A new type of fire suppressant powder of NaHCO3/zeolite nanocomposites with core–shell structure

Ni, Xiaomin; Kuang, Kaiqian; Yang, Donglei; Xiang, Jin; Liao, Guangxuan

doi:10.1016/j.firesaf.2009.06.004

Cited by 72 publications

(23 citation statements)

References 8 publications

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“…Similar small-sized fire-extinguishing chamber had been utilized to measure the fire suppression effectiveness of dry powders, and its availability and accuracy in determining the performance of dry powders had been confirmed in previous investigations. 9,11,15,21,22 The driving pressures in the fire-extinguishing experiment were set as 0.2, 0.3, and 0.4 MPa. Before the sample powders were added to the powder tank, the blind tests only using N 2 without powder were carried out.…”

Section: Fire-extinguishing Testsmentioning

confidence: 99%

“…Zeolites have been used extensively in various fields for their unique structure, high surface area, superior adsorption capacity, and low density . Furthermore, zeolites have well‐defined channels and cavities that are of a suitable size for incorporating small molecules and clusters .…”

Section: Introductionmentioning

confidence: 99%

“…Zeolites have been used extensively in various fields for their unique structure, high surface area, superior adsorption capacity, and low density. [14][15][16][17] Furthermore, zeolites have well-defined channels and cavities that are of a suitable size for incorporating small molecules and clusters. 18 The ABC dry powder fire-extinguishing agent, which has many applications, as well as stifling and cooling effects, can be applied to extinguish solid, liquid, and gas fires.…”

Section: Introductionmentioning

confidence: 99%

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Fire suppression performance of a new type of composite superfine dry powder

et al. 2019

Fire and Materials

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Summary To enhance the performance of existing dry powders and ensure process security, a new type of dry powder based on ammonium dihydrogen phosphate (NH4H2PO4) was prepared. The prepared composite superfine dry powder was denoted as NH4H2PO4/zeolite composite in this paper. The effectiveness of commercial ABC dry powder, superfine dry powder, and the NH4H2PO4/zeolite composite in fire suppression were compared in a small‐sized fire‐extinguishing chamber. Laboratory‐scale tests showed that the NH4H2PO4/zeolite composite had considerably superior fire‐extinguishing efficiency to that of commercial ABC dry powder and superfine dry powder, along with shorter average extinguishing time and less average mass of powders consumed. In addition, the NH4H2PO4/zeolite composite also displayed much improved toxic gas suppression ability. The physical and chemical characteristics of commercial ABC dry powder, superfine dry powder, and the NH4H2PO4/zeolite composite were characterized using a range of techniques of laser particle size analysis, scanning electron microscopy, thermogravimetric analysis, and differential scanning calorimetry. Based on the analysis results, the improved fire suppression performance of the NH4H2PO4/zeolite composite can be ascribed to smaller particle size, larger surface area, and a special chemical decomposition process.

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Section: Fire-extinguishing Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fire suppression performance of a new type of composite superfine dry powder

et al. 2019

Fire and Materials

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“…K 2 CO 3 의 우 수한 소화효과에도 불구하고 분말형태의 소화약제로 연구 및 활용된 예는 없다. 다만 NaHCO 3 분말의 입자크기를 줄 여 소화효과를 더욱 높이는 방법을 강구하였는데, Ni 등은 흡착제로 많이 사용하는 Zeolite 13X에 미세 NaHCO 3 를 흡착시켜 기존 소화분말의 소화능력에 Zeolite 13X의 낮은 밀도로 인한 화염체류시간의 증대 및 연소억제반응 등으로 한층 더 나은 소화효과를 나타낸다고 보고하였다 (4) . …”

Section: 서 론unclassified

A Study on Extinguishing Concentration of K₂CO₃-Zeolite Composites

Kim¹,

Shin²

2012

Journal of Korean Institute of Fire Science and Engineering

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In the study, fire extinguishing concentration of K 2 CO 3 -Zeolite composite was measured. Zeolite composite is a porous adsorbent which has small particle size, low density and anti-catalytic effect. Scanning Electron Microscopy, X-Ray diffraction and thermal analysis were also conducted to investigate the structural properties of composite. The result showed that despite of weight ratio, the extinguishing concentration of the composite was lower than pure K 2 CO 3 . The extinguishing concentration of K 2 CO 3 -Zeolite composite which has weight ratio of 7 : 3 was 5.72 times lower than that of pure K 2 CO 3 and 1.1 times lower than that of ABC powder. The SEM and XRD patterns showed that K 2 CO 3 was adsorbed on the Zeolite properly, and through the thermal analysis, it was founded that the composite is more effective extinguishing agent than pure K 2 CO 3 .

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“…This is one of the central problems in fire safety science and technology. One approach to overcoming this problem is to create effective fire-fighting agents, and a number of studies have been reported on fire-fighting agents such as dry chemicals [1], wet chemicals [2] [3] and inert gases [4] [5] [6]. Another approach is to develop and improve firefighting equipments.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Fire Extinguishing Performance by Decentralized Supply of Fire-Fighting Agents

Iwatani¹,

Torikai²

2017

OJSST

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One of the central problems in fire safety science and technology is to reduce damage caused by both fires and fire-fighting processes. This paper provides a potential solution to the problem, and it derives from decentralization of fire-fighting agents. In particular, this paper investigates fire extinguishing performance when a fire-fighting agent is supplied to a fire from one direction with one extinguisher and from two directions with two extinguishers. The two methods are called the centralized supply and the decentralized supply, respectively, in this paper. It is demonstrated that the decentralized supply reduces damage caused by both fires and fire-fighting processes. This follows from the facts that fire extinguishment by the decentralized supply is more certain than the centralized supply, and that the decentralized supply requires less total amount of a fire-fighting agent than the centralized supply for fire extinguishment.

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A new type of fire suppressant powder of NaHCO3/zeolite nanocomposites with core–shell structure

Cited by 72 publications

References 8 publications

Fire suppression performance of a new type of composite superfine dry powder

Fire suppression performance of a new type of composite superfine dry powder

A Study on Extinguishing Concentration of K₂CO₃-Zeolite Composites

Improvement of Fire Extinguishing Performance by Decentralized Supply of Fire-Fighting Agents

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A new type of fire suppressant powder of NaHCO3/zeolite nanocomposites with core–shell structure

Cited by 72 publications

References 8 publications

Fire suppression performance of a new type of composite superfine dry powder

Fire suppression performance of a new type of composite superfine dry powder

A Study on Extinguishing Concentration of K2CO3-Zeolite Composites

Improvement of Fire Extinguishing Performance by Decentralized Supply of Fire-Fighting Agents

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A Study on Extinguishing Concentration of K₂CO₃-Zeolite Composites