摘要
为详细了解5,5′-联四唑-1,1′-二氧二羟铵(TKX-50,HATO)在不同刺激方式下的反应性,采用程序升温法(DSC-TG)、聚光点火实验、密闭爆发器实验、雷管起爆和脉冲等离子体起爆5种方式对TKX-50的燃烧和爆炸反应性进行了对比研究。结果表明,TKX-50在逐步升温加热刺激下,起始分解温度为218.87℃,分解过程是由固相直接分解为气相,分解后残余率为2.85%,放热量为2273.91J/g;TKX-50燃烧反应时间持续5.5s左右,先后经历热解反应期(0~3s)、燃烧期(3~4s)和反应结束期(4~5.5s)3个阶段,分解后有部分固体残留;TKX-50燃烧持续时间为0.91ms,燃烧压力最大值为164.2MPa,燃烧速度最大值为433.45MPa/ms;采用雷管起爆测得TKX-50的爆热值为4900J/g,脉冲等离子体起爆测得其爆热值为5320J/g,爆轰产物主要为CO_(2)、CO、CH_(4)、N_(2)O、NH_(3)、C单质等。以上结果表明TKX-50在不同的刺激方式下反应性具有较大的区别,在持续受热以及等离子体刺激下反应更完全。
To understand the reactivity of dihydroxylammonium-5,5′-bistetrazole-1,1′-diolate(TKX-50)under different stimulation methods,the combustion and detonation reactivity of TKX-50 were investigated by using five methods,which were programmed temperature rise(DSC-TG)method,concentrated light ignition experiment,closed bomb test,detonator detonation and pulsed plasma initiation.The results show that the initial decomposition temperature of TKX-50 is 218.87℃.The decomposition process is directly decomposed from solid phase to gas phase,the residual rate after decomposition is 2.85%,and the exothermic value is 2273.91J/g.The combustion reaction time of TKX-50 lasts for 5.5s,and it has experienced three stages:pyrolysis reaction stage(0—3s),combustion stage(3—4s)and reaction termination stage(4—5.5s),and some solid products remain after decomposition.The combustion duration of TKX-50 is 0.91ms,the maximum combustion pressure is 164.2MPa,and the maximum combustion rate is 433.45MPa/ms.The heat of explosion of TKX-50 measured by detonator detonation is 4900J/g,while the heat of explosion measured by pulse plasma initiation is 5320J/g.The detonation products are mainly CO_(2),CO,CH_(4),N_(2)O,NH_(3),C,etc,showing that there is a large difference for the reactivity of TKX-50 with different stimulation methods,and the reaction under the constant heat and plasma strong stimulation is more complete.
作者
张坤
陶俊
薛乐星
冯博
潘文
王金华
冯晓军
王晓峰
ZHANG Kun;TAO Jun;XUE Le-xing;FENG Bo;PAN Wen;WANG Jin-hua;FENG Xiao-jun;WANG Xiao-feng(Xi′an Modern Chemistry Research Institute,Xi′an 710065,China;State Key Laboratory of Multiphase Flow in Power Engineering,Xi′an Jiaotong University,Xi′an 710049,China)
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2022年第3期348-354,共7页
Chinese Journal of Explosives & Propellants
基金
国家重大基础科研专项。
