KR20030081018A - Pressed insensitive explosive mixture - Google Patents

Abstract

The present invention is insensitive to HYTEMP® and DAO binder systems using octogen, hexogen crystals and conventional solvents having two types of particle compositions comprising granules of 280-360 μm and fine particles of 15-45 μm. Explosive mixtures. Explosive mixtures belonging to the class of insensitive and having little sensitivity in the GAP test by STANAG 4170 are obtained.

Description

Insensitive compressed explosive mixture {PRESSED INSENSITIVE EXPLOSIVE MIXTURE}

The present invention relates to the insensitive compressed explosive mixture according to claim 1.

Explosive mixtures of this kind are known from German Patent Publication No. 199 55 657A1. Explosive crystals such as hexogen, octogen and CL20 have a binder matrix comprising very fine TATB (1,3,5-triamino-2,4,6-trinitrobenzene) sonically produced. This explosive was classified as almost insensitive in the GAP test. The required compressive force is more than 2 kbar.

It is an object of the present invention to propose an insensitive explosive mixture which is very simple to manufacture and can achieve very high compacted body densities by achieving a theoretical maximum density of at least 98% with a minimum possible compaction pressure of less than 1 kbar.

The present invention achieves the above object by the features of the invention described in claim 1. Advantageous modifications of the invention are described in the additional claims.

Preferably, the present invention achieves high packing density for high explosion pressures and speeds, in addition to insensitivity. By applying a low compression pressure, the explosives are easy to put into the complex housing and press in. A low pressing pressure is applied to prevent crystal destruction of explosives. The use of inexpensive octogen and hexogen of class B is not a problem.

Filling can be reused by fresh granulation.

Example

Example 1

-8% binder system and octagen mixture-near sensitivity limit by TL (TL = 1376-800)

Particle compositions of two types of composition

-Granulator with average particle size of 280 ~ 360㎛

15 μm fine particles

-Solvents of HYTEMP® and DOA binder systems with a content ratio of 1: 3

Acetone 3 to 10 times the mass of the binder system

Compression pressure of the explosion mixture on a 50 mm diameter device: 1.5 kbar

result:

Does not start below 31 kbar.

Example 2

-8% binder system and octogen mixture-significant distance to the sensitivity limit by the TL

It was the same as in Example 1 except for the following difference.

-Granulator with average particle size of 280 ~ 320㎛

-Fine particles having an average particle diameter of 30 to 45 µm

Solvent mixture: ethyl acetate / acetone / ethanol ratio 20% / 20% / 60%

Compression pressure for devices of 50 mm diameter: 1.0 kbar

result:

Does not start below 36 kbar.

Example 3

4% Binder System and Octogen Mixture-Near the Susceptibility Limit by the TL

It was the same as in Example 2 except for the following difference.

-Granules with an average particle diameter of 280 to 300 μm, crystals <500 μm

Solvent mixture: ethyl acetate / acetone ratio 50% / 50%

Compression pressure for devices of 50 mm diameter: 0.95 kbar

result:

Does not start below 26 kbar.

Example 3.1

-8% binder system and octogen mixture-less sensitive, near STANAG 4170

Except for the following difference was the same as in Example 3.

Compression pressure for 110 mm diameter devices: 0.65 kbar-0.7 kbar

Compression pressure for devices of 50 mm diameter: 0.95 kbar

result:

Does not start below 46 kbar.

Example 4

-Class B RDX, Binder 8% and Hexogen Mixture-Distance to insensitive sensitivity by TL

Two kinds of particle compositions according to example 3

-Particle diameter of assembler <700㎛

Inherent crimping pressure required for devices with a diameter of 50 mm <0.95 kbar

Inherent crimping pressure required for devices with a diameter of 110 mm 0.65 to 0.7 kbar

result:

Does not start below 28 kbar.

Due to the two types of particle size distribution and the composition of the solvents for the production of the binder lacquers HYTEMP® and DOA and the differences in the solvent mixing ratios in the lacquers, the explosive mixtures differ in sensitivity, and the sensitivity of the STANAG 4170 in the GAP test is almost And reached a theoretical density, with a fixed compression pressure (determined by diameter) of 0.6-0.9 kbar, reaching a theoretical density of 98% or more.

Explanation of Trade Names and Abbreviations

HYTEMP® United States 40211 Registered trade name of ZEON Chemical L.P., Bell Lane 4100, Louisville, KY

Plasticizer Type *

* Acycl. Dacoxy Acid Ester

Esters of adipic acid, such as DOA di-2-ethylhexyl adipate

DIDA diisodecyl adipate

Phthalate

DOP Di-2-ethylhexylphthalate

DINP Di-Iononyl

DIDP diisodecyl phthalate

* Polymer plasticizer

According to the present invention, explosion mixtures belonging to the class of different insensitivity and little sensitivity by STANAG 4170 in the GAP test are obtained.

Claims (5)

An insensitive compressed explosive mixture in which explosive crystals are bound by a binder system, Two kinds of particle compositions comprising coarse particles and particulate explosion crystals are combined into a binder system comprising a plasticizer and HYTEMP® and prepared by solvent treatment. Insensitive compressive explosion mixture. The method of claim 1, An insensitive compressive explosion mixture having an average particle diameter of the granules of 280 to 360 µm, an upper limit of 500 to 700 µm, and a particle diameter of 15 to 45 µm. The method of claim 1, An insensitive compressive explosion mixture wherein said plasticizer is selected from the group consisting of: * Acycl. Dacoxy Acid Ester Esters of adipic acid, such as DOA di-2-ethylhexyl adipate DIDA diisodecyl adipate Phthalate DOP Di-2-ethylhexylphthalate DINP Di-Iononyl DIDP diisodecyl phthalate * Polymer plasticizer. The method of claim 1, An insensitive compressive explosion mixture in which the solvent acetone content of the binder system is 3-10 times the mass of the binder system. The method of claim 1, An insensitive compressive explosion mixture wherein said solvent is a mixture comprising 20% / 20% / 60% ethyl acetate, acetone and ethanol or 50% / 50% ethyl acetate and acetone.