Colloidal emulsion explosive capable of resisting a high-temperature environment, and preparation method thereof

Abstract

The invention discloses a colloidal emulsion explosive capable of resisting a high-temperature environment, wherein the colloidal emulsion explosive is formed by mixing a component A and a component Baccording to an equal ratio, the component A comprises, by mass, 40-45 parts of ammonium nitrate, 5-7 parts of zinc nitrate, 6-8 parts of sodium nitrate, 10-14 parts of paraffin, 7-9 parts of microcrystalline wax, 3-5 parts of polyethylene, 3-5 parts of polyisobutene, 4-6 parts of polyvinyl alcohol, 4-7 parts of a foaming agent, 0.1-0.5 part of a stabilizer, 0.5-1 part of an anionic surfactant, 10-15 parts of water, 5-7 parts of an emulsifier and 4-7 parts of a sensitizer, and the component B comprises, by mass, 80-85 parts of ammonium nitrate, 3-5 parts of ammonium hydrogen nitrate, 2-4 parts of sodium carbonate, 3-5 parts of wood powder, 10-15 parts of a compound oil agent, 2-4 parts of a thickening agent, 0.5-0.7 part of a foaming agent, 0.1-0.3 part of a foaming accelerator and 8-10 parts of water. The invention further provides a preparation method of the colloidal emulsion explosive, wherein the preparation method is simple and easy to implement, and the prepared emulsion explosive is good in stability and low in cost.

Description

technical field [0001] The invention relates to an explosive, in particular to a colloidal emulsified explosive resistant to high temperature environment and a preparation method thereof. Background technique [0002] Emulsion explosive is to use the effect of emulsifier to disperse the droplets of oxidant salt solution evenly in the oil-phase continuous medium containing porous substances such as dispersed air bubbles or hollow glass microspheres to form a water-in-oil emulsion-like explosive. , is a new type of industrial explosive developed in the 1970s. In 1969, Blabm in the United States first elaborated the emulsion explosive technology in a relatively comprehensive way. The earliest emulsion explosive was non-detonator sensitive and must be detonated with the help of a relay primer. Later, with the in-depth research on emulsion explosives, the emulsion explosives developed in the later stage also have detonator sensitivity, and have good water resistance, good explosi...

AI Technical Summary

Problems solved by technology

[0003] However, the current explosive formula design has poor thermal stability. In deep-hole high-temperature blasting, the high temperature generated by the long-term natural heating of the rock mass by coal will cause the explosive or the initiation system to explode prematurely under the action of heat, threatening the safety of blasting operators. life

Even if accidental thermal explosion is not achieved, high temperature will cause thermal decomposition of industrial explosives, which will reduce the performance of explosives and lead to poor blasting effects; therefore, developing a high-temperature-resistant colloidal emulsion explosive is a technical problem to be solved urgently by those skilled in the art