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Rapid Assembly and Preparation of Energetic Microspheres LLM‐105/CL‐20
Author(s) -
Zhang Yuanping,
Hou Conghua,
Li Congcong,
Zhang Xin,
Tan Yingxin,
Wang Jingyu
Publication year - 2020
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201900389
Subject(s) - differential scanning calorimetry , scanning electron microscope , composite number , materials science , powder diffraction , fourier transform infrared spectroscopy , thermal decomposition , microsphere , chemical engineering , nuclear chemistry , analytical chemistry (journal) , composite material , crystallography , chemistry , organic chemistry , physics , engineering , thermodynamics
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.