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...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2021-11-01
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| Series: | Nano Select |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/nano.202100046 |
| _version_ | 1818752129529020416 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-18T04:46:33Z |
| format | Article |
| id | doaj.art-1dde2526964644e9b0b734fe5d8295c6 |
| institution | Directory Open Access Journal |
| issn | 2688-4011 |
| language | English |
| last_indexed | 2024-12-18T04:46:33Z |
| publishDate | 2021-11-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Nano Select |
| spelling | doaj.art-1dde2526964644e9b0b734fe5d8295c62022-12-21T21:20:34ZengWiley-VCHNano Select2688-40112021-11-012112225223610.1002/nano.202100046Fabrication of nitrocellulose‐based nanoenergetic composites, study on its structure, thermal decomposition kinetics, mechanism, and sensitivityLing Chen0Shishuo Liu1Xinfu Cao2Jianbing Gao3Yingbo Wang4Yang Qin5Yang Zhang6Jianwei Zhang7Guorui Jin8Moru Wang9Jie Liu10Weidong He11Key Laboratory of Special Energy Materials Ministry of Education, Nanjing University of Science and Technology Jiangsu Nanjing 210094 ChinaNational Special Superfine Powder Engineering Research Center of China Nanjing University of Science and Technology Jiangsu Nanjing 210094 ChinaInner Mongolia Synthetic Chemical and Engineering Institute Huhhot 010010 ChinaInner Mongolia Synthetic Chemical and Engineering Institute Huhhot 010010 ChinaKey Laboratory of Special Energy Materials Ministry of Education, Nanjing University of Science and Technology Jiangsu Nanjing 210094 ChinaNational Special Superfine Powder Engineering Research Center of China Nanjing University of Science and Technology Jiangsu Nanjing 210094 ChinaNational Special Superfine Powder Engineering Research Center of China Nanjing University of Science and Technology Jiangsu Nanjing 210094 ChinaKey Laboratory of Special Energy Materials Ministry of Education, Nanjing University of Science and Technology Jiangsu Nanjing 210094 ChinaKey Laboratory of Special Energy Materials Ministry of Education, Nanjing University of Science and Technology Jiangsu Nanjing 210094 ChinaKey Laboratory of Special Energy Materials Ministry of Education, Nanjing University of Science and Technology Jiangsu Nanjing 210094 ChinaNational Special Superfine Powder Engineering Research Center of China Nanjing University of Science and Technology Jiangsu Nanjing 210094 ChinaKey Laboratory of Special Energy Materials Ministry of Education, Nanjing University of Science and Technology Jiangsu Nanjing 210094 ChinaAbstract 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.https://doi.org/10.1002/nano.202100046mechanismnanocomposite energetic materialsnitramine explosivesnitrocellulosethermal decomposition |
| spellingShingle | 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 Nano Select mechanism nanocomposite energetic materials nitramine explosives nitrocellulose thermal decomposition |
| title | 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_short | 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 |
| topic | mechanism nanocomposite energetic materials nitramine explosives nitrocellulose thermal decomposition |
| url | https://doi.org/10.1002/nano.202100046 |
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