CN112174760B - TNT (trinitrotoluene) -based fusion cast explosive based on heavy metal particle killer and preparation method thereof - Google Patents
TNT (trinitrotoluene) -based fusion cast explosive based on heavy metal particle killer and preparation method thereof Download PDFInfo
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- CN112174760B CN112174760B CN202011143380.6A CN202011143380A CN112174760B CN 112174760 B CN112174760 B CN 112174760B CN 202011143380 A CN202011143380 A CN 202011143380A CN 112174760 B CN112174760 B CN 112174760B
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B27/00—Compositions containing a metal, boron, silicon, selenium or tellurium or mixtures, intercompounds or hydrides thereof, and hydrocarbons or halogenated hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
- C06B23/001—Fillers, gelling and thickening agents (e.g. fibres), absorbents for nitroglycerine
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B25/00—Compositions containing a nitrated organic compound
- C06B25/34—Compositions containing a nitrated organic compound the compound being a nitrated acyclic, alicyclic or heterocyclic amine
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Abstract
The invention discloses a TNT-based fusion cast explosive based on heavy metal particle killer cells, which is prepared from 13.5-30.0 parts by weight of TNT explosive, 31.5-40.0 parts by weight of high-energy explosive hexogen or octogen, 30.0-55.0 parts by weight of high-density heavy metal particles and 1.0-3.0 parts by weight of thickening agent. The fusion-cast explosive disclosed by the invention adopts high-density heavy metal particles as the damage elements, so that the mixing uniformity is good, the flying distance of the damage elements can be effectively controlled, and the killing range can be accurately controlled, so that the requirement of controlling the flying range of the damage elements by low-attached damage ammunition is met.
Description
Technical Field
The invention belongs to the technical field of energetic material preparation, relates to a fusion cast explosive, and particularly relates to a fusion cast explosive containing heavy metal particle killing elements and a preparation method thereof.
Background
The traditional ammunition is that high-energy explosive is filled in a metal shell, after the high-energy explosive explodes, the metal shell is rapidly expanded and broken under the action of explosion energy to form a large number of fragments, the metal fragments fly around under the loading of the explosion energy, and after the metal fragments collide with obstacles, the metal fragments can kill and destroy surrounding personnel and facilities due to the large kinetic energy of the metal fragments.
Because the shape and the mass of the fragments formed when the metal shell is rapidly cracked under the action of the explosion energy are different greatly, under the loading of the explosion energy of the explosive, the flying distances are different, the flying range is difficult to control, and the metal shell can also generate an additional damage effect on people and equipment near a target while killing the given target.
In modern anti-terrorism battles and urban street battles, the battle tasks are not limited to large-scale destructive damage to targets any more, but require killing units to have greater power in a short distance, and ensure efficient damage; the power then drops rapidly to allow collateral damage control to a lesser extent, protecting innocent people and facilities near the target.
A certain amount of micron-sized heavy metal particles are added into the explosive to replace fragments formed by the traditional metal cartridge case, so that the flying distance of the killing elements can be greatly reduced, the flying range of the killing elements is controlled, and the damage of the ammunition is controlled within a preset range. However, because the specific gravity difference between the heavy metal particles and the explosive is large, the heavy metal particles cannot be uniformly distributed in the explosive charge and are easy to settle at the bottom of the charge, so that the charge density is not uniform, the explosive performance of the explosive is unstable, the scattering range of the heavy metal particles is changed, and the damage effect is affected.
The TNT-based fusion cast explosive has the advantages of low cost, simple and safe charging process, easiness in adjusting the explosion energy of the TNT-based fusion cast explosive by adjusting the components of the high-energy explosive, and the like, heavy metal particles are selectively added into the TNT-based fusion cast explosive, and the uniform TNT-based fusion cast explosive containing the high-density heavy metal particles is prepared by adjusting the process parameters in the fusion casting process, so that the method is a method for effectively controlling the scattering range of a killing element and realizing low collateral damage.
Disclosure of Invention
The invention aims to provide a TNT-based fusion-cast explosive based on heavy metal particle killing elements with better density uniformity and a preparation method thereof, so as to meet the requirement of controlling the flying range of the killing elements by low collateral damage ammunition.
The TNT-based fusion cast explosive based on the heavy metal particle killer cells is prepared from 13.5-30.0 parts by weight of TNT explosive, 31.5-40.0 parts by weight of high-energy explosive hexogen or octogen, 30.0-55.0 parts by weight of high-density heavy metal particles and 1.0-3.0 parts by weight of thickening agent.
The thickening agent can ensure the distribution uniformity of high-density heavy metal particles and improve the safety performance of the fusion cast explosive. Specifically, the thickener is one or more of polyethylene glycol 4000, nitrocotton and ozokerite.
According to the invention, high-energy explosive hexogen or HMX is added into the TNT-based fusion cast explosive, so that the mixing uniformity of components in the fusion cast explosive and the explosion energy of the fusion cast explosive can be ensured. Preferably, the high explosive hexogen or HMX adopts industrial grade 2 hexogen or HMX.
Furthermore, in order to control the scattering range of the damaged element, the diameter of the high-density heavy metal particles is 150-300 μm, and the high-density heavy metal particles adopt one of nearly spherical tungsten particles or tungsten carbide particles.
Furthermore, the invention also provides a preparation method of the TNT-based fusion cast explosive based on the heavy metal particle killer cells, and the preparation method is specifically carried out according to the following method.
1) And heating 13.5-30.0 parts by weight of TNT explosive to 90 ℃ to completely melt the TNT explosive.
2) And adding 1.0-3.0 parts by weight of a thickening agent into the molten TNT explosive, and stirring and mixing uniformly.
3) And cooling to 85 ℃, adding 31.5-40.0 parts by weight of high-energy explosive hexogen or HMX, and stirring and mixing uniformly.
4) And controlling the temperature of the system to be 78-85 ℃, adding 30.0-55.0 parts by weight of high-density heavy metal particles, and stirring at a low speed to uniformly mix to obtain the melt-cast explosive liquid medicine.
5) Preheating a mould to 45-55 ℃, casting the uniformly mixed fused cast explosive liquid medicine into the mould, keeping the temperature in an oven at 45-55 ℃ for 30min, and opening the mould to obtain the TNT-based fused cast explosive based on the heavy metal particle killer cells.
The TNT-based fusion-cast explosive based on the heavy metal particle killing element adopts the high-density heavy metal particles as the damaging element, can effectively control the flying distance of the damaging element, and accurately controls the killing range.
According to the TNT-based fusion cast explosive disclosed by the invention, through regulation and control of explosive mixed components, selection of a thickening agent, regulation and control of a charging sequence and temperature in a preparation process, the condition that high-density heavy metal particles in the explosive composition are not settled is ensured, the TNT-based fusion cast explosive is uniformly mixed in the explosive components, and the component deviation of the prepared fusion cast explosive is less than 3.0%.
Furthermore, the mechanical strength of the prepared fused cast explosive column is improved due to the addition of the high-density heavy metal particles.
The TNT-based fusion-cast explosive based on the heavy metal particle killer has wide application prospect in low-incidental-damage weapon warhead charging.
Detailed Description
The following examples further describe embodiments of the present invention. The following examples are only for illustrating the technical solutions of the present invention more clearly, and do not limit the scope of the present invention. Various changes, modifications, substitutions and alterations to these embodiments will be apparent to those skilled in the art without departing from the principles and spirit of this invention.
Example 1.
22g of TNT explosive is weighed, heated to 90 ℃ and completely melted, and then 3g of thickener polyethylene glycol 4000 is added, stirred and mixed evenly.
Cooling to 85 ℃, adding 42g of high-energy component cyclonite, and stirring and mixing uniformly.
Controlling the temperature to be 78-85 ℃, adding 33g of near-spherical tungsten particles with the particle size of 150-200 mu m, and stirring and mixing uniformly at a low speed to obtain the explosive liquid medicine.
Preheating a mould to 45-55 ℃, casting the uniformly mixed explosive liquid medicine into the mould, placing the mould in a 45-55 ℃ heat preservation box for heat preservation for 30min, and opening the mould to obtain the TNT-based fusion casting explosive column containing the heavy metal particles with the diameter of 20mm and the height of 20 mm.
The test shows that the average density of the TNT-based fusion cast explosive containing the heavy metal particles is 2.44g/cm3.1 part by mass of 1g of a cubic sample was taken from each of the upper end face central region, the intermediate layer central region, and the lower end face central region of the cylindrical test piece, and the tungsten particle contents of the three samples were measured to be 32.79%, 33.21%, and 33.83%.
4 TNT-based fusion-cast explosive columns containing heavy metal particles are connected in series, a No. 2 flame detonator and a JH-14 booster explosive column (1.35 g) are used for detonation, and a soap target with the Shore hardness of 50-60 degrees is used for a targeting experiment. The maximum penetration depth of the killing element on soap targets placed at the positions 0.6m, 0.8m and 1.0m away from the center of pop is 5.89mm, 4.85mm and 2.79mm respectively.
Example 2.
27.5g of TNT explosive is weighed, heated to 90 ℃ and completely melted, 2g of thickening agent ceresin is added, and the mixture is stirred and mixed uniformly.
Cooling to 85 ℃, adding 40g of high-energy component HMX, and stirring and mixing uniformly.
Controlling the temperature to be 78-85 ℃, adding 30.5g of near-spherical tungsten particles with the particle size of 150-200 mu m, and stirring and mixing uniformly at a low speed to obtain the explosive liquid medicine.
Preheating a mould to 45-55 ℃, casting the uniformly mixed explosive liquid medicine into the mould, placing the mould in a 45-55 ℃ heat preservation box for heat preservation for 30min, and opening the mould to obtain the TNT-based fusion-cast explosive column containing heavy metal particles.
The test shows that the average density of the TNT-based fusion cast explosive containing the heavy metal particles is 2.38g/cm3.1 part by mass of 1g of a cubic sample was taken from each of the upper end face central region, the intermediate layer central region, and the lower end face central region of the cylindrical sample, and the tungsten particle contents of the three samples were found to be 29.73%, 30.39%, and 31.21%.
And (3) connecting 4 TNT-based fusion-cast explosive columns (the diameter is 20mm, the height is 20 mm) containing heavy metal particles in series, detonating by using a No. 2 flame detonator and a JH-14 booster explosive column (1.35 g), and carrying out a targeting experiment aiming at a soap target with the Shore hardness of 50-60 degrees. The maximum penetration depth of the killing element on soap targets placed at the positions 0.6m, 0.8m and 1.0m away from the center of pop is 5.31mm, 4.47mm and 2.37mm respectively.
Example 3.
19.3g of TNT explosive is weighed, heated to 90 ℃ and completely melted, 1g of thickening agent nitrocotton is added, and the mixture is stirred and mixed uniformly.
Cooling to 85 ℃, adding 45g of high-energy component hexogen, and stirring and mixing uniformly.
Controlling the temperature to be 78-85 ℃, adding 34.7g of spherical tungsten carbide particles with the particle size of 200-300 mu m, and stirring and mixing uniformly at a low speed to obtain the explosive liquid medicine.
Preheating a mould to 45-55 ℃, casting the uniformly mixed explosive liquid medicine into the mould, placing the mould in a 45-55 ℃ heat preservation box for heat preservation for 30min, and opening the mould to obtain the TNT-based fusion-cast explosive column containing heavy metal particles.
The test shows that the average density of the TNT-based fusion cast explosive containing the heavy metal particles is 2.35g/cm3.1 part by mass of 1g of a cubic sample was taken from each of the upper end face central region, the intermediate layer central region, and the lower end face central region of the cylindrical test piece, and the tungsten particle contents of the three samples were found to be 33.79%, 34.36%, and 34.63%.
And (3) connecting 4 TNT-based fusion-cast explosive columns (the diameter is 20mm, the height is 20 mm) containing heavy metal particles in series, detonating by using a No. 2 flame detonator and a JH-14 booster explosive column (1.35 g), and carrying out a targeting experiment aiming at a soap target with the Shore hardness of 50-60 degrees. The maximum penetration depth of the killing element on soap targets placed at the positions 0.6m, 0.8m and 1.0m away from the center of pop is 9.65mm, 6.89mm and 3.12mm respectively.
Claims (3)
1. A TNT-based fusion cast explosive based on a heavy metal particle killer element is a fusion cast explosive prepared from 13.5-30.0 parts by weight of TNT explosive, 31.5-40.0 parts by weight of high-energy explosive hexogen or octogen, 30.0-55.0 parts by weight of high-density heavy metal particles and 1.0-3.0 parts by weight of thickening agent serving as raw materials, wherein the high-density heavy metal particles are tungsten particles or tungsten carbide particles, the particle diameter is 150-300 mu m, and the thickening agent is one or more of polyethylene glycol 4000, nitrocotton and ozokerite.
2. The TNT-based fusion cast explosive according to claim 1, wherein said high explosive hexogen or octogen is grade 2 hexogen or octogen.
3. The method for preparing the TNT-based fusion cast explosive based on the heavy metal particle killer cells as claimed in claim 1, which comprises the following steps:
1) heating 13.5-30.0 parts by weight of TNT explosive to 90 ℃ to completely melt the TNT explosive;
2) adding 1.0-3.0 parts by weight of a thickening agent into the molten TNT explosive, and stirring and mixing uniformly;
3) cooling to 85 ℃, adding 31.5-40.0 parts by weight of high-energy explosive hexogen or HMX, and stirring and mixing uniformly;
4) controlling the temperature of the system to be 78-85 ℃, adding 30.0-55.0 parts by weight of high-density heavy metal particles, and stirring at a low speed to uniformly mix to obtain a molten and cast explosive liquid medicine;
5) preheating a mould to 45-55 ℃, casting the uniformly mixed fused cast explosive liquid medicine into the mould, keeping the temperature in an oven at 45-55 ℃ for 30min, and opening the mould to obtain the TNT-based fused cast explosive based on the heavy metal particle killer cells.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010040947A1 (en) * | 2008-10-06 | 2010-04-15 | Eurenco | Cutting detonating cord |
| CN103588595A (en) * | 2013-11-15 | 2014-02-19 | 中国工程物理研究院化工材料研究所 | Metal fiber toughened and enhanced TNT (trinitrotoluene)-based melt-cast explosive and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010040947A1 (en) * | 2008-10-06 | 2010-04-15 | Eurenco | Cutting detonating cord |
| CN103588595A (en) * | 2013-11-15 | 2014-02-19 | 中国工程物理研究院化工材料研究所 | Metal fiber toughened and enhanced TNT (trinitrotoluene)-based melt-cast explosive and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| T N T 类熔铸***中几种添加剂及其作用;张光全;《2103年第二届全国危险物质与安全应急技术研讨会论文集》;20131231;第172-179页 * |
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