Effects of content and particle size of cenospheres on the detonation characteristics of emulsion explosive
Effects of content and particle size of cenospheres on the detonation characteristics of emulsion explosive
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微珠含量和粒径对乳化炸药爆炸特性的影响
DOI：
10.1080/07370652.2020.1770896
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发表时间：
2020-05-31
影响因子：
2.1
通讯作者：
Shen, Zhao-Wu
中科院分区：
文献类型：
--
作者：
Fang, Hua;Cheng, Yang-Fan;Shen, Zhao-Wu
空心微珠是工业废渣中的主要成分，充分利用微珠具有良好的经济和环境价值。本文通过在乳化基质中加入空心微珠作为敏化剂，制备了空心微珠敏化乳化炸药。研究了微珠含量和粒度对乳化炸药爆轰性能的影响，并与玻璃微球敏化乳化炸药的爆轰性能进行了比较，确定了最佳配方。微珠的最佳质量分数和粒度分别为12%和83微米，雷度和爆速分别为18.34 mm和4970m/S，接近传统GMS敏化乳化炸药的最大值。空气爆破实验表明，微珠粒度对乳化炸药工作性能的影响与其爆炸威力是一致的。货架期试验和光学显微镜结果表明，空心微珠敏化乳化炸药具有良好的储存稳定性。因此，空心微珠有望成为乳化炸药的物理敏化剂。
ABSTARCT Cenospheres are the main component of industrial waste of fly ash and taking full advantage of them has good economic and environmental values. In this paper, cenospheres sensitized emulsion explosive was prepared by adding cenospheres into the emulsion matrix as the sensitizers. The effects of content and particle size of cenospheres on detonation performance of emulsion explosives were studied, and the optimum formula was determined by comparing its detonation performance with glass microspheres (GMs) sensitized emulsion explosive. The optimum content and particle size of cenospheres were 12 mass% and 83 mu m, and the brisance and detonation velocity were 18.34 mm and 4970 m/s, respectively, which were close to the maximum values of the traditional GMs sensitized emulsion explosive. Air blast experiments indicated that the influence of particle size of cenospheres on the work capability of emulsion explosive was consistent with its explosion power. Shelf-life test and optical microscope results showed that cenospheres sensitized emulsion explosives had good storage stability. Therefore, cenospheres could be a promising physical sensitizer for emulsion explosives.