Journal of Fire Sciences最新文献_第5页

Analysis of solid combustion products to establish a theoretical model of the causes of thermal runaway of ternary lithium-ion battery overcharge and heating 固体燃烧产物的分析建立三元锂离子电池过充发热热失控原因的理论模型

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2023-01-02 DOI: 10.1177/07349041221146221

W. Liu, F. Zhao, Song Yin, Tengzhou Ma, Jiang Qing

{"title":"Analysis of solid combustion products to establish a theoretical model of the causes of thermal runaway of ternary lithium-ion battery overcharge and heating","authors":"W. Liu, F. Zhao, Song Yin, Tengzhou Ma, Jiang Qing","doi":"10.1177/07349041221146221","DOIUrl":"https://doi.org/10.1177/07349041221146221","url":null,"abstract":"It is difficult to determine whether ternary lithium-ion batteries (t-LIBs) were the “source” of the actual fire scene because of the little available direct evidence left after thermal runaway combustion of lithium-ion batteries (LIBs) and the lack of relevant analytical methods for t-LIBs after complete combustion. As a result, a large number of fires involving t-LIBs are controversially identified as the cause every year. In this paper, we conducted experiments on the two most common thermal runaway types of t-LIBs to investigate the correlation model between their combustion products and thermal runaway types. In the case of overcharge, the combustion products (black powder) of t-LIBs contain aluminum elements, which may be due to the thermal reaction of aluminum. In contrast, in the case of heating, the combustion products of t-LIBs have almost no detectable elemental aluminum. The reason may be due to the ability of the electrode material to continuously decompose and precipitate a large amount of metal oxides under the overcharge condition, which constitutes the condition for the occurrence of the aluminum thermal reaction, making the presence of Al2O3 in the combustion products. However, the lack of continuous current action under the heating condition prevents the generation of the aluminum thermal reaction.","PeriodicalId":15772,"journal":{"name":"Journal of Fire Sciences","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48067348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Sensitivity analysis applied to the pyrolysis of charring and non-charring materials under a cone calorimeter 灵敏度分析应用于锥形量热计下炭化和非炭化物料的热解

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2022-11-01 DOI: 10.1177/07349041221134486

Manon Fleurotte, O. Authier, S. Bourbigot, G. Fontaine, G. Debenest, A. Amokrane

引用次数: 1

Fire-extinguishing performance and gas-phase pollution characteristics of different foam agents in extinguishing transformer oil pool fire 不同泡沫剂在变压器油池火灾中的灭火性能及气相污染特性

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2022-11-01 DOI: 10.1177/07349041221142509

Jiaqing Zhang, Fengju Shang, Wencheng Zhou, Fei Xiao, Dengfeng Cheng

{"title":"Fire-extinguishing performance and gas-phase pollution characteristics of different foam agents in extinguishing transformer oil pool fire","authors":"Jiaqing Zhang, Fengju Shang, Wencheng Zhou, Fei Xiao, Dengfeng Cheng","doi":"10.1177/07349041221142509","DOIUrl":"https://doi.org/10.1177/07349041221142509","url":null,"abstract":"In this study, aqueous film-forming foam, fluoroprotein foam, and synthetic foam were applied to extinguish the transformer oil pool fires. The fire-extinguishing performance and burn-back resistance were investigated using a laboratory fire-extinguishing system. Moreover, the emission products were analyzed to evaluate the gas-phase pollution characteristics. Results show that aqueous film-forming foam presents the highest fire-extinguishing efficiency, while fluoroprotein foam has the best burn-back performance. Flue gas and gas chromatography–mass spectrometer analyses demonstrate that the use of fluoroprotein foam results in much higher CO emissions than other foams, and the pollutants are mainly from various hydrocarbons produced by incomplete combustion of transformer oil. Synthetic foam and aqueous film-forming foam lead to higher SO2 and NO emissions, and pollutants are mainly dominated by alcohols and ethers. Noteworthily, when using aqueous film-forming foam to extinguish oil pool fire, a persistent organic pollutant, perfluorooctanoic acid, is detected in the gas phase.","PeriodicalId":15772,"journal":{"name":"Journal of Fire Sciences","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47971045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The study of firefighter operation radio attenuation during fire disaster 火灾期间消防员操作无线电衰减的研究

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2022-11-01 DOI: 10.1177/07349041221137683

C. Weng, Yuan-Ming Chiu, Ya-wen Yang

引用次数: 0

Experimental study on combustion characteristics of fire in data room 数据室火灾燃烧特性的实验研究

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2022-08-27 DOI: 10.1177/07349041221119715

X. Gui, Haiteng Xue, Yan Jia, Can Zhang, Shi Xing

引用次数: 1

Effects of accelerated and natural weathering on fire-retarded industrial wood composite 加速和自然风化对阻燃工业木材复合材料的影响

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2022-08-27 DOI: 10.1177/07349041221102059

G. Fontaine, V. Marchetti, S. Bourbigot

引用次数: 1

Electrical applications in Internet of things and e-vehicles: Passive fire safety needs and solutions 物联网和电动汽车中的电气应用：被动消防安全需求和解决方案

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2022-07-07 DOI: 10.1177/07349041221108643

J. Troitzsch

引用次数: 0

Experiments in aerial firefighting with and without additives and its application to suppress wildfires near electrical transmission lines 有添加剂和无添加剂的空中灭火实验及其在抑制输电线路附近野火中的应用

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2022-06-22 DOI: 10.1177/07349041221098171

Tejun Zhou, Jiazheng Lu, Lifu He, Chuanping Wu, Jing Luo

{"title":"Experiments in aerial firefighting with and without additives and its application to suppress wildfires near electrical transmission lines","authors":"Tejun Zhou, Jiazheng Lu, Lifu He, Chuanping Wu, Jing Luo","doi":"10.1177/07349041221098171","DOIUrl":"https://doi.org/10.1177/07349041221098171","url":null,"abstract":"A comparison scheme is proposed to extinguish non-uniform fire scenes and continuously uniform fire scenes using a helicopter’s bucket fire-extinguishing device to spray extinguishing agent. Pure water, and Class AB, gel, and Class A extinguishing agents were added to the bucket fire-extinguishing device to spray 4-layer, 6-layer, and 12-layer wood crib fires. It was discovered that the depth (the distance from the top of the wood crib) of effective cooling and prevention of temperature recovery by extinguishing agents was 0.36 m and that the cooling performance of the extinguishing agents in sequence from high to low was Class A extinguishing agent > gel extinguishing agent > Class AB extinguishing agent > pure water. Their capacity to prevent temperature recovery in the wood crib fires in sequence from high to low was gel extinguishing agent > Class A extinguishing agent > Class AB extinguishing agent > pure water. A device has been developed that can add extinguishing agent to the helicopter bucket efficiently, and its application on-site during the 2020–2021 Spring Festival and other events showed that it can quickly extinguish small-area wildfires near electrical transmission lines to reduce line trips due to wildfire.","PeriodicalId":15772,"journal":{"name":"Journal of Fire Sciences","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47963876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Flame retardancy of biodegradable polylactic acid with piperazine pyrophosphate and melamine cyanurate as flame retardant 以焦磷酸哌嗪和三聚氰胺为阻燃剂的可生物降解聚乳酸的阻燃性能

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2022-05-08 DOI: 10.1177/07349041221093546

Hongxu Chen, Wei Xia, Nan Wang, Yang Liu, Penghui Fan, Song Wang, Sanxi Li, Jie Liu, Tao Tang, Ailing Zhang, Zhan Ding, Wei Wu, Qi Chen

{"title":"Flame retardancy of biodegradable polylactic acid with piperazine pyrophosphate and melamine cyanurate as flame retardant","authors":"Hongxu Chen, Wei Xia, Nan Wang, Yang Liu, Penghui Fan, Song Wang, Sanxi Li, Jie Liu, Tao Tang, Ailing Zhang, Zhan Ding, Wei Wu, Qi Chen","doi":"10.1177/07349041221093546","DOIUrl":"https://doi.org/10.1177/07349041221093546","url":null,"abstract":"A flame-retardant polylactic acid composite added with piperazine pyrophosphate and melamine cyanurate was developed. Piperazine pyrophosphate and melamine cyanurate showed synergistic effect in the polylactic acid composites. When the weight ratio of piperazine pyrophosphate to melamine cyanurate was 4:1 and the loading of the piperazine pyrophosphate/melamine cyanurate flame retardant was 15 wt.%, the prepared polylactic acid composites passed V-0 rating in the UL-94 test and achieved the high limit oxygen index value of 34.9%. The cone calorimeter test result confirmed that the addition of piperazine pyrophosphate/melamine cyanurate flame retardant reduced the total heat release value of polylactic acid. The effect of polylactic acid biodegradation on the flame retardancy of polylactic acid composite was further discussed. The biodegraded polylactic acid, which was exposed to the air for 8 months, showed high flame retardancy and even passed V-0 rating in the UL-94 test without the addition of piperazine pyrophosphate/melamine cyanurate flame retardant, which proved that biodegradation could affect the flame retardancy of polylactic acid.","PeriodicalId":15772,"journal":{"name":"Journal of Fire Sciences","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2022-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48821296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

The well-meaning but misguided rollback of fire safety in the United States 美国消防安全善意但被误导的倒退

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2022-05-04 DOI: 10.1177/07349041221096609

A. Morgan

引用次数: 0