| 摘要: |
| 采用热分析、微热电偶技术、燃速测试、熄火表面的扫描电镜观测等实验方法 ,研究了不同类型的复合催化剂对PDADN RDX CMDB推进剂燃烧特性的影响。结果发现 ,邻苯二甲酸铅 /雷索辛酸铜 /炭黑与雷索辛酸铅铜 /炭黑两类复合催化剂可较好地改善PDADN RDX CMDB推进剂的燃烧特性 ,明显降低其压强指数且同时提高燃速 ,基于实验现象的观测结果分析 ,提出了“气泡 凝聚相反应”理论 ,解释了该类推进剂在中低压区发生的“超速燃烧”现象。 |
| 关键词: 硝胺推进剂 改性双基推进剂 燃烧催化剂 催化机理 |
| DOI： |
| 分类号:V512.2 |
| 基金项目: |
|
| Catalysis combustion property and mechanism of PDADN-RDX-CMDB propellant |
|
LI Shu-fen1, WANG Jin1, ZHAO Feng-qi2, WANG Ying2, XU Yu2, LI Shang-wen2
|
|
1.Dept. of Chemical Physics,Univ of Science and Technology of China,Hefei 230026,China;2.Xi’an Modern Chemistry Research Inst.,Xi’an 710065,China
|
| Abstract: |
| In order to study effects of several kinds of composite catalysts on the combustion behavior of PDADN-RDX-CMDB propellant,different means such as thermogravimetric loss,microthermo couple,burning-rate experiment and SEM of quenched sample surface were adopted.The results show that two kinds of composite catalysts,which are ΦPb-βCu-CB and βPbCu-CB,can obviously improve the combustion behavior of PDADN-RDX-CMDB propellant,combustion pressure exponent are decreased and burning-rate are increased.The “bubble-condensation reaction” theory are proposed to explain “super rate combustion” phenomenon of PDADN-RDX-CMDB with composite catalysts propellant. |
| Key words: Nitramine propellant Modified double base propellant Combustion catalyst Catalysis mechanism |
