电镜能谱仪认定火灾起火点研究
发布时间：2019-08-02 16:56
【摘要】：介绍烧毁严重程度认定法、烟熏痕迹认定法等起火点的认定方法。以烧毁严重程度判别起火部位或起火点受火灾荷载的干扰,其科学性与准确度受到质疑。电镜能谱认定起火点的方法基于起火点受热时间最长,在同类别灰烬中的碳含量最低的原理。以粉碎的A4打印纸充当可燃物设计实验,利用电镜能谱仪辨识灰烬类别,测定碳含量,确定火灾蔓延方向及起火点,验证电镜能谱认定法的可行性。结果表明,灰烬样本在经实验室电炉600℃灼烧2h后仍能够检测出≥2%的碳元素;选择能谱面分析误差较小;检测点的灰烬必须是相同类别的灰烬。介绍电镜能谱仪认定起火点的步骤。
[Abstract]:This paper introduces the identification methods of fire point, such as the identification method of burning severity and the identification method of smoke trace. According to the severity of the fire, the scientific nature and accuracy of distinguishing the fire site or the fire point from the interference of the fire load are questioned. The method of determining the ignition point by electron microscope energy spectrum is based on the principle that the ignition point is heated for the longest time and the carbon content in the same kind of ash is the lowest. The comminuted A4 printing paper was used as combustible material design experiment. The ash category was identified by electron microscope energy dispersive spectrometer, the carbon content was determined, the fire spread direction and fire point were determined, and the feasibility of electron microscope energy spectrum identification method was verified. The results show that the ash sample can still detect more than 2% carbon after burning at 600 鈩，
本文编号：2522245
[Abstract]:This paper introduces the identification methods of fire point, such as the identification method of burning severity and the identification method of smoke trace. According to the severity of the fire, the scientific nature and accuracy of distinguishing the fire site or the fire point from the interference of the fire load are questioned. The method of determining the ignition point by electron microscope energy spectrum is based on the principle that the ignition point is heated for the longest time and the carbon content in the same kind of ash is the lowest. The comminuted A4 printing paper was used as combustible material design experiment. The ash category was identified by electron microscope energy dispersive spectrometer, the carbon content was determined, the fire spread direction and fire point were determined, and the feasibility of electron microscope energy spectrum identification method was verified. The results show that the ash sample can still detect more than 2% carbon after burning at 600 鈩，
本文编号：2522245
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