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| Particle Size, Morphology and Sensitivity Characteristics of Energetic Solid Particles in Propellants |
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| DOI：10.7643/issn.1672-9242.2022.10.005 |
| KeyWord:AP RDX AL particle size sensitivity mixed material |
| Author | Institution |
| LIU Jin-xiang |
Xi' an North Huian Chemical Industry Company, Xi'an, , China |
| CHEN Jiang-bo |
Xi' an North Huian Chemical Industry Company, Xi'an, , China |
| WANG Fei |
Xi' an North Huian Chemical Industry Company, Xi'an, , China |
| ZHANG Wei-hai |
Xi' an North Huian Chemical Industry Company, Xi'an, , China |
| LI Fang-fang |
Xi' an North Huian Chemical Industry Company, Xi'an, , China |
| YANG Yan-ting |
Xi' an North Huian Chemical Industry Company, Xi'an, , China |
| ZHANG Jun |
Xi' an North Huian Chemical Industry Company, Xi'an, , China |
| DENG Hai-juan |
Xi' an North Huian Chemical Industry Company, Xi'an, , China |
| LI Yan |
Xi' an North Huian Chemical Industry Company, Xi'an, , China |
| YUAN Li |
Xi' an North Huian Chemical Industry Company, Xi'an, , China |
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| Abstract: |
| The paper intendsto study the correlation between particle size, morphology and sensitivity characteristics of propellant energetic solid particles. By using Laser Particle Size Analyzer (LPSA), Scanning Electron Microscope (SEM), Friction Sensitivity Meter, Impact Sensitivity Meter, Electrostatic Sensitivity Meter and Burst Point Tester, the particle size and sensitivity of the main propellant solid particles AP, RDX and AL were tested and studied to investigate the mechanical, electrostatic, and thermal susceptibility of AP and RDX with different size specifications and test the thermal sensitivities for the mixture of AP, RDX and AL. The results showed that the friction and electrostatic sensitivity of AP increased with the decrease of particle size; the coarse AP (40-60 mesh, 60-80 mesh and 100-140 mesh) is insensitive to the impact sensitivity, but shows a certain sensitivity to crushed fine material (1-18 μm); the relationship between thermal sensitivity and particle size, for the 5 s burst point, the results are all greater than 400 ℃. For common RDX, two kinds of RDX with different particle sizes show high sensitivity to different excitation sources; the sensitivity characteristics of high-quality RDX are obviously better than that of common RDX. After mixing between AP, RDX and AL, the sensitivity characteristics have changed to a certain extent. The fine material AP has higher mechanical and thermal sensitivity; the smaller the particle size of RDX, the lower the friction and impact sensitivity; the electrostatic sensitivity of the three particle sizes of RDX is equivalent; AP, RDX and AL powder still maintain a high friction sensitivity when mixed. |
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