RDX crystals with high sphericity prepared by resonance acoustic mixing assisted solvent etching technology
In order to obtain high-quality spherical RDX crystal particles, the RDX crystals were suspended in a mixed solvent of cyclohexanone and cyclohexane, subsequently a solvent etching study was carried out under the action of vibration/acoustic flow coupled flow field, which generated by resonance acou...
| 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 |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914723000107 |
| _version_ | 1827783615035998208 |
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| author | Dongjie Liao Qian Liu Chunyan Li Ning Liu Mingchang Wang Chongwei An |
| author_facet | Dongjie Liao Qian Liu Chunyan Li Ning Liu Mingchang Wang Chongwei An |
| author_sort | Dongjie Liao |
| collection | DOAJ |
| description | In order to obtain high-quality spherical RDX crystal particles, the RDX crystals were suspended in a mixed solvent of cyclohexanone and cyclohexane, subsequently a solvent etching study was carried out under the action of vibration/acoustic flow coupled flow field, which generated by resonance acoustic mixing. The effects of solvent ratio, temperature, acceleration and experiment time on morphology as well as particle size of RDX crystals were studied. Not only were the morphology, particle size distribution and crystal form of RDX crystals determined, but also the thermal decomposition performance and mechanical sensitivity of spherical RDX were examined and discussed. Results indicated that under the process of solvent/non-solvent volume ratio at 1:2, temperature of 40°C, acceleration of 40 g and experiment time of 4 h, α-type RDX crystal with sphericity of 0.92 can be obtained. Furthermore, the median particle size (D50) of spherical RDX crystals is 215.8 μm with a unimodal particle size distribution (size span 1.34). For one thing, the thermal decomposition peak temperature of spherical RDX is about 2.5°C higher than that of raw RDX, and apparent activation energy reaches 444.68 kJ/mol. For another thing, impact sensitivity and friction sensitivity of spherical RDX are 18.18% and 33.33% lower than that of raw RDX, respectively. It demonstrates that safety of spherical RDX under thermal, impact and friction stimuli has been improved. |
| first_indexed | 2024-03-11T15:49:56Z |
| format | Article |
| id | doaj.art-6b05f30e75bd4070a50bc0f6255ed9fb |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-03-11T15:49:56Z |
| publishDate | 2023-10-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-6b05f30e75bd4070a50bc0f6255ed9fb2023-10-26T04:18:06ZengKeAi Communications Co., Ltd.Defence Technology2214-91472023-10-01282332RDX crystals with high sphericity prepared by resonance acoustic mixing assisted solvent etching technologyDongjie Liao0Qian Liu1Chunyan Li2Ning Liu3Mingchang Wang4Chongwei An5North University of China, Taiyuan 030051, ChinaYichang Testing Technique R&D Institute, Yichang 443099, ChinaNorth University of China, Taiyuan 030051, ChinaXi'an Modern Chemistry Research Institute, Xi'an 710065, ChinaXi'an Modern Chemistry Research Institute, Xi'an 710065, ChinaNorth University of China, Taiyuan 030051, China; Corresponding author.In order to obtain high-quality spherical RDX crystal particles, the RDX crystals were suspended in a mixed solvent of cyclohexanone and cyclohexane, subsequently a solvent etching study was carried out under the action of vibration/acoustic flow coupled flow field, which generated by resonance acoustic mixing. The effects of solvent ratio, temperature, acceleration and experiment time on morphology as well as particle size of RDX crystals were studied. Not only were the morphology, particle size distribution and crystal form of RDX crystals determined, but also the thermal decomposition performance and mechanical sensitivity of spherical RDX were examined and discussed. Results indicated that under the process of solvent/non-solvent volume ratio at 1:2, temperature of 40°C, acceleration of 40 g and experiment time of 4 h, α-type RDX crystal with sphericity of 0.92 can be obtained. Furthermore, the median particle size (D50) of spherical RDX crystals is 215.8 μm with a unimodal particle size distribution (size span 1.34). For one thing, the thermal decomposition peak temperature of spherical RDX is about 2.5°C higher than that of raw RDX, and apparent activation energy reaches 444.68 kJ/mol. For another thing, impact sensitivity and friction sensitivity of spherical RDX are 18.18% and 33.33% lower than that of raw RDX, respectively. It demonstrates that safety of spherical RDX under thermal, impact and friction stimuli has been improved.http://www.sciencedirect.com/science/article/pii/S2214914723000107Resonance acoustic mixingSolvent etchingRDXSphericial explosive |
| spellingShingle | Dongjie Liao Qian Liu Chunyan Li Ning Liu Mingchang Wang Chongwei An RDX crystals with high sphericity prepared by resonance acoustic mixing assisted solvent etching technology Defence Technology Resonance acoustic mixing Solvent etching RDX Sphericial explosive |
| title | RDX crystals with high sphericity prepared by resonance acoustic mixing assisted solvent etching technology |
| title_full | RDX crystals with high sphericity prepared by resonance acoustic mixing assisted solvent etching technology |
| title_fullStr | RDX crystals with high sphericity prepared by resonance acoustic mixing assisted solvent etching technology |
| title_full_unstemmed | RDX crystals with high sphericity prepared by resonance acoustic mixing assisted solvent etching technology |
| title_short | RDX crystals with high sphericity prepared by resonance acoustic mixing assisted solvent etching technology |
| title_sort | rdx crystals with high sphericity prepared by resonance acoustic mixing assisted solvent etching technology |
| topic | Resonance acoustic mixing Solvent etching RDX Sphericial explosive |
| url | http://www.sciencedirect.com/science/article/pii/S2214914723000107 |
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