Formation and characterization of core-shell CL-20/TNT composite prepared by spray-drying technique
The core-shell 2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane/2,4,6-Trinitrotoluene (CL-20/TNT) composite was prepared by spray-drying method in which sensitive high energy explosive (CL-20) was coated with insensitive explosive (TNT). The structure and properties of different formulatio...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2021-12-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914720305031 |
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| author | Chang-gui Song Xiao-dong Li Yue Yang Hui-min Liu Ying-xin Tan Jing-yu Wang |
| author_facet | Chang-gui Song Xiao-dong Li Yue Yang Hui-min Liu Ying-xin Tan Jing-yu Wang |
| author_sort | Chang-gui Song |
| collection | DOAJ |
| description | The core-shell 2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane/2,4,6-Trinitrotoluene (CL-20/TNT) composite was prepared by spray-drying method in which sensitive high energy explosive (CL-20) was coated with insensitive explosive (TNT). The structure and properties of different formulations of CL-20/TNT composite and CL-20/TNT mixture were characterized by scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Laser particle size analyzer, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), differential scanning calorimetry (DSC), impact sensitivity test and detonation performance. The results of SEM, TEM, XPS and XRD show that ϵ-CL-20 particles are coated by TNT. When the ratio of CL-20/TNT is 75/25, core-shell structure is well formed, and thickness of the shell is about 20–30 nm. And the analysis of heat and impact show that with the increase of TNT content, the TNT coating on the core-shell composite material can not only catalyze the thermal decomposition of core material (CL-20), but also greatly reduce the impact sensitivity. Compared with the CL-20/TNT mixture (75/25) at the same ratio, the characteristic drop height of core-shell CL-20/TNT composite (75/25) increased by 47.6% and the TNT coating can accelerate the nuclear decomposition in the CL-20/TNT composites. Therefore, the preparation of the core-shell composites can be regarded as a unique means, by which the composites are characterized by controllable decomposition rate, high energy and excellent mechanical sensitivity and could be applied to propellants and other fields. |
| first_indexed | 2024-12-14T23:22:07Z |
| format | Article |
| id | doaj.art-41ae1829ffa440518e76269627061918 |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-12-14T23:22:07Z |
| publishDate | 2021-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-41ae1829ffa440518e762696270619182022-12-21T22:43:54ZengKeAi Communications Co., Ltd.Defence Technology2214-91472021-12-0117619361943Formation and characterization of core-shell CL-20/TNT composite prepared by spray-drying techniqueChang-gui Song0Xiao-dong Li1Yue Yang2Hui-min Liu3Ying-xin Tan4Jing-yu Wang5School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, ChinaCorresponding author.; School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan, 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan, 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan, 030051, ChinaSchool of Environment and Safety Engineering, North University of China, Taiyuan, 030051, ChinaThe core-shell 2,4,6,8,10,12-Hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane/2,4,6-Trinitrotoluene (CL-20/TNT) composite was prepared by spray-drying method in which sensitive high energy explosive (CL-20) was coated with insensitive explosive (TNT). The structure and properties of different formulations of CL-20/TNT composite and CL-20/TNT mixture were characterized by scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Laser particle size analyzer, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), differential scanning calorimetry (DSC), impact sensitivity test and detonation performance. The results of SEM, TEM, XPS and XRD show that ϵ-CL-20 particles are coated by TNT. When the ratio of CL-20/TNT is 75/25, core-shell structure is well formed, and thickness of the shell is about 20–30 nm. And the analysis of heat and impact show that with the increase of TNT content, the TNT coating on the core-shell composite material can not only catalyze the thermal decomposition of core material (CL-20), but also greatly reduce the impact sensitivity. Compared with the CL-20/TNT mixture (75/25) at the same ratio, the characteristic drop height of core-shell CL-20/TNT composite (75/25) increased by 47.6% and the TNT coating can accelerate the nuclear decomposition in the CL-20/TNT composites. Therefore, the preparation of the core-shell composites can be regarded as a unique means, by which the composites are characterized by controllable decomposition rate, high energy and excellent mechanical sensitivity and could be applied to propellants and other fields.http://www.sciencedirect.com/science/article/pii/S2214914720305031Energetic materialsCL-20(2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane)TNT(2,4,6-Trinitrotoluene)Spray-drying methodCore-shell structure |
| spellingShingle | Chang-gui Song Xiao-dong Li Yue Yang Hui-min Liu Ying-xin Tan Jing-yu Wang Formation and characterization of core-shell CL-20/TNT composite prepared by spray-drying technique Defence Technology Energetic materials CL-20(2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane) TNT(2,4,6-Trinitrotoluene) Spray-drying method Core-shell structure |
| title | Formation and characterization of core-shell CL-20/TNT composite prepared by spray-drying technique |
| title_full | Formation and characterization of core-shell CL-20/TNT composite prepared by spray-drying technique |
| title_fullStr | Formation and characterization of core-shell CL-20/TNT composite prepared by spray-drying technique |
| title_full_unstemmed | Formation and characterization of core-shell CL-20/TNT composite prepared by spray-drying technique |
| title_short | Formation and characterization of core-shell CL-20/TNT composite prepared by spray-drying technique |
| title_sort | formation and characterization of core shell cl 20 tnt composite prepared by spray drying technique |
| topic | Energetic materials CL-20(2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane) TNT(2,4,6-Trinitrotoluene) Spray-drying method Core-shell structure |
| url | http://www.sciencedirect.com/science/article/pii/S2214914720305031 |
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