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四氮杂戊搭烯衍生的耐热含能结构的对比热研究

Comparative thermal research on tetraazapentalene-derived heat-resistant energetic structures.

作者信息

Zhou Jing, Ding Li, Zhu Yong, Wang Bozhou, Li Xiangzhi, Zhang Junlin

机构信息

State Key Laboratory of Fluorine and Nitrogen Chemical, Xi'an Modern Chemistry Research Institute, Xi'an, 710065, China.

Department of Chemistry, Technische Universität München, 85748, Garching Bei München, Germany.

出版信息

Sci Rep. 2020 Dec 10;10(1):21757. doi: 10.1038/s41598-020-78980-1.

DOI:10.1038/s41598-020-78980-1
PMID:33303903
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7730128/
Abstract

Organic inner salt structures are ideal backbones for heat-resistant energetic materials and systematic studies towards the thermal properties of energetic organic inner salt structures are crucial to their applications. Herein, we report a comparative thermal research of two energetic organic inner salts with different tetraazapentalene backbones. Detailed thermal decomposition behaviors and kinetics were investigated through differential scanning calorimetry and thermogravimetric analysis (DSC-TG) methods, showing that the thermal stability of the inner salts is higher than most of the traditional heat-resistant energetic materials. Further studies towards the thermal decomposition mechanism were carried out through condensed-phase thermolysis/Fourier-transform infrared (in-situ FTIR) spectroscopy and the combination of differential scanning calorimetry-thermogravimetry-mass spectrometry-Fourier-transform infrared spectroscopy (DSC-TG-MS-FTIR) techniques. The experiment and calculation results prove that the arrangement of the inner salt backbones has great influence on the thermal decompositions of the corresponding energetic materials. The weak N4-N5 bond in "y-" pattern tetraazapentalene backbone lead to early decomposition process and the "z-" pattern tetraazapentalene backbone exhibits more concentrated decomposition behaviors.

摘要

有机内盐结构是耐热含能材料的理想骨架，对含能有机内盐结构的热性能进行系统研究对其应用至关重要。在此，我们报道了两种具有不同四氮杂并戊搭烯骨架的含能有机内盐的对比热研究。通过差示扫描量热法和热重分析法（DSC-TG）研究了详细的热分解行为和动力学，结果表明内盐的热稳定性高于大多数传统耐热含能材料。通过凝聚相热解/傅里叶变换红外（原位FTIR）光谱以及差示扫描量热-热重-质谱-傅里叶变换红外光谱联用（DSC-TG-MS-FTIR）技术对热分解机理进行了进一步研究。实验和计算结果证明，内盐骨架的排列对相应含能材料的热分解有很大影响。“y-”型四氮杂并戊搭烯骨架中较弱的N4-N5键导致早期分解过程，而“z-”型四氮杂并戊搭烯骨架表现出更集中的分解行为。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/7e2b1b76ae75/41598_2020_78980_Fig11_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/201a2a063f5c/41598_2020_78980_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/44771348badf/41598_2020_78980_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/0670c2d6d6c6/41598_2020_78980_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/8202061e4f89/41598_2020_78980_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/d9b5ba97b57a/41598_2020_78980_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/c40902fa2e06/41598_2020_78980_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/7e2b1b76ae75/41598_2020_78980_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/9c5239923947/41598_2020_78980_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/ce8c0ba63082/41598_2020_78980_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/938bd2c33ac4/41598_2020_78980_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/1e2d2b7fa8b9/41598_2020_78980_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/201a2a063f5c/41598_2020_78980_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/44771348badf/41598_2020_78980_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/0670c2d6d6c6/41598_2020_78980_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/8202061e4f89/41598_2020_78980_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/d9b5ba97b57a/41598_2020_78980_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/c40902fa2e06/41598_2020_78980_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8c92/7730128/7e2b1b76ae75/41598_2020_78980_Fig11_HTML.jpg

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