Fabrication of alginate-based microspheres with cellular structure for tuning ammonium dinitramide performance
Recently, an emerging category green of energetic material ammonium dinitramide (ADN) has exhibited promising application in propellants due to its outstanding merits in energy release and environmental friendliness. It can be considered to substitute traditional oxidizer of ammonium perchlorate (AP...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-10-01
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| Series: | Defence Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914722002604 |
| _version_ | 1797649659171176448 |
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| author | Dun-ju Wang Xu Zhou Yao-feng Mao Xin Wang Ye-ming Huang Rui-hao Wang Da-wei Zheng |
| author_facet | Dun-ju Wang Xu Zhou Yao-feng Mao Xin Wang Ye-ming Huang Rui-hao Wang Da-wei Zheng |
| author_sort | Dun-ju Wang |
| collection | DOAJ |
| description | Recently, an emerging category green of energetic material ammonium dinitramide (ADN) has exhibited promising application in propellants due to its outstanding merits in energy release and environmental friendliness. It can be considered to substitute traditional oxidizer of ammonium perchlorate (AP) in military systems and aerospace. In this paper, a novel spherical energetic composite ADN/copper alginate (CA) with a microporous structure was designed and prepared by the W/O gel emulsion method, and a desirable porous microsphere structure was obtained. Multiple characterization techniques were used to investigate the structure and properties of ADN/CA composites. The results showed that ADN crystals were homogeneously encapsulated in an alginate-gel matrix. Thermal decomposition temperature was reduced to 151.7 °C compared to ADN, while the activation energy of them was reduced from 129.73 kJ/mol (ADN) to 107.50 kJ/mol (ADN/CA-4). In addition, as-prepared samples had lower impact and frictional sensitivity than ADN. The mechanism of sensitivity reduction and decomposition are also discussed. Constant-volume combustion tests show that peak pressure of the ADN/CA-4 achieves 253.4 kPa and pressurization rate of 2750.4 kPa/s. Hence, this has a promising application in improving the combustion performance and safety performance of solid propellants. |
| first_indexed | 2024-03-11T15:49:58Z |
| format | Article |
| id | doaj.art-7638cbad8caa4ff9ab65e5ab644bc076 |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-03-11T15:49:58Z |
| publishDate | 2023-10-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-7638cbad8caa4ff9ab65e5ab644bc0762023-10-26T04:18:03ZengKeAi Communications Co., Ltd.Defence Technology2214-91472023-10-0128111120Fabrication of alginate-based microspheres with cellular structure for tuning ammonium dinitramide performanceDun-ju Wang0Xu Zhou1Yao-feng Mao2Xin Wang3Ye-ming Huang4Rui-hao Wang5Da-wei Zheng6Co-Innovation Center for New Energetic Materials, Southwest University of Science and Technology, Mianyang, 621010, China; Corresponding author.Co-Innovation Center for New Energetic Materials, Southwest University of Science and Technology, Mianyang, 621010, China; China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang, 621900, PR ChinaChina Academy of Engineering Physics, Institute of Chemical Materials, Mianyang, 621900, PR ChinaCo-Innovation Center for New Energetic Materials, Southwest University of Science and Technology, Mianyang, 621010, ChinaCo-Innovation Center for New Energetic Materials, Southwest University of Science and Technology, Mianyang, 621010, ChinaCo-Innovation Center for New Energetic Materials, Southwest University of Science and Technology, Mianyang, 621010, ChinaCo-Innovation Center for New Energetic Materials, Southwest University of Science and Technology, Mianyang, 621010, ChinaRecently, an emerging category green of energetic material ammonium dinitramide (ADN) has exhibited promising application in propellants due to its outstanding merits in energy release and environmental friendliness. It can be considered to substitute traditional oxidizer of ammonium perchlorate (AP) in military systems and aerospace. In this paper, a novel spherical energetic composite ADN/copper alginate (CA) with a microporous structure was designed and prepared by the W/O gel emulsion method, and a desirable porous microsphere structure was obtained. Multiple characterization techniques were used to investigate the structure and properties of ADN/CA composites. The results showed that ADN crystals were homogeneously encapsulated in an alginate-gel matrix. Thermal decomposition temperature was reduced to 151.7 °C compared to ADN, while the activation energy of them was reduced from 129.73 kJ/mol (ADN) to 107.50 kJ/mol (ADN/CA-4). In addition, as-prepared samples had lower impact and frictional sensitivity than ADN. The mechanism of sensitivity reduction and decomposition are also discussed. Constant-volume combustion tests show that peak pressure of the ADN/CA-4 achieves 253.4 kPa and pressurization rate of 2750.4 kPa/s. Hence, this has a promising application in improving the combustion performance and safety performance of solid propellants.http://www.sciencedirect.com/science/article/pii/S2214914722002604Ammonium dinitramideSodium alginateMicrospheresHigh reactivityEnergetic materials |
| spellingShingle | Dun-ju Wang Xu Zhou Yao-feng Mao Xin Wang Ye-ming Huang Rui-hao Wang Da-wei Zheng Fabrication of alginate-based microspheres with cellular structure for tuning ammonium dinitramide performance Defence Technology Ammonium dinitramide Sodium alginate Microspheres High reactivity Energetic materials |
| title | Fabrication of alginate-based microspheres with cellular structure for tuning ammonium dinitramide performance |
| title_full | Fabrication of alginate-based microspheres with cellular structure for tuning ammonium dinitramide performance |
| title_fullStr | Fabrication of alginate-based microspheres with cellular structure for tuning ammonium dinitramide performance |
| title_full_unstemmed | Fabrication of alginate-based microspheres with cellular structure for tuning ammonium dinitramide performance |
| title_short | Fabrication of alginate-based microspheres with cellular structure for tuning ammonium dinitramide performance |
| title_sort | fabrication of alginate based microspheres with cellular structure for tuning ammonium dinitramide performance |
| topic | Ammonium dinitramide Sodium alginate Microspheres High reactivity Energetic materials |
| url | http://www.sciencedirect.com/science/article/pii/S2214914722002604 |
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