Self-initiated high-power high-energy liquid fuel and preparation method thereof

Abstract

The application provides a self-initiating high-power high-energy liquid fuel and a preparation method thereof, which comprises the following components in percentage by weight: 10-50wt% of alkyl aluminum; 40-75wt% of main fuel; 10-35wt% of oxygen-containing fuel; the main fuel is one or more of chain hydrocarbon compounds and cyclic hydrocarbon compounds; and the oxygen-containing fuel is polymethoxy dialkyl ether. The high-energy liquid fuel provided by the application provides a detonation temperature by alkyl aluminum, the alkyl aluminum is dissolved in the main fuel, and no settlement, aggregation or deterioration occurs during long-term storage, and the high-energy liquid fuel has good storage stability; moreover, the alkyl aluminum has lower initiation energy and higher combustion energy, which can effectively ensure the detonation temperature of the high-energy liquid fuel. The polymethoxy dialkyl ether not only ensures the oxygen content of the fuel, but also can improve the combustion rate of the high-energy liquid fuel, better play the energy of the high-energy liquid fuel, and further improve the combustion performance of the high-energy liquid fuel.

Description

Technical Field

[0001] The present invention relates to the field of fuel technology, in particular to a self-igniting high-energy liquid fuel with high power and a preparation method thereof. Background Art

[0002] High-energy liquid fuel is a liquid fuel with development prospects. Its detonation energy is much higher than the energy released by the same mass of explosives. It is mainly achieved by throwing the fuel into the air, atomizing the fuel droplets and fully mixing them with the air to form a cloud. A secondary fuse is then used to implement strong initiation, detonating the cloud containing the fuel droplets, and using high temperature, high pressure and strong shock waves to destroy the target. The shock waves are reflected and superimposed between the walls, and the overpressure value is much higher than that in open spaces.

[0003] High-energy liquid fuels are primarily composed of ethylene oxide, propylene oxide, cyclopentene, or bridged ring compounds. Sensitizers are often nitrate nitro compounds such as isopropyl nitrate, isobutyl nitrate, or nitromethane. To increase the detonation temperature, detonation velocity, and lethal radius of high-energy liquid fuels, and enhance their ability to kill soft targets, existing technologies typically add metal powders such as aluminum to the fuel to raise the detonation temperature. However, solid metal powders cannot be effectively dispersed in liquid hydrocarbons and related fuels. Their high surface energy (the smaller the metal powder particles, the higher the surface energy, the faster the combustion rate, and the greater the effect of raising the detonation temperature in a short period of time) makes them prone to coagulation, significantly affecting their stability during storage and use. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a high-energy liquid fuel with self-ignition and high power and a preparation method thereof. The high-energy liquid fuel provided by the present invention has excellent stability and combustion performance, high calorific value, high detonation power, and does not require a secondary initiator.

[0005] The present invention provides a high-energy liquid fuel, which does not contain a secondary initiator and includes the following components in percentage:

[0006] 10-50 wt% aluminum alkyl;

[0007] 40-75wt% main fuel;

[0008] 10-35 wt% oxygenated fuel;

[0009] The main fuel is one or more of chain hydrocarbon compounds and cyclic hydrocarbon compounds;

[0010] The oxygen-containing fuel is polymethoxydialkyl ether.

[0011] Preferably, the alkylaluminum includes one or more of trimethylaluminum, triethylaluminum, tripropylaluminum, diisopropylaluminum hydride, diisobutylaluminum hydride and tris(dimethylamino)aluminum dimer.

[0012] Preferably, the alkyl aluminum is triethyl aluminum.

[0013] Preferably, the main fuel includes but is not limited to one or more of normal alkanes with a carbon number not exceeding 12, isoalkanes with a carbon number not exceeding 12, non-terminal olefins with a carbon number not exceeding 12, saturated hydrocarbons with a carbon number not exceeding 14 and containing one benzene ring, dispirocyclic hydrocarbons with a carbon number not exceeding 18, trispirocyclic hydrocarbons with a carbon number not exceeding 18, di-bridged cyclic hydrocarbons with a carbon number not exceeding 18, tri-bridged cyclic hydrocarbons with a carbon number not exceeding 18, tetra-bridged cyclic hydrocarbons with a carbon number not exceeding 18, and bridged and parallel cyclic hydrocarbons with a carbon number not exceeding 18.

[0014] Preferably, the main fuel comprises a mixture of JP-10 and 2,3-dimethylbutane.

[0015] Preferably, the polymethoxy dialkyl ether has a methoxy polymerization degree of 1-20.

[0016] Preferably, the alkyl group in the polymethoxydialkyl ether is one or two of a saturated normal alkane having 1 to 16 carbon atoms, an isoalkane having 3 to 16 carbon atoms, and an aromatic substituted alkyl group.

[0017] The present invention provides a method for preparing the high-energy liquid fuel described in the above technical solution, comprising the following steps:

[0018] mixing the main fuel and the oxygenated fuel in a dry environment to obtain a premixed liquid;

[0019] The premixed liquid is mixed with alkyl aluminum in a protective atmosphere to obtain the self-igniting high-energy liquid fuel with great power.

[0020] Preferably, the protective atmosphere is nitrogen.

[0021] The present invention provides a self-igniting, high-energy liquid fuel that contains no secondary initiator and comprises the following components in percentages: 10-50 wt% aluminum alkyl; 40-75 wt% primary fuel; and 10-35 wt% oxygenated fuel. The primary fuel is one or more of a chain hydrocarbon compound and a cyclic hydrocarbon compound; and the oxygenated fuel is a polymethoxydialkyl ether. The high-energy liquid fuel provided by the present invention is a formula that balances stability and detonation performance. Alkyl aluminum is used as a high-energy additive to increase the detonation temperature. Compared with aluminum insoluble in hydrocarbon solvents, alkyl aluminum exhibits efficient solubility in the main fuel and is a transparent liquid soluble in hydrocarbon solvents. It has a long shelf life in the liquid system formed by the main fuel and the oxygen-containing fuel and can be stored for a long time under conditions isolated from air and water vapor without sedimentation, aggregation, or deterioration, thus having good storage stability. In addition, the alkyl aluminum has low initiation energy and high combustion energy. The heat of combustion of the alkyl aluminum is greater than 40 MJ / kg, which is higher than the 29.7 MJ / kg of ethylene oxide and the 32.5 MJ / kg of propylene oxide, thereby ensuring the detonation temperature of the high-energy liquid fuel. Moreover, the polymethoxydialkyl ether as the oxygen-containing fuel not only ensures the oxygen content, but also increases the combustion rate of the high-energy liquid fuel, better utilizes the energy of the high-energy liquid fuel, enhances the detonation effect in an oxygen-deficient environment, and further improves the combustion performance of the high-energy liquid fuel. It also reduces the sedimentation or aggregation of ultrafine powder in the organic fuel. Therefore, the high-energy liquid fuel provided by the present invention achieves a good balance between stability and combustion performance. Furthermore, the high-energy liquid fuel provided by the present application utilizes a single-stage initiation mechanism. After the monomers of the high-energy liquid fuel break down to form a cloud, the alkyl aluminum component rapidly spontaneously ignites in air without the need for catalysis or physical induction, acting as a self-detonating fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the test result of stability experiment 1 at 50℃ for 48 hours;

[0023] Figure 2 This is the test result of stability experiment 1 at -40℃ constant temperature for 48 hours;

[0024] Figure 3 This is the test result of the stability experiment 1 with constant temperature oscillation at 70℃ for 2 hours;

[0025] Figure 4 This is the test result of the stability test 1 with constant temperature oscillation at -55℃ for 2 hours;

[0026] Figure 5 This is the test result of stability experiment 2 at a constant temperature of 50℃ for 48 hours;

[0027] Figure 6 This is the test result of stability experiment 2 at a constant temperature of -40℃ for 48 hours;

[0028] Figure 7 This is the test result of the stability experiment 2 with constant temperature oscillation at 70℃ for 2 hours;

[0029] Figure 8 This is the test result of the stability experiment 2 with constant temperature oscillation at -55℃ for 2 hours. DETAILED DESCRIPTION

[0030] The present invention provides a self-initiating high-energy liquid fuel with high power, which does not contain a secondary initiator and includes the following components in percentage:

[0031] 10-50 wt% aluminum alkyl;

[0032] 40-75wt% main fuel;

[0033] 10-35 wt% oxygenated fuel;

[0034] The main fuel is one or more of chain hydrocarbon compounds and cyclic hydrocarbon compounds;

[0035] The oxygen-containing fuel is polymethoxydialkyl ether.

[0036] The high-energy liquid fuel provided by the present invention comprises an alkyl aluminum in a percentage of 10-50wt%, which can be specifically 10, 13, 15, 20, 22, 25, 30, 35, 37, 40, 45 or 50wt%. There are two main technologies for initiating high-energy liquid fuel: secondary initiation technology or primary initiation technology. For secondary initiation technology, the first initiation is used to explode the container and sprinkle the fuel, and the second initiation is used to ignite the fuel cloud to form a detonation. For primary initiation technology, compared with secondary initiation, primary initiation is simpler and has lower cost. The characteristic of primary initiation is that the shock wave generated by external energy is used to synchronously induce the detonation of the fuel (such as electric sparks or initiating powder), or the fuel components themselves release heat to gradually induce the detonation of the fuel (such as chemical catalysis, photocatalysis or thermal turbulent jet initiation method, etc.). This invention provides a high-energy liquid fuel with single-shot initiation technology. Its detonation model is a deflagration-to-detonation transition (DDT) model. After generating a cloud, the alkyl aluminum components (represented by triethylaluminum and diisobutylaluminum hydride) in the fuel rapidly spontaneously ignite in air, acting as a self-detonating fuel. This is the first reported method of inducing detonation by relying solely on the spontaneous reaction of fuel components, without catalysis or physical induction.

[0037] In the present invention, the alkylaluminum is a monoalkylaluminum, a dialkylaluminum, or a trialkylaluminum, preferably comprising one or more of trimethylaluminum, triethylaluminum, tripropylaluminum, diisopropylaluminum hydride, diisobutylaluminum hydride, and tris(dimethylamino)aluminum dimer, preferably triethylaluminum. In the present invention, the heat of combustion of the trimethylaluminum is 44.0 MJ / kg, the heat of combustion of triethylaluminum is 42.7 MJ / kg, the heat of combustion of tripropylaluminum is 45.5 MJ / kg, the heat of combustion of diisobutylaluminum hydride is 45.1 MJ / kg, and the heat of combustion of tris(dimethylamino)aluminum dimer is 41.9 MJ / kg.

[0038] The aluminum alkyls (represented by triethylaluminum and diisobutylaluminum hydride) in the high-energy liquid fuel provided by the present invention are transparent liquids soluble in hydrocarbon compounds. They do not aggregate after mixing with hydrocarbons and oxygenated fuels and can be stored for long periods without deterioration, sedimentation, or aggregation under air- and water-vapor-proof conditions. Furthermore, the aluminum alkyls have low detonation energy and high combustion energy. Their heat of combustion is greater than 40 MJ / kg, exceeding the 29.7 MJ / kg of ethylene oxide and the 32.5 MJ / kg of propylene oxide, achieving a good balance between detonation energy and storage stability.

[0039] In the present invention, the alkyl aluminum can spontaneously combust in the air, so the high-energy liquid fuel provided by the present invention does not require the addition of a secondary initiator.

[0040] The high-energy liquid fuel provided by the present invention includes a main fuel with a percentage of 40-75wt%, which can be specifically 40, 45, 50, 55, 60, 65, 70, 73 or 75wt% in embodiments of the present invention. In the present invention, the main fuel is one or more of chain hydrocarbon compounds and cyclic hydrocarbon compounds, preferably including one or more of normal alkanes with no more than 12 carbon atoms, isoalkanes with no more than 12 carbon atoms, non-terminal olefins with no more than 12 carbon atoms, saturated hydrocarbons with no more than 14 carbon atoms and containing one benzene ring, dispirocyclic hydrocarbons with no more than 18 carbon atoms, trispirocyclic hydrocarbons with no more than 18 carbon atoms, dibridged cyclic hydrocarbons with no more than 18 carbon atoms, tribridged cyclic hydrocarbons with no more than 18 carbon atoms, tetrabridged cyclic hydrocarbons with no more than 18 carbon atoms, and bridged and parallel cyclic hydrocarbons with no more than 18 carbon atoms.

[0041] In the present invention, the normal or isomeric alkane having no more than 12 carbon atoms preferably includes one of n-hexane, n-heptane, n-octane, n-nonane, n-decane, n-undecane, n-dodecane, 2,2-dimethylbutane, 2-ethylbutyl and 2-ethylhexyl, or a mixture of any kind and proportion.

[0042] In the present invention, the non-terminal olefin having no more than 12 carbon atoms preferably includes one of 2-hexene, 2-heptene, 2-octene, 3-octene, 4-octene, 2,4,4-trimethyl-1-pentene, 2,4,4-trimethyl-2-pentene, 2-methyl-2-heptene, 2,2-dimethyl-3-hexene, 2,3-dimethyl-2-hexene, 5-methyl-1-heptene, 3-methyl-1-heptene, 3,5-dimethyl-3-hexene, 2,4-dimethyl-1-heptene, 2-nonene, 3-nonene, 4-nonene, 3,5,5-trimethyl-1-hexene, 3,5,5-trimethyl-2-hexene, 2,6-dimethyl-1-heptene, 2,3-dimethyl-2-heptene and 2,6-dimethyl-3-heptene, or a mixture of any kind and proportion.

[0043] In the present invention, the saturated hydrocarbon having no more than 14 carbon atoms and containing one benzene ring preferably includes one of mixed xylenes, mesitylene, mixed methyl and ethyl benzenes, ethylbenzene, isopropylbenzene, isobutylbenzene, p-methyl isopropylbenzene, tert-butylbenzene, p-methyl tert-butylbenzene, mixed dibutylbenzenes, 1-hexylbenzene and 1-octylbenzene, or a mixture of any type and proportion.

[0044] In the present invention, the dispirocycloalkane having no more than 18 carbon atoms preferably includes one of spiro[4,5]decane, spiro[2,7]decane, spiro[3,5]nonane, spiro[4,4]nonane and spiro[4,4]1-nonene, or a mixture of any kind and proportion.

[0045] In the present invention, the trispirocycloalkane having no more than 18 carbon atoms preferably includes one of trispiro[3,0,3,1]nonane, dispiro[2,0,2,3]nonane and dispiro[5,0,5,2]tetradecane or a mixture of any kind and ratio.

[0046] In the present invention, the dicycloalkane having no more than 18 carbon atoms preferably includes pinane, pinene, danene, 5-ethyl-2-norbornene, 5,5-dimethylnorbornene, bicyclo[3,3,2]decane, bicyclo[4,2,2]decane, bicyclo[4,3,1]decane, bicyclo[3,3,1]nonane, bicyclo[6,1,0]nonane, bicyclo[3,3,2]nonane, bicyclo[4,3,1 ]nonane, 6,6-dimethyl-bicyclo[3,3,1]-2-octene, 3-methylbicyclo[3,2,1]-2-octene, 1,2-dimethylbicyclo[2,2,1]-2-heptene, 5-methylenespiro[3,4]octane, 1-methyl-4-pentylbicyclo[2,2,2]octane and 2-ethyl-3-butylbicyclo[2,2,2]octane, or a mixture of any kind and ratio.

[0047] In the present invention, the three-bridged cyclic hydrocarbon having no more than 18 carbon atoms preferably includes tetrahydrodicyclopentadiene (JP-10), tricyclo[3.3.1.0 3,7 ]Nonane, tricyclic [4.2.1.0 3,9 ]Nonane, tricyclic[4.3.0.0 3,7 ]Nonane, tricyclic [3.3.1.0 1,5 ]Nonane, tricyclic [4.3.0.0 3,8 ]Nonane, tricyclic [4.3.1.0 2,5 ]Nonane, tricyclic [3.2.2.0 2,5 ]nonane, 1-ethyl-tricyclo[2.2.1.0 2,6 ]heptane, 3-ethyl-tricyclo[2.2.1.0 2,6 ]heptane, 1,7-dimethyl-tricyclo[2.2.1.0 2,6 ]Heptane, tricyclic [6.1.0.0 2,4 ]Nonane, tricyclic [4.2.1.0 2,4 ]nonane, 9-methyltricyclo[4.3.0.0 2,9 ] octane, tricyclo[4,4,4]tetradecane, 2-tert-butyltricyclo[3.3.1.1 3,7 ]tetradecane and bicyclo[4,2,4,2]tetradecane, or a mixture of any kind and ratio.

[0048] In the present invention, the four-bridged cycloalkanes having no more than 18 carbon atoms preferably include tert-butyladamantane, n-butyladamantane, 1,3,5,7-tetramethyladamantane, 7,7'-bicyclo[2.2.1]heptane, 2,2-methylspiro[cyclopropyl-1,2'-tricyclo[3.3.1.1 3,7 ]decane], tetracyclo[5.4.1.1 1,5 .1 3,9 ]Tetradecane and tetracyclic [5.4.1.1 1,5 .1 3,10 ] one of tetradecane or a mixture of any kind and ratio.

[0049] In the present invention, the bridged cyclic hydrocarbon having no more than 18 carbon atoms preferably includes spiro[bicyclo[4,1,0]heptyl]-7,1'-cyclooctane, 4,11,11-trimethyltricyclo[6.2.1.0 2,7 ]Undecane, Tetracyclic [8.3.0.1 2,9 .0 3,8 ]Tetradecane, 1,4:5,8-dimethyldecahydronaphthalene, 7-butyl-tricyclo[4.2.2.0 2,5]-7-decene, 1,2,3,4,5,6,7,8,9,10-decahydro-1,4-ethylbenzocyclooctane, 3,4,9,10-tetramethyl-tricyclo-[4.2.2.0 2,5 ]-7-decene and dispiro[cyclopropyl-1,3'-tricyclo[5.2.1.0 2,6 ]4,8-decadiene-10',1"-cyclopropane] or a mixture of any kind and ratio.

[0050] In the present invention, the main fuel preferably includes a mixture of JP-10 and 2,3-dimethylbutane, a mixture of pinane and n-heptane, or a mixture of 1,3,5,7-tetramethyladamantane and 2-octene. In the present invention, JP-10 and 2,3-dimethylbutane have excellent temperature stability and are both transparent liquids with good fluidity in the range of -30-40°C. The mass percentage of JP-10 in the mixture of JP-10 and 2,3-dimethylbutane is preferably 35-80%, and in embodiments of the present invention, can be specifically 35, 37, 40, 45, 50, 55, 60, 65, 70, 75, 77, or 80%. The mass percentage of pinane in the mixture of pinane and n-heptane is preferably 20%, and the mass percentage of 1,3,5,7-tetramethyladamantane in the mixture of 1,3,5,7-tetramethyladamantane and 2-octene is preferably 20%.

[0051] In this invention, 2-octene is a large-scale organic primary fuel, serving the same function as JP-10. 1,3,5,7-Tetramethyladamantane has a similar heat of combustion to 2-octene, but a higher physical density, meaning its effective energy density is higher, thus increasing the energy density of the entire charge. Furthermore, the two are highly miscible, ensuring charge uniformity. A high proportion of 2-octene improves atomization during charge dispersion, forming small droplets. A high proportion of 1,3,5,7-Tetramethyladamantane can result in the formation of numerous small solid particles during charge dispersion, leading to a higher heat of combustion.

[0052] The high-energy liquid fuel provided by the present invention comprises an oxygenated fuel having a percentage content of 10-35 wt %, which in embodiments of the present invention may be specifically 10, 11, 12, 13, 14, 15, 20, 25, 30, or 35 wt %. In the present invention, the oxygenated fuel is a polymethoxydialkyl ether; the methoxyl degree of polymerization of the polymethoxydialkyl ether is preferably 1-20, which may be specifically 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20; and the alkyl group in the polymethoxydialkyl ether is preferably one or two of a saturated normal alkane having 1-16 carbon atoms, an isoalkane having 3-16 carbon atoms, or an aromatic substituted alkyl group, and is preferably 2-ethylhexyl, n-butyl, or 2-methylpropyl. In the present invention, the oxygenated fuel may be a single compound of the aforementioned polymethoxy dialkyl ether, or a mixture of multiple polymethoxy dialkyl ethers. When a mixture is used as a raw material component, no purification step is required, resulting in lower costs and better economic efficiency. In an embodiment of the present invention, the oxygenated fuel may specifically be monopolymethoxy di(2-methylpropyl) ether.

[0053] The present invention provides a method for preparing the high-energy liquid fuel described in the above technical solution, comprising the following steps:

[0054] mixing the main fuel and the oxygenated fuel in a dry environment to obtain a premixed liquid;

[0055] The premixed liquid is mixed with alkyl aluminum in a protective atmosphere to obtain the self-igniting high-energy liquid fuel with great power.

[0056] The present invention mixes the main fuel and the oxygen-containing fuel in a dry environment to obtain a premixed liquid. The present invention has no particular limitation on the dry environment, and moisture in the environment can be removed by drying or other methods.

[0057] After obtaining the premixed liquid, the present invention mixes the premixed liquid with an alkyl aluminum in a protective atmosphere to obtain the self-igniting high-energy liquid fuel. In the present invention, the protective atmosphere is preferably nitrogen to isolate oxygen.

[0058] After obtaining the high-energy liquid fuel, the present invention packages the high-energy liquid fuel. In an embodiment of the present invention, to better observe the stability of the fuel, the high-energy liquid fuel is packaged in a quartz bottle. The preparation method can be specifically as follows: adding the main fuel and the oxygen-containing fuel to a dried quartz bottle, then adding the alkyl aluminum under nitrogen protection to obtain the high-energy liquid fuel, and sealing the quartz bottle.

[0059] The embodiments of the present invention are described in detail below.

[0060] It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments may be combined with each other; and, based on the embodiments in this disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative work are within the scope of protection of this disclosure.

[0061] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this disclosure, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0062] The preparation method of the high-energy liquid fuel in the embodiment is as follows: adding the main fuel and the oxygen-containing fuel into a dried quartz bottle, adding alkyl aluminum under nitrogen protection, and sealing the quartz bottle.

[0063] Example 1

[0064] 19.24 g (19.24 wt%) of JP-10, 32.73 g (32.73 wt%) of 2,3-dimethylbutane, and 11 g (11 wt%) of monopolymethoxybis(2-ethylhexyl) ether were added to a 500 mL dried aluminum bottle. 37 g (37 wt%) of triethylaluminum was added under nitrogen protection, and the quartz bottle was sealed to obtain a high-energy liquid fuel.

[0065] Example 2

[0066] 35.75 g (35.75 wt%) of JP-10, 29.25 g (29.2 wt%) of 2,3-dimethylbutane, and 13 g (13 wt%) of monopolymethoxybis(2-ethylhexyl) ether were added to a 500 mL dried aluminum bottle. 22 g (22 wt%) of triethylaluminum was added under nitrogen protection, and the aluminum bottle was sealed to obtain a high-energy liquid fuel.

[0067] Example 3

[0068] 56.21 g (56.21 wt%) of JP-10, 16.79 g (16.79 wt%) of 2,3-dimethylbutane, and 14 g (14 wt%) of monopolymethoxybis(2-ethylhexyl) ether were added to a 500 mL dried aluminum bottle. 13 g (13 wt%) of triethylaluminum was added under nitrogen protection, and the aluminum bottle was sealed to obtain a high-energy liquid fuel.

[0069] Test Case

[0070] 1. Stability test 1

[0071] 35.8 g (35.8 wt%) of JP-10, 29.2 g (29.2 wt%) of 2,3-dimethylbutane, and 13 g (13 wt%) of monopolymethoxybis(2-ethylhexyl) ether were added to a 500 mL dried quartz bottle. 22 g (22 wt%) of triethylaluminum was added under nitrogen protection, and the quartz bottle was sealed.

[0072] Prepare three bottles of mixed solution in parallel according to the above scheme, place the three bottles of mixed solution in a 50°C constant temperature box and let it stand for 48 hours, and observe whether it is turbid, sedimentation, stickiness or stratification.

[0073] Prepare three bottles of mixed solution in parallel according to the above scheme, place the three bottles of mixed solution in a -40°C constant temperature box for 48 hours, and observe whether they are turbid, sedimented, sticky or stratified.

[0074] Prepare three bottles of mixed solution in parallel according to the above scheme. Place the three bottles of mixed solution at a constant temperature of 70°C and shake on a shaker for 2 hours to observe whether there is turbidity, sedimentation, stickiness or stratification.

[0075] Prepare three bottles of mixed solution in parallel according to the above scheme. Place the three bottles of mixed solution at a constant temperature of -55°C and shake on a shaker for 2 hours to observe whether they are turbid, sedimented, sticky or stratified.

[0076] 2. Stability test 2

[0077] 35.8 g (35.8 wt%) of JP-10, 29.2 g (29.2 wt%) of 2,3-dimethylbutane, and 13 g (13 wt%) of monopolymethoxydi-n-butyl ether were added to a 500 mL oven-dried aluminum bottle. 22 g (22 wt%) of triethylaluminum was added under nitrogen protection, and the bottle mouth was sealed with a light-transmitting quartz stopper.

[0078] Prepare three bottles of mixed solution in parallel according to the above scheme, place the three bottles of mixed solution in a 50°C constant temperature box for 48 hours, and observe whether they are turbid, sedimented, sticky or stratified.

[0079] Prepare three bottles of mixed solution in parallel according to the above scheme, place the three bottles of mixed solution in a -40°C constant temperature box for 48 hours, and observe whether they are turbid, sedimented, sticky or stratified.

[0080] Prepare three bottles of mixed solution in parallel according to the above scheme. Place the three bottles of mixed solution at a constant temperature of 70°C and shake on a shaker for 2 hours to observe whether there is turbidity, sedimentation, stickiness or stratification.

[0081] Prepare three bottles of mixed solution in parallel according to the above scheme. Place the three bottles of mixed solution at a constant temperature of -55°C and shake on a shaker for 2 hours to observe whether they are turbid, sedimented, sticky or stratified.

[0082] In order to facilitate observation, the fuel sample in the stability test 2 was moved to a sample bottle in the glove box and photographed. The results of the stability tests 1 and 2 are shown in the figure below. Figure 1-8 As shown, the results confirmed that the mixed fuel showed no turbidity, sedimentation, stickiness or stratification at low temperature, high temperature and vibration, showing good stability.

[0083] 3. Combustion properties test

[0084] The high-energy liquid fuels obtained in Examples 1-3 were tested, and the results are shown in Table 1.

[0085] The contents not described in detail in the specification of the present invention belong to the common knowledge of professionals in this field.

[0086] Table 1. Formula and performance comparison of high-energy liquid fuel obtained in Example 1 of the present invention

[0087]

[0088] As can be seen from Table 1, the use of alkyl aluminum instead of metallic aluminum achieves a better balance between stability and combustion performance.

[0089] Examples 4-6

[0090] Using the composition shown in Table 2 as raw materials, high-energy liquid fuel was obtained according to the preparation scheme of Example 1. The performance test results are shown in Table 2.

[0091] Table 2. Comparison of the formulation and performance of high-energy liquid fuels of Examples 4-6 of the present invention

[0092]

[0093] It can be seen from Table 2 that the use of alkyl aluminum instead of metallic aluminum achieves a better balance between stability and combustion performance.

[0094] Examples 7-9

[0095] Using the composition shown in Table 3 as raw materials, high-energy liquid fuel was obtained according to the preparation scheme of Example 1. The performance test results are shown in Table 3.

[0096] Table 3. Comparison of the formulation and performance of high-energy liquid fuels of Examples 7-9 of the present invention

[0097]

[0098] It can be seen from Table 3 that the use of alkyl aluminum instead of metallic aluminum achieves a better balance between stability and combustion performance.

[0099] Examples 10-12

[0100] Using the composition shown in Table 4 as raw materials, high-energy liquid fuel was obtained according to the preparation scheme of Example 1. The performance test results are shown in Table 4.

[0101] Table 4. Comparison of the formulation and performance of high-energy liquid fuels in Examples 10-12 of the present invention

[0102]

[0103] It can be seen from Table 4 that the use of alkyl aluminum instead of metallic aluminum achieves a better balance between stability and combustion performance.

[0104] Examples 13-15

[0105] Using the composition shown in Table 5 as raw materials, high-energy liquid fuel was obtained according to the preparation scheme of Example 1. The performance test results are shown in Table 5.

[0106] Table 5. Comparison of the formulation and performance of high-energy liquid fuels of Examples 13-15 of the present invention

[0107]

[0108] It can be seen from Table 5 that the use of alkyl aluminum instead of metallic aluminum achieves a better balance between stability and combustion performance.

[0109] Examples 16-18

[0110] Using the composition shown in Table 6 as raw materials, high-energy liquid fuel was obtained according to the preparation scheme of Example 1. The performance test results are shown in Table 6.

[0111] Table 6. Comparison of the formulation and performance of high-energy liquid fuels in Examples 16-18 of the present invention

[0112]

[0113] It can be seen from Table 6 that the use of dialkyl aluminum instead of metallic aluminum achieves a better balance between stability and combustion performance.

[0114] The data in Tables 1-6 show that the combination of JP-10 and 2,3-dimethylbutane as the main fuel, polymethoxydi(2-ethylhexyl)ether as the oxygenated fuel, and triethylaluminum as the initiator and high-temperature additive has the highest combustion heat. Its overall performance is superior to other combinations.

[0115] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A self-detonating high-powered cloud-explosion fuel, characterized in that: It does not contain secondary detonator and is composed of the following components in percentage: 10-50 wt% aluminum alkyl; 40-75wt% main fuel; 10-35wt% oxygenated fuel; The main fuel is one or more of chain hydrocarbon compounds and cyclic hydrocarbon compounds; The oxygen-containing fuel is a polymethoxydialkyl ether, the methoxy polymerization degree of the polymethoxydialkyl ether is 1-20, and the alkyl group in the polymethoxydialkyl ether is one or two of a saturated normal alkane with 1-16 carbon atoms, an isoalkane with 3-16 carbon atoms, and an aromatic substituted alkyl group.

2. The cloud explosion fuel according to claim 1, characterized in that: The alkylaluminum includes one or more of trimethylaluminum, triethylaluminum, tripropylaluminum, diisopropylaluminum hydride, diisobutylaluminum hydride and tris(dimethylamino)aluminum dimer.

3. The cloud explosion fuel according to claim 2, characterized in that: The alkyl aluminum is triethyl aluminum.

4. The cloud explosion fuel according to claim 1, characterized in that: The main fuel includes one or more of normal alkanes with a carbon number not exceeding 12, isoalkanes with a carbon number not exceeding 12, non-terminal olefins with a carbon number not exceeding 12, saturated hydrocarbons with a carbon number not exceeding 14 and containing one benzene ring, dispirocyclic hydrocarbons with a carbon number not exceeding 18, trispirocyclic hydrocarbons with a carbon number not exceeding 18, di-bridged cyclic hydrocarbons with a carbon number not exceeding 18, tri-bridged cyclic hydrocarbons with a carbon number not exceeding 18, tetra-bridged cyclic hydrocarbons with a carbon number not exceeding 18, and bridged and parallel cyclic hydrocarbons with a carbon number not exceeding 18.

5. The cloud explosion fuel according to claim 4, characterized in that: The main fuel includes a mixture of tetrahydrodicyclopentadiene and 2,3-dimethylbutane.

6. The method for preparing the cloud-explosion fuel according to any one of claims 1 to 5, characterized in that: The following steps are involved: mixing the main fuel and the oxygenated fuel in a dry environment to obtain a premixed liquid; The premixed liquid is mixed with alkyl aluminum in a protective atmosphere to obtain the self-detonating high-powered cloud-explosion fuel.

7. The preparation method according to claim 6, characterized in that The protective atmosphere is nitrogen.

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