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含能材料  2009 

亚微米HNS炸药的形貌控制研究

DOI: 10.3969/j.issn.1006-9941.2009.02.015

Keywords: 材料科学,高速流体撞击效应,预成膜效应,双流体喷嘴,晶形控制剂,溶剂非溶剂法,亚微米HNS

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Abstract:

建立了溶剂非溶剂双流体喷嘴辅助重结晶工艺。考察了该工艺中非溶剂温度、pH值及添加不同的晶形控制剂对制备亚微米HNS晶体的形貌的影响。结果表明:非溶剂温度由25℃升高到55℃后,HNS晶体形貌由短片状变为细长片状;pH值由酸性变化到中性再到碱性时,亚微米HNS的晶体形貌经历椭球状、短片状、棒状的系列变化,粒度分布分别处于50~300nm、50~500nm、50~600nm;白糊精和羧甲基纤维素钠作为晶形控制剂修饰后的亚微米HNS晶体形貌分别椭圆片状和长棒状,粒度分布分别处于50~300nm、50~600nm。

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