典型储氢材料对RDX炸药爆轰性能和热稳定性的影响
作者单位:
1.易普力向红（湖南）机械化工有限责任公司;2.深圳金源恒业科技有限公司;3.山东泰山民爆器材有限公司;4.安徽理工大学化工与爆破学院
Effects of Typical Hydrogen Storage Materials on Detonation performance and Thermostability of RDX
Affiliation:
1.Yipri Xianghong (Hunan) Machinery Chemical Co., LTD;2.Shenzhen Jinyuan Hengye Technology Co., LTD;3.Shandong Taishan civil explosive equipment Co., LTD;4.Chemical Engineering and Blasting, Anhui University of Science and Technology
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摘要:为了研究典型储氢材料对RDX炸药爆轰性能和热稳定性的影响,对添加不同储氢材料(MgH2、TiH2、ZrH2)的RDX基温压炸药的爆轰特性和热分解参数进行了实验研究。实验结果表明,四种温压炸药样品的冲击波峰值压力、正相持续时间和正冲量参数的变化规律为RDX/MgH2>RDX/TiH2>RDX>RDX/ZrH2。其中,RDX/MgH2温压炸药的冲击波峰值压力和正冲量最大,分别为27.8 kPa和8.79 Pa·s,与纯RDX炸药相比分别提升了3.7%和5.5%。添加三种储氢材料的温压炸药样品的热分解终止温度分别为211.5、220.3和223.1 ℃,其中,相较于纯RDX炸药样品(218.5 ℃),RDX/MgH2样品降低了7 ℃,而RDX/TiH2和RDX/ZrH2样品分别提高了1.8和4.6 ℃。另外,三种储氢材料的温压炸药样品的活化能分别为93.6、104.1和108.5 kJ/mol,其中,相较于纯RDX炸药样品(103.3 kJ/mol),RDX/MgH2样品降低了9.7 kJ/mol,而RDX/TiH2和RDX/ZrH2样品分别升高了0.8和5.2 kJ/mol。
Abstract:To investigate the effects of typical hydrogen storage materials on the detonation performance and thermostability of RDX, the detonation characteristics and thermal decomposition parameters of RDX based thermobaric explosive with different hydrogen storage materials (MgH2, TiH2, ZrH2) were experimentally studied. The experimental results showed that the explosion peak pressure, positive phase duration and positive impulse parameters of the 4 kinds of thermobaric explosives were RDX/MgH2>RDX/TiH2>RDX>RDX/ZrH2. Among them, the peak pressure and positive impulse of RDX/MgH2 thermobaric explosive were the largest, which are 27.8 kPa and 8.79 Pa·s, respectively, which were 3.7% and 5.5% higher than that of RDX. The thermal decomposition termination temperatures of thermobaric explosive samples added with 3 kinds of hydrogen storage materials were 211.5, 220.3 and 223.1 ℃, respectively. Compared with RDX (218.5 ℃), RDX/MgH2 decreased by 7 ℃. RDX/TiH2 and RDX/ZrH2 were increased by 1.8 and 4.6 ℃ respectively. In addition, the activation energies of the thermobaric explosives of the 3 kinds of hydrogen storage materials were 93.6, 104.1 and 108.5 kJ/mol, respectively. Compared with RDX (103.3 kJ/mol), the RDX/MgH2 decreased by 9.7 kJ/mol. RDX/TiH2 and RDX/ZrH2 increased by 0.8 and 5.2 kJ/mol, respectively.
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