纳米Bi_2O_3·SnO_2的制备及对RDX热分解特性的影响  

Synthesis of Nanocomposite Bi_2O_3·SnO_2 and Its Effect on Thermal Decomposition of RDX

作　　者：洪伟良[1] 赵凤起[2] 刘剑洪[1] 田德余[1] 罗仲宽[1] 刁立惠[1] 

机构地区：[1]深圳大学师范学院化生系,广东深圳518060 [2]西安近代化学研究所,陕西西安710065

出　　处：《火炸药学报》2003年第1期37-39,46,共4页Chinese Journal of Explosives & Propellants

基　　金：国防科技重点实验室基金项目(00JS35.3.2.QT5101)

摘　　要：为了研究纳米Bi2O3·SnO2对推进剂燃烧的催化作用,以BiCl3和SnCl4·5H2O为原料,采用共沉淀法制备出纳米Bi2O3·SnO2粉体,产物的粒径约为5nm。用DSC测试了纳米Bi2O3·SnO2对RDX热分解特性的影响。结果表明,纳米Bi2O3·SnO2对RDX热分解有明显的催化效果,使RDX的分解峰温前移了13.7℃,放热量增加665J/g,活化能降低49.42kJ/mol。Nanocomposite oxide Bi2O3·SnO2 was synthesized by coprecipitation method using BiCl3 and SnCl4·5H2O as the reactant. The particle size, crystal form and phase were determined with XRD and TEM. Average particle size of samples were about 5 nm. The effect of nanocomposite oxide Bi2O3·SnO2 on the thermal decomposition characteristics of RDX was investigated by DSC. The results show that due to the effect of nanocomposite oxide Bi2O3·SnO2, the peak temperature of thermal decomposition of RDX shifts 13.7℃ downward, the decomposite enthalpy ΔH of RDX increases 665 J/g(about 59.9%), and the apparent activation energy of the thermal decomposition of RDX decreases 48.42 kJ/mol.

关 键 词：纳米氧化铋·氧化锡 制备方法 RDX 黑索今 热分解 实验 共沉淀法 推进剂 催化作用 

分 类 号：TB383[一般工业技术—材料科学与工程] V512[航空宇航科学与技术—航空宇航推进理论与工程]