碳纳米管和碳黑掺杂RDX和HMX的反应性光声谱

Reactivity Photoacoustic Spectra of RDX and HMX Doped with Carbon Nanotubes and Carbon Black

用光声-光电测试法和差示扫描量热法(DSC)研究了激光作用下碳黑(CB)和碳纳米管(CNTs)掺杂RDX和HMX的反应性光声谱。结果表明,在一定的入射激光能量下,纯RDX和HMX的反应性光声信号很弱,适量掺杂CNTs和CB均可提高二者的反应性光声强度;同一样品,激光能量越大光声信号越强;入射激光能量和掺杂物都相同的条件下,掺杂量越大光声信号越强;在激光入射能量和掺杂量相同的条件下,RDX掺杂CNTs的光声信号强,HMX则表现为掺杂CB光声信号强。DSC分析结果显示,掺杂后RDX和HMX的放热量比纯品的高,掺杂CNTs的放热量大于掺杂CB。

Reactivity photoacoustic spectra of RDX and HMX doped by carbon black （CB） and carbon nanotubes （CNTs） were studied by photoacoustic photoelectric method and differential scanning calorimetry （DSC）. The re-sults showed that at the constant laser energy, the photoacoustie signals of pure RDX and HMX were very weak, but the intensity of signal was improved when CB and CNTs were doped. For the same sample, the greater the laser energy, the stronger the signal. Under the same laser energy and dopant, the larger the doping amount, the stron-ger the signal, and the signal was stronger for CNTs doped RDX and CB doped HMX. The analysis of DSC revealed that the heat release of doped sample was larger than than of pure sample. The heat release of RDX and HMX doped with CNTs is larger that that doped with CB.