CL-20/TNT共晶炸药的制备、结构与性能  

Preparation,Structure and Properties of CL-20/TNT Cocrystal

作　　者：杨宗伟[1] 张艳丽[1] 李洪珍[1] 周小清[1] 聂福德[1] 李金山[1] 黄辉[1] 

机构地区：[1]中国工程物理研究院化工材料研究所,四川绵阳621900

出　　处：《含能材料》2012年第6期674-679,共6页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金面上项目(No.11072225);中物院发展基金面上项目(No.2010B0302040);中国博士后基金(No.2012M511944)资助

摘　　要：通过溶液共结晶法制得CL-20/TNT共晶炸药,采用扫描电镜(SEM)和X射线单晶衍射对其形貌和结构进行了表征,该晶体属于正交晶系,Pbca空间群,晶胞参数:a=0.9735(2)nm,b=1.9912(6)nm,c=2.4695(6)nm,α=β=γ=90°,V=4.787 nm3,Z=8。采用差示扫描量热(DSC)法分析了共晶炸药的热分解,并测定了其撞击感度,结果表明,CL-20/TNT共晶炸药在180～275℃间放热分解,并将TNT熔点显著提高50℃左右;共晶炸药撞击感度较低,并将CL-20撞击感度明显降低87%%。A novel CL-20/TNT cocrystal explosive was prepared by cocrystallization in solution, and its morphology was characterized by scaning electron microscopy （SEM）, and the crystal structure was determined using single crystal X-ray. Results show that the crystal is orthorhombic, space group Pbca with crystal parameters of a =0.9735（2） nm, b=1.9912（6） nm, c=2.4695（6） nm, α=β=γ=90°, V = 4. 787 nm3, Z = 8. The thermal decomposition and impact sensitivity of the product were measured by differential scanning calorimetry （DSC） and sensitivity test, respectively. The results reveal that the exothermic decomposition of CL-20/TNTcocrystal explosive occurs in the temperature range of 180 -275 ~, and the melting point of TNT significantly increases by about 50 ℃. CL-20/TNT cocrystal has lower impact sensitivity and the impact sensitivity of CL-20 obviously reduces by 87%.

关 键 词：物理化学 共晶炸药 CL-20 TNT 晶体结构 性能 

分 类 号：TQ560.6[化学工程—炸药化工]