导线绝缘层灰烬断面SEM鉴定火灾痕迹研究  

Study on fire trace identification of wire insulation ash section by SEM analysis

作　　者：黄超[1] 黄洪澜 HUANG Chao;HUANG Hong-lan(Jiangsu Police Institute,Jiangsu Nanjing 210031,China;School of Chemical Engineering,Nanjing University of Science and Technology,Jiangsu Nanjing 210094,China)

机构地区：[1]江苏警官学院,江苏南京210031 [2]南京理工大学化工学院,江苏南京210094

出　　处：《消防科学与技术》2021年第4期598-601,共4页Fire Science and Technology

基　　金：公安部公安理论及其软科学研究项目(RKX20201026);江苏高校哲学社会科学优秀创新团队建设项目;江苏高校优势学科建设工程资助项目(PAPD)。

摘　　要：开展实验,研究通过SEM微观形貌分析法分析导线塑料绝缘层灰烬断面,鉴定火灾痕迹。制备电流长期过载短路经灼烧后的塑料绝缘层残渣、瞬间短路经灼烧后的残渣、通电中灼烧导致短路的残渣和未通电灼烧后的残渣。开发残渣横截面扫描电镜检验样本制作方法,制作残渣样本。观察总结样本的微观特征,鉴定一次短路烧痕、二次短路烧痕和火烧痕。研究拓展了火灾起因鉴定检材获取路径,与熔珠鉴定互为补充,完善证据链,具有显著的应用价值。Experiments are carried out to study the fire trace identification of wire insulation ash section by SEM microscopic morphology analysis.The residues are made,such as the fire residue of short circuit caused by long term overload,fire residue of instantaneous short circuit,residue of short circuit caused by fire etc.The production method of residue sample for SEM is developed,and the samples are made.The micro characteristics of the samples is observed and summarized,to identify the primary and secondary short-circuit burn mark as well as the fire mark.This method expands the acquisition path of the material used for fire cause identification,is complements to molten bead identification,improves the evidence chain,thus has significant application value.

关 键 词：SEM分析 电气火灾 绝缘层 断面 火灾物证鉴定 

分 类 号：X928.7[环境科学与工程—安全科学] D918.91[政治法律—法学]