An investigation of flammability of ghee by using cone calorimeter
-
摘要: 利用锥形量热仪在50kW/m2热辐照条件下,研究了工业酥油、食用酥油和石蜡的燃烧性,获得了点燃时间、比消光面积、最大热释放速率、总释放热、有效燃烧热、最大烟产生速率、总烟释放量及质量损失速度等参数。实验结果表明,工业酥油、食用酥油比石蜡容易点燃;工业酥油和石蜡燃烧性能接近,可燃性和火灾指数均高于食用酥油;石蜡和食用酥油燃烧过程的碳烟量比工业酥油低,石蜡和食用酥油比工业酥油燃烧完全。三种材料燃烧过程中热量的释放滞后于烟气的释放,其质量的损失主要由烟气的释放造成。稳定燃烧时烟气释放速率降低,热释放速率达到最大。Abstract: The behavior of flammability of industrial ghee, edible ghee and paraffin had been investigated by using cone calorimeter at incident heat flux of 50 kW/m 2 in this paper, basing upon the parameters, such as time to ignition (TTI) , specific extinction area (SEA) , peak heat release rate (pk-HRR) , total heat release (THR) , effective heat of combustion (EHC) , peak smoke production rate (pk-SPR) , total smoke production (TSP) and mass loss rate (MLR) , etc.The results were obtained as follows:industrial ghee and edible ghee were easily ignited than paraffin.The flammability of industrial ghee was close to the flammability of paraffin, their flammability and fire index were higher than edible ghee.The amount of soot of edible and paraffin were lower than industrial ghee in the combustion process, edible and paraffin burned completely than industrial ghee.The heat release rate lagged behind the smoke release rate, the mass loss was mainly caused by the release of the flue gas.In a steady state, the combustion was characterized by decreasing the smoke release rate and increasing the heat release rate.
-
[1] 王庆国, 张军, 张峰.锥形量热仪的工作原理[J].现代仪器分析, 2003 (6) :36-39. [2] 徐晓楠.新一代评估方法-锥形量热仪 (Cone) 法在材料阻燃研究中的运用[J].中国安全科学学报, 2003, 13 (1) :19-23. [3] HSH IEH F Y, BEEEON H D.Flammability testing of flame-retarded epoxy composites and phenolic composites[J].Fire and Materials, 1997, 21 (1) :41-49.
[4] GILMAN JW, RITCHE S J, KASHIWAGIT, et al.Fire retardant additives for polym eric materials char formation from silica gel potassium carbonate[J].Fire and Materials, 1997, 21 (1) :23-32.
[5] 田晓瑞, 贺庆棠, 舒立福.利用锥形量热仪分析树种阻火性能[J].北京林业大学学报, 2001, 23 (1) :48-51. [6] 王勇, 魏兆春, 黄鑫, 等.阻燃PVC性能的锥形量热仪CONE研究[J].云南大学学报:自然科学版, 2005, 27 (3) :367-371. [7] 王晓春, 王然, 滕万红, 等.锥形量热仪法在涤棉织物阻燃整理中的应用[J].印染, 2011 (5) :6-9. [8] 秦俊, 翁文国.酥油等温燃烧化学动力学研究[J].燃烧科学与技术, 2006, 12 (2) :101-104. [9] Fan W C.Fire safety research of historical building in Chins[C].Australia:Proceedings of5th Asia-oceania Symposium of Fire Science and Technology, 2001:83-96.
[10] 吴玉章, 杨忠.锥形量热仪法研究超细A (lOH) 3处理中密度纤维板的燃烧性能[J].东北林业大学学报, 2010, 38 (2) :47-49. [11] 王清文, 张志军, 陈琳, 等.氧浓度对阻燃木材发烟性能的影响[J].林业科学, 2006, 42 (12) :95-100.
计量
- 文章访问数: 144
- HTML全文浏览量: 23
- PDF下载量: 145
下载:
