| MgH2对乳化炸药的压力减敏影响实验 |
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| 引用本文： | 程扬帆,马宏昊,沈兆武.MgH2对乳化炸药的压力减敏影响实验[J].爆炸与冲击,2014,34(4):427-432. |
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| 作者姓名： | 程扬帆 马宏昊 沈兆武 |
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| 作者单位： | 中国科学技术大学近代力学系，安徽 合肥230027 |
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| 基金项目： | 国家自然科学基金重点项目(51134012);国家自然科学基金面上项目(51374189,51174183)~~ |
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| 摘 要： | 将储氢材料MgH2作为敏化剂和含能材料引入到乳化炸药的配方中，通过冲击波动压发生装置和水下爆炸实验研究MgH2对乳化炸药抗冲击波性能的影响，并与玻璃微球敏化的乳化炸药进行对比。研究结果表明，MgH2能够显著减弱压力减敏作用对乳化炸药爆轰性能的影响，且同等受压程度下爆炸威力远大于玻璃微球敏化的乳化炸药。最后，通过扫描电镜研究受压乳化炸药微观结构，得出乳化基质破乳和有效“热点”减少是乳化炸药受冲击波作用后爆轰压力降低的主要影响因素。
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| 关 键 词： | 爆炸力学 压力减敏 储氢材料 乳化炸药 敏化剂 |
| 收稿时间： | 2012-11-29 |
Experimental research on pressure desensitization of emulsion explosive sensitized by MgH2 |
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| Institution: | Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, Anhui, China |
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| Abstract: | For the first time, MgH2powders both as sensitizers and energetic materials in the emulsion explosive was studied on the effects of shock－wave resistance with shock－wave generator and experiments of underwater explosion.Compared with emulsion explosive sensitized by glass microspheres, emulsion explosive sensitized by MgH2presents much smaller ratio of pressure desensitization and stronger explosive effect; the microstructure of emulsion explosive was studied with the scanning electron microscope.And the result show that demulsification of emulsion explosive and decrease of effective"hot spot"are key reasons of decrease in detonation pressure of emulsion explosive. |
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