Low-energy laser combustion improver and safe ignition method
By preparing complexes containing phosphorus ligands, sulfur ligands, and nickel salts, and utilizing the conversion of light energy into heat energy, the problem of the difficulty in safely igniting explosive materials in existing technologies has been solved. This achieves a safe and reliable ignition effect under low-energy lasers, making it suitable for performances and celebrations, and possessing industrialization potential.
Patent Information
- Application Number
- CN202511286379.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2025-12-30
AI Technical Summary
The lack of simple, readily available, and inexpensive laser-assisted combustion materials in the current technology leads to hidden safety risks when igniting explosive objects at close range, making it difficult to effectively ignite explosive materials at low ambient temperatures.
A complex containing phosphorus ligands, sulfur ligands, nickel salts, and organic solvents is used to convert light energy into heat energy, forming a nickel-sulfur complex that promotes the conversion of light energy into heat energy to ignite the combustible material.
Under low-energy laser irradiation, the combustion accelerant can safely and reliably ignite explosive materials at lower ambient temperatures, making it suitable for performances, magic shows, and celebrations. It is also simple, safe, and inexpensive to prepare, making it suitable for industrial promotion.
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Figure CN121226104A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of combustion accelerant technology, and particularly relates to a low-energy laser combustion accelerant and a safe ignition method. Background Technology
[0002] Ignition of explosive objects such as firecrackers, fireworks, and detonators at close range poses a certain degree of danger. By introducing combustion-aiding materials and using low-energy lasers (such as those emitted by commercially available low-energy laser pointers used in teaching) at intervals of a certain distance for a short period (measured in seconds) to induce explosions or combustion of these objects, the safety of setting off such dangerous items can be significantly improved. Such combustion-aiding materials are also called laser-assisted combustion materials. Unfortunately, there are currently few reports on simple, easy-to-manufacture, and relatively inexpensive laser-assisted combustion materials, which urgently need to be developed. Summary of the Invention
[0003] Based on the above-mentioned technical problems, this invention provides a low-energy laser combustion accelerant and a safe ignition method. It can ignite a flammable material under low-energy laser irradiation at a certain distance at a relatively low ambient temperature, thus improving the safety of explosive ignition. Furthermore, the resulting low-energy laser combustion accelerant can also be used in performances, magic shows, celebrations, and other activities. The combustion accelerant described in this invention is simple and easy to manufacture, without complicated procedures or harsh conditions, and can be scaled up for industrialization. In addition, the combustion accelerant is relatively inexpensive and suitable for widespread application.
[0004] The present invention proposes a low-energy laser combustion aid, the raw materials of which, by weight percentage, include: 1-5 wt% phosphorus-containing ligands, 3-8 wt% sulfur-containing ligands, 1-3 wt% nickel salt, 1-5 wt% accelerator, and the balance being organic solvent.
[0005] In this invention, a nickel thiol complex is formed in the combustion aid composed of the above-mentioned raw materials, which can promote the conversion of light energy into heat energy, thereby causing the temperature to rise and ignite the material to be burned.
[0006] Preferably, the phosphorus-containing ligand is at least one selected from triphenylphosphine, tri(cyclohexyl)phosphine, trioctylphosphine, tri(o-tolyl)phosphine, tri(2-furanyl)phosphine, benzyl diphenylphosphine, diphenyl-n-propylphosphine, diphenyl-2-pyridinylphosphine, 1,2-bis(diphenylphosphine)ethane, 1,3-bis(diphenylphosphine)propane, or 1,4-bis(diphenylphosphine)butane.
[0007] Preferably, the sulfur-containing ligand is at least one of adamantane mercaptan, p-fluorobenzyl mercaptan, phenylethyl mercaptan, 1-propanethiol, 1-hexanethiol, p-tert-butylbenzyl mercaptan, 1,2-benzenediol or tert-butylbenzyl mercaptan.
[0008] Preferably, the nickel salt is at least one of nickel acetate, nickel chloride, nickel bromide, nickel nitrate, or nickel acetylacetonate.
[0009] Preferably, the accelerator is at least one selected from sodium hydroxide, sodium carbonate, sodium borohydride, sodium cyanoborohydride, or potassium hydroxide.
[0010] Preferably, the organic solvent is at least one of tetrahydrofuran, 1,4-dioxane, acetone, N-methylpyrrolidone, dichloromethane, or chloroform.
[0011] The present invention also proposes a method for preparing the above-mentioned low-energy laser ignition aid, comprising: dissolving a phosphorus-containing ligand in a portion of an organic solvent, then adding a nickel salt and stirring until homogeneous, then adding a sulfur-containing ligand and an accelerator dissolved in the remaining organic solvent, stirring until homogeneous, and centrifuging, the resulting centrifuged liquid being the low-energy laser ignition aid.
[0012] The present invention also proposes a safe ignition method, comprising: immersing the material to be burned in the above-mentioned combustion accelerant or the combustion accelerant prepared by the above-mentioned preparation method, removing it and air-drying it to obtain a low-energy laser-induced combustion material; irradiating the low-energy laser-induced combustion material with a laser emitting device to ignite the material to be burned.
[0013] Preferably, the material to be ignited includes firecrackers, fireworks, or detonators.
[0014] Preferably, the laser wavelength is 500-600nm and the power is 1-5W / cm². 2 .
[0015] The beneficial effects of this invention are as follows:
[0016] (1) The combustion aid described in this invention has a significant combustion-supporting effect. Under low-energy laser irradiation, it can support the combustion of the material at a certain distance at a relatively low ambient temperature. It can be used for the safe ignition of explosives and has the advantages of low operational risk and good ignition reliability.
[0017] (2) The combustion improver described in this invention is simple to prepare and transport, safe to operate, and requires a small amount to be added. Attached Figure Description
[0018] Figure 1 The UV-Vis absorption spectrum of the combustion improver described in Example 1 of this invention;
[0019] Figure 2 This is a photograph of the actual product after combustion has been aided by the combustion accelerator described in Embodiment 1 of the present invention. Detailed Implementation
[0020] The present invention will now be described in detail through specific embodiments. However, these embodiments are clearly provided for illustrative purposes and are not intended to limit the scope of the present invention.
[0021] Example 1
[0022] This embodiment proposes a low-energy laser combustion enhancer, the raw materials of which include: 25.6 mg triphenylphosphine, 41.9 mg adamantane mercaptan, 15.9 mg nickel acetate, 25.8 mg sodium hydroxide, and 760 μL tetrahydrofuran.
[0023] The preparation methods of the above-mentioned low-energy laser combustion accelerators include:
[0024] Dissolve 25.6 mg of triphenylphosphine in 60 μL of tetrahydrofuran, then add 15.9 mg of nickel acetate and stir until well mixed. Next, add 41.9 mg of adamantane thiol and 25.8 mg of sodium hydroxide dissolved in 700 μL of tetrahydrofuran, stir until well mixed, and centrifuge. The resulting centrifuged liquid is the low-energy laser combustion aid.
[0025] The UV-Vis absorption spectrum of the aforementioned low-energy laser combustion accelerator is shown below. Figure 1 As shown, refer to Figure 1 It is known that nickel thiol complexes are formed, which are the main effective components of combustion improvers.
[0026] Example 2
[0027] This embodiment proposes a low-energy laser combustion enhancer, the raw materials of which include: 25.6 mg of tris(cyclohexyl)phosphine, 41.9 mg of adamantane mercaptan, 15.9 mg of nickel chloride, 25.8 mg of sodium hydroxide, and 760 μL of tetrahydrofuran.
[0028] The preparation methods of the above-mentioned low-energy laser combustion accelerators include:
[0029] Dissolve 25.6 mg of tri(cyclohexyl)phosphine in 60 μL of tetrahydrofuran, then add 15.9 mg of nickel chloride and stir until well mixed. Next, add 41.9 mg of adamantane thiol and 25.8 mg of sodium hydroxide dissolved in 700 μL of tetrahydrofuran, stir until well mixed, and centrifuge. The resulting centrifuged liquid is the low-energy laser combustion aid.
[0030] Example 3
[0031] This embodiment proposes a low-energy laser combustion enhancer, the raw materials of which include: 25.6 mg triphenylphosphine, 41.9 mg p-fluorobenzenethiol, 15.9 mg nickel acetate, 25.8 mg sodium borohydride, and 760 μL tetrahydrofuran.
[0032] The preparation methods of the above-mentioned low-energy laser combustion accelerators include:
[0033] 25.6 mg of triphenylphosphine was dissolved in 60 μL of tetrahydrofuran, and then 15.9 mg of nickel acetate was added and stirred until well mixed. Next, 41.9 mg of p-fluorobenzenethiol and 25.8 mg of sodium borohydride were dissolved in 700 μL of tetrahydrofuran. After stirring and mixing, the mixture was centrifuged, and the resulting centrifuged liquid was the low-energy laser combustion aid.
[0034] Example 4
[0035] This embodiment proposes a low-energy laser combustion enhancer, the raw materials of which include: 25.6 mg of 1,2-bis(diphenylphosphine)ethane, 41.9 mg of p-tert-butylbenzenethiol, 15.9 mg of nickel nitrate, 25.8 mg of sodium cyanoborohydride, and 760 μL of acetone.
[0036] The preparation methods of the above-mentioned low-energy laser combustion accelerators include:
[0037] Dissolve 25.6 mg of 1,2-bis(diphenylphosphine)ethane in 60 μL of acetone, then add 15.9 mg of nickel nitrate and stir until well mixed. Next, add 41.9 mg of p-tert-butylbenzyl mercaptan and 25.8 mg of sodium cyanoborohydride dissolved in 700 μL of acetone, stir until well mixed, and centrifuge. The resulting centrifuged liquid is the low-energy laser combustion aid.
[0038] Example 5
[0039] This embodiment proposes a low-energy laser combustion enhancer, the raw materials of which include: 35.2 mg triphenylphosphine, 25.3 mg adamantane mercaptan, 20.6 mg nickel acetate, 13.4 mg sodium hydroxide, and 760 μL tetrahydrofuran.
[0040] The preparation methods of the above-mentioned low-energy laser combustion accelerators include:
[0041] 35.2 mg of triphenylphosphine was dissolved in 60 μL of tetrahydrofuran, and then 20.6 mg of nickel acetate was added and stirred until well mixed. Next, 25.3 mg of adamantane thiol and 13.4 mg of sodium hydroxide were dissolved in 700 μL of tetrahydrofuran. After stirring and mixing, the mixture was centrifuged, and the resulting centrifuged liquid was the low-energy laser combustion aid.
[0042] Example 6
[0043] This embodiment proposes a low-energy laser combustion enhancer, the raw materials of which include: 13.8 mg triphenylphosphine, 60.4 mg adamantane mercaptan, 10.2 mg nickel acetate, 39.2 mg sodium hydroxide, and 760 μL tetrahydrofuran.
[0044] The preparation methods of the above-mentioned low-energy laser combustion accelerators include:
[0045] Dissolve 13.8 mg of triphenylphosphine in 60 μL of tetrahydrofuran, then add 10.2 mg of nickel acetate and stir until well mixed. Next, add 60.4 mg of adamantane thiol and 39.2 mg of sodium hydroxide dissolved in 700 μL of tetrahydrofuran, stir until well mixed, and centrifuge. The resulting centrifuged liquid is the low-energy laser combustion aid.
[0046] Comparative Example 1
[0047] This comparative example presents a low-energy laser combustion enhancer, the raw materials of which include: 25.6 mg triphenylphosphine, 15.9 mg nickel acetate, 25.8 mg sodium hydroxide, and 760 μL tetrahydrofuran.
[0048] The preparation methods of the above-mentioned low-energy laser combustion accelerators include:
[0049] Dissolve 25.6 mg of triphenylphosphine in 60 μL of tetrahydrofuran, then add 15.9 mg of nickel acetate and stir until well mixed. Next, add 25.8 mg of sodium hydroxide dissolved in 700 μL of tetrahydrofuran, stir until well mixed, and centrifuge. The resulting centrifuged liquid is the low-energy laser combustion aid.
[0050] Comparative Example 2
[0051] This comparative example presents a low-energy laser combustion enhancer, the raw materials of which include: 41.9 mg of adamantane thiol, 15.9 mg of nickel acetate, 25.8 mg of sodium hydroxide, and 760 μL of tetrahydrofuran.
[0052] The preparation methods of the above-mentioned low-energy laser combustion accelerators include:
[0053] 15.9 mg of nickel acetate was dissolved in 60 μL of tetrahydrofuran. Then, 41.9 mg of adamantane thiol and 25.8 mg of sodium hydroxide were added and dissolved in 700 μL of tetrahydrofuran. After stirring and mixing, the mixture was centrifuged. The resulting centrifuged liquid was the low-energy laser combustion aid.
[0054] Comparative Example 3
[0055] This comparative example presents a low-energy laser combustion enhancer, the raw materials of which include: 25.6 mg triphenylphosphine, 41.9 mg adamantane mercaptan, 15.9 mg magnesium acetate, 25.8 mg sodium hydroxide, and 760 μL tetrahydrofuran.
[0056] The preparation methods of the above-mentioned low-energy laser combustion accelerators include:
[0057] Dissolve 25.6 mg of triphenylphosphine in 60 μL of tetrahydrofuran, then add 15.9 mg of magnesium acetate and stir until well mixed. Next, add 41.9 mg of adamantane thiol and 25.8 mg of sodium hydroxide dissolved in 700 μL of tetrahydrofuran, stir until well mixed, and centrifuge. The resulting centrifuged liquid is the low-energy laser combustion aid.
[0058] Take 20 μL of the combustion accelerator described in the examples or comparative examples, immerse the match head of a matchstick of the same type into the combustion accelerator, and air dry them to obtain low-energy laser combustion materials.
[0059] A fully charged green laser pointer, intended for use in meetings and teaching, emitted laser light at a distance of 33 cm (approximately 1 foot). Under conditions of an ambient temperature of 5°C, the low-energy laser-induced combustion material prepared in Example 1 was ignited within 3 seconds. (Refer to...) Figure 2 As shown, a match head of the same model could not be lit within 10 seconds under the same conditions.
[0060] The ignition times of the low-energy laser-induced combustion materials prepared in the above embodiments and comparative examples are shown in Table 1 below:
[0061] Table 1 Ignition time of low-energy laser combustion materials prepared in the examples and comparative examples.
[0062] Ignition time (s) Example 1 3 Example 2 5 Example 3 4 Example 4 6 Example 5 4 Example 6 5 Comparative Example 1 12 Comparative Example 2 8 Comparative Example 3 ＞15
[0063] As shown in Table 1 above, the present invention can ignite explosives at a certain distance under relatively low ambient temperatures using low-energy lasers, thereby improving the safety of ignition.
[0064] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A low-energy laser fuel improver, characterized by, The raw materials include, by weight percentage, 1-5 wt% phosphorus-containing ligand, 3-8 wt% sulfur-containing ligand, 1-3 wt% metal nickel salt, 1-5 wt% promoter, and the rest organic solvent.
2. The low-level laser fuel improver according to claim 1, wherein The phosphorus-containing ligand is at least one of triphenylphosphine, tris(cyclohexyl)phosphine, trioctylphosphine, tri(o-tolyl)phosphine, tris(2-furyl)phosphine, phenylmethyl diphenylphosphine, diphenyl-n-propylphosphine, diphenyl-2-pyridylphosphine, 1,2-bis(diphenylphosphino)ethane, 1,3-bis(diphenylphosphino)propane, or 1,4-bis(diphenylphosphino)butane.
3. The low-level laser combustion improver according to claim 1 or 2, wherein The sulfur-containing ligand is at least one of adamantane thiol, p-fluorobenzene thiol, phenyl ethyl thiol, 1-propanethiol, 1-hexanethiol, p-tert-butyl benzene thiol, 1,2-benzene dithiol, or t-butyl benzyl thiol.
4. The low-level laser fuel improver according to any one of claims 1 to 3, wherein The metal nickel salt is at least one of nickel acetate, nickel chloride, nickel bromide, nickel nitrate, or nickel acetylacetone.
5. The low-level laser fuel improver according to any one of claims 1 to 4, wherein The promoter is at least one of sodium hydroxide, sodium carbonate, sodium borohydride, sodium cyanoborohydride, or potassium hydroxide.
6. The low-level laser fuel improver according to any one of claims 1 to 5, wherein The organic solvent is at least one of tetrahydrofuran, 1,4-dioxane, acetone, N-methyl pyrrolidone, dichloromethane, or trichloromethane.
7. A method of producing the low-energy laser fuel improver according to any one of claims 1 to 6, characterized by, The method comprises: The phosphorus-containing ligand is dissolved in part of the organic solvent, and the metal nickel salt is added and stirred to mix, followed by adding the sulfur-containing ligand and the promoter dissolved in the rest of the organic solvent, stirring to mix, and centrifuging to obtain the combustion improver for low-energy laser ignition.
8. A method of safe ignition, characterized in that The method comprises: The combustible is immersed in the combustion improver of any one of claims 1-6 or prepared by the preparation method of claim 7, and is taken out and air-dried to obtain a low-energy laser combustible; and the low-energy laser combustible is irradiated by a laser emitting device to ignite the combustible.
9. The method of claim 8, wherein the safety pilot is a function of the temperature of the fuel cell stack. The combustible includes firecrackers, fireworks, or detonators. The combustible includes firecrackers, fireworks, or detonators.
10. The safety pilot method according to claim 8 or 9, characterized in that, The laser wavelength is 500-600 nm, and the power is 1-5 W / cm 2 .