LU503579B1 - 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel and preparation method therefor - Google Patents
1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel and preparation method therefor Download PDFInfo
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- LU503579B1 LU503579B1 LU503579A LU503579A LU503579B1 LU 503579 B1 LU503579 B1 LU 503579B1 LU 503579 A LU503579 A LU 503579A LU 503579 A LU503579 A LU 503579A LU 503579 B1 LU503579 B1 LU 503579B1
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- Prior art keywords
- boron
- metal powder
- composite metal
- magnesium composite
- fuel
- Prior art date
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 79
- 239000002184 metal Substances 0.000 title claims abstract description 79
- QYHKLBKLFBZGAI-UHFFFAOYSA-N boron magnesium Chemical compound [B].[Mg] QYHKLBKLFBZGAI-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000002131 composite material Substances 0.000 title claims abstract description 78
- 239000000843 powder Substances 0.000 title claims abstract description 78
- 239000000446 fuel Substances 0.000 title claims abstract description 68
- ZFVNPQBTVHWDOK-UHFFFAOYSA-N nitric acid;1h-1,2,4-triazole Chemical compound O[N+]([O-])=O.C=1N=CNN=1 ZFVNPQBTVHWDOK-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000012216 screening Methods 0.000 claims abstract description 5
- 238000001291 vacuum drying Methods 0.000 claims abstract description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 45
- 239000002245 particle Substances 0.000 claims description 22
- -1 salt 1,2,4-triazole nitrate Chemical class 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 19
- 229910052796 boron Inorganic materials 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 13
- 239000002002 slurry Substances 0.000 claims description 12
- 239000000725 suspension Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- NSPMIYGKQJPBQR-UHFFFAOYSA-N 4H-1,2,4-triazole Chemical compound C=1N=CNN=1 NSPMIYGKQJPBQR-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- SNTWKPAKVQFCCF-UHFFFAOYSA-N 2,3-dihydro-1h-triazole Chemical compound N1NC=CN1 SNTWKPAKVQFCCF-UHFFFAOYSA-N 0.000 claims description 3
- 229910002651 NO3 Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000011258 core-shell material Substances 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 22
- 239000003380 propellant Substances 0.000 abstract description 12
- 238000012360 testing method Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000009472 formulation Methods 0.000 description 7
- 239000011777 magnesium Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- 239000004449 solid propellant Substances 0.000 description 3
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 description 2
- 229920002121 Hydroxyl-terminated polybutadiene Polymers 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052810 boron oxide Inorganic materials 0.000 description 2
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 2
- WFPZPJSADLPSON-UHFFFAOYSA-N dinitrogen tetraoxide Chemical compound [O-][N+](=O)[N+]([O-])=O WFPZPJSADLPSON-UHFFFAOYSA-N 0.000 description 2
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- KSCKTBJJRVPGKM-UHFFFAOYSA-N octan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCCCCCC[O-].CCCCCCCC[O-].CCCCCCCC[O-].CCCCCCCC[O-] KSCKTBJJRVPGKM-UHFFFAOYSA-N 0.000 description 2
- 235000010333 potassium nitrate Nutrition 0.000 description 2
- 239000004323 potassium nitrate Substances 0.000 description 2
- 229910001487 potassium perchlorate Inorganic materials 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/16—Metallic particles coated with a non-metal
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
- C06B45/18—Compositions or products which are defined by structure or arrangement of component of product comprising a coated component
- C06B45/30—Compositions or products which are defined by structure or arrangement of component of product comprising a coated component the component base containing an inorganic explosive or an inorganic thermic component
- C06B45/32—Compositions or products which are defined by structure or arrangement of component of product comprising a coated component the component base containing an inorganic explosive or an inorganic thermic component the coating containing an organic compound
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
Disclosed is a 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel and a preparation method therefor. The fuel of the present invention comprises the following components in part by weight: 70-80 parts of boron-magnesium composite metal powder; 20-30 parts of 1,2,4-triazole nitrate; and 0.5-1 part of silane coupling agent. The present invention also discloses a preparation method for the 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel, comprising the steps of measuring raw materials, preparing raw material solution, adding boron-magnesium composite metal powder, vacuum drying and screening. The fuel of the present invention, when added to a boracic fuel-rich propellant or ignition charge, can reduce the ignition temperature and improve the combustion efficiency, and can give full play to the characteristics of high heat of boron powder.
Description
1,2,4-TRIAZOLE NITRATE-COATED BORON-MAGNESIUM COMPOSITE METAL POWDER
FUEL AND PREPARATION METHOD THEREFOR 0503579
The present invention belongs to the technical field of high-energy fuels of solid propellants and ignition charges, and particularly relates to a 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel and a preparation method therefor.
Among all kinds of metal fuels which can be used in the field of solid propellants and explosives, boron-magnesium composite metal powder has many advantages such as high mass calorific value, high volumetric calorific value, no toxicity, non-toxic combustion products and abundant resources, and has become a research hotspot in the field of boracic fuel-rich propellants and explosives. In the field of solid propellants and explosives, density specific impulse can be improved by adding boron-magnesium composite metal powder in large amounts.
Although the theoretical calorific value of the boron-magnesium composite metal powder is high, the actually tested calorific value is very low. The reasons are that: (1) An oxide layer of B:O3 is present on the surface of the boron powder in the boron-magnesium composite metal powder. The melting point of the boron powder is very high (2500 K), but the melting point of the oxide B2Os is low (723 K), so the boron-magnesium composite metal powder cannot be ignited within a wide range of temperature, and only particle preheating can be achieved. Boron ions can only be ignited to burn when the temperature is very high, and B:O+ evaporation will occur in a combustion process, which makes the continuous combustion of the boron ions more difficult. The melting points and boiling points of boron particles and boron oxide are shown in the table below: (2) A large amount of oxygen is consumed and a lot of residue is produced during boron combustion, and the characteristics of high heat of the boron powder cannot be played.
Therefore, the problem to be solved in the prior art is how to improve the ignition properties and combustion properties of a boron-magnesium composite metal fuel, so as to make the boron- magnesium composite metal powder more widely used.
The purpose of the present invention is to make up for the deficiencies of the prior art, and provide a 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel and a preparation method therefor. The fuel of the present invention has a high heat discharge and a high combustion efficiency; when added to a boracic fuel-rich propellant or boracic ignition charge, the fuel of the present invention can reduce the ignition temperature and improve the combustion efficiency, and can give full play to the characteristics of high heat of boron powder.
To achieve the above purpose, the present invention adopts the following technical solution, 503579
A 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel, comprising the following components in part by weight: 70-80 parts of boron-magnesium composite metal powder; 20-30 parts of 1,2,4-triazole nitrate; and 0.5-1 part of silane coupling agent.
The 1,2,4-triazole nitrate of the present invention is an energetic ionic salt. Energetic ionic salts are a kind of unique energetic materials with a high nitrogen content, and the energy thereof is from a very high positive enthalpy of formation. The reason why the energetic ionic salts have a high enthalpy of formation is that such materials contain a large number of N-N and C-N bonds, and have a high density and a high oxygen balance. The decomposition products of the energetic ionic salts (except perchlorate) contain more dinitrogen tetroxide and are therefore more environmentally friendly, and the energetic ionic salts have a low vapor pressure and a high density. Especially, the characteristics of high oxygen balance is conducive to the combustion of boron particles.
Preferably, the boron-magnesium composite metal powder has a core shell structure, boron powder is used as a core, BzO3 is used as a shell, and the mass percentage of boron in the boron- magnesium composite metal powder is 93%-98%; and more preferably, the mass percentage of boron is 95%.
Preferably, the particle diameter of the boron-magnesium composite metal powder is 4-6 um; and more preferably, the particle diameter is 4.5 um.
Preferably, the fuel comprises the following components in part by weight: 78 parts of boron-magnesium composite metal powder, 21.2 parts of 1,2,4-triazole nitrate; and 0.8 part of silane coupling agent.
Preferably, a preparation process of the 1,2,4-triazole nitrate is that: 1,2,4-triazole is added into a flask in a nitrogen-filled drying oven, an appropriate amount of absolute methanol is added under nitrogen flow and stirring condition, and then concentrated nitric acid is added carefully; the mass ratio of the concentrated nitric acid to the 1,2,4-triazole added is 1.2-1.4:1; reaction is conducted at room temperature, and the obtained liquid is dried after reaction, thus a white crystalline product, i.e., the 1,2,4-triazole nitrate, is obtained.
Preferably, the purity of the 1,2,4-triazole nitrate is 95%-100%; and more preferably, the purity is 100%.
Preferably, the silane coupling agent is KH560.
The present invention also provides a preparation method for the 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel, comprising the following steps: (1) Preparing raw material solution:
dissolving the 1,2,4-triazole nitrate in the methanol at a ratio of 1 g:50 ml, adding the silane 03579 coupling agent KH560 into the mixed solution, and stirring evenly for use; (2) Adding boron-magnesium composite metal powder: adding the boron-magnesium composite metal powder into the methanol solution of the silane coupling agent KH560 and the 1,2,4- triazole nitrate at room temperature under stirring condition, stirring fully, and dispersing evenly to form a mixed suspension; (3) Vacuum drying: vacuumizing the mixed suspension at 45°C in a four-necked flask under stirring condition until a semi-slurry product with a dry surface is obtained, and then transferring the semi-slurry product to a vacuum oven for drying at 50°C ; (4) Screening: screening the 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel, classifying the fuel to form the energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel with different particle diameters, and keeping the fuel in vacuum for use.
The present invention has the following technical characteristics: 1) The present invention adopts the energetic ionic salt 1,2,4-triazole nitrate, which can greatly improve the actual combustion efficiency of the boron-magnesium composite metal powder. 2) The present invention, when applied in a boracic fuel-rich propellant, has the function of increasing combustion heat discharge and burning rate. 3) The present invention, when applied in a boracic ignition charge, has the function of increasing combustion temperature, heat discharge and burning rate.
To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and fully described below. Apparently, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those ordinary skilled in the art without contributing creative labor will belong to the protection scope of the present invention.
Unless otherwise defined, all technical or scientific terms used herein have the ordinary meanings generally understood by those skilled in the field to which the present invention belongs.
A preparation process of the 1,2,4-triazole nitrate is that: 1.0458 g/15.1 mmol of 1,2 4-triazole is added into a Schlenk flask in a nitrogen-filled drying oven, 13 ml of absolute methanol is added under nitrogen flow and stirring condition, and then 1.3925 g/15.2 mmol of concentrated nitric acid is added carefully; reaction is conducted at room temperature for 1 h, and the obtained liquid is transferred to a vacuum drying oven and dried at room temperature for 24 h after reaction, thus a white crystalline product, i.e., the 1,2,4-triazole nitrate, is prepared.
In order to test the application properties of the energetic ionic salt 1,2,4-triazole nitrate. 503579 coated boron-magnesium composite metal powder fuel of this patent, firstly, the physicochemical properties of the fuel are characterized; and secondly, particles of the fuel are added into a boracic fuel-rich propellant and a boracic ignition charge to prepare grains and test the combustion properties thereof.
The formulations of the boracic fuel-rich propellant used for testing properties are: 28% of ammonium perchlorate, 43% of modified boron-magnesium composite metal powder, 2% of potassium perchlorate, 17% of hydroxy-terminated polybutadiene, 1% of toluene diisocyanate, 4% of diethyl sebacate, and 5% of magnesium powder; the preparation process is that: firstly, the hydroxy-terminated polybutadiene and the diethyl sebacate are mixed, stirred evenly, placed in a kneading machine, added with the ammonium perchlorate and the potassium perchlorate, and kneaded evenly; the modified boron-magnesium composite metal powder and the magnesium powder are added and mixed evenly; then the toluene diisocyanate is added and mixed evenly; and the product is discharged and cured at 55 °C for 7 days.
The formulations of the boracic ignition charge used for testing properties are: 45% of potassium nitrate, 50% of modified boron-magnesium composite metal powder, and 5% of phenolic resin; the preparation process is that: firstly, the modified boron-magnesium composite metal powder and the potassium nitrate are mixed manually; secondly, the phenolic resin is mixed with absolute ethyl alcohol at a ratio of 1 g:1 ml and prepared into a solution; then the phenolic resin solution is added into the powder mixture and stirred evenly, and the mixture is granulated into 40-mesh particles and dried naturally; finally, the granulated mixture is placed in a mold and pressed into grains by an oil hydraulic press.
The test instruments and test methods for testing the physicochemical properties and the grain combustion properties of the modified boron-magnesium composite metal powder fuel are shown in Table 1.
Table 1 Property test items and test methods LU503579 © Meftingpoint("C) Bolling point °C)
Boron particle 2074 2550
Boron oxide 460 1860
UP fees ee microscope
Material microscope al properties meter ey [oor mme spectrometer
Combustion IMPAC IGA 140 infrared radiation properties or [os 5
Embodiment 1
Taking a target product mass of 100 g as an example, the amounts and types of various raw materials required are: 78 g of boron-magnesium composite metal powder (with a particle diameter of 4.5 um and a boron content of 93%), 21.2 g of 1,2,4-triazole nitrate (with a purity of 99%), 0.8 g of silane coupling agent KH560, and 1060 ml of methanol. The defined amounts of 1,2,4-triazole nitrate and KH560 are weighed accurately and dissolved in the methanol; the boron- magnesium composite metal powder is added into the above solution at room temperature under stirring condition, stirred fully and dispersed evenly to form a mixed suspension; and the mixed suspension is vacuumized at 45°C in a four-necked flask under stirring condition until a semi- slurry product with a dry surface is obtained. The semi-slurry product is transferred to a vacuum oven for drying at 50°C until the boron-magnesium composite metal powder is relatively dry. The above boron-magnesium composite metal powder is screened and classified to form the energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel with different particle diameters, and the fuel is kept in vacuum for use. The obtained product is the energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel of this patent, test grains of the boracic fuel-rich propellant and ignition charge are prepared from the prepared energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite 03579 metal powder fuel according to the above-mentioned formulations and processes.
Embodiment 2
Taking a target product mass of 100 g as an example, the amounts and types of various raw materials required are: 78 g of boron-magnesium composite metal powder (with a particle diameter of 4.5 um and a boron content of 95%), 21.2 g of 1,2,4-triazole nitrate (with a purity of 99%), 0.8 g of silane coupling agent KH560, and 1060 ml of methanol. The defined amounts of 1,2,4-triazole nitrate and KH560 are weighed accurately and dissolved in the methanol; the boron- magnesium composite metal powder is added into the above solution at room temperature under stirring condition, stirred fully and dispersed evenly to form a mixed suspension; and the mixed suspension is vacuumized at 45°C in a four-necked flask under stirring condition until a semi- slurry product with a dry surface is obtained. The semi-slurry product is transferred to a vacuum oven for drying at 50°C until the boron-magnesium composite metal powder is relatively dry. The above boron-magnesium composite metal powder is screened and classified to form the energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel with different particle diameters, and the fuel is kept in vacuum for use. The obtained product is the energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel of this patent, test grains of the boracic fuel-rich propellant and ignition charge are prepared from the prepared energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel according to the above-mentioned formulations and processes.
Embodiment 3
Taking a target product mass of 100 g as an example, the amounts and types of various raw materials required are: 78 g of boron-magnesium composite metal powder (with a particle diameter of 4.5 um and a boron content of 98%), 21.2 g of 1,2,4-triazole nitrate (with a purity of 99%), 0.8 g of silane coupling agent KH560, and 1060 ml of methanol. The defined amounts of 1,2,4-triazole nitrate and KH560 are weighed accurately and dissolved in the methanol; the boron- magnesium composite metal powder is added into the above solution at room temperature under stirring condition, stirred fully and dispersed evenly to form a mixed suspension; and the mixed suspension is vacuumized at 45°C in a four-necked flask under stirring condition until a semi- slurry product with a dry surface is obtained. The semi-slurry product is transferred to a vacuum oven for drying at 50°C until the boron-magnesium composite metal powder is relatively dry. The above boron-magnesium composite metal powder is screened and classified to form the energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel with different particle diameters, and the fuel is kept in vacuum for use. The obtained product is the energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel of this patent, test grains of the boracic fuel-rich propellant and ignition charge are prepared from the prepared energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite 03579 metal powder fuel according to the above-mentioned formulations and processes.
Embodiment 4
Taking a target product mass of 100 g as an example, the amounts and types of various raw materials required are: 75 g of boron-magnesium composite metal powder (with a particle diameter of 4.5 um and a boron content of 95%), 24.2 g of 1,2,4-triazole nitrate (with a purity of 99%), 0.8 g of silane coupling agent KH560, and 1060 ml of methanol. The defined amounts of 1,2,4-triazole nitrate and KH560 are weighed accurately and dissolved in the methanol; the boron- magnesium composite metal powder is added into the above solution at room temperature under stirring condition, stirred fully and dispersed evenly to form a mixed suspension; and the mixed suspension is vacuumized at 45°C in a four-necked flask under stirring condition until a semi- slurry product with a dry surface is obtained. The semi-slurry product is transferred to a vacuum oven for drying at 50°C until the boron-magnesium composite metal powder is relatively dry. The above boron-magnesium composite metal powder is screened and classified to form the energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel with different particle diameters, and the fuel is kept in vacuum for use. The obtained product is the energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel of this patent, test grains of the boracic fuel-rich propellant and ignition charge are prepared from the prepared energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel according to the above-mentioned formulations and processes.
The physicochemical properties and the grain combustion properties of the energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel prepared in embodiment 1-4 are tested by the instruments and methods shown in Table 2, and the results of the tested properties are shown in Table 2.
Reference example 1
In this reference example, the boron-magnesium composite metal powder (with a particle diameter of 4.5 um and a boron content of 95%) in the above embodiments is used to compare the energetic ionic salt 1,2,4-triazole nitrate-coated modified boron-magnesium composite metal powder fuel, and test grains of the boracic fuel-rich propellant and ignition charge are prepared according to the above-mentioned formulations and processes. The physicochemical properties and the grain combustion properties of the boron-magnesium composite metal powder in reference example 1 are tested by the instruments and methods shown in Table 2, and the results of the tested properties are shown in Table 2.
Table 2 Physicochemical properties and combustion properties of 1,2,4-triazole LU503579 nitrate-coated boron-magnesium composite metal powder fuel and grains
Embodi- | Embodi- | Embodi- | Embodi- Reference
EEE
Surface coating 99% 100% 100% 99% a LE
Average particle) 4.52 4.49 4.50 4.52 diameter =
Elemental B:72.54 B:74.1 B:76.44 B:74.1 B:95 composition/% | Mg:5.46 | Mg:3.90 | Mg: 1.56 | Mg:3.90 Mg:5 es
Combustion 51.55 53.63 51.25 52.23 48.32 heat discharge
Mare Ill
Propellant | 1 MPa burning 3.67 4.59 3.90 4.25 2.45 pan ame | | I I
Combustion 22.20 24.05 21.95 23.88 21.38 heat discharge a
Ignition Combustion grain Combustion 53.25 55.78 53.45 54.21 48.56 heat discharge
Mari
Burning rate 7.54 8.46 7.95 7.80 7.02
Ce LOL LE LEE
The illustration of the above embodiments is merely used for helping to understand the method and the core thought of the present invention. It should be noted that for those ordinary skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications shall also fall into the protection scope of claims of the present invention.
Claims (10)
1. A 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel, comprising the following components in part by weight: 70-80 parts of boron-magnesium composite metal powder; 20-30 parts of 1,2,4-triazole nitrate; and
0.5-1 part of silane coupling agent.
2. The fuel according to claim 1, wherein — the boron-magnesium composite metal powder has a core shell structure, — boron powder is used as a core, — B20; is used as a shell, and — the mass percentage of boron in the boron-magnesium composite metal powder is 93% -
98%.
3. The fuel according to claim 2, wherein the mass percentage of boron in the boron-magnesium composite metal powder is 95%.
4. The fuel according to claim 1, wherein the particle diameter of the boron-magnesium composite metal powder is 4 - 6 um.
5. The fuel according to claim 4, wherein the particle diameter of the boron-magnesium composite metal powder is 4.5 um.
6. The fuel according to claim 1, comprising the following components in part by weight: 78 parts of boron-magnesium composite metal powder;
21.2 parts of 1,2 4-triazole nitrate; and
0.8 part of silane coupling agent.
7. The fuel according to claim 1, wherein a preparation process of the 1,2, 4-triazole nitrate is as follows: — adding 1,2,4-triazole into a flask in a nitrogen-filled drying oven, — adding an appropriate amount of absolute methanol under nitrogen flow and stirring conditions, and then — carefully adding concentrated nitric acid; wherein —the mass ratio of the concentrated nitric acid to the 1,2,4-triazole added is 1.2-1.4:1; —reaction is conducted at room temperature,
and LU5S03579 — drying the obtained liquid after reaction, — obtaining the 1,2 4-triazole nitrate as a white crystalline product.
8. The fuel according to claim 1, wherein the purity of the 1,2,4-triazole nitrate is 95%-100%; more preferably 100%.
9. The fuel according to claim 1, wherein the silane coupling agent is KH560.
10. A preparation method for the fuel according to any one of claims 1 - 9, comprising the following steps: (1) preparing raw material solution: dissolving the 1,2,4-triazole nitrate in the methanol at a ratio of 1 g : 50 ml, adding the silane coupling agent KH560 into the mixed solution, and stirring evenly for use; (2) adding boron-magnesium composite metal powder: adding the boron-magnesium composite metal powder into the methanol solution of the silane coupling agent KH560 and the 1,2,4-triazole nitrate at room temperature under stirring condition, stirring fully, and dispersing evenly to form a mixed suspension; (3) vacuum drying: vacuumizing the mixed suspension at 45°C in a four-necked flask under stirring condition until a semi-slurry product with a dry surface is obtained, and then transferring the semi-slurry product to a vacuum oven for drying at 50°C; (4) screening: screening the 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel, classifying the fuel to form the energetic ionic salt 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel with different particle diameters, and keeping the fuel in vacuum for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU503579A LU503579B1 (en) | 2023-03-06 | 2023-03-06 | 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU503579A LU503579B1 (en) | 2023-03-06 | 2023-03-06 | 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel and preparation method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU503579B1 true LU503579B1 (en) | 2023-09-13 |
Family
ID=88068173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU503579A LU503579B1 (en) | 2023-03-06 | 2023-03-06 | 1,2,4-triazole nitrate-coated boron-magnesium composite metal powder fuel and preparation method therefor |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU503579B1 (en) |
-
2023
- 2023-03-06 LU LU503579A patent/LU503579B1/en active IP Right Grant
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Effective date: 20230913 |