摘要
为了研究晶体缺陷对炸药性能的影响 ,采取急速重结晶手段 ,获得了缺陷类型和数目不同的HMX重结晶样品。利用SEM观察了样品的缺陷情况 ,并研究了晶体缺陷对炸药感度和热安定性的影响。HMX经过重结晶后 ,其 5s延滞期爆发点降低了 5 1℃～ 5 4℃ ,其热分解起始温度及相应的表观活化能明显降低 ,表明晶体缺陷使HMX的热感度增加 ,热安定性降低。
HMX crystals with defects of different types and populations were prepared by fast recrystallization. These obtained crystals were used to study the influences of crystal defects on thermal sensitivity and stability of HMX by explosion point measurement and thermal analysis. The morphology and defects of HMX crystals were observed by TEM technique. Experimental results show that the explosion point(5 s)of HMX decreases by 51～54 ℃,and its thermal decomposition initial temperature and apparent activation energies also decline remarkably due to the existing defects in the crystals. It could be concluded that the crystal defects would deteriorate both the sensitivity to heat and the thermal stability of HMX.
出处
《含能材料》
EI
CAS
CSCD
2003年第3期123-126,共4页
Chinese Journal of Energetic Materials
基金
中国工程物理研究院科学基金资助项目 ( 2 0 0 0Z0 3 0 1)
