四种混合不同碳材料的FOX-7粉末激光点火:点火延迟实验与简化计算  

Laser Ignition of Four Types of FOX-7 Powders Mixed with Different Carbon Materials:Experiments and Simplified Calculations of Ignition Delays

作　　者：李恒 赵凤起[1] 徐司雨[1] 姜菡雨[1] 裴庆[1] 王长健[1] 张蕊[2] 张洋 马晓迅[3] 郝海霞[1] LI Heng;ZHAO Feng-qi;XU Si-yu;JIANG Han-yu;PEI Qing;WANG Chang-jian;ZHANG Rui;ZHANG Yang;MA Xiao-xun;HAO Hai-xia(Science and Technology on Combustion and Explosion Laboratory,Xi′an Modern Chemistry Research Institute,Xi′an 710065,China;Science and Technology on Applied Physical Chemistry Laboratory,Shaanxi Applied Physical-Chemistry Research Institute,Xi′an 710061,China;College of Chemical Engineering,Northwest University,Xi′an 710069,China)

机构地区：[1]西安近代化学研究所燃烧与爆炸技术重点实验室,陕西西安710065 [2]陕西应用物理化学研究所应用物理化学重点实验室,陕西西安710061 [3]西北大学化工学院,陕西西安710069

出　　处：《火炸药学报》2023年第2期163-171,I0009,共10页Chinese Journal of Explosives & Propellants

基　　金：National Natural Science Foundation of China(No.21473130;No.52027809)。

摘　　要：针对1,1-二胺-2,2-二硝基乙烯(FOX-7)因点火相对困难而限制其广泛应用的问题,利用CO_(2)激光器在一定的功率密度范围对4种混合不同碳材料的FOX-7粉末开展了点火实验,研究点火延迟时间的变化趋势。采用两种简化模型对点火延迟时间进行计算与分析,以探究点火机理和指导FOX-7的点火性能提升。结果表明,几种碳材料的添加会导致FOX-7粉末点火延迟时间发生不同程度的缩短。石墨烯和氧化石墨烯在缩短点火延迟方面表现出相对较强的促进作用,石墨的效果较为轻微。计算结果显示,模型1比模型2更适合预测FOX-7粉末的点火延迟时间。机理分析表明,石墨烯的添加能够有效提升FOX-7粉末对辐照能量的吸收且减小能量损失。研究表明FOX-7粉末样品的主要点火诱导过程受到激光辐照下传热性质的强烈影响。The ignition experiments of four types of FOX-7(1,1-diamino-2,2-dinitroethene)powders mixed with different carbon materials were carried out by a CO2laser over a certain range of power density to study the trend of ignition delay times,aiming at the relatively difficult ignition performance of FOX-7hindering extensive applications.The calculations and analysis of ignition delay times were conducted by two simplified ignition models to gain insight into the ignition mechanism and guide the ignition performance improvement of FOX-7.It is experimentally observed that the ignition delay time of FOX-7powder reduced to different extents due to the addition of carbon materials.Graphene and graphene oxide exhibit relatively strong promoting role in shortening the ignition delay time and graphite has a slight effect.The calculation results show that Model 1is more suitable for effectively predicting the ignition delay time of FOX-7powder than Model 2.The mechanism analysis indicates that the addition of graphene could efficiently improve the absorption of radiation energy by FOX-7powder and reduce energy loss.The main ignition induced process of FOX-7sample was intensively affected by the heat transfer properties under laser irradiation.

关 键 词：物理化学 FOX-7 碳材料 激光点火 点火延迟 简化计算 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O64[理学—物理化学]