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

兵工学报 ›› 2015, Vol. 36 ›› Issue (11) : 2099-2103.

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

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
作者信息 +

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

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

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.

关键词

兵器科学与技术 / 2

Key words

ordnance science and technology / LLM-105 / recrystal / partical size / sensitivity

引用本文

导出引用
徐容, 廖龙渝, 王述存, 张勇. 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. 兵工学报. 2015, 36(11): 2099-2103 https://doi.org/10.3969/j.issn.1000-1093.2015.11.012
XU Rong, LIAO Long-yu, WANG Shu-cun, ZHANG Yong. Influence of Recrystallization Method on Crystal Properties and Performance of LLM-105. Acta Armamentarii. 2015, 36(11): 2099-2103 https://doi.org/10.3969/j.issn.1000-1093.2015.11.012

基金

总装备部预先研究项目(426030202)

参考文献

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