CHINESE JOURNAL OF ENERGETIC MATERIALS
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Properties of High Density Spherical RDX-based Cast Explosives
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1.School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;2.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology,Beijing 100081, China;3.National Supervision and Inspection Center for Industrial Explosive Materials,Nanjing 210094, China

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    Abstract:

    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 example, 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.

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姜洪伟,赵雪,芮久后,等.高致密球形RDX基浇注炸药的性能[J].含能材料,2020,28(3):223-228.
JIANG Hong-wei, ZHAO Xue, RUI Jiu-hou, et al. Properties of High Density Spherical RDX-based Cast Explosives[J]. Chinese Journal of Energetic Materials,2020,28(3):223-228.

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History
  • Received:March 29,2019
  • Revised:July 02,2019
  • Adopted:April 23,2019
  • Online: June 20,2019
  • Published: March 25,2020