HMX/TATB高聚物粘结炸药的热性能研究

Study on Thermal Properties of Polymer Bonded HMX/TATB

用DSC和小药量固体炸药热爆炸临界温度法测定了以HMX/TATB为基的高聚物粘结炸药的热性能 ,研究了TATB、含氟粘结剂、铝粉、石蜡等组分对HMX热感度的影响。结果表明 :单质TATB炸药只有一个放热峰 ,而TATB炸药中加入 5%粘结剂后有两个放热峰。在HMX/TATB高聚物粘结炸药配方中 ,当HMX含量达到 4 0 %以上时 ,DSC峰温与HMX峰温接近。TATB含量对HMX的 10 0 0s热爆炸临界温度有较大影响 ,当TATB含量在 80 %左右时 ,热爆炸临界温度显著提高。

The thermal properties of polymer bonded HMX/TATB are studied by using DSC and critical temperature determination,and the influence of additives on HMX′s thermal sensitivity,such as TATB,binder,Al powder and wax is discussed as well. The results indicate that TATB alone gives only one exothermic peak whereas TATB containing 5% binder two exothermic peak. When HMX content is over 40%,the DSC exothermic peak temperature of polymer bonded HMX/TATB approaches to that of HMX. The content of TATB in formulation obviously affects the critical temperature ( T cr ) of thermal explosion in 1 000 s. When TATB content is about 80%, T cr increases greatly.