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含能材料  2013 

晶形控制剂对HMX炸药晶体生长影响的实验研究

DOI: 10.3969/j.issn.1006-9941.2013.01.010

Keywords: 物理化学,奥克托今(HMX),晶形控制剂,喷射结晶超细化技术,晶体生长,撞击感度

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Abstract:

为了防止奥克托今(HMX)炸药晶体聚集和长大,以聚乙烯吡咯烷酮(PVP)为晶形控制剂,二甲基亚砜(DMSO)为溶剂,去离子水为非溶剂,采用喷射结晶超细化方法和热干燥方式,研究了PVP的不同添加量对HMX晶体生长的影响。利用场发射扫描电镜(SEM)和傅里叶变换红外光谱(FT-IR)对PVP-HMX的形貌和官能团进行了表征。用标准方法GJB772A-1997测试了其撞击感度。结果表明,PVP的添加量为0.4%时,HMX的晶体粒径分布与热干燥前一致。HMX颗粒为近球形,其粒径分布在1~3μm。HMX红外峰没有出现新的官能团峰。PVP-HMX的特性落高H50比原料HMX提高了248.3%。

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