Mistaken-combustion-preventing pyrophoric powder composition as well as preparation process and application thereof

Abstract

The invention discloses an ignition powder composition capable of preventing mistaken combustion and a preparation method and application thereof.The ignition powder composition capable of preventing mistaken combustion is prepared from, by weight, 30-75 parts of metal fuel particles, 8-35 parts of copper oxide, 5-25 parts of ammonium phosphate and 3-18 parts of coating agent.The application of the ignition powder composition capable of preventing mistaken combustion comprises the following steps that 1, the ignition powder composition capable of preventing mistaken combustion is prepared from, by weight, 30-75 parts of metal fuel particles, 8-35 parts of copper oxide, 5-25 parts of ammonium phosphate and 3-18 parts of coating agent; and at least one of an electric igniter or a chemical activating agent needs to be matched for use. The coated magnesium powder is used as metal fuel particles, and components such as copper oxide and ammonium phosphate are matched with the coated magnesium powder to jointly perform oxidation-reduction reaction; the pyrophoric powder composition can be ignited only by being matched with an electric igniter or a chemical activating agent, mistaken combustion caused by external factors or improper manual operation is avoided, and the pyrophoric powder composition is particularly suitable for occasions with high safety requirements such as industrial high-temperature welding ignition devices, petroleum drilling engineering or firework delayed ignition devices.

Description

Technical Field

[0001] The present invention relates to the technical field of ignition powder, in particular to an anti-accidental ignition ignition powder composition, a preparation method and application thereof. Background Art

[0002] Pyrotechnic powder is a powdered substance used to initiate combustion or chemical reactions. It is usually composed of multiple chemical components, such as oxidizers and metal fuel particles. It is mainly used to provide an ignition source to stimulate the combustion or reaction of other fuels or chemicals. It is widely used in welding, industrial production, civil fields, military and emergency, fireworks and blasting and other fields.

[0003] Traditional ignition powder has higher sensitivity usually, and it is easy to be ignited by common fire source, which brings larger potential safety hazard in storage, transportation and use. For example, in industrial production, ignition powder may be ignited due to unexpected situations such as static electricity, friction or impact, thereby causing serious safety accidents. In addition, the stability of existing ignition powder in different environmental conditions (such as high temperature, humidity) is poor, which easily causes ignition failure or misfire, which not only affects the production efficiency of ignition powder, but also may pose a threat to the safety of operating personnel. Therefore, a kind of anti-misfire ignition powder composition and its preparation method and application have been invented for the deficiency of ignition powder in safety and stability. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an anti-accidental ignition ignition powder composition and a preparation method and application thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The invention discloses an anti-accidental ignition ignition powder composition, which is composed of metal fuel particles, copper oxide, ammonium phosphate salt and a coating agent, and comprises the following components in parts by weight: 30 to 75 parts of metal fuel particles, 8 to 35 parts of copper oxide, 5 to 25 parts of ammonium phosphate salt and 3 to 18 parts of coating agent.

[0007] The invention comprises the following components in parts by weight: 35 to 70 parts of metal fuel particles, 10 to 30 parts of copper oxide, 8 to 22 parts of ammonium phosphate, and 4 to 16 parts of coating agent.

[0008] The invention comprises the following components in parts by weight: 45 to 60 parts of metal fuel particles, 15 to 25 parts of copper oxide, 10 to 18 parts of ammonium phosphate, and 5 to 12 parts of coating agent.

[0009] Wherein, the metal fuel particles are at least one of magnesium powder, aluminum powder or titanium powder.

[0010] The preparation method of the anti-accidental ignition ignition powder composition comprises the following steps:

[0011] S1. Raw material pretreatment: Grind copper oxide and ammonium phosphate separately, sieve and set aside; mix the metal fuel particles with the coating agent, stir evenly and then dry to form coated metal fuel particles;

[0012] S2. Mixing and granulation: Mix the pretreated copper oxide, ammonium phosphate and coated metal fuel particles in proportion, add an appropriate amount of ethanol solution, and stir evenly; pass the mixture through a sieve to granulate the particle size to be between 0.5 and 1.0 mm;

[0013] S3. Drying and packaging: Place the granulated product in an oven to ensure that the moisture content is less than 1%. After packaging, store it in a dry and ventilated environment.

[0014] Wherein, the coating agent is selected from one or more of polyvinyl alcohol (PVA), nitrocellulose (NC), and silane coupling agent.

[0015] Wherein, the coating agent is polyvinyl alcohol (PVA).

[0016] The application of the anti-misfire ignition powder composition in industrial high-temperature welding ignition devices, oil drilling projects or fireworks delayed ignition devices requires the use of at least one of an electric igniter or a chemical activator.

[0017] The electric igniter adopts a working voltage of 12 to 24V and an ignition current of 1 to 3A.

[0018] Wherein: the chemical activator contains a fluorine surfactant solution.

[0019] Metal fuel particles, as the primary combustible material, provide high energy density and combustion characteristics, ensuring that the ignition powder produces a flame upon ignition. Magnesium powder, a highly efficient reducing agent with high calorific value and rapid combustion, is a key fuel component in the ignition powder. However, magnesium powder has a flash point of approximately 500°C and can spontaneously combust and explode when exposed to moisture, posing safety risks during storage and processing. Coating the magnesium powder isolates it from the external environment, raising its initial reaction temperature and reducing the risk of accidental ignition, thereby enhancing its safety during storage and use.

[0020] Copper oxide, as an oxidant, can release oxygen during the combustion process, forming a good oxidation reaction system with metal fuel particles and promoting the combustion reaction.

[0021] As a flame retardant, ammonium phosphate has good chemical stability and thermal stability. It is stable at room temperature and decomposes at high temperature to produce ammonia and phosphate. These substances can react with free radicals in the flame, interrupting the chain reaction of combustion, thereby inhibiting the spread of flame. Ammonium phosphate also has flame retardant and fire extinguishing properties. It can produce a viscous mixture of phosphoric acid and metaphosphoric acid when the ignition powder burns. The viscous substance can adhere to the surface of the fuel to prevent premature combustion and misfire, and can also play a stabilizing role in the combustion process.

[0022] The reaction mechanism is as follows:

[0023] 1. Thermal decomposition of ammonium phosphate: Ammonium phosphate decomposes at high temperatures, releasing ammonia (NH3) and phosphoric acid (H3PO4);

[0024]

[0025] 2. Phosphoric acid further dehydrates at high temperatures to form metaphosphoric acid (HPO3) and water (H2O);

[0026]

[0027] 3. Reaction of ammonia with free radicals in the flame: Ammonia reacts with free radicals (such as H, OH and O) in the flame, interrupting the chain reaction of combustion.

[0028] NH3+H→NH2+H2

[0029] NH2+H→NH+H2

[0030] NH+H→N+H2

[0031] A coating agent is a chemical substance or composite material used to form a protective or functional coating on the surface of particles, powders or materials. It imparts specific properties to the coated material through physical coating or chemical modification, while isolating the material from direct contact with the external environment to improve stability, safety and functionality.

[0032] Polyvinyl alcohol, as a binder and coating agent, has good film-forming and adhesive properties. It can not only evenly bond the various raw materials of the ignition powder together to form a stable particle structure, but also isolate the active ingredients in the ignition powder (such as metal fuel particles, copper oxide, etc.) from contact with oxygen and moisture, preventing them from oxidation or moisture absorption; in addition, the decomposition and carbonization of polyvinyl alcohol during the combustion process can prevent the ignition powder from igniting prematurely.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] By encapsulating magnesium powder as metal fuel particles, components such as copper oxide and ammonium phosphate cooperate with the encapsulated magnesium powder to jointly exert an oxidation-reduction reaction. The reasonable proportion and synergistic effect of each component improve the safety and stability of the ignition powder composition; the ignition powder composition needs to be used with an electric igniter or a chemical activator to be ignited, avoiding accidental ignition caused by external factors (such as static electricity, friction, impact, etc.) or improper human operation, greatly improving the safety of the ignition powder composition during storage, transportation and use, and is particularly suitable for occasions with high safety requirements such as industrial high-temperature welding ignition devices, oil drilling projects or fireworks delayed ignition devices. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to specific examples. It should be understood that the following examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0036] 1. Determination method

[0037] 1. Minimum ignition energy

[0038] Minimum ignition energy refers to the minimum energy value required to successfully ignite the fuel by providing energy through an ignition device (such as an electric spark or hot wire).

[0039] Method: Use an ignition energy tester, set its initial energy value, gradually increase the ignition energy until the sample ignites, and record the critical value.

[0040] 2. Combustion stability

[0041] Combustion stability refers to the ability to maintain continuous, uniform combustion without being disturbed by external factors during the combustion process. It is an important indicator for evaluating fuel performance and reliability.

[0042] Method: The parameters of the flame when the sample is burning are recorded by sensors.

[0043] 3. Anti-interference ability

[0044] Interference resistance refers to the ability of a fuel to resist external interference factors and maintain normal combustion during combustion. It reflects the robustness and reliability of the combustion process and is an important indicator for evaluating the performance of combustion systems under complex environmental conditions.

[0045] Methods: A wind tunnel was used to simulate external disturbances. The samples were ignited under specific disturbance conditions and the duration of combustion was recorded.

[0046] 4. Combustion performance

[0047] Combustion performance refers to the amount of heat released or combustion efficiency during complete combustion. It reflects the sample's energy release capacity and combustion effect in practical applications and is a key indicator for evaluating sample quality.

[0048] Methods: The sample was ignited in a standard combustion device, and the temperature and heat change data were collected synchronously using a calorimeter.

[0049] 5. Risk of spontaneous combustion

[0050] Spontaneous combustion risk refers to the possibility that a fuel may spontaneously combust due to its own chemical reactions or the influence of external environmental factors (such as temperature, pressure, and oxygen concentration) in the absence of an external ignition source (such as an open flame or spark). It reflects the potential danger of spontaneous combustion of a fuel during storage, transportation, or use.

[0051] Method: Heat the sample to a specific temperature, use an autoignition point tester to monitor whether the sample spontaneously combusts or violently decomposes, and record the critical temperature. 2. Specific embodiments

[0053] Example 1:

[0054] A fire-prevention powder composition for preventing accidental ignition comprises the following components in parts by weight: 45 parts of coated magnesium powder, 15 parts of copper oxide, 10 parts of ammonium phosphate, and 5 parts of polyvinyl alcohol.

[0055] S1, raw material pretreatment: 15 parts of copper oxide and 10 parts of ammonium phosphate were ground separately, sieved and set aside; magnesium powder was mixed with 5 parts of polyvinyl alcohol solution, stirred and dried to form 45 parts of coated magnesium powder;

[0056] S2, mixing and granulation: pre-treated copper oxide, ammonium phosphate and coated magnesium powder are mixed in proportion, an appropriate amount of ethanol solution is added, and stirred evenly; the mixture is granulated through a sieve to control the particle size between 0.5 and 1.0 mm;

[0057] S3. Drying and packaging: Place the granulated product in an oven to ensure that the moisture content is less than 1%. After packaging, store it in a dry and ventilated environment.

[0058] Example 2:

[0059] A fire-prevention powder composition for preventing accidental ignition comprises the following components in parts by weight: 60 parts of coated magnesium powder, 25 parts of copper oxide, 15 parts of ammonium phosphate, and 10 parts of polyvinyl alcohol.

[0060] S1, raw material pretreatment: 25 parts of copper oxide and 15 parts of ammonium phosphate were ground separately, sieved and set aside; magnesium powder was mixed with 10 parts of polyvinyl alcohol solution, stirred and dried to form 60 parts of coated magnesium powder;

[0061] S2, mixing and granulation: pre-treated copper oxide, ammonium phosphate and coated magnesium powder are mixed in proportion, an appropriate amount of ethanol solution is added, and stirred evenly; the mixture is granulated through a sieve to control the particle size between 0.5 and 1.0 mm;

[0062] S3. Drying and packaging: Place the granulated product in an oven to ensure that the moisture content is less than 1%. After packaging, store it in a dry and ventilated environment.

[0063] Example 3:

[0064] A fire-prevention powder composition for preventing accidental ignition comprises the following components in parts by weight: 55 parts of coated magnesium powder, 20 parts of copper oxide, 12 parts of ammonium phosphate, and 8 parts of polyvinyl alcohol.

[0065] S1, raw material pretreatment: 20 parts of copper oxide and 12 parts of ammonium phosphate were ground separately, sieved and set aside; magnesium powder was mixed with 8 parts of polyvinyl alcohol solution, stirred and dried to form 55 parts of coated magnesium powder;

[0066] S2, mixing and granulation: pre-treated copper oxide, ammonium phosphate and coated magnesium powder are mixed in proportion, an appropriate amount of ethanol solution is added, and stirred evenly; the mixture is granulated through a sieve to control the particle size between 0.5 and 1.0 mm;

[0067] S3. Drying and packaging: Place the granulated product in an oven to ensure that the moisture content is less than 1%. After packaging, store it in a dry and ventilated environment.

[0068] Example 4:

[0069] A fire-prevention powder composition for preventing accidental ignition comprises the following components in parts by weight: 70 parts of coated magnesium powder, 30 parts of copper oxide, 20 parts of ammonium phosphate, and 15 parts of polyvinyl alcohol.

[0070] S1, raw material pretreatment: 30 parts of copper oxide and 20 parts of ammonium phosphate were ground separately, sieved and set aside; magnesium powder was mixed with 15 parts of polyvinyl alcohol solution, stirred and dried to form 70 parts of coated magnesium powder;

[0071] S2, mixing and granulation: pre-treated copper oxide, ammonium phosphate and coated magnesium powder are mixed in proportion, an appropriate amount of ethanol solution is added, and stirred evenly; the mixture is granulated through a sieve to control the particle size between 0.5 and 1.0 mm;

[0072] S3. Drying and packaging: Place the granulated product in an oven to ensure that the moisture content is less than 1%. After packaging, store it in a dry and ventilated environment.

[0073] Example 5:

[0074] A fire-prevention powder composition for preventing accidental ignition comprises the following components in parts by weight: 35 parts of coated magnesium powder, 10 parts of copper oxide, 8 parts of ammonium phosphate, and 3 parts of polyvinyl alcohol.

[0075] S1, raw material pretreatment: 10 parts of copper oxide and 8 parts of ammonium phosphate were ground separately, sieved and set aside; magnesium powder was mixed with 3 parts of polyvinyl alcohol solution, stirred and dried to form 35 parts of coated magnesium powder;

[0076] S2, mixing and granulation: pre-treated copper oxide, ammonium phosphate and coated magnesium powder are mixed in proportion, an appropriate amount of ethanol solution is added, and stirred evenly; the mixture is granulated through a sieve to control the particle size between 0.5 and 1.0 mm;

[0077] S3. Drying and packaging: Place the granulated product in an oven to ensure that the moisture content is less than 1%. After packaging, store it in a dry and ventilated environment.

[0078] Comparative Example 1:

[0079] The weight proportions of raw materials in this comparative example are the same as those in Example 1, except that no coating agent is added to the magnesium powder.

[0080] Comparative Example 2:

[0081] The preparation steps of this comparative example are the same as those of Example 1, except that no ammonium phosphate salt is added.

[0082] Comparative Example 3:

[0083] The preparation steps of this comparative example are the same as those of Example 1, except that copper oxide is not added.

[0084] Comparative Example 4:

[0085] The preparation steps of this comparative example are the same as those of Example 1, except that no magnesium powder is added.

[0086] 3. Measurement results

[0087] First, the present invention measured the minimum ignition energy, combustion stability, anti-interference ability, combustion performance, and safety of the ignition powder compositions prepared in Examples 1 to 5 and Comparative Examples 1 to 4. The measurement results are shown in Table 1.

[0088] Table 1 Test results of various properties of ignition powder composition

[0089]

[0090] According to Table 1, the minimum ignition energies of Examples 1 to 5 of the present invention are between 10 and 18 mJ, indicating that the ignition powder compositions prepared in Examples 1 to 5 require relatively high energy to ignite, which indicates that they are less sensitive to ignition sources and are not easily ignited by accidental ignition sources of small energy. However, the minimum ignition energies of Comparative Examples 1 to 2 are 25 and 20 mJ, respectively, and the minimum ignition energies are higher, indicating that they are more sensitive to ignition sources and are easily ignited by accidental ignition sources; while Comparative Examples 3 and 4 cannot be ignited, and there is no minimum ignition energy. Therefore, Examples 1 to 5 of the present invention require a higher minimum ignition energy, indicating that an electric igniter is required to provide sufficient energy for ignition, thereby effectively preventing accidental ignition accidents caused by small energy ignition sources.

[0091] In terms of combustion stability, the combustion stability values ​​of Examples 1 to 5 of the present invention are between 4.8 and 7.0 Hz, indicating that under normal storage and use conditions, the combustion process is stable and will not misfire or go out due to slight external disturbances; however, the combustion stability values ​​of Comparative Examples 1 to 2 are significantly higher than those of Examples 1 to 5, reaching 12.3 and 8.7 Hz, respectively, which indicates that the combustion process is unstable and easily affected by external factors, and there is a risk of misfire. Therefore, the combustion stability of Examples 1 to 5 of the present invention is good, and can only stably burn after being ignited by an electric igniter or a chemical activator, further proving that the ignition powder composition prepared in Examples 1 to 5 can effectively prevent misfire.

[0092] Compared with Comparative Examples 1 to 4, the anti-interference capabilities of Examples 1 to 5 of the present invention are significantly higher than those of Comparative Examples 1 to 5, which shows that in the presence of common interference factors such as electromagnetic interference, mechanical vibration, and sound, the ignition powder compositions obtained in Examples 1 to 5 are not easily mis-ignited. Therefore, the anti-interference capabilities of Examples 1 to 5 are strong, and even in complex environments, only by coordinating an electric igniter or a chemical activator can it be ensured that it is reliably ignited, effectively avoiding mis-ignition of the ignition powder composition.

[0093] In terms of combustion performance, the combustion performance values ​​of Examples 1 to 5 of the present invention are between 820 and 920 mJ / kg, which shows that Examples 1 to 5 have good combustion performance and can meet the ignition requirements. The combustion performance values ​​of Comparative Examples 1 to 2 are 680 and 790 mJ / kg, respectively. Although the combustion performance of Comparative Example 2 is relatively good, it is lower than that of Examples 1 to 5 as a whole; and the ignition powder compositions prepared in Comparative Examples 3 and 4 cannot burn and have no combustion performance. Therefore, the combustion performance of Examples 1 to 5 of the present invention is excellent, and under conditions requiring high ignition ability and stable combustion, only the use of an electric igniter or a chemical activator can stimulate their good combustion performance, further emphasizing the ability of the ignition powder compositions prepared in Examples 1 to 5 to prevent misfires.

[0094] Compared with Comparative Examples 1 to 4, the risk of spontaneous combustion in Examples 1 to 5 of the present invention is lower, indicating that under normal storage and use conditions, the risk of spontaneous combustion is extremely low. This shows that the ignition powder compositions prepared in Examples 1 to 5 can effectively prevent spontaneous combustion caused by environmental factors and must rely on electric igniters or chemical activators to ignite.

[0095] In summary, the ignition powder compositions prepared in Examples 1 to 5 require a higher minimum ignition energy and have good combustion stability, anti-interference ability and low spontaneous combustion risk, indicating that the ignition powder compositions prepared in Examples 1 to 5 must be ignited using an electric igniter or a chemical activator, thereby effectively preventing the occurrence of accidental ignition accidents.

[0096] Secondly, the present invention's anti-accidental ignition ignition powder composition requires an electric igniter or chemical activator to ignite. The electric igniter uses an operating voltage of 12 to 24V and an ignition current of 1 to 3A. 12 to 24V is within the safe voltage range. The low voltage reduces the generation of sparks, making it suitable for flammable and explosive environments and preventing accidental ignition of surrounding combustibles. Furthermore, the 1 to 3A current precisely controls the heating value of the resistance wire, quickly reaching the ignition point of the ignition powder composition while preventing overheating and damage to the components, thereby extending the service life.

[0097] The chemical activator contains a fluorine surfactant solution. The fluoride in the activator can form a complex with the metal fuel (such as magnesium powder) in the ignition powder composition to reduce the activation energy of the oxidation reaction, accelerate the initiation of the free radical chain reaction, and thus increase the combustion rate of the ignition powder composition; and after combustion, the fluorine surfactant mainly generates inert fluorinated gas, which can reduce the release of toxic residues compared with traditional activators.

[0098] The anti-accidental ignition ignition powder composition of the present invention has significant advantages in different application fields (industrial high-temperature welding ignition devices, oil drilling engineering and fireworks delayed ignition devices):

[0099] In the application of industrial high-temperature welding ignition devices, the anti-accidental ignition ignition powder composition can withstand the high-temperature welding environment and avoid accidental premature ignition due to heat conduction or electric sparks. During welding operations, there may be ignition materials or gases around. The anti-accidental ignition properties of the ignition powder composition can significantly reduce the risk of fire, thereby protecting the safety of operators and equipment.

[0100] Furthermore, the anti-accidental ignition ignition powder composition is used in conjunction with an electric igniter in an industrial high-temperature welding ignition device. The electric igniter is activated by a specific current or voltage to precisely control the ignition time and energy, ensuring that the welding ignition device is started as needed in a high-temperature environment, thereby preventing the ignition powder composition from accidentally igniting due to environmental heat radiation or mechanical vibration.

[0101] The anti-accidental ignition powder is combined with a chemical activator, which can be triggered by spraying or contact without relying on an electrical system. This method is suitable for welding sites with high temperature, high humidity or the presence of flammable dust. The ignition powder composition will only react when it comes into direct contact with the chemical activator. Even if the ignition powder composition is exposed to welding spatter or high temperature environment, it will not be accidentally activated, thereby reducing the risk of accidental ignition of the ignition powder composition.

[0102] In the application of oil drilling projects, anti-ignition ignition powder can avoid premature explosions caused by static electricity, friction or accidental heat sources in drilling environments containing flammable gases (such as methane), thereby ensuring the safety of underground operations.

[0103] Furthermore, the anti-accidental ignition powder composition is used in conjunction with an electric igniter in oil drilling projects. The electric igniter adopts a fully sealed explosion-proof structure and can be safely used in high-pressure and flammable gas environments underground, thereby avoiding electric sparks causing blowouts or explosions. The electric igniter can be remotely triggered by wireless signals, reducing the operation of operators in dangerous areas. This method is particularly suitable for deep-sea drilling or ultra-deep well operations.

[0104] In the application of fireworks delayed ignition devices, the anti-accidental ignition properties of the ignition powder composition can avoid accidental ignition caused by fluctuations in ambient temperature, humidity or mechanical vibration, ensure that the rhythm or effect of fireworks burning meets the design requirements, and reduce accidental explosion accidents caused by collision, static electricity or temperature changes during storage or transportation of fireworks.

[0105] Furthermore, when the anti-accidental ignition ignition powder composition is used in combination with an electric igniter in a fireworks delayed ignition device, the electric igniter can delay the fireworks ignition time through an electronic controller, and the operator can stay away from the ignition point, thereby avoiding the risks of traditional manual ignition; and the anti-accidental ignition ignition powder combined with a chemical activator is more suitable for outdoor or temporary fireworks performance scenes.

[0106] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0107] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the invention.

Claims

1. A composition for preventing accidental ignition of an ignition powder, characterized in that: The invention is composed of metal fuel particles, copper oxide, ammonium phosphate and coating agent, and includes the following components in parts by weight: 30-75 parts of metal fuel particles, 8-35 parts of copper oxide, 5-25 parts of ammonium phosphate and 3-18 parts of coating agent.

2. The anti-accidental ignition ignition powder composition according to claim 1, wherein: The invention comprises the following components in parts by weight: 35-70 parts of metal fuel particles, 10-30 parts of copper oxide, 8-22 parts of ammonium phosphate and 4-16 parts of coating agent.

3. The anti-accidental ignition ignition powder composition according to claim 1, wherein: The invention comprises the following components in parts by weight: 45-60 parts of metal fuel particles, 15-25 parts of copper oxide, 10-18 parts of ammonium phosphate and 5-12 parts of coating agent.

4. The anti-accidental ignition ignition powder composition according to claim 1, wherein: The metal fuel particles are at least one of magnesium powder, aluminum powder or titanium powder.

5. A method for preparing an anti-accidental ignition ignition powder composition, characterized in that: The steps include: S1. Raw material pretreatment: Grind copper oxide and ammonium phosphate separately, sieve and set aside; mix the metal fuel particles with the coating agent, stir evenly and then dry to form coated metal fuel particles; S2. Mixing and granulation: Mix the pretreated copper oxide, ammonium phosphate and coated metal fuel particles in proportion, add an appropriate amount of ethanol solution, and stir evenly; pass the mixture through a sieve to granulate the particle size to be between 0.5 and 1.0 mm; S3. Drying and packaging: Place the granulated product in an oven to ensure that the moisture content is less than 1%. After packaging, store it in a dry and ventilated environment.

6. The method for preparing the anti-accidental ignition ignition powder composition according to claim 5, wherein: In step S1, the coating agent is selected from one or more of polyvinyl alcohol (PVA), nitrocellulose (NC), and a silane coupling agent.

7. The method for preparing the anti-accidental ignition ignition powder composition according to claim 6, wherein: The coating agent is polyvinyl alcohol (PVA).

8. Use of the anti-accidental ignition ignition powder composition according to any one of claims 1 to 7 in industrial high-temperature welding ignition devices, oil drilling engineering or fireworks delayed ignition devices, characterized in that: It must be used with at least one of an electric igniter or a chemical activator.

9. The use of the anti-accidental ignition ignition powder composition according to claim 8, characterized in that: The electric igniter adopts a working voltage of 12 to 24V and an ignition current of 1 to 3A.

10. The use of the anti-accidental ignition ignition powder composition according to claim 8, characterized in that: The chemical activator contains a fluorine surfactant solution.

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