Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity

Abstract In order to investigate the thermal decomposition kinetics and mechanism of nitrocellulose (NC) based nitramine explosives nanocomposite energetic materials, this work prepares NC/RDX (cyclotrimethylenetrinitramine), NC/HMX (cyclotetramethylenetetranitramine), and NC/CL‐20 (hexanitrohexaaza...

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Autores principales:	Ling Chen, Shishuo Liu, Xinfu Cao, Jianbing Gao, Yingbo Wang, Yang Qin, Yang Zhang, Jianwei Zhang, Guorui Jin, Moru Wang, Jie Liu, Weidong He
Formato:	article
Lenguaje:	EN
Publicado:	Wiley-VCH 2021
Materias:	mechanism nanocomposite energetic materials nitramine explosives nitrocellulose thermal decomposition Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/1dde2526964644e9b0b734fe5d8295c6
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spelling	oai:doaj.org-article:1dde2526964644e9b0b734fe5d8295c62021-11-10T13:30:47ZFabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity2688-401110.1002/nano.202100046https://doaj.org/article/1dde2526964644e9b0b734fe5d8295c62021-11-01T00:00:00Zhttps://doi.org/10.1002/nano.202100046https://doaj.org/toc/2688-4011Abstract In order to investigate the thermal decomposition kinetics and mechanism of nitrocellulose (NC) based nitramine explosives nanocomposite energetic materials, this work prepares NC/RDX (cyclotrimethylenetrinitramine), NC/HMX (cyclotetramethylenetetranitramine), and NC/CL‐20 (hexanitrohexaazaisowurtzitane) composites by a combined sol‐gel and the freeze‐drying technology. The structure is systematically investigated and the results reveal that the explosive particles are dispersed, filled, or embedded homogenously in the gel matrix of NC, thereby restricting the crystal growth of RDX, HMX, CL‐20 particles to coarse and achieving submicron/nanometer. The thermal analysis of composites exhibits much lower peak temperature compared with raw explosive crystal, furthermore, the activation energy (Ea) of composites is also lower than that of both NC and explosives. Hence, the unique structure of NC gel matrix embedded explosives inside demonstrated different mechanism of decomposition. Concretely, the rupture of the H‐NCO = O bond in the cross‐linked structure is detected firstly, subsequently, the macromolecular chains’ scission site of gel firstly occurs at ‐C‐O‐C‐ in the ring, and then the scission of ‐NO2 (from NC or explosive crystals) bonds happened. Hence, this study may provide promising fabrication strategy and basic theory for the application of NC‐based nanocomposite energetics in high‐energy propellants and explosives.Ling ChenShishuo LiuXinfu CaoJianbing GaoYingbo WangYang QinYang ZhangJianwei ZhangGuorui JinMoru WangJie LiuWeidong HeWiley-VCHarticlemechanismnanocomposite energetic materialsnitramine explosivesnitrocellulosethermal decompositionMaterials of engineering and construction. Mechanics of materialsTA401-492ENNano Select, Vol 2, Iss 11, Pp 2225-2236 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	mechanism nanocomposite energetic materials nitramine explosives nitrocellulose thermal decomposition Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	mechanism nanocomposite energetic materials nitramine explosives nitrocellulose thermal decomposition Materials of engineering and construction. Mechanics of materials TA401-492 Ling Chen Shishuo Liu Xinfu Cao Jianbing Gao Yingbo Wang Yang Qin Yang Zhang Jianwei Zhang Guorui Jin Moru Wang Jie Liu Weidong He Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity
description	Abstract In order to investigate the thermal decomposition kinetics and mechanism of nitrocellulose (NC) based nitramine explosives nanocomposite energetic materials, this work prepares NC/RDX (cyclotrimethylenetrinitramine), NC/HMX (cyclotetramethylenetetranitramine), and NC/CL‐20 (hexanitrohexaazaisowurtzitane) composites by a combined sol‐gel and the freeze‐drying technology. The structure is systematically investigated and the results reveal that the explosive particles are dispersed, filled, or embedded homogenously in the gel matrix of NC, thereby restricting the crystal growth of RDX, HMX, CL‐20 particles to coarse and achieving submicron/nanometer. The thermal analysis of composites exhibits much lower peak temperature compared with raw explosive crystal, furthermore, the activation energy (Ea) of composites is also lower than that of both NC and explosives. Hence, the unique structure of NC gel matrix embedded explosives inside demonstrated different mechanism of decomposition. Concretely, the rupture of the H‐NCO = O bond in the cross‐linked structure is detected firstly, subsequently, the macromolecular chains’ scission site of gel firstly occurs at ‐C‐O‐C‐ in the ring, and then the scission of ‐NO2 (from NC or explosive crystals) bonds happened. Hence, this study may provide promising fabrication strategy and basic theory for the application of NC‐based nanocomposite energetics in high‐energy propellants and explosives.
format	article
author	Ling Chen Shishuo Liu Xinfu Cao Jianbing Gao Yingbo Wang Yang Qin Yang Zhang Jianwei Zhang Guorui Jin Moru Wang Jie Liu Weidong He
author_facet	Ling Chen Shishuo Liu Xinfu Cao Jianbing Gao Yingbo Wang Yang Qin Yang Zhang Jianwei Zhang Guorui Jin Moru Wang Jie Liu Weidong He
author_sort	Ling Chen
title	Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity
title_short	Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity
title_full	Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity
title_fullStr	Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity
title_full_unstemmed	Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity
title_sort	fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity
publisher	Wiley-VCH
publishDate	2021
url	https://doaj.org/article/1dde2526964644e9b0b734fe5d8295c6
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_version_	1718439960227348480

Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivity

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