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Anti-high overload pressed explosive and preparation method thereof

A technology for press-packing explosives and explosives, applied in explosives processing equipment, explosives, nitrated acyclic/alicyclic/heterocyclic amine explosive compositions, etc., which can solve a large amount of waste liquid, pollute the environment, increase manufacturing costs and process complexity problems such as alleviating sliding and debonding, large specific surface area, reducing temperature and probability of occurrence

Inactive Publication Date: 2019-01-15
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reports on press-packed formulas mainly involve the manufacturing process. Press-packed explosives are generally prepared by the traditional water suspension method or direct method. This process is widely used and low in cost, but the process produces a lot of waste liquid and pollutes the environment, requiring special facilities to be recycled, increasing the manufacturing cost and complexity of the process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The present embodiment is implemented with reference to the composition formula of following percentage by weight:

[0035] 70% Octometallic (HMX), 24% Al powder, 1% polyacrylate rubber (ACM), 3% microcrystalline wax, 1% polyvinylpyrrolidone (PVP), 1% graphite (G).

[0036] The process of preparing 300g of modeling powder using the above formula is as follows: weigh 210g of HMX, 72g of Al powder, 3g of ACM, 9g of microcrystalline wax, 3g of PVP and 3g of G according to the composition of the formula, and dissolve 3g of ACM in 22ml of ethyl acetate to make a concentration of 13% binder solution, heat up the water bath of the mixer to 55°C, pour the above binder solution into the mixing pot, then add the weighed microcrystalline wax and PVP, start mixing for about 10 minutes, and the mixture will form a uniform "Emulsion", add the weighed HMX into the mixing pot at one time, and continue to mix for 20 minutes. When the solvent volatilizes to form a viscous material, add t...

Embodiment 2

[0039] This example is carried out with reference to the following formula by weight percentage: 62% Octometallic (HMX), 32% Al powder, 1% EPDM (EPDM), 3.5% microcrystalline wax + polyethylene wax (microcrystalline Wax: polyethylene wax=3:1), 0.5% polyethyleneimine (PEI), 1% graphite (G).

[0040]The process of preparing 300g modeling powder with the above formula is as follows: weigh 186g HMX, 96g Al powder, 3g EPDM, 10.5g mixed wax, 1.5g PEI and 3g G according to the formula composition, dissolve 3g EPDM in 18mL 90# solvent oil and mix A binder solution with a concentration of 17% was poured into the mixing pot, then the weighed mixed wax and PEI were added, and the preparation process of the rest of the modeling powder was basically the same as in Example 1.

[0041] The amount of solvent used in this process is 60mL / kg, which is much lower than that of the conventional press-packed explosive preparation process. Obtain low mechanical sensitivity of anti-high overload expl...

Embodiment 3

[0043] This example is carried out with reference to the following formula by weight percentage: 50% RDX, 44% Al powder, 2% silicone rubber (Q), 3.5% silicone wax, 0.5% polysiloxane (W).

[0044] The process of preparing 300g modeling powder with the above formula is as follows: weigh 150g RDX, 132g Al powder, 6g Q, 10.5g silicone wax, 1.5g W according to the formula composition, dissolve 6g Q in 30mL ethyl acetate to make a concentration of 18 % binder solution for use, pour the above binder solution into a mixing pot, then add the weighed silicone wax and W, and the preparation process of the rest of the modeling powder is basically the same as in Example 1.

[0045] The amount of solvent used in this process is 100mL / kg, which is far lower than that of the conventional press-packed explosive preparation process. Obtain low mechanical sensitivity of anti-high overload explosive molding powder (the friction sensitivity is 8%, the test condition is 90 0 Pendulum angle, under ...

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Abstract

The invention relates to an anti-high overload pressed explosive and a preparation method thereof. The anti-high overload pressed explosive comprises: 50%-70% mass percentage of main body explosive HMX or RDX; 24%-44% mass percentage of metal fuel Al powder; 1%-3% mass percentage of a binder; 3%-6% mass percentage of a desensitization agent; 0%-1% mass percentage of a coupling agent; and 0%-1% mass percentage of an additive graphite G. The invention also discloses a preparation method of the explosive. The explosive provided by the invention has very good anti-high overload performance, safetyperformance and energy performance, low mechanical sensitivity, can pass the examination of 100mm experimental gun-projectile target penetrating test, and can meet the main charge requirements of various temperatures and pressures, penetrations and earth-penetrating warheads. The anti-high overload pressed explosive provided by the invention has high energetic component content, and compared withthe traditional penetration cast explosive PBXIH-135, the density, detonation velocity, explosion heat and other energy parameters are improved.

Description

technical field [0001] The invention relates to a high-overload-resistant press-loaded explosive and a preparation method thereof, belonging to the field of energetic materials for military use. Background technique [0002] For a long time, the research on anti-overload explosives has always been a frontier key technology that countries all over the world attach great importance to. [0003] In the former Soviet Union countries headed by Russia, the penetrating ammunition charges are still dominated by aluminum-containing TNT-based mixed explosives and A-IX-II, and the filling method basically adopts the casting process or press-fitting process. The melting and casting process mainly uses TNT as the base explosive, and the packing density and charge power are relatively low. At the same time, due to the large difference in the solid phase density of the charge liquid, it is difficult to overcome the charge defects, and the anti-overload intrinsic safety is poor. [0004] ...

Claims

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Application Information

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IPC IPC(8): C06B21/00C06B25/34
CPCC06B21/00C06B25/34
Inventor 曹仕瑾李忠友陈中娥王鹏熊伟强高扬程迪赵新岩徐剑屏陈志毅
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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