晶形控制剂对HMX炸药晶体生长影响的实验研究  

Experimental Study on Effect of Modifier PVP on Crystal Growth of HMX

作　　者：张小连[1] 张景林[1] 王金英[1] 

机构地区：[1]中北大学化工与环境学院,山西太原030051

出　　处：《含能材料》2013年第1期44-48,共5页Chinese Journal of Energetic Materials

摘　　要：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%。In order to prevent the aggregation and growth of HMX explosive crystal , the influence of different addition of PVP on shapes and growth of HMX crystals was studied by the spray-crystal method and heat dying,using polyvinyl pyrrolidone as reagent of shape control sDMSO as solvent and deionized water as anti-solvent. The characterization and functional group of PVP-HMX particles were researched by the field emission scanning electron microscopy （SEM） and Fourier Transform Infrared Spectroscopy （FT-IR）. The impact sensitivity of PVP-HMX was tested by standardization method GJB772A-1997. The results show that the crystal size distribution of HMX is the same as before heat drying when PVP addition was 0.4%. The particle size of HMX is nearly spherical,and size distribution is under control of 1 -3 μm. HMX has not appeared new functional group peak. In comparison with the raw materials HMX, the characteristic drop height of impact sensitivity H50 of PVP-HMX increases by 248.3 %.

关 键 词：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 

分 类 号：TQ560.1[化学工程—炸药化工]