玻璃微球含量对乳化炸药爆速的影响及蜂窝炸药研究

Percentage of Glass Microsphere on Emulsion Explosive Property and Honeycomb Explosive

针对传统爆炸复合炸药的缺点,采用玻璃微球作为稀释剂,通过改变玻璃微球含量,研究其对乳化炸药密度与爆速的影响,通过乳化炸药制备蜂窝结构炸药,用于金属板的爆炸焊接。T2铜板和Q235钢板分别作为覆层和基层,其相应尺寸分别为2 mm×150 mm×300 mm和20 mm×150 mm×300 mm,选用两种爆速(2596 m/s和3089.5 m/s)的蜂窝结构炸药作为爆炸复合炸药,进行铜-钢爆炸焊接,然后利用微观形貌分析观察复合板结合性能。实验结果表明:玻璃微球含量大于5%小于35%时,炸药密度和爆速均随着玻璃微球含量的增加而降低;玻璃微球含量为40%时,发生拒爆现象。炸药爆速随着炸药密度的降低而下降。铝蜂窝板可以降低乳化炸药临界直径,爆速也有所提高。爆速低的蜂窝结构炸药进行爆炸焊接,T2/Q235复合板界面呈小波状,结合性能良好。

In view of the shortcomings of traditional explosive used to carry out explosive welding,glass microsphere was used as diluent. Effect of glass microsphere on detonation velocity and density of emulsion explosive was studied by changing percentage of glass microsphere,which was convenient for preparation of honeycomb explosive and carried out explosive welding of metallic plates. The cover and base plates used in this study were respectively made of T2 copper and Q235 steel,whose corresponding dimensions were 2 mm × 150 mm × 300 mm and 20 mm ×150 mm × 300 mm. Honeycomb explosives with the detonation velocity of 2596 m/s and 3089. 5 m/s were used to carry out explosive welding of copper to steel. Bonding quality of the clad plates was observed by micromorphology analysis. The results showed that when the percentage of glass microsphere was greater than 5% and less than 35%,detonation velocity and density of emulsion explosive decreased with the increase of percentage of glass microsphere.Emulsion explosive misfired when the percentage of glass microsphere was 40%. Detonation velocity of emulsion explosive decreased with the decrease of density of explosive. Aluminum honeycomb panel could decrease critical diameter of emulsion explosive and increase detonation velocity. The interface of T2/Q235 clad plate was presented wave form by honeycomb explosive with lower detonation velocity,and the clad plate possesses good bonding property.