Preparation method of high-energy composite structure explosive

Abstract

The invention discloses a preparation method of a high-energy composite structure explosive, which comprises the following steps: forming a quasi-core-shell structure by a metastable intermolecular composite material, polydopamine and an ammonium nitrate explosive, wherein the ammonium nitrate explosive is coated by the metastable intermolecular composite material, a bonding interface between the metastable intermolecular composite material and the ammonium nitrate explosive is made of polydopamine, the metastable intermolecular composite material is composed of nano aluminum powder and one of ferric oxide, copper oxide and polytetrafluoroethylene, the mass ratio of the nano aluminum powder to any one of ferric oxide, copper oxide and polytetrafluoroethylene is (1-4):(3-5), and the ammonium nitrate explosive is one or more of cyclonite RDX, octogen HMX and hexanitrohexaazaisowurtzitane CL-20. The preparation method provided by the invention is simple in process, and the structure of the high-energy composite structure explosive and the ratio of the modified ammonium nitrate explosive to the metastable intermolecular composite material can be accurately controlled through reaction conditions and doping amount; and the used raw materials are low in cost, and large-scale batch preparation can be realized.

Description

technical field

[0001] The invention relates to a preparation method of a high-energy composite structure explosive, in particular to a method for exothermic performance and combustion performance of a high-energy material, and belongs to the technical field of energetic materials. Background technique

[0002] The development theme of modern weapon systems and energetic materials has been inseparable from higher energy levels and excellent combustion properties. The integration of homogeneous energetic materials such as RDX, Octogen (HMX), hexanitrohexaazaisowurtzitane (CL-20) and heterogeneous energetic materials will be the key to improving the performance of energy systems. supplementary strategy. The energy density of homogeneous energetic materials can only reach half of that of heterogeneous energetic materials, but it has a higher energy release rate. Heterogeneous energetic materials have a high energy density but a slow energy release rate. The metastable interm...

Examples

Embodiment 1

[0031] A method for preparing high-energy composite structure explosives, comprising the following steps:

[0032] Step 1. Prepare 20 mL of Tris buffer solution with a pH of 8.5 to 8.6 and a concentration of 10 mM, and dissolve dopamine hydrochloride in the buffer solution to obtain a dopamine hydrochloride solution with a concentration of 0.4 g / L;

[0033] Step 2: Put 1.4g of RDX in the dopamine hydrochloride solution, stir and mix the dispersion with a magnetic stirrer at a speed of 500RPM for 3 hours, and filter and wash the stirred solution three times with deionized water. Put the cleaned ammonium nitrate explosive in an oven at 50°C for 12 hours to obtain modified RDX;

[0034] Step 3: Weigh 0.7g of modified RDX, 0.1g of nano-aluminum powder, and 0.2g of polytetrafluoroethylene into 10mL of alcohol solution, filter out most of the solvent after ultrasonication for 10min, and dry in a vacuum oven for 2h to obtain Composite structure explosive; ultrasonic frequency is 45k...

Embodiment 2

[0038] A method for preparing high-energy composite structure explosives, comprising the following steps:

[0039] Step 1. Prepare 20 mL of Tris buffer solution with a pH of 8.5 to 8.6 and a concentration of 10 mM, and dissolve dopamine hydrochloride in the buffer solution to obtain a dopamine hydrochloride solution with a concentration of 0.4 g / L;

[0040] Step 2: Put 1.4g of RDX in the dopamine hydrochloride solution, stir and mix the dispersion with a magnetic stirrer at a speed of 500RPM for 3 hours, and filter and wash the stirred solution three times with deionized water. Put the cleaned ammonium nitrate explosive in an oven at 50°C for 12 hours to obtain modified RDX;

[0041]Step 3: Weigh 0.7g of modified RDX, 0.12g of nano-aluminum powder, and 0.18g of iron oxide into 10mL of isopropanol solution, filter out most of the solvent after ultrasonication for 10min, and dry in a vacuum oven for 2h to obtain a composite Structural explosives; the frequency of ultrasound is ...

Embodiment 3

[0043] A method for preparing high-energy composite structure explosives, comprising the following steps:

[0044] Step 1: Prepare 50 mL of Tris buffer solution with a pH of 8.5 to 8.6 and a concentration of 10 mM, and dissolve dopamine hydrochloride in the buffer to obtain a dopamine hydrochloride solution with a concentration of 2 g / L;

[0045] Step 2. Put 2g of RDX in the dopamine hydrochloride solution, use a magnetic stirrer to stir and mix the dispersion at a speed of 500RPM for 3 hours, and filter and wash the stirred solution three times with deionized water. The cleaned ammonium nitrate explosive was placed in an oven at 50°C for 12 hours to obtain modified RDX;

[0046] Step 3: Weigh 0.7g of modified RDX, 0.12g of nano-aluminum powder, and 0.2g of polytetrafluoroethylene into 10mL of isopropanol solution, filter out most of the solvent after ultrasonication for 10min, and dry in a vacuum oven for 2h. Obtain composite structure explosive; the frequency of ultrasound ...

technical field

[0001] The invention relates to a preparation method of a high-energy composite structure explosive, in particular to a method for exothermic performance and combustion performance of a high-energy material, and belongs to the technical field of energetic materials. Background technique

[0002] The development theme of modern weapon systems and energetic materials has been inseparable from higher energy levels and excellent combustion properties. The integration of homogeneous energetic materials such as RDX, Octogen (HMX), hexanitrohexaazaisowurtzitane (CL-20) and heterogeneous energetic materials will be the key to improving the performance of energy systems. supplementary strategy. The energy density of homogeneous energetic materials can only reach half of that of heterogeneous energetic materials, but it has a higher energy release rate. Heterogeneous energetic materials have a high energy density but a slow energy release rate. The metastable interm...

Examples

Embodiment 1

[0031] A method for preparing high-energy composite structure explosives, comprising the following steps:

[0032] Step 1. Prepare 20 mL of Tris buffer solution with a pH of 8.5 to 8.6 and a concentration of 10 mM, and dissolve dopamine hydrochloride in the buffer solution to obtain a dopamine hydrochloride solution with a concentration of 0.4 g / L;

[0033] Step 2: Put 1.4g of RDX in the dopamine hydrochloride solution, stir and mix the dispersion with a magnetic stirrer at a speed of 500RPM for 3 hours, and filter and wash the stirred solution three times with deionized water. Put the cleaned ammonium nitrate explosive in an oven at 50°C for 12 hours to obtain modified RDX;

[0034] Step 3: Weigh 0.7g of modified RDX, 0.1g of nano-aluminum powder, and 0.2g of polytetrafluoroethylene into 10mL of alcohol solution, filter out most of the solvent after ultrasonication for 10min, and dry in a vacuum oven for 2h to obtain Composite structure explosive; ultrasonic frequency is 45k...

Embodiment 2

[0038] A method for preparing high-energy composite structure explosives, comprising the following steps:

[0039] Step 1. Prepare 20 mL of Tris buffer solution with a pH of 8.5 to 8.6 and a concentration of 10 mM, and dissolve dopamine hydrochloride in the buffer solution to obtain a dopamine hydrochloride solution with a concentration of 0.4 g / L;

[0040] Step 2: Put 1.4g of RDX in the dopamine hydrochloride solution, stir and mix the dispersion with a magnetic stirrer at a speed of 500RPM for 3 hours, and filter and wash the stirred solution three times with deionized water. Put the cleaned ammonium nitrate explosive in an oven at 50°C for 12 hours to obtain modified RDX;

[0041]Step 3: Weigh 0.7g of modified RDX, 0.12g of nano-aluminum powder, and 0.18g of iron oxide into 10mL of isopropanol solution, filter out most of the solvent after ultrasonication for 10min, and dry in a vacuum oven for 2h to obtain a composite Structural explosives; the frequency of ultrasound is ...

Embodiment 3

[0043] A method for preparing high-energy composite structure explosives, comprising the following steps:

[0044] Step 1: Prepare 50 mL of Tris buffer solution with a pH of 8.5 to 8.6 and a concentration of 10 mM, and dissolve dopamine hydrochloride in the buffer to obtain a dopamine hydrochloride solution with a concentration of 2 g / L;

[0045] Step 2. Put 2g of RDX in the dopamine hydrochloride solution, use a magnetic stirrer to stir and mix the dispersion at a speed of 500RPM for 3 hours, and filter and wash the stirred solution three times with deionized water. The cleaned ammonium nitrate explosive was placed in an oven at 50°C for 12 hours to obtain modified RDX;

[0046] Step 3: Weigh 0.7g of modified RDX, 0.12g of nano-aluminum powder, and 0.2g of polytetrafluoroethylene into 10mL of isopropanol solution, filter out most of the solvent after ultrasonication for 10min, and dry in a vacuum oven for 2h. Obtain composite structure explosive; the frequency of ultrasound ...

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