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Rapid Assembly and Preparation of Energetic Microspheres LLM‐105/CL‐20
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2020-05-26 , DOI: 10.1002/prep.201900389
Yuanping Zhang 1 , Conghua Hou 1 , Congcong Li 1 , Xin Zhang 1 , Yingxin Tan 1 , Jingyu Wang 1
Affiliation  

A novel composite microsphere of 2,4,6,8,10,12‐hexanitrohexaazaisowurtzitane (CL‐20) and 2,6‐diamino‐3,5‐dinitropyrazine‐1‐oxide (LLM‐105) were fabricated by spray drying technology. The morphology, structure and thermal behavior of the obtained particles were characterized via scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FT‐IR), powder x‐ray diffraction (PXRD) and differential scanning calorimetry (DSC). SEM results demonstrated that LLM‐105/CL‐20 microspheres in range of 1–3 μm are relatively uniform. PXRD and FT‐IR indicated that the peak patterns of the composite LLM‐105/CL‐20 has shifted slightly from the raw material. Thermal analysis implied that energetic microspheres LLM‐105/CL‐20 has lower decomposition. In addition, a possible formation mechanism for energetic microsphere was proposed. Moreover, the impact sensitivity of composite microspheres could be reduced 5 times compared to the raw CL‐20. This work may introduce a novel idea towards fabricating the composite microspheres.

中文翻译:

快速组装和制备高能微球LLM-105 / CL-20

通过喷雾干燥技术制备了2,4,6,8,10,12-六硝基六氮杂异纤锌矿型结构烷烃(CL-20)和2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)的新型复合微球。通过扫描电子显微镜(SEM),傅立叶变换红外光谱(FT-IR),粉末X射线衍射(PXRD)和差示扫描量热法(DSC)对获得的颗粒的形态,结构和热行为进行了表征。SEM结果表明,LLM-105 / CL-20微球的范围为1-3μm,相对较均匀。PXRD和FT-IR表明,复合材料LLM-105 / CL-20的峰型与原材料略有不同。热分析表明,高能微球LLM-105 / CL-20具有较低的分解度。此外,提出了一种可能的高能微球形成机理。此外,与原始的CL-20相比,复合微球的撞击灵敏度可降低5倍。这项工作可能会提出一个新颖的想法,以制造复合微球。
更新日期:2020-05-26
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