Method for cladding energetic materials

A coating material and coating technology, applied in the direction of nitrated acyclic/alicyclic/heterocyclic amine explosive composition, nitroalkane composition, ammonium perchlorate composition, etc., can solve complex operation, application limitations, Environmental pollution and other problems, to achieve the effect of low and controllable conditions, strong solubility, and pollution reduction

Inactive Publication Date: 2015-05-06
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that existing methods for coating energetic materials have uneven coating, complicated operation, some special energetic materials cannot be used for wet coating, and

Method used

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  • Method for cladding energetic materials
  • Method for cladding energetic materials

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A method for coating an energetic material in this embodiment includes the following steps:

[0031] First, dissolve the fluororubber in ethyl acetate to form a coating material solution with a concentration of 5‰, measure 20ml of the coating material solution, then add 2g RDX to the coating material solution to form a suspension, and stir the suspension After 30 minutes, pour the suspension into a pressure vessel with a temperature of 15°C, seal it tightly, and inject CO into the pressure vessel at a flow rate of 2kg / h. 2 , when the pressure in the pressure vessel reaches 5MPa, stop feeding CO 2 , after 10 minutes of heat preservation and pressure holding, the CO 2 Ventilation was carried out for 10 minutes, and finally the pressure of the pressure vessel was released to normal pressure to obtain a 5% fluororubber-coated RDXG product.

[0032] from figure 1 with figure 2 It can be seen that the crystal surface of the RDXG after the fluororubber coating in Example ...

Embodiment 2

[0034] A method for coating an energetic material in this embodiment includes the following steps:

[0035] First, dissolve fluororubber in methanol to prepare a coating material solution with a concentration of 1‰, measure 20ml of the coating material solution, and then add 2g of hexanitrohexaazaisowurtzitane to the coating material solution to form a suspension , Stir the suspension for 30min, pour the suspension into a pressure vessel with a temperature of 14°C, seal it, and pass CO2 into the pressure vessel at a flow rate of 3kg / h 2 , when the pressure in the pressure vessel reaches 5MPa, stop feeding CO 2 , after 10 minutes of heat preservation and pressure holding, the CO 2 Ventilation was performed for 15 minutes, and finally the pressure of the pressure vessel was released to normal pressure to obtain a fluororubber-coated hexanitrohexaazaisowurtzitane product with a mass fraction of 1%.

[0036] from image 3 with Figure 4 It can be seen that the crystal surface ...

Embodiment 3

[0041] A method for coating an energetic material in this embodiment includes the following steps:

[0042] First, dissolve fluororubber in methanol to form a coating material solution with a concentration of 3.1‰, measure 20ml of the coating material solution, then add 2g of aluminum hydride to the coating material solution to form a suspension, and stir the suspension for 30 minutes. Pour the suspension into a pressure vessel with a temperature of 14.5°C, seal it tightly, and feed CO into the pressure vessel at a flow rate of 2.5kg / h 2 , when the pressure in the pressure vessel reaches 5MPa, stop feeding CO 2 , after 10 minutes of heat preservation and pressure holding, the CO 2 Air was exchanged for 13 minutes, and finally the pressure of the pressure vessel was released to normal pressure to obtain a fluorine rubber-coated aluminum hydride product with a mass fraction of 3%.

[0043] from Figure 5 with Image 6It can be seen that the crystal edges and corners of the a...

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Abstract

The invention relates to a method for cladding energetic materials and particularly relates to a method for coating energetic materials by taking liquid CO2 as an anti-solvent, a dispersion agent and a drying medium. The method provided by the invention is mainly used for solving the technical problems of the existing method for coating energetic material that the coating is not uniform, the operation is complicated, some special energetic materials cannot be coated by a wet process, the solvent cannot be mutually soluble with a non-solvent to limit the application of the water (or solution) suspension method and cause the environment pollution. The invention provides a method for coating energetic materials by taking liquid CO2 as an anti-solvent, a dispersion agent and a drying medium. The method provided by the invention has the advantages of uniform coating, simple operation, wide application range and no environmental pollution.

Description

technical field [0001] The invention relates to a method for coating energetic materials, in particular to a method of using liquid CO 2 Methods of encapsulating energetic materials as anti-solvents, dispersants and drying media. Background technique [0002] Solid propellants play a very important role in the development of aerospace and missiles. Most of the high-energy energetic materials contained in solid propellants (such as HMX, CL-20, LLM-105, etc.) have high energy but high mechanical sensitivity, which brings great challenges to the development, use, storage, and transportation of propellants. Here comes the problem of unsafety and poor compatibility between propellant components. Therefore, high energy, low vulnerability, and insensitivity of energetic materials are one of the main goals to be achieved by solid propellants. [0003] At present, there are three main methods to solve the high-energy insensitivity, safety and compatibility of energetic materials: ...

Claims

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Application Information

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IPC IPC(8): C06B25/34C06B25/36C06B29/22
Inventor 杨继华蔡兴旺马东旭张景林
Owner ZHONGBEI UNIV
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