CHINESE JOURNAL OF ENERGETIC MATERIALS
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高活性配合物及其复合点火药剂的制备与性能
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北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081

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国家自然科学基金资助(21805008)


Preparation and Performances of Active Coordination Compounds and Their Composite Ignition Powders
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State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

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    摘要:

    以氰基硼氢根(CBH)为阴离子、1-乙烯基咪唑(VIM)为配体,过渡金属Co、Mn、Ni为中心离子制备出3种具有高还原活性的含能配合物,通过X-射线单晶衍射仪准确测定其晶体结构,3种含能配合物的分子式分别为Co(VIM)4(CBH)2、Mn(VIM)4(CBH)2、Ni(VIM)4(CBH)2。对3种配合物的热分解性、燃烧热值和机械感度进行了测试。结果表明,3种配合物均具有较高的燃烧热值(26.5~29.1 kJ·g-1),较低的摩擦感度(>360 N)和撞击感度(>40 J)。与白烟硝酸的点火试验表明,3种配合物均能发生自燃反应,且点火延迟时间较短(4~13 ms),证实了配合物的高还原活性。为探究高活性配合物在火工药剂方面的应用,分别将3种配合物与溴酸钠以1∶7的质量比混合,获得3种新型复合点火药,并用电热丝对其进行了点火测试,3种复合药剂被电热丝点燃后均能持续燃烧,产生较大的火焰。结果表明,高活性配合物燃料与氧化剂混合所制得的复合药剂具有作为新型点火药的潜力。

    Abstract:

    Three energetic coordination compounds with strong reducibility were prepared with cyanoborohydride (CBH) as anion, 1-vinyl imidazole (VIM) as ligand and transition metals Co, Mn and Ni as central ions. The crystal structures were determined by single crystal X-ray diffraction and their molecular formulas are Co(VIM)4(CBH)2, Mn(VIM)4(CBH)2 and Ni(VIM)4(CBH)2, respectively. The thermal decomposition performance, oxygen bomb calorimetry and mechanical sensitivities of the complexes were tested. The results show that the complexes have high burning calorific capacity (26.5-29.1 kJ·g-1), low friction sensitivity (>360 N) and impact sensitivity (>40 J). Hypergolic testing with white fuming nitric acid shows that the complexes can combust spontaneously, and the ignition delay time is short (4-13 ms), which confirm the high reduction activity of the complexes. To explore the application of active coordination compounds in initiating explosive devices, three new composite igniting powders were obtained by mixing three complexes with sodium bromate in the mass ratio of 1∶7, respectively. The composite powders were ignited and tested with electric heating wire. After being ignited by electric heating wire, the three composite agents can burn continuously and produce large flame. Results show that the composite agents have potential applications as new ignition agents.

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引用本文

梁琳娜,雷国荣,李志敏,等.高活性配合物及其复合点火药剂的制备与性能[J].含能材料, 2022, 30(4):294-300. DOI:10.11943/CJEM2021332.
LIANG Lin-na, LEI Guo-rong, LI Zhi-min, et al. Preparation and Performances of Active Coordination Compounds and Their Composite Ignition Powders[J]. Chinese Journal of Energetic Materials, 2022, 30(4):294-300. DOI:10.11943/CJEM2021332.

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历史
  • 收稿日期: 2021-12-13
  • 最后修改日期: 2022-02-25
  • 录用日期: 2022-02-23
  • 在线发布日期: 2022-02-24
  • 出版日期: 2022-04-25