Active material charging structure and preparation method thereof
By using an axially structured active material charge structure, combined with explosive and active material modules, the problem of energy release efficiency of active materials in the charge structure is solved, achieving high damage effect and low-cost production, which is suitable for ammunition charges.
Patent Information
- Application Number
- CN202511097317.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-06
- Publication Date
- 2025-11-21
AI Technical Summary
In existing technologies, active materials are mainly used to help improve the destructive power of explosives, and are rarely used as part of the charge structure. Furthermore, their energy release efficiency and destructive effect during explosion need to be improved.
The active material charge structure with an axial structure includes an explosive module A and an active material module B inside the shell. The charge module is formed by pressing a special plastic shell. The explosive module detonates first during detonation. The active material is Al/PTFE or fluorocarbon aluminum, and the shell material is polyetherketone. It is prepared by cold pressing.
It enhances the destructive power of a charge of the same volume, achieves the release of high chemical energy, and has the effects of implosion, arson and overpressure damage. Moreover, the preparation method is simple, the cost is low, and it is easy to mass-produce.
Smart Images
Figure CN120991663A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of charge structure, and particularly relates to an active material charge structure and a preparation method thereof. BACKGROUND
[0002] The active material is a kind of special energetic material composed of two or more than two non-explosive solid materials, has inertness in normal state, and can react between the system components and release energy quickly under strong impact condition. The active material has the advantages of simple manufacturing process, high density, excellent thermodynamic properties, stability and safety. The application of the active material in the ammunition charge currently mainly focuses on the traditional mechanical mixing of the active material and the explosive. The reaction rate of the active material under the explosion impact of the explosive is significantly improved, and the energy release of the explosive is increased.
[0003] The active material has high strength and processability, and can be used as a structural material. However, the current research and application of the active material mainly focuses on the related components of the active fragment, the active liner, the charge shell and other active damage elements, and is mainly used for assisting to improve the damage ability to the target. The application of the active material to replace the explosive module as part of the charge structure is less. SUMMARY
[0004] In order to solve the problems in the prior art, the present application provides an active material charge structure and a preparation method thereof, which can release high chemical energy after detonating the active material, can implement the comprehensive damage of implosion, fire and overpressure to the target, and can enhance the damage ability of the charge of the same volume.
[0005] The technical problem of the present application is solved by adopting the following technical scheme:
[0006] The present application aims to provide an active material charge structure, which comprises a shell, a charge module A and a charge module B are press-fitted in the shell, the charge module A and the charge module B are axial structures, a detonation primer is arranged at the end of the charge module A away from the charge module B, the charge module A is an explosive material, and the charge module B is an active material.
[0007] Further, the active material is Al / PTFE material or fluorine shell aluminum material.
[0008] Further, the average particle size of aluminum in the fluorine shell aluminum material is 20-30 μm, the fluorine shell material is F 2311 , and the mass of the fluorine shell material accounts for 10%.
[0009] Further, the volume ratio of the charge module A to the charge module B is 1-3:1.
[0010] Further, the explosive material adopts JHL-2, and the mass ratio of hexogen and aluminum in the explosive material component is 65-70:30-35.
[0011] Further, the shell is made of polyether ketone or polyether ether ketone, and the thickness of the shell is 1-5mm.
[0012] A preparation method of an active material charge structure comprises the following steps: performing explosive material pressing in a shell to form a charge module A; performing active material pressing in the shell to form a charge module B; the charge module A and the charge module B are in an axial structure in the shell, and a detonating detonator is installed at the end of the charge module A away from the charge module B.
[0013] A special plastic shell is used, explosive material pressing is performed in the special plastic shell to form a special plastic-explosive material charge module A; the special plastic shell is used, active material pressing is performed in the special plastic shell to form a special plastic-active material charge module B; the charge module A and the charge module B are in an axial structure, and the charge module A is detonated preferentially to the charge module B.
[0014] Further, the active material charge column is prepared by cold pressing forming, the forming pressure is 3-5t, and the pressure maintaining time is 0.5-1.5min.
[0015] Compared with the prior art, the beneficial technical effects of the present application are as follows:
[0016] The active material charge structure of the present application puts the active material powder into the special plastic shell, and forms the active material charge structure by pressing. The active material has a reinforcing effect on the air shock wave generated by the explosion of the explosive. The structure is very insensitive and safe in static state, has certain toughness and strength, and can be directly machined, while under the action of high-speed impact, can occur violent explosion and combustion, produce high heat and high temperature, as a charge material, the high chemical energy released after the explosive detonates the active material can implement the comprehensive damage of implosion, arson and overpressure on the target, and enhance the damage capacity of the same volume charge. The preparation method of the present application has simple process, low cost, and is convenient for batch production and processing.
[0017] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, it can be implemented according to the content of the specification, and in order to make the above content and purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a schematic diagram of the composite charge working condition structure in the test example of the active material charge structure of the present application.
[0019] Figure 2 It is a high-speed photography record diagram of the detonator detonation single explosive structure JHL-2 in the test example of the present application.
[0020] Figure 3 For the test example of the present application, the detonator initiates the active material 10% F 2311 The high-speed photographic record of the fluorine shell aluminum / explosive JHL-2 combined structure.
[0021] 1 - shell, 2 - charge module A, 3 - charge module B, 4 - detonator. DETAILED DESCRIPTION
[0022] The technical solutions of the present application are further described in detail below in conjunction with specific examples. It should be understood that the following examples are only illustratively described and explained, and should not be interpreted as limiting the scope of protection of the present application. Any technology achieved based on the above description of the present application is covered within the scope intended to be protected by the present application.
[0023] In addition, unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application can be purchased from the market or prepared by existing methods.
[0024] Example 1
[0025] Charge module A: explosive material JHL-2;
[0026] Charge module B: active material fluorine shell aluminum.
[0027] The average particle size of Al in the fluorine shell aluminum material is 25 μm, and the fluorine shell material is F 2311 , and the mass accounts for 10%, denoted as 10% F 2311 Fluorine shell aluminum; the active material charge column is composed of 10% F 2311 The fluorine shell aluminum powder is prepared by cold pressing, the forming pressure is 4 t, and the pressure holding time is 1 min. The explosive material is JHL-2, and the mass ratio of the components of the explosive material RDX and aluminum is RDX: Al = 68.4%: 31.6%. The explosive material JHL-2 and the active material 10% F 2311 The volume ratio of fluorine shell aluminum is 1:1. The 10% F 2311 The size of the fluorine shell aluminum charge column is Ф42×32 mm (the shell thickness is 1 mm), and the size of the JHL-2 explosive charge column is Ф42×32 mm (the shell thickness is 1 mm), which is referred to Figure 1 .
[0028] The special plastic shell 1 polyether ether ketone is used, the explosive material is pressed in the special plastic shell 1 polyether ether ketone, and the polyether ether ketone-explosive material charge module A 2 is formed;
[0029] The special plastic shell 1 polyether ether ketone is used, the active material is pressed in the special plastic shell 1 polyether ether ketone, and the polyether ether ketone-active material charge module B 3 is formed;
[0030] The charge module A2 and the charge module B3 are axial structures, and the detonating detonator 4 is installed at the end of the charge module A2 away from the charge module B3. When detonated, the charge module A2 is detonated prior to the charge module B3.
[0031] Example 2
[0032] The charge module A: explosive material JHL-2;
[0033] The charge module B: active material Al / PTFE.
[0034] The average particle size of Al in the Al / PTFE is 20 μm, and the mass accounts for 20%. The active material column is prepared by cold pressing and forming of Al / PTFE powder, and the forming pressure is 3 t, and the pressure maintaining time is 0.5 min. The explosive material is JHL-2, and the mass ratio of the components of the explosive material, RDX and Al, is RDX:Al=65%:35%. The volume ratio of the explosive material JHL-2 to the active material Al / PTFE is 2:1. The size of the Al / PTFE column obtained by pressing is Ф40×30 mm (the shell thickness is 3 mm), and the size of the JHL-2 explosive column is Ф40×60 mm (the shell thickness is 3 mm).
[0035] The special plastic shell 1 polyether ketone is used, the explosive material is pressed in the special plastic shell 1 polyether ketone, and the polyether ketone-explosive material charge module A2 is formed;
[0036] The special plastic shell 1 polyether ketone is used, the active material is pressed in the special plastic shell 1 polyether ketone, and the polyether ketone-active material charge module B3 is formed;
[0037] The charge module A2 and the charge module B3 are axial structures, and the detonating detonator 4 is installed at the end of the charge module A2 away from the charge module B3. When detonated, the charge module A2 is detonated prior to the charge module B3.
[0038] Example 3
[0039] The charge module A: explosive material JHL-2;
[0040] The charge module B: active material fluorine shell aluminum.
[0041] The average particle size of Al in the fluorine shell aluminum material is 30 μm, and the fluorine shell material is F 2311 , and the mass accounts for 10%, which is recorded as 10% F 2311 Aluminum; the active material column is prepared by cold pressing and forming of 10% F 2311 aluminum powder, and the forming pressure is 5 t, and the pressure maintaining time is 1.5 min. The explosive material is JHL-2, and the mass ratio of the components of the explosive material, RDX and Al, is RDX:Al=70%:30%. The volume ratio of the explosive material JHL-2 to the active material 10% F 2311The volume ratio of fluorine shell aluminum is 3:1. The 10% F 2311 The fluorine shell aluminum cartridge size is Ф42*32mm (shell thickness is 5mm), and the JHL-2 explosive cartridge size is Ф42*96mm (shell thickness is 5mm).
[0042] The special plastic shell 1 polyether ketone is used, and the explosive material is pressed in the special plastic shell 1 polyether ketone to form a polyether ketone-explosive material charging module A2;
[0043] The special plastic shell 1 polyether ketone is used, and the active material is pressed in the special plastic shell 1 polyether ketone to form a polyether ketone-active material charging module B3;
[0044] The charging module A2 and the charging module B3 are axial structures, and the detonating detonator 4 is installed at the end of the charging module A2 away from the charging module B3. When detonating, the charging module A2 is detonated prior to the charging module B3.
[0045] Test example 1
[0046] The shock wave overpressure data and high-speed images of single explosive structure unit and active material / explosive combined structure unit are compared through free field static explosion test. Among them, the active material is fluorine shell aluminum material, and the explosive is JHL-2 explosive. The free field static explosion test verifies the thermal damage, shock wave damage and range increasing effect of active material in composite charge.
[0047] The axial combination charging type in the test is divided into two categories:
[0048] The first category is single type charge detonation, which uses detonator to detonate JHL-2 explosive module charge, which is recorded as working condition 1.
[0049] The second category is axial combination charge detonation, which uses detonator to detonate JHL-2 / fluorine shell aluminum axial composite charge, that is, the active material charging structure of embodiment 1, which is simply referred to as JHL-2 detonating fluorine shell aluminum working condition, which is recorded as working condition 2. The working condition structure of the composite charge used in the test is as shown in Figure 1 .
[0050] The test process is recorded by high-speed photography. Referring to Figure 2 and Figure 3 . The free field overpressure sensor is used to measure the free field overpressure data at 2m and 4m away from the center of the charge.
[0051] Thermal damage is mainly characterized by explosion fireball parameters, including fireball diameter and duration. After the test, the fireball data is as shown in the following table 1.
[0052] Table 1 high-speed photography records explosion fireball situation
[0053]
[0054]
[0055] In the working condition 2, the addition of fluorine shell aluminum increases the maximum fireball diameter of the whole charge, and the increase is 23.88%; the fireball duration is also increased, and the increase is 12.94%.
[0056] The free field overpressure data at 2m and 4m from the center of the charge are measured in the test as shown in Table 2.
[0057] Table 2 Comparison of free field overpressure peak value
[0058]
[0059] It is found from the comparison of overpressure peak value data that the average free field overpressure at 2m and 4m from the explosion center obtained in the working condition (working condition 2) with the fluorine shell aluminum charge unit is higher than that obtained in the working condition with the JHL-2 single charge structure.
[0060] In summary, through the free field static explosion test, the impact performance of the single explosive structure unit and the active material / explosive combined structure unit under the same volume is verified. On the one hand, the active material / explosive combined structure unit improves the fireball diameter by 28.4% through the aluminum-fluorine exothermic reaction, and prolongs the fireball duration to 76.8ms, thereby improving the thermal damage effect of the charge; on the other hand, the active material-containing charge improves the shock wave overpressure generated by the charge through the sustained energy output, thereby improving the impact damage effect of the charge.
[0061] The above-mentioned embodiment numbers of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.
[0062] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative but not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and these all belong to the protection of the present application.
Claims
1. A charge structure for an active material, characterized in that, The device includes a shell, and charge module A and charge module B are press-fitted inside the shell. Charge module A and charge module B are axial structures. A detonator is installed at the end of charge module A away from charge module B. Charge module A is made of explosive material, and charge module B is made of active material.
2. The active material loading structure as described in claim 1, characterized in that: The active material is made of Al / PTFE or fluorine-coated aluminum.
3. The active material loading structure as described in claim 2, characterized in that: The average particle size of aluminum in the fluorinated aluminum shell material is 20–30 μm, and the fluorinated shell material is F. 2311 The fluorine shell material accounts for 10% of the total mass.
4. The active material loading structure as described in claim 1, characterized in that: The volume ratio of charge module A to charge module B is 1 to 3:
1.
5. The active material loading structure as described in claim 1, characterized in that: The explosive material used is JHL-2, and the mass ratio of RDX and aluminum in the explosive material composition is 65-70:30-35.
6. The active material loading structure as described in claim 1, characterized in that: The shell is made of polyetherketone or polyetheretherketone, and the thickness of the shell is 1 to 5 mm.
7. The method for preparing an active material charge structure according to any one of claims 1-6, characterized in that: The process includes pressing explosive materials into the casing to form a charge module A; pressing active materials into the casing to form a charge module B; charge module A and charge module B are axially arranged within the casing, and a detonator is installed at the end of charge module A away from charge module B.
8. The method for preparing an active material loading structure as described in claim 7, characterized in that: The active material drug column is prepared by cold pressing, with a pressing pressure of 3-5t and a holding time of 0.5-1.5min.