CN-122010651-A - Energetic material for gas explosion energetic electronic ignition module

Abstract

The application relates to the technical field of gas explosion, and particularly discloses an energetic material for a gas explosion energetic electronic ignition module. The energetic material for the gas explosion energetic electronic ignition module comprises the following raw materials of Al powder, ni powder, a compound oxidant, a binder and liquid ethane, wherein the compound oxidant is a compound of nano molybdenum trioxide and polytetrafluoroethylene. The energetic material obtained by the application is integrated in the ignition resistor of the energetic electronic ignition module, so that the function of directly igniting the primary explosive without ignition charge is realized, potential safety hazards caused by workers in operation are avoided, the ignition process is not easy to be influenced by environmental factors such as temperature, humidity and the like, and the fluxion and the safety are improved. The triggering success rate of the energy-containing electronic ignition module is 100%, the response threshold and the ignition delay time are 4000s and 19.00ms respectively, the triggering success rate and the response speed of the electronic ignition module are improved, the combustion heat reaches 9912KJ/kg, and the energy-containing electronic ignition module has higher combustion performance.

Inventors

• ZHANG YINGHAO
• WU SHAOCHEN
• SUN SHENGYAO
• MA WENXIANG
• ZHANG LIMING
• QIANG ZHAOQING
• CHEN LILI

Assignees

• 北京煋邦数码科技有限公司

Dates

Publication Date

20260512

Application Date

20260307

Claims (8)

1. 1. The energetic material for the gas explosion energetic electronic ignition module is characterized by comprising, by mass, 15-25% of Al powder, 5-15% of Ni powder, 60-80% of a compound oxidant, 0.6-0.8% of a binder and 0.2-0.5% of liquid ethane; the compound oxidant is a compound of nano molybdenum trioxide and micron or submicron polytetrafluoroethylene.
2. 2. The energetic material for a gas explosion energetic electronic ignition module according to claim 1, wherein the particle size of the Al powder and the Ni powder is 40-60nm.
3. 3. The energetic material for a gas explosion energetic electronic ignition module according to claim 1, wherein the mass ratio of polytetrafluoroethylene to nano molybdenum trioxide is 1 (4-6).
4. 4. The energetic material for the air explosion energetic electronic ignition module according to claim 1 is characterized in that the nano molybdenum trioxide is prepared by modification, and specifically comprises the following steps of adding tridecafluorooctyl trimethoxy silane into absolute ethyl alcohol to obtain a mixed solution, uniformly spraying the mixed solution on the surface of the dried nano molybdenum trioxide, stirring for 10min at the speed of 500-700r/min, and drying for 1h at 80 ℃ to obtain the modified nano molybdenum trioxide, wherein the volume ratio of the tridecafluorooctyl trimethoxy silane to the absolute ethyl alcohol is 1 (9-11).
5. 5. The energetic material for a gas explosion energetic electronic ignition module according to claim 4, wherein the addition amount of tridecafluorooctyl trimethoxy silane is 0.5-1% of the mass of nano molybdenum trioxide.
6. 6. The energetic material for the gas explosion energetic electronic ignition module according to claim 4, wherein the specific drying conditions of the nano molybdenum trioxide are that the temperature is 100 ℃ plus or minus 5 ℃ and the moisture content of the nano molybdenum trioxide is less than or equal to 0.03 percent after vacuum drying under the conditions of minus 0.08 to minus 0.09 MPa.
7. 7. The energetic material for a gas explosion energetic electronic ignition module according to claim 1, wherein the binder is polyvinylidene fluoride.
8. 8. A method for preparing the energetic material for the gas explosion energetic electronic ignition module according to any one of claims 1 to 7, which is characterized by comprising the following steps of uniformly mixing Al powder and Ni powder, adding other raw materials, pressing into a biscuit under 400MPa, heating to 510-560 ℃ in a vacuum environment at a heating rate of 10 ℃ per min for sintering, preserving heat for 1h, and cooling along with a furnace to obtain the energetic material for the gas explosion energetic electronic ignition module.

Description

Energetic material for gas explosion energetic electronic ignition module Technical Field The application relates to the technical field of gas explosion, in particular to an energetic material for a gas explosion energetic electronic ignition module. Background The gas blasting is a new blasting technique, which uses some special gases as blasting media, and the high-pressure gases are released into holes or cracks to break or remove by utilizing shock waves generated by the rapid release of the high-pressure gases, so as to achieve the purpose of breaking rocks and soil. Compared with the traditional explosive blasting technology, the gas blasting technology has a plurality of unique advantages, such as safety, green environmental protection, high efficiency, flexibility and the like. The conventional ignition element of the electronic ignition module often adopts lead azide, which has a problem that the ignition agent is easily affected by environmental factors such as temperature, humidity and the like, so that the sensitivity of the ignition agent is changed, and the change can cause risks such as explosion rejection or accidental explosion during operation. Therefore, there is a need for developing an energetic material with less influence of environmental factors such as temperature and humidity on the ignition process and less potential safety hazard in the production process. Disclosure of Invention In order to reduce the influence of environmental factors such as temperature, humidity and the like on the ignition process, the potential safety hazard in the production process is obviously reduced, and the triggering success rate and the response speed of the gas explosion energetic electronic ignition module are improved, the application provides an energetic material for the gas explosion energetic electronic ignition module. In a first aspect, the application provides an energetic material for a gas explosion energetic electronic ignition module, which adopts the following technical scheme: The energetic material for the gas explosion energetic electronic ignition module comprises, by mass, 15-25% of Al powder, 5-15% of Ni powder, 60-80% of a metal oxidant, 0.6-0.8% of a binder and 0.2-0.5% of liquid ethane. By adopting the technical scheme, the Al powder and the Ni powder are selected to be compounded to be used as the metal powder, the Al powder is used as the high-activity metal fuel to bear the effect of main energy release, a compact Al 2O3 passivation film is easy to form on the surface of a single Al powder, the Ni powder is added to form an Al-Ni eutectic alloy when the Al powder contacts with the Al powder, the eutectic reaction can melt to destroy the Al 2O3 passivation film on the surface of the Al powder, the fresh active surface of the Al powder is exposed, the ignition difficulty is greatly reduced, the Ni powder has a catalytic effect on the oxidation of the Al powder, and the combustion speed, the explosion speed and the energy release efficiency of the energetic material can be improved. The Al powder and the Ni powder are mixed in inert liquid ethane, so that the explosion of the metal powder can be prevented. And a trace amount of binder is added for granulation, so that the charge density and mechanical strength can be improved. The compound oxidant is a compound of nano molybdenum trioxide and micron or submicron polytetrafluoroethylene. The nano molybdenum trioxide is added as a main oxidant, can decompose and release oxygen and nano Al powder to generate severe aluminothermic reaction under the high temperature condition, is far higher than the reaction exothermic quantity of the Al powder and ammonium perchlorate, and can rapidly raise the system temperature to more than 2000 ℃ and enhance the gas explosion pressure peak value. In addition, the nano molybdenum trioxide and Al powder can generate an intermediate product Al 2(MoO4)3 at the initial stage of the reaction, the product can reduce the damage energy barrier of an oxide film on the surface of the Al powder, so that an active aluminum core of the Al powder can participate in the reaction more quickly, and meanwhile, a metal molybdenum simple substance generated by the reaction can form Ni-Mo alloy with Ni powder, so that the catalytic effect on the oxidation of the Al powder is further enhanced, and the ignition delay time is shortened. Polytetrafluoroethylene is used as an auxiliary oxidant to be added, fluorine free radicals can be released in advance to trigger the pre-reaction of Al powder, an initial heat source is provided for the aluminothermic reaction of nano molybdenum trioxide, the overall ignition threshold of a system is reduced, polytetrafluoroethylene is responsible for rapid oxidation in a low-temperature section, nano molybdenum trioxide is responsible for continuous heat release in a high-temperature section, the problem of ignition delay or reaction interruption existing in a single oxidant is eff