Formula of HMX-TNT-based melt-cast explosive viscosity reducer

Abstract

The invention discloses a formula of an HMX-TNT-based melt-cast explosive viscosity reducer. The formula comprises naphthalene, stearic acid and octadecanol which are mixed according to the mass ratioof 1:2:(0.5-2), the formula of the viscosity reducer is applied to a 5 [mu]m superfine HMX / TNTmelt-cast explosive system, the mass ratio of the viscosity reducer is 2%, and when the mass ratio of HMXin the system is 50%, the viscosity of the system can be reduced by 21%; when the mass ratio of HMX in the system is 55%, the viscosity of the system can be reduced by 27%; when the mass ratio of HMXin the system is 60%, the viscosity of the system can be reduced by 33%; when the mass ratio of HMX in the system is 65%, the viscosity of the system can be reduced by 37%; and when the mass ratio ofHMX in the system is 70%, the viscosity of the system can be reduced by 42%. The viscosity reducer is simple to prepare and operate, safe, reliable, low in toxicity and low in cost, can effectively reduce the viscosity of the HMX-TNT-based melt-cast explosive with the high HMX mass ratio, and improves the flowability.

Description

technical field [0001] The invention relates to a viscosity-reducing agent formula for HMX-TNT-based melting and casting explosives, and belongs to the technical field of energetic material preparation. Background technique [0002] Melted explosives are a type of mixed explosives that add high-energy component explosives to the molten explosive medium to form a fluid state. Among them, rheological properties, as one of the important physical properties of melt-cast explosives, have attracted the attention of many scholars. Rheological properties refer to the properties of a substance deformed and flowed by external forces, including fluidity and leveling. The manufacturing of fused-cast explosives involves molding processes such as mixing and casting, in which the fluidity of the slurry will have a significant impact on the molding and casting quality of the powder column. The fluidity of the slurry can be characterized by the apparent viscosity, the greater the viscosity...

AI Technical Summary

Problems solved by technology

For high HMX mass ratio melt-cast explosives, the components of the slurry with poor fluidity are not easy to mix evenly, the pouring speed is slow, and even the powder piles up after pouring to form defects such as voids, cracks or bottom gaps.

[0003] HMX / TNT-based fused-cast explosives with a high HMX mass ratio can no longer meet the requirements of weapons and equipment in the new era due to the disadvantage of high viscosity and difficulty in fully mixing. The negative effects of high viscosity are mainly manifested in the following aspects: ①Overall The energy level is low, especially the content of high-energy explosives in domestic molten casting charges is generally below 65%, the density is low, and the detonation performance is not ideal; ② Casting products are prone to quality defects, uneven density, and high-precision control is difficult. Defects such as shrinkage cavities, pores and bottom gaps not only affect the detonation performance, but also affect the safe use performance of weapons; ③The mechanical properties are not ideal, the elasticity and toughness are poor, the strength is low, and it is brittle. When it works, damage, cracks, brittle cracks, etc. are prone to occur; ④ Poor safety performance, high sensitivity, easy to die, easy to be detonated by debris and jets, and easy to turn into detonation when burning

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