亚甲基二硝基胍(BNGM)的热行为(英文)  

Thermal Behaviors of Bis(nitroguanidine)methane(BNGM)

作　　者：关晓鸽 李静 李彦峰[1] 徐抗震[1] 宋纪蓉[1] 赵凤起[2] GUAN Xiao-ge;LI Jing;LI Yan-feng;XU Kang-zhen;SONG Ji-rong;ZHAO Feng-qi(School of Chemical Engineering,Northwest University,Xi＇an 710069,China;Xi＇an Modern Chemistry Research Institute,Xi＇an 710065,China)

机构地区：[1]西北大学化工学院,陕西西安710069 [2]西安近代化学研究所,陕西西安710065

出　　处：《含能材料》2018年第8期653-658,共6页Chinese Journal of Energetic Materials

基　　金：the National Natural Science Foundation of China(No.21673178)

摘　　要：为进一步评估亚甲基二硝基胍(BNGM)的热稳定性,采用差示扫描量热法(DSC),微量热仪,热重‐微分热重分析(TG/DTG)和撞击实验,研究了BNGM的热分解行为、比热容、绝热至爆时间,并测试了其撞击感度。结果表明:BNGM的热行为分为两个放热分解过程,10℃·min^(-1)下两个分解过程的峰温分别为208.1℃和292.5℃,其自加速分解温度和热爆炸临界温度分别为189.6℃和190.9℃,298.15 K时摩尔热容为251.9 J·mol^(-1)·K^(-1),估算绝热至爆时间约为280 s,撞击感度大于23.5 J,表明BNGM热稳定性良好。To further evaluate the thermal stability of bis（nitroguanidine）methane（BNGM）and explore its potential application as energetic material,the thermal behavior,specific heat capacity,adiabatic time-to-explosion and impact sensitivity of BNGM were studied by differential scanning calorimetry（DSC）,micro-DSC,thermogravimetry/differential thermogravimetry（TG/DTG）and impact experiment. Results show that the thermal behavior of BNGM can be divided into two exothermic decomposition processes. The peak temperatures of the two decomposition processes at a heating rate of 10 ℃·min^-1 are 208.1 ℃ and 292.5 ℃,respectively. Its self-accelerating decomposition temperature（TSADT） and critical temperature of thermal explosion（Tb） are189.6 ℃ and 190.9 ℃,respectively. Its molar heat capacity at 298.15 K is 251.9 J·mol^-1·K^-1. Adiabatic time-to-explosion is estimated to be about 280 s. BNGM has a low impact sensitivity,which is higher than 23.5 J. The thermal stability of BNGM is good.

关 键 词：含能材料 亚甲基二硝基胍(BNGM) 热行为 撞击感度 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O65[理学—分析化学]