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含能材料  2015 

含咪唑类铅盐催化剂的RDX-CMDB推进剂燃烧性能

DOI: 10.11943/j.issn.1006-9941.2015.01.009

Keywords: 物理化学 改性双基推进剂 燃速 压强指数 含能催化剂

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Abstract:

研究了咪唑类含能铅盐(E-Pb)催化剂含量及与炭黑复配时对RDX-CMDB推进剂的燃速、压强指数及燃烧火焰结构等燃烧性能的影响。分析了含能催化剂和惰性催化剂影响RDX-CMDB推进剂燃烧行为的原因。结果表明, 含有含能催化剂的RDX-CMDB推进剂的燃烧性能优于含惰性催化剂的RDX-CMDB推进剂的燃烧性能。10 MPa下的燃速由不含催化剂的推进剂的11.74 mm·s-1提高至含E-Pb的推进剂的25.36 mm·s-1, 且随E-Pb含量的增加该推进剂的燃速增加。当含能铅盐与炭黑复配时催化效果更佳, 炭黑与含能铅盐质量比为1.5:0.25时, 在4~17 MPa较宽区间出现平台燃烧, 压强指数n<0.25。表明, 含能铅盐对推进剂的燃烧火焰结构、暗区厚度、燃面上的亮点数目等的影响有一定规律性

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