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兵工学报 ›› 2015, Vol. 36 ›› Issue (11): 2099-2103.doi: 10.3969/j.issn.1000-1093.2015.11.012

• 论文 • 上一篇    下一篇

重结晶方法对26-二氨基-3,5-二硝基吡嗪-1-氧化物晶体特性及性能影响

徐容, 廖龙渝, 王述存, 张勇   

  1. (中国工程物理研究院 化工材料研究所, 四川 绵阳 621900)
  • 收稿日期:2014-08-15 修回日期:2014-08-15 上线日期:2016-02-02
  • 作者简介:徐容(1971—), 女, 副研究员, 硕士
  • 基金资助:
    总装备部预先研究项目(426030202)

Influence of Recrystallization Method on Crystal Properties and Performance of LLM-105

XU Rong, LIAO Long-yu, WANG Shu-cun, ZHANG Yong   

  1. (Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China)
  • Received:2014-08-15 Revised:2014-08-15 Online:2016-02-02

摘要: 2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)是性能优异的耐热炸药,其晶体形状对安全及加工性能有较大影响,重结晶溶剂和方法直接影响所得LLM-105的晶体特性。用二甲基亚砜和65%硝酸为溶剂,分别采用降温法、正相和反相溶剂/非溶剂法及超声波辅助结晶的方法,对LLM-105进行了重结晶研究。研究结果表明:无论用何种溶剂,直接降温法重结晶得到的LLM-105,晶体形状均不规则;用溶剂/非溶剂正相滴加法在超声作用下可以得到表面光滑、无孪晶的颗粒状晶体,纯度达98%以上;用溶剂/非溶剂反相滴加法也可以得到表面光滑、无孪晶的规则颗粒状晶体,纯度达98%以上;用65%浓度的HNO3水溶液反相滴加重结晶得到的LLM-105晶体平均粒径适中,粒度跨度小,撞击感度最低。获得了纯度和晶型好,感度大幅度降低LLM-105的制备方法:65% HNO3水溶液反相滴加法。

关键词: 兵器科学与技术, 2

Abstract: LLM-105 is recrystallized in DMSO and 65% HNO3 using falling temperature method, direct and inverse solvent/nonsolvent precipitation methods and supersonic-assisted recrystallization method, respectively. The results show that LLM-105 crystal shape obtained using falling temperature method is anomalistic in any solvents. The smooth-faced granular crystals without twin crystal are achieved using supersonic-assisted recrystallization method. The purity is up to 98%. LLM-105 particles obtained in 65% HNO3 by inverse precipitation have moderate size, small span of particle size and lower impact sensitivity.

Key words: ordnance science and technology, LLM-105, recrystal, partical size, sensitivity

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