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Acta Armamentarii ›› 2018, Vol. 39 ›› Issue (7): 1291-1298.doi: 10.3969/j.issn.1000-1093.2018.07.006

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Preparation and Performances of Nano-HMX and TNT Melt-cast Explosives Based on 3D Printing Technology

XIAO Lei1, WANG Qing-hua2, LI Wan-hui3, LIU Qiao-e4, HAO Ga-zi1, GAO Xiang-dong4, KE Xiang1, LIU Jie1, JIANG Wei1, QIAO Yu5, TAN Cheng5   

  1. (1.National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China;2.Military Representative Office of the PLA in Shanxi Jiangyang Chemical Engineering Co., Ltd., Taiyuan 030000, Shanxi, China;3.Shanxi North Xing'an Chemistry Industry Co., Ltd., Taiyuan 030000, Shanxi, China;4.Research Institute, Gansu Yinguang Chemical Industry Group Co., Ltd., Baiyin 730900, Gansu, China;5.Jiangsu Dunchao Electronics Co., Ltd., Changzhou 213000, Jiangsu, China)
  • Received:2017-12-05 Revised:2017-12-05 Online:2018-08-24

Abstract: 3D printing technology is applied in the preparation of melt-cast explosives to solve the problems existing in traditional melt-cast explosives, such as more defects, low density, and poor mechanical properties, etc. An independently developed melt-cast explosive 3D printing principle prototype was used to prepare nano-cyclotetramethylenete-tranitramine (HMX)/2,4,6-trinitrotoluene (TNT)-based melt-cast explosives by selecting the melt-cast explosive formulas and adjusting the process parameters. And the microscopic structures, density, uniformity, compressive strength and detonation velocity of two kinds of melt-cast explosives prepared by 3D printing technology and traditional casting technology are characterized and compared. The results show that 3D printing melt-cast explosives have more compacting internal structures with the density of 1.65 g/cm3, the compressive strength of 5.56 MPa, and the detonation velocity of 7 143 m/s. The density, compressive strength and detonation velocity of 3D printing melt-cast explosive are improved by 2.0%; 273% and 2.1%, respectively, compared to the traditionally prepared melt-cast explosive. Key

Key words: energeticmaterial, melt-castexplosive, 3Dprinting, compressivestrength, detonationvelocity

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