Energy-containing fragment on basis of nanometer Al/M<x>O<y>/oxidizing agents

A technology of oxidizing agents and fragments, which is applied in the direction of explosives, etc., can solve the problems of low energy of Mg and Zr, difficult control of oxygen balance, high sensitivity, etc., and achieve the effect of increasing temperature and duration, long reaction duration, and ensuring penetration effect

Inactive Publication Date: 2016-07-13
ZHONGBEI UNIV
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  • Summary
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AI Technical Summary

Problems solved by technology

[0004] However, not all energetic materials can be used as materials for energetic fragments, such as ordinary explosives or gunpowder.
Simple explosives have three deficiencies: 1) the density is too low (3 ), almost no penetrating effect; 2) the sensitivity is too high, it is easy to be detonated during the explosion driving process, or it will be detonated just when it hits the target; 3) the reaction rate is too fast (microsecond level), and the reaction heat is too concentrated The release of dynamite makes the explosives have no arson effect
The problem with this fragment is the low density ( ρ Al =2.7g / cm 3 , ρ PTFE =2.1~2.3g / cm 3 ), the energy density is low, it is not easy to trigger, the oxygen balance is difficult to grasp, the reaction rate is too slow, and the mechanical properties of the fragments are poor
The problem is that the two simple substances, Mg and Zr, are prone to spontaneous occurrence in the batch preparation process, which increases the difficulty of preparation; and the energy of Mg and Zr is low, such as 2Zr+Fe 3 o 4 =2ZrO 2 The heat release of +3Fe is only 2.6kJ / g, and the price of Zr powder is relatively high; in addition, epoxy resin + polyamide resin is used as binder in the formula, and the dosage is between 15 and 27%. The inert substance is the binder, which seriously affects the energy performance of the fragments

Method used

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  • Energy-containing fragment on basis of nanometer Al/M&lt;x&gt;O&lt;y&gt;/oxidizing agents
  • Energy-containing fragment on basis of nanometer Al/M&lt;x&gt;O&lt;y&gt;/oxidizing agents
  • Energy-containing fragment on basis of nanometer Al/M&lt;x&gt;O&lt;y&gt;/oxidizing agents

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] With 21.8g nano aluminum powder (80nm), 33.5g nano Fe 3 o 4 (50nm), 32.7gBa(NO 3 ) 2 , 4g RDX and 2.5g ferrocene were put into the ball mill and stopped after idling for 15 minutes without adding balls. Add 30 mL of absolute ethanol to the ball mill to make the material wet, then add balls, stop the ball mill after 1 hour, take out the wet material, and dry it in vacuum at 60°C to obtain a mixed Al / Fe 3 o 4 / Ba(NO 3 ) 2 materials.

[0043] Dissolve 2.5 g of NC (11.6% N), 2 g of PVB, and 1 g of DNT in 40 mL of acetone to form a binder solution.

[0044] Mix the above binder solution with Al / Fe 3 o 4 / Ba(NO 3 ) 2 The materials are mixed and kneaded evenly, and granulated with a 12-mesh screen before the materials are dry. The wet granules are evenly dispersed in the tray, and dried at 60°C to obtain the modeling powder.

[0045] Add the molding powder into the fragment mold and cold press at 30 MPa to form it. The formed fragments are kept at 65°C for 5 days ...

Embodiment 2

[0047] 27.4g nano aluminum powder (80nm), 37.4gMnO 2 , 23.2gKClO 4 , 5g PETN and 3g ferrocene were put into the ball mill, idle for 15 minutes without adding balls and then stop. Add 45 mL of absolute ethanol to the ball mill to make the material wet, then add balls, stop the ball mill after 2 hours, take out the wet material, and dry it in vacuum at 55°C to obtain the mixed Al / MnO 2 / KClO 4 materials.

[0048] Dissolve 2 g of NC (12.2% N), 1.5 g of PVB, and 0.5 g of DNT in 30 mL of acetone to form a binder solution.

[0049] Mix the above binder solution with Al / MnO 2 / KClO 4 The materials are mixed and kneaded evenly, and granulated with a 12-mesh screen before the materials are dry. The wet granules are evenly dispersed in the tray, and dried at 60°C to obtain the modeling powder.

[0050] The molding powder was added to the fragment mold and cold-pressed at 40 MPa to form, and the formed fragment was kept at 65°C for 6 days to obtain nano-Al / MnO 2 / KClO 4 Energeti...

Embodiment 3

[0053] 14.2g nanometer aluminum powder (80nm), 52.6gBi 2 o 3 , 21.2gNH 4 ClO 4 , 3g RDX and 2g ferrocene were put into the ball mill, idle for 15 minutes without adding balls, and then stop the machine. Add 40mL of absolute ethanol to the ball mill to make the material wet, then add balls, stop the ball mill after 1.5h, take out the wet material, and dry it in vacuum at 65°C to obtain the mixed Al / Bi 2 o 3 / NH 4 ClO 4 materials.

[0054] Dissolve 3.5 g of NC (12.6% N), 2 g of PVB, and 1.5 g of DNT in 50 mL of tetrahydrofuran to form a binder solution.

[0055] Mix the above binder solution with Al / Bi 2 o 3 / NH 4 ClO 4 The materials are mixed and kneaded evenly, and granulated with a 12-mesh screen before the materials are dry. The wet granules are evenly dispersed in the tray, and dried at 60°C to obtain the modeling powder.

[0056] The molding powder was added to the fragment mold and cold-pressed at 25MPa to form it. The formed fragment was kept at 60°C for 8 d...

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Abstract

The invention relates to an energy-containing fragment with nanometer Al/M<x>O<y>/oxidizing agents.The energy-containing fragment comprises, by weight, 10-30% of nanometer aluminum powder, 30-60% of transition metal oxide (the M<x>O<y>), 10-40% of the oxidizing agents, 1-5% of ferrocene, 1-7% of high explosive and 3-8% of mixed binders.The energy-containing fragment has the advantages that the energy-containing fragment is high in energy density and fire setting capacity, good in safety performance and easy to ignite, immediate reaction can be prevented when the energy-containing fragment is driven by explosive, but violent chemical reaction can be carried out in penetration procedures, extremely high-temperature heat can be released, and high-temperature hot reaction products with flowability can be generated.

Description

technical field [0001] The invention belongs to the technical field of preparation of energetic materials, in particular to a nanometer Al, M x o y , Energetic fragments made of oxidants, mainly used in the field of high-efficiency damage. Background technique [0002] Fragments used in the field of warhead damage mainly include inert fragments, ordinary active fragments and energetic fragments. Among them, inert fragments are generally made of metals with high density such as steel, copper, tungsten and their alloys; ordinary active fragments are made of combustible metals such as zirconium, magnesium, uranium and their alloys; energetic fragments are It is a composite structural fragment composed of energetic materials, which is mainly aimed at a new type of warhead with a relatively simple process structure and relatively low requirements for guidance accuracy. [0003] After the warhead explosive explodes, the energy of the detonation drives the fragments to fly out a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/12C06B33/14
CPCC06B33/12C06B33/14
Inventor 王毅宋小兰安崇伟宋丹
Owner ZHONGBEI UNIV
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