A method of making a material resistant to high impact

Abstract

The application discloses a preparation method of a strong-impact-resistant material. ‑ 7 The method comprises the following steps: placing a Si (111) base material plate on a sample table, reducing the air pressure in a vacuum cavity to 10 Pa by using a vacuum pump, injecting alcohol gas to saturate and adsorb the Si (111) base material plate, discharging the excess alcohol gas by opening the vacuum pump, and performing medium-low temperature composite heating on the Si (111) base material plate. The Si-H base material plate is formed with micro-pores by a drill bit, and is connected by an electric heating wire, and serves as an intermediate layer of a strong-impact-resistant system. The surface layer and the intermediate layer are respectively stainless steel protective plates. The bottom of the surface layer is plated with a Zn material film, and a battery is arranged at the bottom layer to supply power to an ejection device and the electric heating wire. When a strong impact is detected, the battery supplies power to the electric heating wire to preheat the Si-H base material plate, H+ is emitted and reacts with Zn to form H2. Once the surface layer of the stainless steel plate is impacted, sparks generated by the impact will ignite the H2, and the ejection device will be started.

Description

Technical Field

[0001] This invention belongs to the field of materials design technology, and relates to a material preparation method, particularly a method for preparing a material that resists strong impacts. Background Technology

[0002] Regulations in many countries require the installation of emergency protective equipment on certain civilian facilities. Since the impact of a strong collision is largely offset and / or absorbed by the impact-resistant material, it is crucial to ensure that the main body of the protected facility is not damaged, and repairs only require replacing the impact-resistant material. A common approach is to add buffer blocks to the protected system to reduce the damage to the impact barrier; however, the enormous impact force will still be transmitted to the main body of the protected system in some form. Simply increasing the hardness of the protective material has limited effectiveness, and the explosive-assisted protection commonly used in the military field is not suitable for civilian applications. Therefore, there is an urgent need to develop a new explosive method to offset the impact force more gently. The flammable and explosive properties of hydrogen in air have attracted the attention of researchers, leading to related vacuum preparation technologies and devices.

[0003] A vacuum chamber is a container that maintains an internal vacuum state. The fabrication of a vacuum chamber requires consideration of volume, material, and shape. Stainless steel is currently the primary structural material for ultra-high vacuum systems. It possesses excellent corrosion resistance, low outgassing rate, good weldability, low electrical and thermal conductivity, and the ability to operate at temperatures ranging from -270 to 900°C, making it widely used in high and ultra-high vacuum systems.

[0004] The materials used in vacuum engineering platforms include: the housing of vacuum equipment, vacuum gauges, various fixed, movable, and detachable mechanisms and components placed in vacuum containers, various sealing materials, and working substances for various vacuum acquisition methods, etc. The materials used in vacuum systems can be roughly divided into two categories: (1) Structural materials, which are the materials that constitute the main body of the vacuum system, separating the vacuum system from the atmosphere and bearing atmospheric pressure. These materials are mainly various metal and non-metal materials, including sealing gasket materials for detachable connections. (2) Auxiliary materials, such as vacuum grease, vacuum wax, adhesives used for auxiliary sealing at certain parts connections or system leaks, flux, vacuum pumps, vacuum oil, getters, working gases, and heating element materials used in the system, etc.

[0005] In recent years, research on various adsorption deposition experiments on Si(111) substrates has become increasingly in-depth. By pre-treating the silicon substrate surface with heat, a more regular 7×7 reconstructed surface can be formed. The uppermost surface of the silicon substrate can be considered as being composed of a large number of equilateral triangular units. Based on this, H... +Scientists have explored various methods and devices for ion adsorption. Typical examples include using high temperature and pressure to decompose NH3 gas and employing electrochemical reactions to adsorb H+ ions. + The ions reach a high energy level and then bombard the surface of the Si(111) substrate. However, similar methods are often only suitable for small-batch preparation in the laboratory, and require high-end equipment and are too expensive, making it difficult to meet the needs of large-scale production. Summary of the Invention

[0006] To address the aforementioned problems, the present invention aims to provide a method for preparing materials resistant to strong impacts, enabling the simple preparation of Si-H substrate materials and their application in the preparation of impact-resistant materials. This system contributes to the construction of emergency disaster mitigation and protection projects. Based on chemical adsorption / catalysis technology, it utilizes composite structural materials such as stainless steel plates, Zn thin film materials, and Si(111) substrate materials to achieve effective protection against explosive impacts.

[0007] A method for preparing a high-impact resistant material, wherein the high-impact resistant material is a Si-H substrate material plate, and the preparation of the Si-H substrate material plate is based on the following device, which includes a vacuum chamber, a Si(111) substrate material plate, an electrothermal wire mesh, and a mass spectrometer; the vacuum chamber is divided into an upper chamber and a lower chamber, and alcohol gas and inert gas can be injected into the lower chamber through a needle valve to realize the preparation of the main Si-H substrate material plate; the Si(111) substrate material plate is located in the lower chamber and is used to react with the alcohol gas to generate alcohol ions and H+. + ion;

[0008] The heating wire mesh is laid in the lower cavity; a sample stage is also installed in the lower cavity; an external power supply is connected to the heating wire mesh and the sample stage respectively through two wires; a vacuum valve is installed between the lower cavity and the upper cavity; a vacuum pump is connected to the lower cavity; and the mass spectrometer is connected to the upper cavity for detecting H in the vacuum cavity. + concentration;

[0009] The preparation method of the Si-H substrate material plate is as follows:

[0010] A Si(111) substrate was placed on the sample stage, and the vacuum pump was used to reduce the gas pressure in the vacuum chamber to 10. -7 Pa level; after closing the vacuum valve and vacuum pump, inject alcohol gas to saturate the Si(111) substrate material plate with adsorption; turn on the vacuum pump to remove excess alcohol gas, and perform medium-low temperature composite heating on the Si(111) substrate material plate; the low temperature heating temperature is below 60℃, and the medium temperature heating temperature is 300-400℃; the specific method of medium-low temperature composite heating of the sample is as follows:

[0011] First, a low-temperature heating method is used. The vacuum valve is opened, and an external power source heats the Si(111) substrate material plate at low temperature through an electric heating wire mesh; a large amount of H + Ions, including a small amount of alcohol ions, detach from the Si(111) substrate; the heated gas pressure inside the vacuum chamber increases while an inert gas is introduced from below, causing H... + It rises to the upper chamber with a higher probability; the mass spectrometer detects H in the upper chamber. + The concentration has stopped increasing; close the vacuum valve.

[0012] Then, alcohol gas is reinjected, causing H... + Re-adsorbed onto the Si(111) substrate; the above low-temperature heating method was repeated until the mass spectrometer detected a sufficient concentration of H in the upper cavity. + ion;

[0013] Finally, a medium-temperature heating method was used, with an external power supply directly heating the sample stage with a microcurrent via wires, causing all adsorbed ions to detach. Simultaneously, the vacuum pump was turned on to remove free ions from the lower chamber. Afterward, the vacuum pump was turned off and the vacuum valve was opened, allowing the H2O in the upper chamber to dissipate. + The Si-H substrate material plate can be obtained by saturating adsorption onto the Si(111) substrate material plate.

[0014] This invention also provides a system for protecting against strong impacts. The system comprises, from top to bottom, a surface layer, a middle layer, and a bottom layer. The surface layer is provided with a Zn material thin film; the middle layer is a Si-H substrate material plate; and the bottom layer is provided with an ejection device and a battery. The Si-H substrate material plate is prepared based on the above method, and the Si-H substrate material plate is saturated with H2O. + The Zn material film is used to react with H upon impact. + The reaction generates H2; the ejection device is used to eject the intermediate Si-H substrate material plate when the system is impacted.

[0015] In the above technical solution, the Si(111) substrate material plate is 1mm thick and is polished on one side. The bottom non-polished surface is scratched with a knife with a number of scratches of about 0.1mm, and a hole is formed by a drill bit. The Si-H substrate material plate is connected by interlaced heating wires and is laid in the middle layer of the anti-strong impact system.

[0016] Furthermore, the surface and bottom layers of the anti-strong impact system are provided with stainless steel plates, and the Zn material film is disposed at the bottom of the surface stainless steel plate; the bottom layer has through holes for the battery to connect the ejection device and the heating wire; the middle layer, due to its overlapping arrangement, creates some space for H + / H2 aggregation.

[0017] Furthermore, when the anti-strong impact system detects an approaching strong impact, the battery supplies power to the heating wire to heat the Si-H substrate material plate, emitting H... + It reacts chemically with Zn to form H2 gas; once there is a strong impact on the upper stainless steel plate, the sparks generated by the impact will ignite the H2, and the ejection device will be activated at the same time.

[0018] This invention discloses a method for preparing a high-impact resistant material, wherein the high-impact resistant material is a Si-H substrate material. The traditional method suffers from complex preparation processes, high costs, and difficulties in mass production for application. Therefore, this invention innovates the preparation process. In the preparation of the Si-H substrate material plate, chemical gas adsorption and high-vacuum heating technology are fully utilized, allowing the alcohol ions after alcohol gas adsorption to react with H+. + Ions can be effectively separated. After assembling the composite structure, microcurrent heating technology is used to further separate H+ ions. + Ions can effectively detach from the Si(111) substrate and, under the catalysis of Zn, form a sufficient amount of H2 gas within the designed enclosed space. Once a powerful impact breaks through the surface (upper) stainless steel plate, it will instantly detonate the H2 gas. The ejection device simultaneously ejects the composite material body, striving to reduce the impact force to the greatest extent. The system's components are ingeniously designed and precisely fitted, fully realizing the function of releasing powerful impact chemical gas explosions under the composite structure, especially optimizing the preparation process of key materials.

[0019] The present invention has the following beneficial effects:

[0020] The impact-resistant material of the present invention has a high cost-performance ratio and a simplified manufacturing process, making it easy to mass-produce. An impact-resistant system based on the aforementioned impact-resistant material can provide active defense and offset impact forces. It uses ordinary materials and gases as the main design elements and has low daily safety risks. Attached Figure Description

[0021] Figure 1 Equipment structure diagram used in the Si-H material preparation process;

[0022] Figure 2 Schematic diagram of the lower cavity;

[0023] Figure 3 Schematic diagram of medium and low temperature heating;

[0024] Figure 4 Overall schematic diagram of the protective materials;

[0025] Figure 5 Schematic diagram of Si-H substrate material plate;

[0026] Among them, 1 is the upper cavity, 2 is the lower cavity, 3 is the Si(111) substrate material plate, 4 is the electric heating wire mesh, 5 is the mass spectrometer, 6 is the vacuum valve, 7 is the needle valve, 8 is the vacuum pump, 9 is the alcohol gas / inert gas, 10 is the sample stage, 11 is the external power supply, 12 is the surface layer, 13 is the intermediate layer, 14 is the bottom layer, 15 is the ejection device, 16 is the wire, and 17 is the battery. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments.

[0028] This invention provides a method for preparing a high-impact resistant material, an apparatus used in the preparation process, and a high-impact resistant system assembled based on the high-impact resistant material.

[0029] Reference Figure 1 , 2 This is an apparatus used in the preparation of Si-H substrate material plates. The vacuum chamber is divided into an upper chamber 1 and a lower chamber 2. Alcohol gas / inert gas 9 can be injected into the lower chamber 2 through a needle valve 7 to prepare the Si-H substrate material plate. In the vacuum chamber, the lower chamber 2 is equipped with a sample stage 10, which is covered and wrapped with an electric heating wire mesh 4. An external power supply 11 is connected to the sample stage 10 through two wires 16. A vacuum valve 6 is provided between the lower chamber 2 and the upper chamber 1. The suction port of the vacuum pump 8 is located in the lower chamber 2, and the detection port of the mass spectrometer 5 is located in the upper chamber 1.

[0030] Regarding the preparation method of the Si-H substrate material plate, the Si(111) substrate material plate 3 is placed on the sample stage 10, and the vacuum pump 8 reduces the gas pressure in the vacuum chamber (upper and lower chambers 2) to 10. -7 Pa level; after closing vacuum valve 6 and vacuum pump 8, alcohol gas is injected to saturate the Si(111) substrate material plate 3; the alcohol gas reacts with the Si(111) substrate, decomposing into alcohol ions and H + Ions are adsorbed onto it; turn on vacuum pump 8 to remove excess alcohol gas and perform medium-low temperature composite heating on the sample.

[0031] Lower cavity 2 (e.g.) Figure 2 Low-temperature composite heating mode (such as) Figure 3 The heating modes include: ① a medium-temperature heating mode using an external power supply 11 to heat the sample via a heating wire mesh 4, aimed at removing impurities or adsorbed gas ions from the surface of the Si(111) substrate material. ② a low-temperature heating mode using a weak current, aimed at removing H+ ions from the surface of the Si(111) substrate material. + Ions, while retaining as many alcohol ions as possible for adsorption.

[0032] First, medium-temperature heating is used to remove impurities from the Si(111) substrate surface, and the vacuum chamber is then emptied by vacuum pump 8. After vacuum pump 8 is turned off, alcohol gas enters the lower chamber 2 through needle valve 7 and is saturated and adsorbed on the Si(111) substrate surface. The first low-temperature heating removes most of the H2 on the surface. + Ions, and a small portion of alcohol ions, are desorbed. At this point, vacuum valve 6 is opened, increasing the heated gas pressure inside the chamber while simultaneously introducing inert gas from below, causing H... + With a higher probability, it rises to the upper cavity 1; mass spectrometer 5 observes H within the upper cavity 1. + The concentration changes, and after it increases to a certain level, the vacuum valve 6 is closed; the vacuum pump 8 in the lower chamber 2 is opened to discharge the residual gas in the lower chamber 2.

[0033] Repeat the alcohol gas adsorption step and the low-temperature heating step until a sufficient amount of H2 has accumulated in the upper cavity 1 as observed by mass spectrometer 5. + ions (H) + (Ion volume ratio ≥ 30%). After medium-temperature heating, the H+ accumulated in upper cavity 1... + Ions are saturated and adsorbed on Si(111) substrate material and Si-H substrate material plate.

[0034] Reference Figure 4 and 5 Regarding the assembly of the anti-strong impact system, the Si(111) substrate thin film material is 1mm thick and single-sided polished. The bottom non-polished surface is scratched with a knife with several scratches of about 0.1mm. The drill bit forms tiny holes, which are connected by the heating wires and overlapped in the middle layer of the anti-strong impact system.

[0035] The stainless steel plates are respectively disposed on the surface layer 12 and the bottom layer 14 of the impact-resistant material. The bottom of the surface layer 12 is coated with a thin film of Zn material. A space is left between the surface layer 12 and the intermediate layer 13 by means of support columns, which allows for H... + Ions undergo a chemical reaction and accumulate a certain amount of H2 gas; the bottom layer 14 is fixedly equipped with a battery 17, which is connected to a catapult device 15 and several heating wires.

[0036] Regarding the implementation of the strong impact protection function, when a strong impact is detected, the heating wire powered by battery 17 preheats the Si-H substrate material plate, emitting H... + The gas reacts chemically with Zn to form H2 gas. Once there is a strong impact on the upper stainless steel plate, the sparks generated by the impact will ignite the H2, and the ejection device 15 will be activated.

[0037] The key to this invention lies in the mass production of Si-H substrate material plates and the integration of the material's properties with chemical engineering techniques to design a powerful impact protection system, maximizing the protection of ordinary civilian facilities against strong explosive impacts. Finally, from an application perspective, compared to existing protective materials / devices, this invention features a compact structure, clearly defined implementation parameters, and higher protective capabilities, making it suitable for widespread application in civilian facilities requiring intensive protection.

Claims

1. A method for preparing a high-impact resistant material, characterized in that, The impact-resistant material is a Si-H substrate plate. The Si-H substrate plate is prepared using a device comprising a vacuum chamber, a Si(111) substrate plate, an electrothermal wire mesh, and a mass spectrometer. The vacuum chamber consists of an upper chamber and a lower chamber. Alcohol gas and inert gas can be injected into the lower chamber via needle valves to prepare the Si-H substrate plate. The Si(111) substrate plate is located in the lower chamber and reacts with the alcohol gas to generate alcohol ions and H+. + ion; The heating wire mesh is laid in the lower cavity; a sample stage is also installed in the lower cavity; an external power supply is connected to the heating wire mesh and the sample stage respectively through two wires; a vacuum valve is installed between the lower cavity and the upper cavity; a vacuum pump is connected to the lower cavity; and the mass spectrometer is connected to the upper cavity for detecting H in the vacuum cavity. + concentration; The preparation method of the Si-H substrate material plate is as follows: A Si(111) substrate was placed on the sample stage, and the vacuum pump was used to reduce the gas pressure in the vacuum chamber to 10. - 7 Pa level; after closing the vacuum valve and vacuum pump, inject alcohol gas to saturate the Si(111) substrate material plate with adsorption; turn on the vacuum pump to remove excess alcohol gas, and perform medium-low temperature composite heating on the Si(111) substrate material plate; the low temperature heating temperature is below 60℃, and the medium temperature heating temperature is 300-400℃; the specific method for medium-low temperature composite heating of the sample is as follows: First, a low-temperature heating method is used. The vacuum valve is opened, and an external power source heats the Si(111) substrate material plate at low temperature through an electric heating wire mesh; a large amount of H + Ions, including a small amount of alcohol ions, detach from the Si(111) substrate; the heated gas pressure inside the vacuum chamber increases while an inert gas is introduced from below, causing H... + It rises to the upper chamber with a higher probability; the mass spectrometer detects H in the upper chamber. + The concentration has stopped increasing; close the vacuum valve. Then, alcohol gas is reinjected, causing H... + Re-adsorbed onto the Si(111) substrate; the above low-temperature heating method was repeated until the mass spectrometer detected a sufficient concentration of H in the upper cavity. + ion; Finally, a medium-temperature heating method was used, with an external power supply directly heating the sample stage with a microcurrent via wires, causing all adsorbed ions to detach. Simultaneously, the vacuum pump was turned on to remove free ions from the lower chamber. Afterward, the vacuum pump was turned off and the vacuum valve was opened, allowing the H2O in the upper chamber to dissipate. + The Si-H substrate material plate can be obtained by saturating adsorption onto the Si(111) substrate material plate.

2. A system for preventing strong impacts, characterized in that, The system comprises a top layer, a middle layer, and a bottom layer from top to bottom. The top layer is provided with a Zn material thin film; the middle layer is a Si-H substrate material plate, and a partial space is left between the top layer and the middle layer; the bottom layer is provided with a catapult device and a battery. The Si-H substrate material plate is prepared based on the method described in claim 1, and the Si-H substrate material plate is saturated with H2. + The Zn material film is used to react with H upon impact. + The reaction generates H2; the ejection device is used to eject the intermediate Si-H substrate material plate when the system is impacted.

3. The anti-force impact system according to claim 2, characterized in that, The Si(111) substrate material plate is 1mm thick and is polished on one side. The bottom non-polished surface is scratched with a knife with a number of scratches of about 0.1mm, and a hole is formed by a drill bit. The Si-H substrate material plate is connected by interlaced heating wires and is laid in the middle layer of the anti-strong impact system.

4. The anti-force impact system according to claim 2, characterized in that, The impact-resistant system has stainless steel plates on its surface and bottom layers, with a Zn material film at the bottom of the surface stainless steel plate; the bottom layer has through holes for connecting the battery to the ejection device and heating wire; the overlapping middle layers create space for H... + / H2 aggregation.

5. The anti-force impact system according to claim 2, characterized in that, When the impact protection system detects an approaching strong impact, the battery powers the heating wire to heat the Si-H substrate, emitting H₂. + It reacts chemically with Zn to form H2 gas; once there is a strong impact on the upper stainless steel plate, the sparks generated by the impact will ignite the H2, and the ejection device will be activated at the same time.

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