摘要
为探索高致密球形黑索今(H-RDX)与普通黑索今(RDX)对浇注炸药性能的影响,采用扫描电子显微镜(SEM)、差示扫描量热仪(DSC)等对两者的晶体形貌、热稳定性及机械感度进行评估;同时以典型浇注配方为例,探讨RDX类别对药浆黏度、药柱密度、爆速和冲击波感度的影响规律。结果表明:H-RDX表面光滑,晶体缺陷少,球形度高;与普通RDX相比,H-RDX的热分解表观活化能Ea和活化焓ΔH分别高10.79 kJ·mol^-1和10.81 kJ·mol^-1,撞击和摩擦感度分别降低20%和8%;相同配方下药浆黏度降低41%~45%,药柱密度提高0.6%~3.9%,爆速提高1%~3%,冲击波感度降低10%~14%,表现出更优的工艺性能、爆轰性能及安全性能。
To explore the influence of ordinary hexogen(RDX)and high density spherical RDX on the properties of cast explosives,the crystal morphology,thermal stability and mechanical sensitivity of the two kinds of explosives were evaluated by scanning electron microscopy(SEM),differential scanning calorimeter(DSC)and etc.Taking typical casting formulation as an exam-ple,the influence of RDX type on slurry viscosity,density of cylinders,detonation velocity and shockwave sensitivity was discussed.Results show that high density spherical RDX has smooth surface,few crystal defects and high sphericity.The apparent activation energy and enthalpy of activation of high density spherical RDX is 10.79 kJ·mol^-1 and 10.81 kJ·mol^-1 higher than that of ordinary RDX.The impact and friction sensitivity of high density spherical RDX is 20%and 8%lower than that of ordinary RDX.Comparing with ordinary RDX,the high density spherical RDX-based cast formulation shows 41%-45%and 10%-14%decrease in the slurry viscosity and shockwave sensitivity,together with 0.6%-3.9%and 1%-3%increase in the density of cylinders and detonation velocity,respectively showing a better process properties,detonation properties and safety properties.
作者
姜洪伟
赵雪
芮久后
钱华
刘大斌
JIANG Hong-wei;ZHAO Xue;RUI Jiu-hou;QIAN Hua;LIU Da-bin(School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China;National Supervision and Inspection Center for Industrial Explosive Materials,Nanjing 210094,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2020年第3期223-228,共6页
Chinese Journal of Energetic Materials
