CHINESE JOURNAL OF ENERGETIC MATERIALS
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一种双配体耐热含能金属有机骨架材料的合成及性能
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北京理工大学材料学院,北京 100081

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国家自然科学基金资助(U1530262, 21875021, 21576026,21805009)


Synthesis and Properties of a Heat-resistant Biligand Energetic Metal-organic Framework Material
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School of Materials Science & Engineering, Beijing Institute of Technology,Beijing 100081, China

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    摘要:

    为了研究具有双配体的含能金属有机骨架(E-MOFs)的性能,以3-氨基-1,2,4-三唑、3,5-二氨基-1,2,4-三唑以及甲酸锌为原料,采用水热法制备了含有双配体的E-MOFs晶体MOF(Zn)-1;仅以3-氨基-1,2,4-三唑为配体的MOF(Zn)-2以及以3,5-二氨基-1,2,4-三唑为配体的MOF(Zn)-3并对其生长机理进行了研究。X-射线单晶衍射表明,MOF(Zn)-2和MOF(Zn)-3均属于正交晶系而MOF(Zn)-1晶体属于三斜晶系。差示扫描量热法(DSC)联合热重分析(TG)研究了MOF(Zn)-1、MOF(Zn)-2和MOF(Zn)-3的热行为,发现其均只有一个剧烈的放热过程。在5 ℃·min-1的升温速率下,MOF(Zn)-1、MOF(Zn)-2和MOF(Zn)-3的分解温度分别为317.5,301.5 ℃和308.2 ℃。 感度测试表明,上述三种材料均属于钝感含能材料(撞击感度大于40 J,摩擦感度大于360 N,静电感度大于24.75 J),具有相对较高的密度(MOF(Zn)-1:2.069 g·cm-3;MOF(Zn)-2:2.177 g·cm-3;MOF(Zn)-3:2.222 g·cm-3),爆轰性能较好(MOF(Zn)-1爆速5.9 km·s-1,爆压17.88 GPa;MOF(Zn)-2:爆速6.0 km·s-1,爆压19.38 GPa;MOF(Zn)-3:爆速6.5 km·s-1,爆压22.17 GPa)。

    Abstract:

    In order to study the performance of energetic metal-organic framework (E-MOFs) with dual ligands, MOF(Zn)-1, an E-MOFs containing dual ligands were prepared by hydrothermalmethodusing 3-amino-1,2,4-triazole, 3,5-diamino-1,2,4-triazole and zinc formate as raw materials. The growth mechanism of MOF(Zn)-2 with 3-amino-1,2,4-triazole as ligand and MOF(Zn)-3 with 3,5-diamino-1,2,4-triazole as ligand were studied. The crystal structures of MOF(Zn)-1, MOF(Zn)-2 and MOF(Zn)-3 were analyzed by X-ray single crystal diffractometer. Results show that MOF(Zn)-2 and MOF(Zn)-3 both belong to orthorhombic system while MOF(Zn)-1 belongs to triclinic system. The study of differential scanning calorimetry (DSC) combined with thermogravimetric analysis (TG) shows that there is only one intense exothermic process for all three materials. The decomposition temperatures of MOF(Zn)-1, MOF(Zn)-2 and MOF(Zn)-3 are 317.5, 301.5 ℃ and 308.2 ℃ at a heating rate of 5 ℃·min-1, respectively. The sensitivity test shows that the above three materials are insensitive energetic materials (IS > 40 J, FS > 360 N, and ESI > 24.75 J). Because of the relatively high density (MOF(Zn)-1: 2.069 g·cm-3; MOF(Zn)-2: 2.177 g·cm-3; MOF(Zn)-3: 2.222 g·cm-3), the predicted detonation performances are relatively good (MOF(Zn)-1: D = 5.9 km·s-1,p = 17.88 GPa; MOF(Zn)-2: D = 6.0 km·s-1, p =19.38 GPa; MOF(Zn)-3: D = 6.5 km·s-1, p = 22.17 GPa).

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史庆嵘,苏辉,李亚琼,等.一种双配体耐热含能金属有机骨架材料的合成及性能[J].含能材料, 2020, 28(7):609-617. DOI:10.11943/CJEM2019310.
SHI Qing-rong, SU Hui, LI Ya-qiong, et al. Synthesis and Properties of a Heat-resistant Biligand Energetic Metal-organic Framework Material[J]. Chinese Journal of Energetic Materials, 2020, 28(7):609-617. DOI:10.11943/CJEM2019310.

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  • 收稿日期: 2019-12-05
  • 最后修改日期: 2020-03-30
  • 录用日期: 2020-02-28
  • 在线发布日期: 2020-03-25
  • 出版日期: 2020-07-25