A high-energy liquid fuel system containing a transition metal organic complex and a preparation method thereof

Abstract

The present invention provides a high-energy liquid fuel system containing a transition metal organic complex and a preparation method thereof, comprising components in the following percentage contents: 20-40 wt% of a main fuel; 10-15 wt% of a linear ether; 20-30 wt% of a cyclic ether; 15-50 wt% of a transition metal organic complex, and the transition metal organic complex includes one or more of a transition metal carbonyl compound and a transition metal carbonyl hydride. The present invention uses a transition metal organic complex to promote the detonation temperature of the fuel. It can be well dissolved in the linear ether and the cyclic ether, and has a long storage time. It does not settle, aggregate or deteriorate during long-term storage under the condition of air isolation, and has good storage stability; moreover, the transition metal organic complex has a low initiation energy and a high combustion energy, ensuring the detonation temperature of the high-energy liquid fuel. Therefore, the high-energy liquid fuel provided by the present invention can well balance the stability and the detonation performance.

Description

Technical Field

[0001] The present invention relates to the technical field of fuels, and in particular to a high-energy liquid fuel containing a transition metal organic complex and a preparation method thereof. Background Art

[0002] High-energy liquid fuel is a kind of liquid energy fuel with development prospects. Its detonation energy is much higher than that released by explosives of equal mass. It mainly works by spraying the fuel into the air, atomizing the fuel droplets and fully mixing them with air to form a cloud, then using a secondary fuse to implement a strong detonation to detonate the cloud containing fuel droplets, and using high temperature, high pressure and strong shock waves to damage the target; and the shock waves reflect and superpose between the walls, and the overpressure value is much higher than that in an open space.

[0003] Currently, the commonly used high-energy liquid fuel formulations are mainly compounds such as ethylene oxide, propylene oxide, alkanes, alkenes or bridged ring compounds, and the sensitizers mostly use nitrate nitro compounds such as isopropyl nitrate, isobutyl nitrate or nitromethane. To increase the temperature during detonation and enhance its killing ability against soft targets, the prior art generally adds aluminum powder to the fuel to increase the detonation temperature. However, the metal aluminum powder will settle during storage, which greatly affects the stability of the high-energy liquid fuel 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 containing a transition metal organic complex, and the high-energy liquid fuel provided by the present invention has excellent stability and combustion performance.

[0005] The present invention provides a high-energy liquid fuel containing a transition metal organic complex, comprising the following components in percentage by weight:

[0006] 20-40 wt% main fuel;

[0007] 10-15 wt% chain ether;

[0008] 20-30 wt% cyclic ether;

[0009] 15-50 wt% transition metal organic complex, and the transition metal organic complex includes one or more of transition metal carbonyl compounds and transition metal carbonyl hydrides.

[0010] Preferably, the metal in the transition metal organic complex includes one or more of the metal elements in Group VB, Group VIB, Group VIIB and Group VIIIB.

[0011] Preferably, the transition metal organic complex is one or more of vanadium hexacarbonyl, chromium hexacarbonyl, molybdenum hexacarbonyl, tungsten hexacarbonyl, dimanganese decacarbonyl, iron pentacarbonyl, diiron nonacarbonyl, triiron dodecacarbonyl, cobalt octacarbonyl, tetracobalt dodecacarbonyl, nickel tetracarbonyl, manganese pentacarbonyl hydride, cobalt tetracarbonyl hydride, and iron tetracarbonyl dihydride.

[0012] Preferably, the main fuel includes one or more of n-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, dispiro hydrocarbons with no more than 18 carbon atoms, trispiro hydrocarbons with no more than 18 carbon atoms, bicyclic hydrocarbons with no more than 18 carbon atoms, tricyclic hydrocarbons with no more than 18 carbon atoms, tetracyclic hydrocarbons with no more than 18 carbon atoms, and bridged-fused ring hydrocarbons with no more than 18 carbon atoms.

[0013] Preferably, the main fuel is petroleum ether with a boiling range in the interval of 30 - 120 °C.

[0014] Preferably, the chain ethers include one or more of saturated alkyl ethers, aryl or aralkyl ethers, and polymethoxydialkyl ethers; the cyclic ethers include one or more of alkylene oxides, furans or substituted furans, pyrans, and substituted pyrans.

[0015] Preferably, the chain ethers include one or more of methyl ethyl ether, diethyl ether, isopropyl ether, isobutyl ether, methyl tert-butyl ether, anisole, and polymethoxydialkyl ether.

[0016] Preferably, the degree of polymerization of methoxy groups in the polymethoxydialkyl ether is 1 - 20.

[0017] Preferably, the alkyl group in the polymethoxydialkyl ether is one or two of saturated n-alkanes with 1 - 16 carbon atoms, isoalkanes with 3 - 16 carbon atoms, and alkyl groups substituted with 1 aromatic group.

[0018] Preferably, the alkylene oxides include one or more of ethylene oxide, methyloxirane, 2,2-dimethyloxirane, propylene oxide, 2-methyloxirane, 3-methyloxirane, 2,3-dimethyloxirane, and 1,2-epoxybutane.

[0019] There are two main technologies for detonating high-energy liquid fuels: secondary detonation technology or primary detonation technology. For the secondary detonation technology, the first detonation is used to blow up the container and scatter the fuel, and the second detonation is used to ignite the fuel cloud to form a detonation. For the primary detonation technology, compared with the secondary detonation, the primary detonation is simpler and has lower costs. The characteristics of the primary detonation are that the shock wave generated by the external energy is used to synchronously induce the detonation of the fuel (such as electric sparks or detonators), 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.). The present invention is a high-energy liquid fuel for the single detonation technology, and its detonation model is a combustion-to-detonation transition (DDT) model. After the fuel of the present invention generates a cloud, the transition metal organic complex component (represented by tetracarbonyl nickel and pentacarbonyl iron) in the fuel can quickly self-ignite in the air without catalysis, playing the role of self-induced detonation fuel. The present invention provides a scheme for inducing detonation by simply relying on the spontaneous reaction of fuel components without catalysis and physical induction.

[0020] The high-energy liquid fuel provided by the present invention provides detonation temperature with a transition metal organic complex, and the transition metal organic complex can be well dissolved in chain ethers and cyclic ethers, and has a long storage time in the liquid system formed by chain ethers and cyclic ethers, and can be stored for a long time without sedimentation, aggregation or deterioration under air-tight conditions, and has good storage stability; and the transition metal organic complex has lower detonation energy and higher combustion energy, which ensures the detonation temperature of the high-energy liquid fuel. Therefore, the high-energy liquid fuel provided by the present invention has a good balance between stability and combustion performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the test result of the stability experiment 1 at 50℃ for 48 hours;

[0022] Figure 2 This is the test result of the stability experiment 1 at -40℃ for 48 hours;

[0023] Figure 3 This is the test result of the stability test 1 with constant temperature oscillation at 70℃ for 2 hours;

[0024] Figure 4 This is the test result of the stability experiment 1 with constant temperature oscillation at -55℃ for 2 hours;

[0025] Figure 5 This is the test result of stability experiment 2 at 50℃ for 48 hours;

[0026] Figure 6 This is the test result of the stability experiment 2 at -40℃ for 48 hours;

[0027] Figure 7 The test results of constant temperature oscillation at 70 °C for 2 hours in the stability experiment 2;

[0028] Figure 8 The test results of constant temperature oscillation at -55 °C for 2 hours in the stability experiment 2. Specific implementation mode

[0029] The present invention provides a high-energy liquid fuel containing a transition metal organic complex, without a secondary detonator, comprising the following components in percentage by weight:

[0030] 20-40 wt% of the main fuel;

[0031] 10-15 wt% of a chain ether;

[0032] 20-30 wt% of a cyclic ether;

[0033] 15-50 wt% of a transition metal organic complex, the transition metal organic complex comprising one or more of a transition metal carbonyl compound and a transition metal carbonyl hydride.

[0034] The high-energy liquid fuel containing a transition metal organic complex provided by the present invention comprises 15-50 wt% of a transition metal organic complex in percentage by weight, which can specifically be 15, 20, 22, 25, 30, 35, 37, 40, 45 or 50 wt% in the embodiments of the present invention. In the present invention, the transition metal organic complex is a complex formed by a transition metal and an organic ligand, and the organic ligand is a carbonyl group, or a carbonyl group and hydrogen. In the present invention, the transition metal preferably comprises one or more of the metal elements of Group VB, Group VIB, Group VIIB and Group VIIIB, more preferably one or more of vanadium, chromium, molybdenum, tungsten, manganese, iron, cobalt, nickel and manganese; when there are multiple transition metals, the transition metal organic complex is a heteronuclear organic complex.

[0035] In the present invention, the transition metal organic complex is preferably one or more of vanadium hexacarbonyl, chromium hexacarbonyl, molybdenum hexacarbonyl, tungsten hexacarbonyl, dimanganese decacarbonyl, iron pentacarbonyl, diiron nonacarbonyl, triiron dodecacarbonyl, dicobalt octacarbonyl, tetracobalt dodecacarbonyl, nickel tetracarbonyl, manganese pentacarbonyl hydride, cobalt tetracarbonyl hydride and iron tetracarbonyl dihydride; preferably nickel tetracarbonyl or iron pentacarbonyl. In the present invention, the combustion energy of nickel tetracarbonyl is 8.02 kJ·g; the combustion energy of iron pentacarbonyl is 8.21 kJ·g; the combustion energy of dicobalt octacarbonyl is 6.95 kJ·g; the combustion energy of dimanganese decacarbonyl is 8.46 kJ·g.

[0036] In the present invention, the transition metal organic complex can spontaneously combust in air, so the high-energy liquid fuel provided by the present invention does not add a secondary detonator.

[0037] The high-energy liquid fuel containing a transition metal organic complex provided by the present invention comprises a main fuel with a percentage content of 20-40 wt%, which can specifically be 20, 25, 30, 35 or 40 wt% in the embodiments of the present invention. In the present invention, the main fuel is one or several of chain hydrocarbon compounds and cycloalkane compounds, preferably including n-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, dispiro hydrocarbons with no more than 18 carbon atoms, trispiro hydrocarbons with no more than 18 carbon atoms, bicyclic hydrocarbons with no more than 18 carbon atoms, tricyclic hydrocarbons with no more than 18 carbon atoms, tetracyclic hydrocarbons with no more than 18 carbon atoms, and bridged-fused ring hydrocarbons with no more than 18 carbon atoms.

[0038] In the present invention, the n- or iso-alkanes with no more than 12 carbon atoms preferably include one or any mixture of any kind and proportion of n-hexane, n-heptane, n-octane, n-nonane, n-decane, n-undecane, n-dodecane, 2,2-dimethylbutane, 2-ethylbutyl, and 2-ethylhexyl.

[0039] In the present invention, the non-terminal olefins with no more than 12 carbon atoms preferably include one or any mixture of any kind and proportion 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.

[0040] In the present invention, the saturated hydrocarbons with no more than 14 carbon atoms and containing one benzene ring preferably include one or any mixture of any kind and proportion of mixed xylene, mesitylene, mixed ethylmethylbenzene, ethylbenzene, isopropylbenzene, isobutylbenzene, p-methylisopropylbenzene, tert-butylbenzene, p-methyltert-butylbenzene, mixed dibutylbenzene, 1-hexylbenzene, and 1-octylbenzene.

[0041] In the present invention, the bicyclic spiro hydrocarbons having no more than 18 carbon atoms preferably include one or a mixture of any kind and proportion of spiro[4.5]decane, spiro[2.7]decane, spiro[3.5]nonane, spiro[4.4]nonane, and spiro[4.4]1-nonene.

[0042] In the present invention, the tricyclic spiro hydrocarbons having no more than 18 carbon atoms preferably include one or a mixture of any kind and proportion of trispiro[3.0.3.1]nonane, dispiro[2.0.2.3]nonane, and dispiro[5.0.5.2]tetradecane.

[0043] In the present invention, the bicyclic bridged hydrocarbons having no more than 18 carbon atoms preferably include one or a mixture of any kind and proportion of pinane, pinene, santene, 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.

[0044] In the present invention, the tricyclic bridged hydrocarbons having no more than 18 carbon atoms preferably include exo-tetrahydrodicyclopentadiene (JP-10), tricyclo[3.3.1.0 3,7 nonane, tricyclo[4.2.1.0 3,9 nonane, tricyclo[4.3.0.0 3,7 nonane, tricyclo[3.3.1.0 1,5 nonane, tricyclo[4.3.0.0 3,8 nonane, tricyclo[4.3.1.0 2,5 nonane, tricyclo[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, tricyclo[6.1.0.0 2,4 nonane, tricyclo[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 3,7One or any mixture of tetradecane and bicyclo[4.2.4.2]tetradecane in any kind and proportion.

[0045] In the present invention, the tetracyclic hydrocarbon with no more than 18 carbon atoms preferably includes 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 tetracyclo[5.4.1.1 1,5 .1 3,10 tetradecane, or a mixture of any kind and proportion thereof.

[0046] In the present invention, the bridged polycyclic hydrocarbon with 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, tetracyclo[8.3.0.1 2,9 .0 3,8 tetradecane, 1,4:5,8-dimethylenedecahydronaphthalene, 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 proportion thereof.

[0047] In the examples of the present invention, the main fuel is preferably petroleum ether with a boiling range in the interval of 30 - 120 °C, and specifically can be petroleum ether with a boiling range in the interval of 30 - 60 °C, petroleum ether with a boiling range in the interval of 60 - 90 °C, or petroleum ether with a boiling range in the interval of 90 - 120 °C.

[0048] The high-energy liquid fuel containing a transition metal organic complex provided by the present invention includes 10-15 wt% of a chain ether, which can be specifically 10, 11, 12, 13, 14 or 15 wt% in the embodiments of the present invention. In the present invention, the chain ether is preferably one or more of a saturated alkyl ether, an aryl or aralkyl ether, and a polymethoxydialkyl ether. In the present invention, the saturated alkyl ether can be a saturated alkyl ether with a symmetric or asymmetric structure, preferably including methyl ethyl ether, ethyl ether, isopropyl ether, isobutyl ether, and methyl tert-butyl ether. In the present invention, the aryl or aralkyl ether can have a symmetric or asymmetric structure and contain one aryl group, and the aralkyl ether is preferably anisole.

[0049] In the present invention, the degree of polymerization of the methoxy groups in the polymethoxydialkyl ether is preferably 1-20, and can be specifically 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20; when the degree of polymerization of the methoxy groups is 1, the polymethoxydialkyl ether is a monoplymethoxydialkyl ether, when the degree of polymerization of the methoxy groups is 2, the polymethoxydialkyl ether is a dimethoxydialkyl ether, and when the degree of polymerization of the methoxy groups is greater than 2, the polymethoxydialkyl ether is a polymethoxydialkyl ether. In the present invention, the alkyl group in the polymethoxydialkyl ether is preferably a saturated normal alkane with 1-16 carbon atoms (such as methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl), an isoparaffin with 3-16 carbon atoms (such as isopropyl, 2-methylpropyl, tert-butyl, 2,3-dimethylbutyl, 2-ethylhexyl, 2-isopropylhexyl, 2,3,3,4-tetramethylheptyl), or one or two of alkyl groups substituted with 1 aromatic group, preferably methyl, ethyl, 2-methylphenyl, 4-methylphenyl, 4-isopropylphenyl or 4-tert-butylphenyl. In the embodiments of the present invention, the polymethoxydialkyl ether can be specifically monoplymethoxydimethyl ether, dimethoxydimethyl ether or dimethoxydi(2-methylpropyl) ether.

[0050] The high-energy liquid fuel containing a transition metal organic complex provided by the present invention comprises 20-30 wt% of a cyclic ether, specifically 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 or 30 wt% in the examples. In the present invention, the cyclic ether preferably comprises one or more of an alkylene oxide, furan, substituted furan, pyran and substituted pyran. In the present invention, the number of epoxy groups in the alkylene oxide does not exceed two, and the carbon atoms of the ring structure may be modified with different numbers of normal or isomeric alkyl groups, and the number of the normal or isomeric alkyl groups is preferably 1-6, specifically 1, 2, 3, 4, 5 or 6; the length of the normal or isomeric alkyl group preferably does not exceed 6 carbon atoms, specifically 1, 2, 3, 4, 5 or 6. In the present invention, the number of oxygen atoms in the alkoxy group of a single substituent of the alkylene oxide preferably does not exceed 2. In the present invention, the alkylene oxide preferably comprises one or more of ethylene oxide, methyloxirane, dimethyloxirane, propylene oxide, 2-methyloxirane, 3-methyloxirane, 2,3-dimethyloxirane and butylene oxide; specifically ethylene oxide, methyloxirane, dimethyloxirane or propylene oxide in the examples of the present invention.

[0051] In the present invention, the furan or substituted furan is preferably a cyclic ether containing a symmetric or asymmetric structure and not exceeding two furans or substituted furans; the pyran or substituted pyran is preferably a cyclic ether containing a symmetric or asymmetric structure and not exceeding two pyrans or substituted pyrans. In the present invention, the ring structure in the furan, substituted furan, pyran or substituted pyran does not exceed two. In the present invention, the substituent in the substituted furan or substituted pyran is preferably an alkyl group, and the length of the alkyl group preferably does not exceed 6 carbon atoms, specifically 1, 2, 3, 4, 5 or 6; and the oxygen atom content in the alkoxy group of a single substituent does not exceed 2, specifically 1 or 2. In the present invention, the furan or substituted furan preferably comprises one or more of 2-methoxyfuran, 3-methoxyfuran, 2,3-dimethoxyfuran, 2-methoxytetrahydrofuran, 3-methoxytetrahydrofuran and 2,3-dimethoxytetrahydrofuran.

[0052] In the present invention, the linear ether and cyclic ether can provide part of the oxygen required during combustion, and the transition metal organic complex mainly provides the combustion heat of the high-energy liquid.

[0053] In the present invention, the preparation method of the high-energy liquid fuel containing a transition metal organic complex according to the above technical solution preferably comprises the following steps:

[0054] Mixing the main fuel, linear ether and cyclic ether in a dry environment to obtain a premixed liquid;

[0055] In a protective atmosphere, the premixed liquid is mixed with a transition metal organic complex to obtain the high-energy liquid fuel containing the transition metal organic complex.

[0056] In the present invention, the main fuel, the chain ether and the cyclic ether are mixed in a dry environment to obtain a premixed liquid. The present invention has no special limitation on the dry environment, and methods such as drying can be used to remove the moisture in the environment.

[0057] After obtaining the premixed liquid, in the present invention, the premixed liquid is mixed with a transition metal organic complex in a protective atmosphere to obtain the high-energy liquid fuel containing the transition metal organic complex. In the present invention, the protective atmosphere is preferably nitrogen to isolate oxygen.

[0058] In an embodiment of the present invention, the preparation method may specifically be: adding the main fuel, the chain ether and the cyclic ether into a dried quartz bottle, and then adding the transition metal organic complex under nitrogen protection to obtain the high-energy liquid fuel containing the transition metal organic complex, and sealing the quartz bottle.

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

[0060] It should be noted that, without conflict, the following embodiments and the features in the embodiments may be combined with each other; and, based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present disclosure.

[0061] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present disclosure, those skilled in the art should understand that one aspect described herein may be implemented independently of any other aspect, and two or more of these aspects may be combined in various ways. For example, any number of aspects described herein may be used to implement the device and / or practice the method. In addition, this device and / or practice this method may be implemented using other structures and / or functions in addition to one or more of the aspects described herein.

[0062] Examples 1 - 24

[0063] According to the fuel compositions in Tables 1 - 4, the main fuel, the chain ether and the cyclic ether are added into a dried quartz bottle, and then the metal organic complex is added under nitrogen protection to obtain the high-energy liquid fuel, and the quartz bottle is sealed.

[0064] Performance Test

[0065] 1. Stability Experiment 1

[0066] Add 25.0 g (25 wt%) of petroleum ether with a boiling range of 30 - 60 °C and 15.0 g (15 wt%) of ether into a 500 - milliliter dried quartz bottle. Under nitrogen protection, add 30 g (30 wt%) of ethylene oxide and 30 g (30 wt%) of nickel tetracarbonyl, and seal the quartz bottle.

[0067] Prepare 3 bottles of mixed solutions in parallel according to the above - mentioned scheme. Place the 3 bottles of mixed solutions in an incubator at 50 °C and let them stand for 48 hours. Observe whether there is turbidity, sedimentation, adhesion, or stratification.

[0068] Prepare 3 bottles of mixed solutions in parallel according to the above - mentioned scheme. Place the 3 bottles of mixed solutions in an incubator at - 40 °C and let them stand for 48 hours. Observe whether there is turbidity, sedimentation, adhesion, or stratification.

[0069] Prepare 3 bottles of mixed solutions in parallel according to the above - mentioned scheme. Place the 3 bottles of mixed solutions under a constant temperature of 70 °C and shake them on a shaker for 2 hours. Observe whether there is turbidity, sedimentation, adhesion, or stratification.

[0070] Prepare 3 bottles of mixed solutions in parallel according to the above - mentioned scheme. Place the 3 bottles of mixed solutions under a constant temperature of - 55 °C and shake them on a shaker for 2 hours. Observe whether there is turbidity, sedimentation, adhesion, or stratification.

[0071] 2. Stability Experiment 2

[0072] Add 25.0 g (25 wt%) of petroleum ether with a boiling range of 30 - 60 °C and 15.0 g (15 wt%) of ether into a 500 - milliliter dried aluminum bottle. Under nitrogen protection, add 30 g (30 wt%) of ethylene oxide and 30 g (wt%) of iron pentacarbonyl, and seal the aluminum bottle with a quartz stopper with good light transmittance.

[0073] Prepare 3 bottles of mixed solutions in parallel according to the above - mentioned scheme. Place the 3 bottles of mixed solutions in an incubator at 50 °C and let them stand for 48 hours. Observe whether there is turbidity, sedimentation, adhesion, or stratification.

[0074] Prepare 3 bottles of mixed solutions in parallel according to the above - mentioned scheme. Place the 3 bottles of mixed solutions in an incubator at - 40 °C and let them stand for 48 hours. Observe whether there is turbidity, sedimentation, adhesion, or stratification.

[0075] Prepare 3 bottles of mixed solutions in parallel according to the above - mentioned scheme. Place the 3 bottles of mixed solutions under a constant temperature of 70 °C and shake them on a shaker for 2 hours. Observe whether there is turbidity, sedimentation, adhesion, or stratification.

[0076] Prepare 3 bottles of mixed solutions in parallel according to the above - mentioned scheme. Place the 3 bottles of mixed solutions under a constant temperature of - 55 °C and shake them on a shaker for 2 hours. Observe whether there is turbidity, sedimentation, adhesion, or stratification.

[0077] The results of the stability experiment are as follows Figure 1-8 As shown, the experiment confirmed that the above-mentioned mixed fuel did not show turbidity, sedimentation, adhesion or stratification under low temperature, high temperature and vibration, showing good stability.

[0078] 3. Combustion property experiment

[0079] The performance of the high-energy liquid fuel obtained in the examples was tested according to the test procedure of GJB5212-2004, and the results are shown in Table 1-4.

[0080] Table 1 Composition and combustion properties of the fuels of Examples 1-9

[0081]

[0082] Table 2 Composition and combustion properties of the fuels of Examples 10-18

[0083]

[0084]

[0085] Table 3. Composition and combustion properties of the fuels of Examples 19-21

[0086]

[0087] Table 4. Composition and combustion properties of the fuels of Examples 22-24

[0088]

[0089] It can be seen from Tables 1-4 that adding transition metal carbonyl compounds helps to increase the overall combustion heat of the mixed fuel, which has important guiding significance for designing high-energy liquid fuels with better stability and detonation performance.

[0090] As mentioned above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A liquid fuel for fuel-air explosive containing transition metal organic complexes, characterized in that, Without a secondary detonator, it comprises components with the following percentage contents: 20 - 40 wt% of main fuel; 10 - 15 wt% of chain ethers; 20 - 30 wt% of cyclic ethers; 15 - 50 wt% of transition metal organic complexes; The transition metal organic complexes are one or more of chromium hexacarbonyl, molybdenum hexacarbonyl, tungsten hexacarbonyl, iron pentacarbonyl, diiron nonacarbonyl, triiron dodecacarbonyl, cobalt octacarbonyl, and nickel tetracarbonyl; The chain ethers include one or more of methyl ethyl ether, ethyl ether, isopropyl ether, isobutyl ether, methyl tert - butyl ether, anisole, and polymethoxydialkyl ethers; The cyclic ethers include one or more of alkylene oxides, furan or substituted furan, pyran, and substituted pyran; the alkylene oxides include one or more of ethylene oxide, methyloxirane, 2,2 - dimethyloxirane, propylene oxide, 2 - methyloxirane, 3 - methyloxirane, 2,3 - dimethyloxirane, and epoxybutane.

2. The liquid fuel for fuel-air explosive according to claim 1, wherein The main fuel includes one or more of normal alkanes with no more than 12 carbon atoms, isoparaffins 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, dispiro hydrocarbons with no more than 18 carbon atoms, trispiro hydrocarbons with no more than 18 carbon atoms, bicyclic hydrocarbons with no more than 18 carbon atoms, tricyclic hydrocarbons with no more than 18 carbon atoms, tetracyclic hydrocarbons with no more than 18 carbon atoms, and bridged - fused ring hydrocarbons with no more than 18 carbon atoms.

3. The liquid fuel for cloud explosion according to claim 2, wherein The main fuel is petroleum ether with a boiling range in the interval of 30 - 120 °C.

4. The liquid fuel for fuel-air explosive according to claim 1, characterized in that, The degree of polymerization of methoxy groups in the polymethoxydialkyl ether is 1 - 20.

5. The liquid fuel for fuel-air explosive according to claim 4, characterized in that, The alkyl groups in the polymethoxydialkyl ether are one or two of saturated normal alkanes with 1 - 16 carbon atoms, isoparaffins with 3 - 16 carbon atoms, and alkyl groups substituted by one aromatic group.

6. The preparation method of the liquid fuel for fuel - air explosive containing transition metal organic complexes as described in any one of claims 1 - 5 includes the following steps: Mix the main fuel, chain ethers, and cyclic ethers in a dry environment to obtain a premixed liquid; In a protective atmosphere, mix the premixed liquid with the transition metal organic complexes to obtain the liquid fuel for fuel - air explosive containing transition metal organic complexes.

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