)

  • dry powders, fire suppression, magnesium hydroxide, particle size

Citation Format(s)

Fire Extinguishing Efficiency of Magnesium Hydroxide Powders under Different Particle Size. / LIU, Hai-Qiang; ZONG, Ruo-Wen; LO, Siuming; HU, Yuan; ZHI, You-Ran.

2017 8th International Conference on Fire Science and Fire Protection Engineering (ICFSFPE 2017). ed. / Xu-hai Pan; Jing-hong Wang; Hao-wei Yao. 2018. p. 447-455 (Procedia Engineering; Vol. 211).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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