Preparation method for anti-freezing water-gel explosive

Abstract

The invention relates to a preparation method for an anti-freezing water-gel explosive, belonging to the technical field of industrial explosives. The anti-freezing water-gel explosive prepared in theinvention has good anti-freezing effect, and the detonation and good detonation sensitivity of the explosive at low temperature are ensured; ethylene glycol used as an anti-freezing agent has excellent anti-freezing effect, and when added into the water-gel explosive, ethylene glycol can improve the network structure of sesbania gum; when a temperature drops, the anti-freezing agent and a surfactant are fused to form a co-solvent, so a crystallization temperature and a freezing temperature can be lowered so as to reduce the phenomenon of phase transition; lauryl sodium sulfate can also act asa crystal form control agent to inhibit the precipitation of ammonium nitrate into large-grain crystals and to allow all the ammonium nitrate to be precipitated in a microcrystal form, so great dropin the free energy of the water-gel explosive at a low temperature is avoided and the low-temperature detonation sensitivity of the water-gel explosive is improved; and the synergistic action of various components can effectively prevent freezing, reduce the usage amount of ethylene glycol and lower production cost.

Description

technical field [0001] The invention relates to a preparation method of an antifreeze water gel explosive, which belongs to the technical field of industrial explosives. Background technique [0002] Coal is the main energy source, and the drilling and blasting process is mostly used in coal mine production. Therefore, the largest user of industrial explosives is the coal industry. Because of the many advantages of water gel explosives, there are more and more researches on water gel explosives in China. Water-gel explosive is a kind of water-containing explosive, which is the second generation of water-containing explosive. It was developed in the mid-1970s, successfully developed and put into production in the late 1970s. The sensitizer used in the slurry explosive is high-grade explosive or aluminum powder, while the sensitizer used in the water-gel explosive is methylamine nitrate, and the other components are basically the same, and chemical cross-linking technology i...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention: Aiming at the problem that the water in the existing water-gel explosive will freeze at low temperature, resulting in