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研究论文

氰基硼氢金属配合物自燃燃料设计制备与性能研究

戴磊a, 葛明成a, 钟野a, 梁琳娜b, 蒋海燕c, 张建国a, 李志敏a,*   

  1. a北京理工大学 爆炸科学与安全防护全国重点实验室 北京 100081;
    b北方科技信息研究所 北京 100089;
    c西安近代化学研究所 西安 710065
  • 投稿日期:2025-07-18
  • 基金资助:
    国家自然科学基金(22175025).

Design, Preparation and Performance of Cyanoborohydride Based Coordination Compounds for Hypergolic Fuels

Dai Leia, Ge Mingchenga, Zhong Yea, Liang Linnab, Jiang Haiyanc, Zhang Jianguoa, Li Zhimina,*   

  1. aState Key Laboratory of Explosion Science and Safety Protection, Beijing Institute of Technology, Beijing 100081, China;
    bNorth Institute of Science and Technical Information, Beijing 100089, China;
    cXi'an Modern Chemistry Research Institute, Xi'an 710065, China
  • Received:2025-07-18
  • Contact: *E-mail: lizm@bit.edu.cn
  • Supported by:
    National Natural Science Foundation of China (22175025)

固液混合自燃推进剂在空间动力系统中有良好的应用前景,为探索新型自燃固体燃料,以Co(II)、Ni(II)为中心金属离子,1-甲基咪唑、1-甲基四唑为配体,氰基硼氢根为阴离子合成了4种金属配合物自燃燃料MCCHFs 1-4,准确测定出其晶体结构,并对它们的热行为、机械感度、自燃点火燃烧和能量性能进行了详细研究。结果表明:4种配合物的热分解峰温在152.4-176.3 ℃之间,MCCHF-1和MCCHF-4表现出一定的机械刺激敏感性(IS:8 J,17 J;FS:288 N,216 N),MCCHF-2和MCCHF-3对机械刺激钝感(IS>40 J,FS>360 N);4种配合物均能与白烟硝酸发生自燃点火反应,点火延迟时间处于2 ms-57 ms范围,其中MCCHF-1表现最佳,仅为2 ms;燃烧热值以MCCHF-2最高,质量能量密度为25.41 kJ·g-1,体积能量密度为32.17 kJ·cm-3,MCCHF-1、MCCHF-4与HNO3、N2O4、H2O2三种液体氧化剂组合,表现出良好的比冲性能,其中与H2O2组合的推进剂性能最佳,真空比冲高达268.37 s,高于偏二甲肼(258 s)等传统自燃燃料。氰基硼氢阴离子的高活性金属配合物自燃燃料作为一种新型自燃固体燃料,有望推动固液推进剂技术发展。

关键词: 推进剂, 含能配合物, 自燃燃料, 点火延迟时间, 氰基硼氢根

Solid-liquid hybrid hypergolic propellants have potential application in space power systems, in order to explore novel hypergolic fuels, four metal complex hypergolic fuels MCCHFs 1-4 were designed and synthesized by using Co(II) and Ni(II) as the central metal ions, 1-methylimidazole and 1-methyltetrazolium as ligands, and cyano-borohydride as the anion. The crystal structures of these complexes were accurately determined, and their thermal behavior, mechanical sensitivities, hypergolic and energetic performances were studied in detail. The results show that the peak temperatures of the thermal decomposition of the four complexes were in the range of 152.4-176.3 ℃, MCCHF-1 and MCCHF-4 exhibit mechanical stimulation sensitivity (IS: 8 J, 17 J; FS: 288 N, 216 N), MCCHF-2 and MCCHF-3 are insensitive to mechanical stimulation (IS>40 J, FS>360 N). The four compounds are all able to react with white fuming nitric acid by spontaneous ignition, and the ignition delay time are in the range of 2 ms-57 ms, with MCCHF-1 performing the best of 2 ms. The heat of combustion of MCCHF-2 is the highest, with a mass energy density of 25.41 kJ·g-1 and a volumetric energy density of 32.17 kJ·cm-3. MCCHF-1, MCCHF-4 with HNO3, N2O4, and H2O2 three liquid oxidizers, show good specific impulse performance, in which the propellant combined with H2O2 has the best performance, with a vacuum specific impulse as high as 268.37 s, which was higher than that of the traditional spontaneous combustion fuels, such as meta-di-methylhydrazine (258 s). As a new type of hypergolic solid fuel, the active metal complexes based on cyanoborohydride anion are expected to promote the development of solid-liquid propellant technology.

Key words: Propellants, Energy Complexes, Hypergolic Fuels, Ignition Delay Time, Cyanoborohydride