CN116023197B - Composite energetic particle and preparation method thereof - Google Patents
Composite energetic particle and preparation method thereof Download PDFInfo
- Publication number
- CN116023197B CN116023197B CN202211623697.9A CN202211623697A CN116023197B CN 116023197 B CN116023197 B CN 116023197B CN 202211623697 A CN202211623697 A CN 202211623697A CN 116023197 B CN116023197 B CN 116023197B
- Authority
- CN
- China
- Prior art keywords
- nto
- energetic
- adn
- composite
- microspheres
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002245 particle Substances 0.000 title claims abstract description 47
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000004005 microsphere Substances 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011230 binding agent Substances 0.000 claims abstract description 18
- 239000002360 explosive Substances 0.000 claims abstract description 16
- 238000000227 grinding Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 238000005266 casting Methods 0.000 claims abstract description 9
- 239000011258 core-shell material Substances 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 6
- 230000004927 fusion Effects 0.000 claims abstract description 5
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 8
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 244000043261 Hevea brasiliensis Species 0.000 claims description 2
- 239000005062 Polybutadiene Substances 0.000 claims description 2
- 229920001973 fluoroelastomer Polymers 0.000 claims description 2
- 229920003052 natural elastomer Polymers 0.000 claims description 2
- 229920001194 natural rubber Polymers 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 229920002857 polybutadiene Polymers 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims 2
- 229910052751 metal Inorganic materials 0.000 abstract description 20
- 239000002184 metal Substances 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 14
- 230000007797 corrosion Effects 0.000 abstract description 12
- 238000005260 corrosion Methods 0.000 abstract description 12
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 6
- 239000010935 stainless steel Substances 0.000 abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- 150000002739 metals Chemical class 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 230000006698 induction Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 239000011257 shell material Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000002923 metal particle Substances 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000011246 composite particle Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- NVKJOXRVEKMMHS-UHFFFAOYSA-N 5-nitro-1,2,4-triazol-3-one Chemical compound [O-][N+](=O)C1=NC(=O)N=N1 NVKJOXRVEKMMHS-UHFFFAOYSA-N 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- BRUFJXUJQKYQHA-UHFFFAOYSA-O ammonium dinitramide Chemical compound [NH4+].[O-][N+](=O)[N-][N+]([O-])=O BRUFJXUJQKYQHA-UHFFFAOYSA-O 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- WFPZPJSADLPSON-UHFFFAOYSA-N dinitrogen tetraoxide Chemical compound [O-][N+](=O)[N+]([O-])=O WFPZPJSADLPSON-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000013173 literature analysis Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920005596 polymer binder Polymers 0.000 description 1
- 239000002491 polymer binding agent Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Landscapes
- Manufacturing Of Micro-Capsules (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to the field of energetic materials, and particularly discloses a composite energetic particle and a preparation method thereof, wherein the disclosed composite energetic particle comprises energetic microspheres, ADN and a binder; the energetic microsphere is of a core-shell structure, the inner core of the core-shell structure is NTO, and the outer shell is aluminum powder and carbon powder; ADN is inlaid between the energetic microspheres. The disclosed preparation method comprises (1) mixing and grinding NTO and aluminum powder to prepare aluminized NTO; (2) mixing aluminized NTO and carbon powder to prepare energetic microspheres; (3) And mixing the binder, the ADN and the energetic microspheres to prepare the composite energetic particles. The composite energetic particle of the invention is used for preparing the mixed explosive, and the mixed explosive is prepared by a fusion casting or pouring process. The corrosion of NTO and related substitutes to metals can be reduced, and the NTO and related substitutes can not be severely corroded with copper, stainless steel and aluminum; the invention has the advantage of low sensitivity, and the mechanical sensitivity of the composite energetic particles is lower than 40%.
Description
Technical Field
The invention belongs to the field of energetic materials, and particularly relates to a composite energetic particle and a preparation method thereof.
Technical Field
The charge of explosive is the primary energy source of the weapon system and its performance determines the effectiveness of the weapon system. As a core component of the explosive charge, the energy and safety of the energetic material directly determines the power and safety of the explosive charge and thus the whole weapon system. For this reason, efforts have been made in the industry to study elemental energetic materials that are highly energy insensitive.
3-nitro-1, 2, 4-triazole-5-ketone, also known as 5-nitro-1, 2, 4-triazole-3-ketone or 2, 4-dihydro-5-nitro-3-hydrogen-2, 4-triazole-3-ketone, which is called NTO for short, is a white crystal substance with the density of 1.93g/cm 3 The theoretical detonation velocity is 8 560m/s, is equivalent to that of the black-cord, the vulnerability is superior to that of the black-cord, and the high-energy-density energetic material has wide application prospect. However, the simple substance NTO has stronger acidity and stronger corrosiveness to metal, and the prior art is mainly coated by a polymer binder, so that the contact between the simple substance NTO and a metal material is reduced, and the acid damage of the NTO is reduced.
From literature analysis, NTO is currently only applicable to mixed explosives for casting systems and fusion casting systems, and is not applicable to press-fit systems. Because the mixed explosive of the casting system and the casting system can form a stable coating structure with the NTO in the coating and forming processes, the bare chance of the simple substance NTO is reduced, thus inhibiting the acidity of the NTO and avoiding the harm caused by the acidity. For the mixed explosive of the press-fit system, the vacuum stability test result shows that the coated NTO-based explosive is compatible with metal, and the main reason that the acidity is inhibited is that the high polymer coating of NTO in the vacuum stability test sample is not damaged. When the pressed explosive is charged, the explosive modeling powder needs to be pressed and molded under higher pressure, and the polymer coating material and NTO can deform and separate, so that NTO crystals are exposed, and the acid hazard of NTO is improved.
The above described casting, fusion casting and press fitting systems do not solve the problem of the effect of the NTO itself on the metal, simply by reducing the contact through physical isolation, and once the energetic material is exposed, the risk increases dramatically.
Disclosure of Invention
The main ammonium nitrate energetic materials RDX, HMX and the like widely used at present are acidic, and the corrosion to metals is shown to be slight. The difference between NTO and RDX is analyzed, and the effect of RDX and metal is only a surface interface effect, and the corrosion effect of RDX particles on the surface layer and the contact surface of the metal consumes a trace amount of RDX, so that the formed metal oxide inhibits the contact between RDX and the metal, and therefore, the corrosion is less. The nitro and carbonyl in NTO molecular structure has stronger electron-withdrawing effect, so that electron cloud density on nitrogen atom groups on 1 and 4 positions is reduced, hydrogen is distributed in a metastable state, hydrogen particles are separated out after NTO contacts with metal, due to the induction effect of electrons, adjacent NTO continues to separate out hydrogen ions, and corrosion action continuously occurs.
Based on the above, the concept of the invention is to change the prior thought of physical barrier reduction contact, and mainly reduce the induction effect of NTO molecules. Based on the conception, the invention designs a structure in a way that the NTO only has oxidation reaction with the metal surface like RDX, so that the composite material or the mixed explosive containing the NTO can not continuously corrode the metal. Unlike common practice in industry, the concept is not to completely coat NTO, nor to eliminate the acidity of NTO, but to allow NTO to be exposed, but to reduce corrosion to metal under acidic conditions, reduce induction of NTO molecules, and the thickness of the common coating film in industry is insufficient, while increasing the thickness of the coating film necessarily increases the content of inert substances, and reduces the energy of the system; in order to achieve the purpose of reducing the induction of NTO molecules and not reducing the energy of a system, the invention aims to select a metal particle which can participate in the explosion reaction of an energetic material to perform physical blocking and reduce the induction of NTO molecules. The activity of the selected metal particles cannot be lower than that of the shell material, the metal particles can form a micro battery through self oxidation, the metal shell in contact with NTO is protected, and the purpose of reducing metal corrosion caused by NTO is achieved.
The design idea of the invention is as follows: the invention designs a composite energetic particle, which comprises energetic microspheres, ammonium dinitramide (code ADN) and a binder; the energy-containing microsphere is a core-shell structure composite material, the inner core is NTO, the outer shell is aluminum powder and carbon powder with granularity smaller than NTO, physical separation is carried out by the aluminum powder and the carbon powder, induction of NTO molecules is reduced, conductivity of a system can be improved by the carbon powder, when the NTO corrodes metal, the aluminum powder and the metal form an in-situ micro-cell, and the metal of a contact surface is protected by sacrificing local aluminum powder; a small amount of AND is inlaid between the energetic microspheres, ADN is an amine salt type high-energy compound, the heat stability AND the chemical stability of the amine salt type high-energy compound are good, the ADN has remarkable characteristics of hygroscopicity, hydrolysis AND alkalinity can occur after moisture in air is absorbed, but the water locking capacity after the hydrolysis is strong, AND the amine salt type high-energy compound can be regarded as an energetic drying agent; the binder is used for coating the energetic microspheres and ADN, and preventing hydrolysis, oxidation and the like of the energetic components while realizing formability and sense reduction.
Based on the principle, the invention provides a preparation method of the composite energetic particle.
For this purpose, the preparation method provided comprises:
(1) Mixing and grinding NTO and aluminum powder to prepare aluminized NTO;
(2) Mixing aluminized NTO and carbon powder to prepare energetic microspheres;
(3) Mixing a binder, ADN and energetic microspheres to prepare composite energetic particles; the binder is selected from one or more than two of paraffin, ethylene-vinyl acetate copolymer, fluororubber, butadiene rubber and natural rubber.
The method comprises the following steps of: 100 parts of NTO, 10-30 parts of aluminum powder, 0.1-0.3 part of carbon powder, 0.5-1 part of ADN and 4-7 parts of adhesive.
Alternatively, the particle size of the NTO is 50-800 microns, AND the average particle size of the AND is 13 microns; the grain diameter of the aluminum powder is 200-5000 nanometers; the particle size of the carbon powder is smaller than 100 nanometers.
Alternatively, the NTO infiltrated by absolute ethyl alcohol is mixed with aluminum powder and ground, and the slurry obtained after grinding is dried to obtain aluminized NTO.
Alternatively, the mixed grinding adopts polytetrafluoroethylene grinding balls for grinding.
Specifically, the organic solution of the binder, the ADN and the energetic microspheres are mixed, and the mixture is dried to prepare the composite energetic particles.
In other embodiments, the ADN is replaced with an amine salt compound that is hygroscopic and alkaline after moisture absorption.
The composite energetic particle of the present invention comprises, in microstructure, an energetic microsphere, ADN, and a binder; the energetic microsphere is of a core-shell structure, the inner core of the core-shell structure is NTO, and the outer shell is aluminum powder and carbon powder; ADN is inlaid between the energetic microspheres.
The composite energetic particle of the invention is used for preparing the mixed explosive, and the mixed explosive is prepared by a fusion casting or pouring process. The corrosion of NTO and related substitutes to metals can be reduced, and the NTO and related substitutes can not be severely corroded with copper, stainless steel and aluminum; the invention has the advantage of low sensitivity, and the mechanical sensitivity of the composite energetic particles is lower than 40%.
Drawings
FIG. 1 is a schematic diagram of the structure of a composite energetic particle according to the present invention; in the figure, 1-energetic microsphere, 2-ADN, 3-binder, 4-NTO, 5-aluminum powder and 6-carbon powder.
FIG. 2 is a Scanning Electron Microscope (SEM) of the particles of example 1 after blending and coating.
FIG. 3 is a stress curve of the pressing process of example 1 of the present invention.
FIG. 4 is a photograph of stainless steel after corrosion of the tablet of example 2 of the present invention.
Detailed Description
Unless specifically stated otherwise, the terms herein are to be understood based on knowledge of one of ordinary skill in the relevant art.
The present invention will be described in further detail with reference to specific examples. It should be noted that the following examples are some preferred examples of the present invention, and are not limited to the present invention, and those skilled in the art may perform optimization selection on the specific reactants, the mixture ratio of materials, the sequence of adding materials, the mixing means and device, the mixing duration, the drying temperature, etc. involved in the method of the present invention based on the preparation scheme of the present invention, so as to achieve the relevant effects of the present invention.
Example 1:
the preparation method comprises the following raw materials in mass unit: 100 parts of NTO, 30 parts of aluminum powder, 0.1 part of carbon powder, 0.5 part of ADN and 7 parts of binder. Wherein, the NTO grain diameter is 100-800 microns, and the average ADN grain size is 13 microns; the aluminum powder is spherical particles with the particle size of 5 micrometers (5000 nanometers); the particle size of the carbon powder is smaller than 100 nanometers. The binder is ethylene-vinyl acetate copolymer;
the preparation method comprises the following steps:
(1) Pouring polytetrafluoroethylene grinding balls with the particle size of 12 mm into a grinding cavity; adding absolute ethyl alcohol into NTO for soaking, and adding 10 milliliters of absolute ethyl alcohol into every 100 grams of NTO; pouring the infiltrated NTO and aluminum powder into a grinding cavity; grinding for 15 minutes, wherein the stirring speed is 5 revolutions per minute, and the ground slurry is discharged through a discharge hole of a grinding cavity, filtered and dried to obtain aluminized NTO;
(2) Adding aluminized NTO particles and carbon powder into a paddle-free mixer, mixing for 5 minutes at a rotating speed of 10 revolutions per minute to obtain energetic microspheres;
(3) Adding ethylene-vinyl acetate copolymer into petroleum ether, heating to 60 ℃ and stirring until the ethylene-vinyl acetate copolymer is completely dissolved, adding energetic microspheres and ADN, continuously stirring and volatilizing petroleum ether until the materials become a slurry, sieving, ventilating and drying to obtain the composite energetic particles.
Example 2:
the preparation method comprises the following raw materials in mass unit: 100 parts of NTO, 10 parts of aluminum powder, 0.3 part of carbon powder, 1 part of ADN and 4 parts of binder, wherein the NTO has a particle size of 50-200 microns, and the average particle size of the ADN is 13 microns; the aluminum powder is spherical particles with the particle size of 200 nanometers; the particle size of the carbon powder is smaller than 100 nanometers; the binder used was ethylene-vinyl acetate copolymer. The preparation method of this example is the same as that of example 1.
Comparative example:
the comparative example is different from example 1 in the preparation method, specifically, an ethylene-vinyl acetate copolymer is added into petroleum ether, heated to 60 ℃ and stirred until the ethylene-vinyl acetate copolymer is completely dissolved, NTO, aluminum powder, carbon powder and ADN are added, and stirring and volatilizing petroleum ether are continued until the materials become a sand slurry, sieving and ventilated drying are carried out, thus obtaining the preparation of the comparative example.
The materials prepared in examples 1 and 2 and comparative example were further subjected to performance evaluation:
(1) SEM, the composite energetic particles of example 1 were subjected to scanning electron microscopy analysis, and as shown in FIG. 2, aluminum powder with a particle size of 5 μm was embedded on the NTO surface, and the structure was complete.
(2) Moldability: 20 g of the composite energetic particle prepared in example 1 is placed into a die with the diameter of 20 mm, and is pressed to form a stress-strain curve in the pressing process, as shown in fig. 3.
(3) Metal corrosiveness: referring to method 504.1 of national army standard GJB772A-97, the composite energetic particles prepared in example 1 and example 2 and the composite energetic particles prepared in example 1 and example 2 are pressed into the composite energetic particlesThe corrosion test was performed with stainless steel, 2a12 and beryllium bronze, respectively, and the test results are shown in table 1, wherein the corrosion results of the tablet of example 2 on stainless steel are shown in fig. 4.
(5) Sensitivity tests were performed on the molding powders obtained in example 1 and example 2, and the results are shown in table 1.
Table 1 composite particle test data
From Table 1 and the implementation effects, the tablet after compression molding can reduce the corrosiveness of NTO to metal and does not generate serious corrosion with copper, stainless steel and aluminum; the invention has the advantages of good safety and low sensitivity, and the mechanical sensitivity of the composite particles is lower than 40%.
Claims (6)
1. A method for preparing composite energetic particles, which is characterized in that the composite energetic particles comprise energetic microspheres (1), ADN (2) and a binder (3);
the energetic microsphere is of a core-shell structure, the inner core of the core-shell structure is NTO (4), and the outer shell is aluminum powder (5) and carbon powder (6); ADN (2) is embedded between the energy-containing microspheres;
the preparation method comprises the following steps:
(1) Mixing and grinding NTO and aluminum powder to prepare aluminized NTO;
(2) Mixing aluminized NTO and carbon powder to prepare energetic microspheres;
(3) Mixing a binder, ADN and energetic microspheres to prepare composite energetic particles; the binder is selected from one or more than two of paraffin, ethylene-vinyl acetate copolymer, fluororubber, butadiene rubber and natural rubber;
the weight portions are as follows: 100 parts of NTO, 10-30 parts of aluminum powder, 0.1-0.3 part of carbon powder, 0.5-1 part of ADN and 4-7 parts of binder;
the particle size of the NTO is 50-800 microns, and the average particle size of the ADN is 13 microns; the grain diameter of the aluminum powder is 200-5000 nanometers; the particle size of the carbon powder is smaller than 100 nanometers.
2. The method for preparing composite energetic particles according to claim 1, wherein the NTO infiltrated by absolute ethyl alcohol is mixed with aluminum powder and ground, and the slurry obtained after grinding is dried to obtain aluminized NTO.
3. The method of claim 1, wherein the mixed milling is performed using polytetrafluoroethylene milling balls.
4. The method of producing composite energetic particles according to claim 1, wherein the organic solution of the binder, ADN and the energetic microspheres are mixed, and the mixture is dried to produce the composite energetic particles.
5. Use of the composite energetic particles prepared by the preparation method of claim 1 for preparing a mixed explosive.
6. The use according to claim 5 wherein the blended explosive is prepared by a fusion casting or pouring process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211623697.9A CN116023197B (en) | 2022-12-16 | 2022-12-16 | Composite energetic particle and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211623697.9A CN116023197B (en) | 2022-12-16 | 2022-12-16 | Composite energetic particle and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116023197A CN116023197A (en) | 2023-04-28 |
| CN116023197B true CN116023197B (en) | 2024-01-02 |
Family
ID=86080541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211623697.9A Active CN116023197B (en) | 2022-12-16 | 2022-12-16 | Composite energetic particle and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116023197B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529649A (en) * | 1993-02-03 | 1996-06-25 | Thiokol Corporation | Insensitive high performance explosive compositions |
| CN110343021A (en) * | 2019-08-01 | 2019-10-18 | 北京理工大学 | A kind of preparation method of high-energy insensitive explosive base activity energetic material |
| CN113698266A (en) * | 2021-09-09 | 2021-11-26 | 北京理工大学 | Acidic inhibition type NTO-based mixed explosive molding powder and preparation method thereof |
| CN113916066A (en) * | 2021-09-26 | 2022-01-11 | 北京理工大学 | Metal corrosion resistant insensitive ammunition and preparation method thereof |
| CN114956922A (en) * | 2022-07-13 | 2022-08-30 | 南京理工大学 | Preparation method of low-sensitivity core-shell structure micro-nano explosive composite material |
-
2022
- 2022-12-16 CN CN202211623697.9A patent/CN116023197B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529649A (en) * | 1993-02-03 | 1996-06-25 | Thiokol Corporation | Insensitive high performance explosive compositions |
| CN110343021A (en) * | 2019-08-01 | 2019-10-18 | 北京理工大学 | A kind of preparation method of high-energy insensitive explosive base activity energetic material |
| CN113698266A (en) * | 2021-09-09 | 2021-11-26 | 北京理工大学 | Acidic inhibition type NTO-based mixed explosive molding powder and preparation method thereof |
| CN113916066A (en) * | 2021-09-26 | 2022-01-11 | 北京理工大学 | Metal corrosion resistant insensitive ammunition and preparation method thereof |
| CN114956922A (en) * | 2022-07-13 | 2022-08-30 | 南京理工大学 | Preparation method of low-sensitivity core-shell structure micro-nano explosive composite material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116023197A (en) | 2023-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ma et al. | Effect of Fe2O3 in Fe2O3/AP composite particles on thermal decomposition of AP and on burning rate of the composite propellant | |
| Pang et al. | Application of Amorphous Boron Granulated With Hydroxyl‐Terminated Polybutadiene in Fuel‐Rich Solid Propellant | |
| CN102153426B (en) | Coating method for in-situ generating energy-containing deterrent ANPZ on surface of 1,3,5-trinitro-1,3,5-triaza-cyclohexane (RDX) | |
| CN103980073B (en) | A kind of preparation method of containing hydrogenated cerium high heat explosive | |
| CN110204403B (en) | Low-sensitivity high-strength HMX-based composite material and preparation method thereof | |
| CN110526793B (en) | High-energy-density explosive compound and preparation method thereof | |
| CN1851961A (en) | Active-carbon-microball coated metal composition negative polar material and preparing method | |
| CN101544525A (en) | Energetic film composite type gunpowder and explosive, and preparation method thereof | |
| CN106854124A (en) | A kind of boron-based fuel-rich processing method of boron powder | |
| CN116023197B (en) | Composite energetic particle and preparation method thereof | |
| Yang et al. | Efficient sensitivity reducing and hygroscopicity preventing of ultra‐fine ammonium perchlorate for high burning‐rate propellants | |
| CN112592246B (en) | Insensitive explosive | |
| CN104725167A (en) | Preparation method of pressed aluminum-containing explosive | |
| CN114262249A (en) | Composite explosive particles and preparation method thereof | |
| CN103007947A (en) | Cu2O-PbO/graphene oxide composite powder and preparation method thereof | |
| CN112457145B (en) | Metal accelerated explosive and preparation method thereof | |
| CN110937963B (en) | Low-detonation-velocity mixed explosive and preparation method thereof | |
| Marothiya et al. | Effects on burn rates of pellets and propellants with catalyst-embedded AP | |
| CN111302876A (en) | Aluminum-containing explosive and preparation method thereof | |
| CN110845285A (en) | Method for reducing hygroscopicity of ammonium perchlorate | |
| CN115650812A (en) | Coordination ion type high-energy aluminum powder, preparation method and application thereof | |
| CN114309593A (en) | Preparation method of multi-transition metal coated micron aluminum composite fuel | |
| CN111138236B (en) | 1,2, 4-triazole nitrate coated boron-magnesium composite metal powder fuel and preparation method thereof | |
| CN108976095B (en) | C L-20 base pressure-loaded high-energy insensitive explosive and preparation method thereof | |
| CN115784818A (en) | Preparation method of high-molecular fluorine-rich oxidant-based aluminothermic high-explosive-heat industrial explosive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |