燃烧稳定剂对RDX-CMDB推进剂热分解特性的影响  

Influence of Combustion Stabilizers on the Thermal Decomposition Characteristics of RDX-CMDB Propellant

作　　者：陈雪莉[1] 王瑛[1] 张佩[1] 程丽萍[1] 李猛[1] 张丽涵[1] 

机构地区：[1]西安近代化学研究所燃烧与爆炸技术重点实验室,陕西西安710065

出　　处：《火炸药学报》2012年第5期70-73,90,共5页Chinese Journal of Explosives & Propellants

基　　金：火炸药燃烧国防科技重点实验室基金项目资助(9140C35030706)

摘　　要：用高压DSC和Π型钨铼微热电偶实验研究了5种燃烧稳定剂(Al2O3、ZrB2、ZrO2、SiC、WC)对RDX-CM-DB推进剂的热分解特性及燃烧波温度分布的影响。结果表明,随着压力的升高,RDX-CMDB推进剂的两个特征分解峰温降低,分解热增加。相同压力下,5种燃烧稳定剂对两个特征峰温的影响不大,但对分解热影响显著,其影响程度为ZrO2和WC最大(甚至能将5MPa下的分解热提高28%以上),Al2O3次之,ZrB2、SiC最小;不同燃烧稳定剂对RDX-CMDB推进剂燃烧的作用区间不同,ZrO2和WC主要作用于固相反应区及嘶嘶区,Al2O3则作用于气相区,使作用区域的放热量及温度梯度明显提高。The effects of five combustion stabilizers including Al2O3, ZrB2, ZrO2, SiC and WC on the thermal decomposition characteristics and the combustion wave temperatures of RDX-CMDB propellant were studied by PDSC and 11 mode miniature W/Rt thermocouples. The results show that as pressure increasing, the two decomposition peak temperatures in RDX-CMDB propellant decrease and the decomposition heat increases. Under the same pressure, the influence of the five combustion stabilizers on the two decomposition peak temperatures is inconspicu ous, and the influence on the decomposition heat is obvious. The influence of ZrO2 and WC is the most obviously, and the deeomposition heat can be enhanced more than 28 percent at the pressure of 5 MPa. The influence of Al2O3 is slightly apparent and the influence of ZrB2 and SiC is unapparent. The combustion positions of the five combustion stabilizers acting on the RDX-CMDB propellant are different. The ZrO2 and WC stabilizers mainly act on the con dense phase reaction zone and fizz zone of RDX-CMDB propellant, while the Al2O3 stabilizer acts on the gas phase zone of RDX-CMDB propellants.

关 键 词：物理化学 燃烧稳定剂 热分解 燃烧机理 RDX-CMDB推进剂 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V512[航空宇航科学与技术—航空宇航推进理论与工程]