摘要
为了降低HMX的感度,采用喷雾干燥工艺制备了HMX/F_(2602)纳米含能颗粒,其比例为:HMX∶F_(2602)=97∶3;并将喷雾干燥法制备的HMX/F_(2602)纳米颗粒与同等条件下制备的HMX/NC、HMX/Estane5703进行对比表征。采用SEM、XPS、XRD、DSC,以及撞击感度仪对原料HMX、HMX/F_(2602)纳米颗粒进行表征。结果表明:制备的HMX/F_(2602)纳米颗粒的热稳定性、撞击感度均优于同等条件下的HMX/NC、HMX/Estane5703颗粒。制备出的HMX/F_(2602)纳米颗粒呈规则的球形,粒径0.5~4μm之间;其晶型保持不变。原料HMX、HMX/F_(2602)纳米颗粒的活化能分别为523.16 kJ/mol,469.89 kJ/mol;热爆炸临界温度分别为279.34℃,279.20℃,特性落高分别为17.6 cm,82.2 cm。
In order to reduce the sensitivity of HMX,HMX/F2602 nano particles were prepared by spray drying,the proportion is HMX： F2602= 97： 3. The HMX/F2602 nano particles prepared by spray drying method were compared with HMX/Estane5703 and HMX/F2602 which prepared under the same conditions. HMX raw material and HMX/F2602 nano particles were analyzed by SEM,XRD,DSC,and impact sensitivity tester. The results show that the thermal property and the impact sensitivity of HMX/F2602 nano particles were prepared have advantages than HMX/NC and HMX/Estane5703 particles under the same conditions,the HMX/F2602 nano particles were prepared is spherical,the particle size between 0. 5 - 4 μm,the crystal remains unchanged,the activation energy of HMX raw materials and HMX/F2602 nano particles were 523. 16 kJ/mol,469. 89 kJ/mol,the critical temperature of thermal explosion were279. 34 ℃,279. 20 ℃,the characteristic drop heights were 17. 6 cm,82. 2 cm.
出处
《科学技术与工程》
北大核心
2017年第16期196-200,共5页
Science Technology and Engineering
基金
武器装备预先研究项目资助
