Low temperature resistant water-resisting gelatinous emulsion explosive and preparation method thereof

Abstract

The invention discloses a low temperature resistant water-resisting gelatinous emulsion explosive. The emulsion explosive comprises the following ingredients: ammonium nitrate, sodium nitrate, sodium perchlorate, calcium nitrate, urea, an oil phase, water, an emulsifier, a sensitizer, an auxiliary sensitizer, a crystal modifier and polyvinyl alcohol, wherein the emulsifier is polyisobutene diacid alkylol amine; the sensitizer is sodium nitrite or ammonium bicarbonate; the crystal modifier is sodium dodecyl benzene sulfonate; and the auxiliary sensitizer is one or a mixture of glass microspheres, resin microspheres, perlite and expanded perlite. The invention also designs a preparation method of the low temperature resistant water-resisting gelatinous emulsion explosive. The explosive has good water resistance and can be stored in flowing water. In addition, as the explosive structure is not easy to destroy under low-temperature condition, the explosive can be stored under low-temperature condition. Meanwhile, gas released during explosive initiation has low toxicity; the raw materials are easily available, and price is relatively low; and a preparation process of the explosive is simple and cost is low.

Description

technical field [0001] The invention relates to an emulsion explosive and a preparation method thereof, in particular to a low-temperature and water-resistant colloidal emulsion explosive and a preparation method thereof. Background technique [0002] Emulsion explosive is a new type of water-in-oil ammonium nitrate explosive. This explosive is prepared by a series of emulsification production processes with aqueous solution of ammonium nitrate, nitrate, etc. as the dispersed phase and carbonaceous oil phase as the continuous phase. A water-in-oil type mixed explosive. Due to the special water-in-oil structure of the emulsion explosive, it has the advantages of strong water resistance, low mechanical sensitivity, and good explosive performance. That is to say, the emulsion explosive itself has detonator sensitivity, so the production of harmful gas after the explosion is less, the use is safe and environmentally friendly, and the performance of the explosive itself has been ...

AI Technical Summary

Problems solved by technology

[0003] However, when using emulsion explosives, it was found that when used in high-latitude areas, after being transported and stored at low temperature, the explosive coils appeared to resist explosion during use, and the appearance of the explosive coils appeared to be shortened and hardened. After further inspection, it was found that the emulsion of the explosives broke. Crystallization of water phase material

According to historical records, the lowest temperature in winter in northern my country is above -40°C, and the temperature in normal years is -30°C for about 20 days per year. Therefore, the existing emulsion explosives are easily damaged at low temperatures and are not suitable for normal use in winter in the north. and storage, so developing a kind of low temperature and water-resistant colloidal emulsion explosive is a problem to be urgently solved by those skilled in the art