Hazard evaluation of ignition sensitivity and explosion severity for three typical MH_(2) (M=Mg,Ti,Zr)of energetic materials

作     者：Xing-liang Wu Sen Xu Ai-min Pang Wei-guo Cao Da-bin Liu Xin-yu Zhu Fei-yang Xu Xu Wang Xing-liang Wu;Sen Xu;Ai-min Pang;Wei-guo Cao;Da-bin Liu;Xin-yu Zhu;Fei-yang Xu;Xu Wang

作者机构：School of Chemical EngineeringNanjing University of Science and TechnologyNanjingJiangsu210094PR China Science and Technology on Aerospace Chemical Power LaboratoryHubei Institute of Aerospace ChemotechnologyXiangyang441003PR China School of Environmental and Safety EngineeringNorth University of ChinaTaiyuan030051ShanxiPR China 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2021年第17卷第4期

页      面：1262-1268页

核心收录：

学科分类：082604[工学-军事化学与烟火技术] 08[工学] 0826[工学-兵器科学与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：This work was greatly supported by the Natural Science Foundation of China(11802272) the Open Research Fund Program of Science and Technology on Aerospace Chemical Power Laboratory(STACPL220181B01) 

主　　题：Ignition energy Explosion pressure Reaction activity Combustion heat 

摘      要：MgH_(2),TiH_(2),and ZrH_(2) are three typical metal hydrides that have been gradually applied to composite explosives and propellants as additives in recent *** evaluate ignition sensitivity and explosion severity,the Hartmann device and spherical pressure vessel were used to test ignition energy and explosion pressure,*** results showed that the ignition sensitivity of ZrH_(2),TiH_(2) and MgH_(2) gradually *** the concentration of MgH_(2) is 83.0 g/m^(3) in Hartmann device,the ignition energy attained a minimum of 10.0 *** explosion pressure of MgH_(2) were 1.44 times and 1.76 times that of TiH_(2) and ZrH_(2),respectively,and the explosion pressure rising rate were 3.97 times and 9.96 times that of TiH_(2) and ZrH_(2),respectively,through the spherical pressure *** indicated that the reaction reactivity and reaction rate of MgH_(2) were higher than that of TiH_(2) and ZrH_(2).In addition,to conduct in edepth theoretical analysis of ignition sensitivity and explosion severity,gas production and combustion heat per unit mass of ZrH_(2),TiH_(2) and MgH_(2) were tested by mercury manometer and oxygen bomb *** experimental results revealed that MgH_(2) had a relatively high gas production per unit mass(5.15 mL/g),while TiH_(2) and ZrH_(2) both had a gas production of less than 2.0 mL/*** thermal stability gradually increased,leading to a gradual increase in ignition ***,compared with theoretical combustion heat,the combustion ratio of MgH_(2),TiH_(2) and ZrH_(2) was more than 96.0%,with combustion heat value of 29.96,20.94 and 12.22 MJ/kg,respectively,which was consistent with the explosion pressure and explosion severity test results.