NC/Bu-NENA基推进剂性能研究(Ⅰ):推进剂能量及燃烧性能  

Study on Properties of NC/Bu-NENA Based Propellant′s(Ⅰ):Energy and Combustion Properties of Propellant

作　　者：袁志锋[1,2] 胡松启[1] 韩进朝 王印 王瑛[2] 胡义文 李恒 栗磊[2] 张军[2] 赵凤起[2] YUAN Zhi-feng;HU Song-qi;HAN Jin-chao;WANG Yin;WANG Ying;HU Yi-wen;LI Heng;LI Lei;ZHANG Jun;ZHAO Feng-qi(Science and Technology on Combustion,Internal Flow and Thermo-Structure Laboratory,Northwestern Polytechnical University,Xi′an 710072,China;Xi′an Modern Chemistry Research Institute,Xi′an 710065,China)

机构地区：[1]西北工业大学燃烧、热结构与内流场重点实验室,陕西西安710072 [2]西安近代化学研究所,陕西西安710065

出　　处：《火炸药学报》2022年第6期884-890,共7页Chinese Journal of Explosives & Propellants

基　　金：国家自然科学基金(No.22105157)。

摘　　要：为了研究丁基-硝氧乙基硝胺(Bu-NENA)对NC基推进剂能量及燃烧性能的影响,通过俄罗斯Real软件计算了Bu-NENA对推进剂的能量性能的影响;通过吸收-压延的方法制备了推进剂样品,测试了推进剂的密度、爆热、比容、点火延迟、燃速,计算了压强指数;通过燃烧波、火焰照片以及熄火表面探讨了Bu-NENA对推进剂燃烧性能影响的机理。结果表明,在NC基推进剂中Bu-NENA替代NG使能量下降,但是产气量增加,使推进剂的燃速大幅度下降,2MPa下燃速降幅75%以上,20MPa下燃速降幅64%以上;压强指数提升,NC/NG基推进剂用部分催化剂可能对NC/Bu-NENA基体系失效;推进剂的点火延迟时间增加;推进剂的燃速大幅度降低的原因可能是因为Bu-NENA在燃烧时挥发吸热以及燃温降低带来的热反馈降低。In order to investigate the influence of N-butyl-N-nitratoethylnitramine(Bu-NENA)on the energy and combustion properties of NC based propellants,energy properties was theoretically calculated by Russian Real software.The propellant samples were prepared by the method of absorption-extrusion technique.The density,detonation heat,specific volume,ignition delay time,burning rate were tested and the pressure exponent were calculated.The mechanism of the influence of Bu-NENA on the combustion performance of the propellant was analyzed by combustion waves,flame photographs and morphology of flameout surface.The results showed that the replacement of NG by Bu-NENA in NC based propellant reduces energy but increases gas production.The burning rate of propellants can be significantly reduced,with the decrease of more than 75%for 2 MPa and the decrease of more than 64%for 20 MPa.The pressure exponent was increased.Some catalysts used for NC/NG based propellants may fail in NC/Bu-NENA based system.The propellant ignition delay time is increased.The burning rate of the propellant is greatly reduced because of the volatilization of Bu-NENA during combustion and the decrease of thermal feedback caused by the decrease of combustion temperature.

关 键 词：物理化学 Bu-NENA NC基推进剂 能量 燃速 压强指数 点火延迟 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O64[理学—物理化学]