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Electrical Tracking,Erosion and Fire Retardancy Performance of Silicone Rubber Insulation Containing Aluminum Trihydrate,Graphene and Glass Fiber Additives

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CSEE Journal of Power and Energy Systems 2023年第5期9卷 1918-1925页

作者： M.Tariq Nazir Arslan Khalid B.Toan Phung Arup K.Das Peter Cheetham Ashish Paramane Shakeel Akram Khoi Loon Wong School of Engineering RMIT UniversityMelbourneVIC 3000Australia. the Center for Advanced Power Systems(CAPS) Florida State UniversityFL 32310USA the Flame Security International Pty Limited Australia the School of Electrical Engineering and Telecommunications University of New South Wales SydneyNSW 2052Australia Department of Electrical Engineering National Institute of TechnologySilcharAssam 788010India the College of Electrical Engineering and Control Science Nanjing Tech UniversityNanjingJiangsu 211816China

Silicone rubber composite is a priority electrical insulating material used in high-voltage outdoor insulation *** electrical tracking/erosion and poor flame resistance performance of silicone rubber once ignited,substantially reduce its working *** paper attempts to investigate tracking/erosion performance of room temperature vulcanized(RTV)silicone rubber along with flame retardant parameters using aluminum trihydrate(ATH),graphene nanosheets(GN)and milled glass fiber(GF)*** inclined plane test(IPT)was performed in line with criteria defined in IEC 60587 using step-up tracking voltage method while flame retardancy is evaluated according to ASTM E 1354.0 using a cone *** suggest 30% of ATH assists in improving physical tracking/erosion resistance of pristine silicone elastomer rubber by impeding development of leakage current and a great reduction in maximum average temperatures on the surface of *** improvement in performance of RTV2 is achieved through introduction of 1%of GN and 5% of GF as seen in ***,30% of ATH reduces heat release rate and smoke production rate,and this trend is improved with the introduction of GN/***4 has pop up as the most promising silicone rubber composite with excellent electrical tracking,erosion,and flame resistance performance relative to its counterparts in this study.

关键词： Dry band arcing electrical tracking heat release rate leakage current silicone rubber smoke production rate

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Pyrolysis,combustion,and fire spread characteristics of the railway train carriages:A review of development

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Energy and Built Environment 2023年第6期4卷 743-759页

作者： Jidan Zhang Wenhui Ji Zhongyuan Yuan Yanping Yuan School of Mechanical Engineering Southwest Jiaotong UniversityChengdu 610031China

Fires in the railway trains are prone to cause large numbers of casualties,serious economic losses,and huge negative social *** railway train carriage is a special confined built environment,where the pyrolysis,combustion,and fire spread process are different from those fire accidents in open *** the fire characteristics of the railway train carriages is the key issue to determine the fire prevention and control ***,this paper attempts to assess and identify the characteristics of pyrolysis,combustion,and fire spread of railway trains based on the exising *** review documents the pyrolysis and combustion characteristics of single train material and the combustible module,summarizes the heat release rate(HRR)calculation methods and the HRR profile for different types of trains,as well as introduces the research progress in the flame spread and *** main gaps and issues to be solved in terms of the effects of train speed,altitudes,and application of new energy trains are further discussed.

关键词： Fire safety Railway trains Pyrolysis heat release rate Fire spread Flashover

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Effect of Organo-Modified Nanosepiolite on Fire Behaviors and Mechanical Performance of Polypropylene Composites

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中国化学:英文版 2015年第2期33卷 285-291页

作者： Junhao Zhang Sergio de Juan Antonio Esteban-Cubillo Julio Santarén De-Yi Wang Madrid Institute for Advanced Studies of Materials(IMDEA-Materials) C/Eric Kandel2Getafe(Madrid)28906Spain Tolsa S.A.R.&D.Department Carretera de Madrid a Rivas Jarama3528031 MadridSpain

The objective of the study was to investigate the effect of the organo-modified nanosepiolite(ONSep)on improving the fire safety of polypropylene(PP).The composites based on PP,flame retardant master batch(MB-FR,25 wt%PP+50 wt%decabromodiphenyl ether(DBDPE)+25%antimony trioxide(ATO))and ONSep were prepared via melt *** results of the limiting oxygen index(LOI)and vertical burning rating(UL-94)test indicated that PP/40 wt%MB composites had no rating with seriously dripping phenomenon,while the LOI value was only ***,as 4 wt%ONSep was added in PP/40 wt%MB composites,the composites achieved UL94 V-0 rating and the LOI value was *** comparison,PP/50 wt%MB composites could not reach the V-0 rating *** TGA results revealed that the addition of ONSep enhanced the thermal stability of the PP/MB-FR *** cone calorimeter results indicated that the heat release rate,average mass loss rate,smoke production rate and smoke temperature of the PP/40 wt%MB-FR/4 wt%ONSep composites decreased in comparison with those of PP/40 wt%MB-FR ***,the Young modulus and impact strength were also much better improved with the increase of ONSep ***,the synergistic flame retardancy of ONSep in PP/MB-FR matrix significantly containing a halogen based flame retardant(DBDPE)significantly improved the fire safety and mechanical properties of the composites,and allowed to decrease the total amount of brominated fire retardants.

关键词： nanosepiolite polypropylene flame retardancy heat release rate

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An Experimental Study on Fuel Combustion Under External Irradiance

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Fluid Dynamics & Materials Processing 2019年第4期15卷 445-458页

作者： Jianjun Liang Zhe Song Peili Zhang Chongqing Key Laboratory of Fire and explosion safety Army Logistics UniversityChongqing401311China Chongqing Fire Safety Research&Service Co.Ltd. Chongqing401120China

In order to investigate the burning characteristics of a 0#diesel and 3#jet fuel,a small-scale experimental bench mainly composed of a cone calorimeter was *** heat release and burning rates were investigated changing the external irradiance in order to clarify the triadic relationship among these *** effective heat of combustion of 0#diesel and 3#jet fuel were 38.89 MJ/kg and 43.15 MJ/kg,respectively,with the corresponding combustion efficiencies being 96.78%and 99.60%(the effective peak heat of combustion being 1.665 times the mean value for both types of fuel).According to our experimental results,the heat release rate and burning rate of 0#diesel and 3#jet fuel both grow linearly with an increase in the external ***,the heat release rate and burning rate of 3#jet fuel are greater than the equivalent values for the 0#*** average smoke production rate of 0#diesel grows with an increase in the external irradiance,while for the 3#jet fuel it remains approximately the *** specific extinction area of these two kinds of fuel shows a subtle decrease with the increase of external *** time to ignition of 3#jet fuel is smaller than 0#diesel for all the considered external irradiances,which indicates that 3#jet fuel is easier to ignite than the 0#diesel.

关键词： External irradiance heat release rate burning rate effective heat of combustion

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Numerical simulation of fire development in a single compartment based on cone calorimeter experiments

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Progress in Natural Science:Materials International 2002年第5期 50-54页

作者： JI Jingwei, CHENG Yuanping, YANG Lizhong and FAN Weicheng( State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China College of Energy Science and Engineering, China University of Mining and Technology, Xuzhou 221008, China) State Key Laboratory of Fire Science，University of Science and Technology of China，Hefei 230026，China College of Energy Science and Engineering，China University of Mining and Technology，Xuzhou 221008，China

The burning characteristics of several kinds of wood and polyurethane materials have been studied using cone calorimeter (CONE2A). A new and simple ignition criterion, heat release rate model and mass loss rate model are proposed based on experiments. Combined with these models, the zone-model of fire can be used to predict fire development in a single compartment according to the species of combustibles, their quantities and distribution. Calculated results show that this method is simple and feasible.

关键词： cone calorimeter heat release rate mass loss rate ignition criteria numerical simulation fire.

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热电偶测量火焰温度与放热率分布特性的实验研究

热电偶测量火焰温度与放热率分布特性的实验研究

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中国航天第三专业信息网第三十八届技术交流会暨第二届空天动力联合会议

作者：胡悦谭建国吕良国防科学技术大学航天科学与工程学院高超声速冲压发动机技术重点实验室

为了获得火焰的温度与放热率分布,分析火焰的燃烧特性,对甲烷-空气层流预混火焰进行了实验研究。使用铂铑13-铂热电偶测量了当量比0.8.2,预混气流速度5cm/s5cm/s工况下平面火焰的温度分布,得到放热率分布,并分析了火焰的燃烧特性随当量... 详细信息

为了获得火焰的温度与放热率分布,分析火焰的燃烧特性,对甲烷-空气层流预混火焰进行了实验研究。使用铂铑13-铂热电偶测量了当量比0.8.2,预混气流速度5cm/s5cm/s工况下平面火焰的温度分布,得到放热率分布,并分析了火焰的燃烧特性随当量比、气流速度的变化规律。结果表明:在实验工况范围内,随当量比增大,火焰最高温度与温度梯度均变大,到达最高温度的速度变快,放热率峰值对应的火焰高度变小,峰值位置提前;随流速增加,放热率增大,峰值位置保持不变,放热率峰值与流速成二次方关系;同一流速下,当量比增大火焰厚度变小。

关键词： Flame temperature heat release rate Thermocouple Laminar premixed flames Flame thickness

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甲烷-空气二维预混火焰中化学发光测量放热率的数值模拟与实验研究

甲烷-空气二维预混火焰中化学发光测量放热率的数值模拟与实验研究

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中国航天第三专业信息网第四十届技术交流会暨第四届空天动力联合会议

作者：胡悦谭建国吕良国防科学技术大学空天科学学院中国空气动力研究与发展中心

为了研究利用化学发光测量放热率与当量比的方法,在前期平面预混火焰研究的基础上,对甲烷-空气二维层流预混火焰进行了数值模拟与实验研究。使用19组分、39基元反应的简化机理对二维火焰进行数值模拟,得到了二维火焰的温度、放热率分布... 详细信息

为了研究利用化学发光测量放热率与当量比的方法,在前期平面预混火焰研究的基础上,对甲烷-空气二维层流预混火焰进行了数值模拟与实验研究。使用19组分、39基元反应的简化机理对二维火焰进行数值模拟,得到了二维火焰的温度、放热率分布,并分析了当量比、流速对火焰传播速度的影响,验证了数值模拟结果的正确性。利用ICCD相机测量了二维火焰中OH*和CH*的化学发光分布,研究了光强与放热率之间的定量关系。结果表明:同一当量比下,流速增大时火焰高度升高,火焰面锥角减小;数值仿真得到火焰传播速度与理论值符合的较好;二维火焰中OH*和CH*的化学发光均可以较为准确的标识反应的放热区,确定放热率分布;当量比相同、流速变化时放热率峰值并不发生显著变化,OH*光强峰值与放热率峰值之间存在很强的线性相关性,并且两者的函数关系与当量比无关;而CH*与放热率之间不存在类似的线性关系。在二维火焰中利用化学发光也可以实现对放热率的定量测量。

关键词： 2D laminar premixed flames Reduced reaction mechanism Chemiluminescence heat release rate Equivalence ratio

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