CN112299934A - Thermite for destroying cased ammunition and preparation method thereof - Google Patents
Thermite for destroying cased ammunition and preparation method thereof Download PDFInfo
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- CN112299934A CN112299934A CN202011230412.6A CN202011230412A CN112299934A CN 112299934 A CN112299934 A CN 112299934A CN 202011230412 A CN202011230412 A CN 202011230412A CN 112299934 A CN112299934 A CN 112299934A
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- thermite
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- polyethylene glycol
- destroying
- oxide powder
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
- C06B33/12—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being two or more oxygen-yielding compounds
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0008—Compounding the ingredient
- C06B21/0025—Compounding the ingredient the ingredient being a polymer bonded explosive or thermic component
Abstract
The invention relates to a thermite for destroying cased ammunition, which consists of the following components: 45-48 wt% of ferric oxide, 13-16 wt% of copper oxide, 18-20 wt% of aluminum and 18-20 wt% of polyethylene glycol. The invention also discloses a preparation method of the thermite for destroying the cased ammunition, the thermite for destroying the cased ammunition uses 4 common and easily available raw materials, the preparation process is simple, the operation is easy, the produced thermite is convenient to use, less in slag adhering and good in fusion effect, and is more suitable for destroying the ammunition in a battlefield environment.
Description
Technical Field
The invention relates to a thermite and a preparation method thereof, in particular to a thermite for destroying cased ammunition and a preparation method thereof.
Background
When the metal oxide and the high reducing substance in the thermite are subjected to oxidation-reduction reaction, the released high temperature can reach 2000-2800 ℃, the thermite is put into a special burner to enable the combustion product to be sprayed in a certain direction, a large amount of high-temperature metal flow is generated, the thermite can be melted through a metal shell, the thermite can be gradually used for destroying shell ammunition, and the thermite has wide application prospect in ammunition destroying.
At present, the research on thermite tends to develop components with nano-sized and diversified component types, for example, nano thermite formulas and methods disclosed in a large number of patents mostly use nano metal powder and metal oxide powder, have more raw material components and higher requirements, cause preparation difficulty and higher cost, and are not beneficial to destruction of ammunition in a battlefield. The currently published thermite for destruction is few, and only the thermite for destruction invented by the university of china army engineering (see CN108794283A) improves the overall fluidity of molten slag and improves the metal-melting efficiency of the composite thermite, but the raw material components of the thermite are complex and comprise various components such as aluminum powder, ferroferric oxide powder, potassium nitrate powder, copper oxide powder, chromium oxide powder, calcium oxide powder and magnesium powder, so that a demand exists in the prior art for a thermite for destruction that is simple and easy to obtain, has a simple preparation process, and is easier to use in battlefield environments.
Disclosure of Invention
The invention aims to provide a thermite for destroying cased ammunition and a preparation method thereof, aiming at the defects and shortcomings of the prior art, wherein the thermite has simple and easily obtained raw material components and simple preparation process, and adopts the following technical scheme:
a thermite for destroying cased ammunition, consisting of: 45-48 percent (weight percentage) of ferric oxide, 13-16 percent (weight percentage) of copper oxide, 18-20 percent (weight percentage) of aluminum and 18-20 percent (weight percentage) of polyethylene glycol. For the sake of simplicity, "% (weight percent)" is abbreviated as "wt%" hereinafter "
The invention also discloses a preparation method of the thermite for destroying the cased ammunition, which comprises the following steps: 1) weighing ferric oxide powder, copper oxide powder, aluminum powder and polyethylene glycol according to the proportion;
2) dissolving the polyethylene glycol weighed in the step 1) into an ethanol solution, and fully stirring and dispersing to obtain a dispersion liquid;
3) adding the ferric oxide powder, the copper oxide powder and the aluminum powder weighed in the step 1) into the dispersion liquid obtained in the step 2) step by step, adding another powder after adding one powder and stirring and dispersing uniformly, adding all the powders, and stirring and dispersing uniformly to obtain a thermite mixed liquid;
4) and placing the obtained thermite mixed solution in a crucible, and drying to obtain a finished thermite product.
Further, the granularity of the ferric oxide powder in the step 1) is 10-40 μm.
Further, the granularity of the copper oxide powder in the step 1) is 5-20 microns.
Further, the granularity of the aluminum powder in the step 1) is 5-20 μm.
Further, the molecular weight of the polyethylene glycol in the step 1) is more than 6000.
Further, in the step 2) and the step 3), a stirring disperser is used for stirring and dispersing.
Optionally, before the step 4), filtering the thermite mixed solution obtained in the step 3), and retaining the filtered thermite mixed solution.
Further, in the step 4), the drying temperature is 70 ℃, and the drying time is more than 12 h.
Further, in the step 4), a drying oven is selected for drying.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the thermite for destroying the ammunition with the shell adopts four raw materials, namely ferric oxide powder, copper oxide powder, aluminum powder and polyethylene glycol, which are daily chemical raw materials, and is simple and easy to obtain, low in specification requirement and low in cost.
2. The high molecular weight polyethylene glycol solid adopted by the invention can improve the combustion condition of the thermite in a thermite system, and can be used as a gas generating agent to reduce the slag adhering phenomenon of the thermite in use and enhance the destruction effect of the thermite.
3. The whole preparation process of the thermite is simple and easy to operate.
4. The produced thermite is convenient to use, less in slag adhering and good in fusion penetration effect, and is more suitable for destroying ammunition in a battlefield environment.
Drawings
Fig. 1 and 2 are photographs showing the test results of a metal plate penetration test of a thermite for destroying cased ammunition prepared according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a thermite for destroying cased ammunition, which consists of the following components: 45-48 wt% of ferric oxide, 13-16 wt% of copper oxide, 18-20 wt% of aluminum and 18-20 wt% of polyethylene glycol.
The invention also provides a preparation method of the thermite for destroying the cased ammunition, which comprises the following steps:
1) weighing ferric oxide powder, copper oxide powder, aluminum powder and polyethylene glycol according to the proportion of 45-48 wt% of ferric oxide, 13-16 wt% of copper oxide, 18-20 wt% of aluminum and 18-20 wt% of polyethylene glycol;
wherein the particle size of the ferric oxide powder is preferably 10-40 μm, the particle size of the copper oxide powder is preferably 5-20 μm, the particle size of the aluminum powder is preferably 5-20 μm, and the molecular weight of the polyethylene glycol is preferably 6000 or more. The thermite only needs four raw materials, belongs to common and easily-obtained production raw materials in chemical production, only needs micron-sized raw materials, and has low specification requirement and low cost.
2) Dissolving the polyethylene glycol weighed in the step 1) into an ethanol solution, and fully stirring and dispersing to obtain a dispersion liquid;
3) adding the ferric oxide powder, the copper oxide powder and the aluminum powder weighed in the step 1) into the dispersion liquid obtained in the step 2) step by step, adding another powder after each powder is added and must be stirred and dispersed uniformly, adding all the powders, stirring and dispersing uniformly to obtain a thermite mixed liquid, or filtering the mixed liquid, and discarding the filtrate to correspondingly shorten the subsequent drying time;
in the steps 2) and 3), in order to stir and disperse uniformly, a stirring disperser can be adopted for stirring and dispersing,
4) and placing the obtained thermite mixed solution in a crucible, and drying to obtain a finished thermite product. The drying temperature is preferably 70 ℃, the drying time is preferably more than 12h, and the drying equipment can be a drying oven.
The whole preparation method only needs the 4 steps, the process is simple, no complex process is needed, the production is easy, the high molecular weight solid polyethylene glycol used in the method can not be evaporated along with a solvent, the combustion condition of the thermite can be improved in a thermite system, the solid polyethylene glycol can be used as a gas generating agent to reduce the slag adhering phenomenon of the thermite in use, and the destruction effect of the thermite is enhanced.
Example 1
1) Weighing 96g of ferric oxide, 26g of copper oxide, 38g of aluminum powder and 40g of polyethylene glycol according to the proportion of 48 wt% of ferric oxide, 13 wt% of copper oxide, 19 wt% of aluminum powder and 20 wt% of polyethylene glycol (PEG 6000);
2) dissolving 40g of weighed polyethylene glycol in sufficient ethanol solution to prepare dispersion liquid;
3) adding 96g of ferric oxide powder into the prepared dispersion liquid, stirring and dispersing for about 30 minutes until the powder is fully dispersed, then adding 26g of copper oxide powder, continuously stirring and dispersing for about 30 minutes until the powder is fully dispersed, finally adding 38g of aluminum powder, stirring and dispersing for about 30 minutes until the powder is fully dispersed, obtaining thermite mixed liquid, and filtering;
4) and collecting the filtered thermite mixed solution in a crucible, placing the crucible in a drying box, and drying for 12 hours at 70 ℃ to obtain a finished thermite.
Example 2
1) Weighing 90g of ferric oxide, 30g of copper oxide, 36g of aluminum powder and 36g of polyethylene glycol according to the proportion of 45 wt% of ferric oxide, 15 wt% of copper oxide, 18 wt% of aluminum powder and 18 wt% of polyethylene glycol (PEG 7000);
2) dissolving the weighed 36g of polyethylene glycol in sufficient ethanol solution to prepare dispersion liquid;
3) adding 90g of ferric oxide powder into the prepared dispersion liquid, stirring and dispersing for about 30 minutes until the powder is fully dispersed, then adding 30g of copper oxide powder, continuously stirring and dispersing for about 30 minutes until the powder is fully dispersed, finally adding 36g of aluminum powder, stirring and dispersing for about 30 minutes until the powder is fully dispersed, obtaining thermite mixed liquid, and filtering;
4) and collecting the filtered thermite mixed solution in a crucible, placing the crucible in a drying box, and drying for 13 hours at 70 ℃ to obtain a finished thermite.
Example 3
1) Weighing 92g of ferric oxide, 32g of copper oxide, 40g of aluminum powder and 38g of polyethylene glycol according to the proportion of 46 wt% of ferric oxide, 16 wt% of copper oxide, 20 wt% of aluminum powder and 19 wt% of polyethylene glycol (PEG 8000);
2) dissolving 38g of the weighed polyethylene glycol in sufficient ethanol solution to prepare dispersion liquid;
3) adding 92g of ferric oxide powder into the prepared dispersion liquid, stirring and dispersing for about 30 minutes until the powder is fully dispersed, then adding 32g of copper oxide, continuously stirring and dispersing for about 30 minutes until the powder is fully dispersed, finally adding 40g of aluminum powder, stirring and dispersing for about 30 minutes until the powder is fully dispersed, obtaining thermite mixed liquid, and filtering;
4) and collecting the filtered thermite mixed solution in a crucible, placing the crucible in a drying box, and drying for 14 hours at 70 ℃ to obtain a finished thermite.
The finished thermite prepared in the steps is put into a combustor to carry out a metal plate fusion penetration test, the test result is shown in figures 1 and 2, the thermite has strong metal puncture, cutting capability and less slag adhering, and is suitable for destroying ammunition made of various shell materials.
In summary, the following steps:
1. the thermite for destroying the ammunition with the shell adopts four raw materials, namely ferric oxide powder, copper oxide powder, aluminum powder and polyethylene glycol, which are daily chemical raw materials, and is simple and easy to obtain, low in specification requirement and low in cost.
2. The high molecular weight polyethylene glycol solid adopted by the invention can improve the combustion condition of the thermite in a thermite system, and can be used as a gas generating agent to reduce the slag adhering phenomenon of the thermite in use and enhance the destruction effect of the thermite.
3. The whole preparation process of the thermite is simple and easy to operate.
4. The produced thermite is convenient to use, less in slag adhering and good in fusion penetration effect, and is more suitable for destroying ammunition in a battlefield environment.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may still modify the technical solutions described in the foregoing embodiments, or may equally substitute some or all of the technical features; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. A thermite for destroying cased ammunition, comprising: 45-48 wt% of ferric oxide, 13-16 wt% of copper oxide, 18-20 wt% of aluminum and 18-20 wt% of polyethylene glycol.
2. A method of preparing the thermite of claim 1 comprising the steps of:
1) weighing ferric oxide powder, copper oxide powder, aluminum powder and polyethylene glycol according to the proportion of claim 1;
2) dissolving the polyethylene glycol weighed in the step 1) into an ethanol solution, and fully stirring and dispersing to obtain a dispersion liquid;
3) adding the ferric oxide powder, the copper oxide powder and the aluminum powder weighed in the step 1) into the dispersion liquid obtained in the step 2) step by step, adding another powder after adding one powder and stirring and dispersing uniformly, adding all the powders, and stirring and dispersing uniformly to obtain a thermite mixed liquid;
4) and placing the obtained thermite mixed solution in a crucible, and drying to obtain a finished thermite product.
3. The method of claim 2, wherein: the granularity of the ferric oxide powder in the step 1) is 10-40 μm.
4. The method of claim 2, wherein: the granularity of the copper oxide powder in the step 1) is 5-20 microns.
5. The method of claim 2, wherein: the granularity of the aluminum powder in the step 1) is 5-20 microns.
6. The method of claim 2, wherein: the molecular weight of the polyethylene glycol in the step 1) is more than 6000.
7. The method of claim 2, wherein: and (3) selecting a stirring disperser to stir and disperse in the step 2) and the step 3).
8. The method of claim 2, wherein: filtering the thermite mixed solution obtained in the step 3) before the step 4), and reserving the filtered thermite mixed solution.
9. The method of claim 2, wherein: in the step 4), the drying temperature is 70 ℃, and the drying time is more than 12 h.
10. The method of claim 2, wherein: and 4) selecting a drying oven for drying in the step 4).
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| CN202011230412.6A CN112299934A (en) | 2020-11-06 | 2020-11-06 | Thermite for destroying cased ammunition and preparation method thereof |
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| CN112851452A (en) * | 2021-03-09 | 2021-05-28 | 河南中南工业有限责任公司 | Pyrotechnic composition for pyrotechnic cutting device and manufacturing method and application thereof |
| CN115745714A (en) * | 2022-12-02 | 2023-03-07 | 南京理工大学 | High-calorific-value thermite with chemical corrosivity and preparation method and application thereof |
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