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含能材料  2012 

含偶氮四唑胍的改性双基推进剂性能

DOI: 10.3969/j.issn.1006-9941.2012.03.006

Keywords: 材料科学,气体发生剂,改性双基推进剂,偶氮四唑胍盐,低燃温

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Abstract:

采用浇铸工艺制备了含偶氮四唑胍盐(GZT)的RDX-CMDB推进剂,系统地研究了含GZT的RDX-CMDB推进剂的能量性能、燃烧性能和热安全性能等。理论计算和实验研究结果表明:RDX-CMDB推进剂的比冲、爆热和燃温随GZT含量的增加而降低,15%的GZT使推进剂的比冲降低了29.2s,爆热降低了1248kJ·kg-1,燃烧温度降低了800K;RDX-CMDB推进剂的成气量随GZT含量的增加而增加,15%的GZT使成气量增加了10.73mol·kg-1;GZT使RDX-CMDB推进剂燃烧更完全,且高温下(200℃以上)更容易燃爆,但对推进剂在100℃下的热安全性能无明显影响;对于不含有机铅铜催化剂的RDX-CMDB推进剂,GZT使推进剂燃速升高,压强指数降低,15%的GZT使推进剂7MPa下的燃速提高了1mm·s-1,使7~10MPa间的压力指数由0.86降低到0.70;对于含有机铅铜催化剂的RDX-CMDB推进剂,GZT使推进剂的压力指数升高,燃速降低,15%的GZT使推进剂7MPa下的燃速下降了3mm·s-1,7~10MPa间的压力指数由0.47上升到0.69。热行为研究表明,GZT表现出一单独的分解失重过程。

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