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Poured-type azido high-polymer bonded explosive and preparation method of same

A bonded explosive and azide-based technology, which is applied in explosives and other fields, can solve the problems of limiting the comprehensive performance level of PBX explosives, and achieve the effects of overcoming high performance and high sensitivity, increasing energy levels, and shortening curing reaction time

Active Publication Date: 2016-02-10
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, castable HTPB-based PBX explosives that have been applied can only choose inert non-energetic plasticizers for their systems, which limits the comprehensive performance level of PBX explosives to a certain extent.

Method used

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  • Poured-type azido high-polymer bonded explosive and preparation method of same
  • Poured-type azido high-polymer bonded explosive and preparation method of same
  • Poured-type azido high-polymer bonded explosive and preparation method of same

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Embodiment 1

[0052] Table 1 shows the composition and properties of the 1# formula of the present invention and the HTPB-based PBX explosive formula (code PBXN-109) that has been used in the United States.

[0053] Table 11# and PBXN-109 formula composition and performance

[0054]

[0055] It can be seen from Table 1 that the explosive heat, explosive volume, and density of 1# formula are 6691kJ / kg, 834L / kg, and 1.84g / cm respectively. 3 , significantly higher than the PBXN-109 formulation.

Embodiment 2

[0057] The following table 2 has provided PBX explosive 2# formula composition and performance of the present invention:

[0058] Table 22# formula composition and performance

[0059]

[0060] It can be seen from Table 2 that when the curing temperature is 60°C, the curing time of 2# formula is 4 days, the detonation heat is 7167kJ / kg, the detonation volume is 849L / kg, and the power is 1.71TNT. The sensitivities are 49.1J and 20% respectively.

Embodiment 3

[0062] The following table 3 provides PBX explosive 3# formula composition and performance of the present invention:

[0063] Table 33# formula composition and performance

[0064]

[0065] Among them, GAP / PET (3 / 1) is the mass ratio, and NG / TEGDN (2 / 1) is the mass ratio.

[0066] It can be seen from Table 3 that the detonation heat of 3# formula is 6957kJ / kg, the detonation volume is 865L / kg, the power is 1.70TNT, when the curing temperature is 50 ℃, the 3# formula 3.5d curing reaction is complete, and the 3# formula The drop weight impact sensitivity and friction sensitivity are 50.3J and 16% respectively.

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Abstract

A poured-type azido high-polymer bonded explosive and a preparation method of same. For solving a problem of low energy of an HTPB-based PBX explosive, an azido polyether energetic binder is added to a formula system of the PBX explosive, and by means of addition of an alkynol compound as a curing additive agent, a curing reaction time of the azido polyether binder system is greatly reduced. By means of addition of a high-energy-density main explosive and a metal fuel component, the obtained poured-type azido PBX explosive has high explosion heat and explosion volume, is higher than 1.80 g / cm<3> in density and is more than 1.60 TNT in power. Meanwhile, the poured-type azido PBX explosive has a low sensitivity level, is higher than 49 J in drop hammer impact energy I50 and is not more than 40% in friction sensitivity.

Description

technical field [0001] The invention relates to a pouring type azide-based high polymer bonded explosive formula, which belongs to the field of propellant and explosive formula development. Background technique [0002] Improving the destructive power of ammunition and reducing the vulnerability of ammunition are long-term research goals in the field of ammunition. Over the years, countries around the world have been making unremitting efforts around this goal, and vigorously developing cast polymer bonded explosives (PBX) has been proved to be one of the effective ways to develop low-fragile explosives. Glycidyl azide (GAP) is an energetic prepolymer whose main chain is polyether structure and side chain contains azide group, because of its high density, positive heat of formation, low mechanical sensitivity and thermal stability Among the many energetic adhesives, GAP has become a more researched and relatively mature variety. In the field of composite solid propellants,...

Claims

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Application Information

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IPC IPC(8): C06B27/00
Inventor 陈中娥吴翼曹仕瑾王宁李忠友
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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