Effect of Drying on Particle Size and Sensitivities of Nano hexahydro-1,3,5-trinitro-1,3,5-triazine  

作　　者：Jie LIU Wei JIANG Jiang-bao ZENG Qing YANG Yu-jiao WANG Feng-sheng LI 

机构地区：[1]National Special Superfine Powder Engineering Research Center of China,Nanjing University of Science and Technology

出　　处：《Defence Technology（防务技术）》2014年第1期9-16,共8页Defence Technology

摘　　要：Nano hexahydro-1,3,5-trinitro-1,3,5-triazine(RDX) was prepared using a bi-directional rotation mill and dried under different conditions(liquid, temperature and drying). It shows that the samples cake seriously and the particles grow up obviously by ordinary drying in different liquids at 70 C, which occurs again after vacuum drying. With the increase of temperature, the degrees of caking and aggregation are enhanced.Well dispersed sample maintaining constant particle size is extracted by supercritical drying, especially freeze drying. Furthermore, the mechanical sensitivities of I-RDX, O-RDX and F-RDX, of which the average sizes are 88.03 mm, 15.32 mm and 0.16 mm, respectively, are evaluated. Compared with I-RDX, the friction, impact and shock sensitivities of O-RDX are slightly lower. However, the friction, impact and shock sensitivities of F-RDX are reduced by 30%, 99.0% and 59.9%, respectively.Nano hexahydro-l,3,5-trinitro-l,3,5-triazine （RDX） was prepared using a bi-directional rotation mill and dried under different conditions （liquid, temperature and drying）. It shows that the samples cake seriously and the particles grow up obviously by ordinary drying in different liquids at 70 ℃, which occurs again after vacuum drying. With the increase of temperature, the degrees of caking and aggregation are enhanced. Well dispersed sample maintaining constant particle size is extracted by supercritical drying, especially freeze drying. Furthermore, the me- chanical sensitivities of I-RDX, O-RDX and F-RDX, of which the average sizes are 88.03 μm, 15.32 μm and 0.16 μm, respectively, are evaluated. Compared with I-RDX, the friction, impact and shock sensitivities of O-RDX are slightly lower. However, the friction, impact and shock sensitivities of F-RDX are reduced by 30%, 99.0% and 59.9%, respectively.

关 键 词：真空干燥 三硝基 敏感性 粒子尺寸 纳米 三嗪 氢 超临界干燥 

分 类 号：O621.2[理学—有机化学]