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A kind of preparation method of light-weight fast-burning material

A lightweight material, lightweight technology, applied in offensive equipment, explosives processing equipment, explosives, etc., can solve problems such as high density and restrictions

Active Publication Date: 2022-02-18
INNER MONGOLIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The burning rate of this material is as high as 1000mm / s or more, but its density is as high as ~2g / cm 3 , which is limited in some application fields with high requirements for light weight

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] 1. Brush a 1.0±0.2μm polytetrafluoroethylene layer on the surface of the carbon fiber composite polymethacrylimide foam, and dry it for later use;

[0014] Weigh according to the ratio of metal powder, fluoropolymer mixture and carbon material with mass fractions of 52%, 40% and 8%, respectively, and dissolve the mixture of polytetrafluoroethylene, hexafluoropropylene and polyvinyl fluoride into ethyl acetate solvent After the fluoropoly mixture is fully dissolved, move it to the reaction kettle, fully stir it under the condition of 400r / min for 1h, add the mixed powder of Al, Ti, B and Mg and the mixture of carbon nanotubes, graphene and carbon fiber one by one, continue Stir for 2 hours until uniform, increase the temperature of the water bath to 80°C to remove part of the ethyl acetate solvent, lower the temperature of the water bath to room temperature and stir for 3 hours to stop heating to obtain a slurry of fast-burning materials. Proportionally weigh the quick-b...

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PUM

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Abstract

The invention discloses a preparation method of a lightweight fast-burning material, which belongs to the technical field of energetic materials. It is characterized in that it is composed of light materials with a mass fraction of 20-80% and fast-burning materials with a mass fraction of 20-80% as the main matrix, and polytetrafluoroethylene with a thickness of 1-2 μm as an interface layer. The lightweight material is carbon fiber composite polymethacrylimide foam, and the fast-burning material is composed of metal powder, fluoropolymer mixture and carbon material with mass fractions of 50-60%, 30-70% and 5-20% respectively; metal The powder is a mixed powder of Al, Ti, B and Mg, the fluoropolymer mixture is a mixture of polytetrafluoroethylene, hexafluoropropylene and polyvinyl fluoride, and the carbon material is a mixture of carbon nanotubes, graphene and carbon fibers. The quick-burning material is prepared by a wet process, and then the quick-burning material and the lightweight material coated with PTFE are compounded and molded to obtain a normal pressure burning rate of 100-1200mm / s and a density of 0.1-1.0 g / cm 3 lightweight and fast-burning material. The material has important application potential in fields such as grain filling and multi-pulse motors.

Description

technical field [0001] The invention belongs to the technical field of energetic materials, and relates to a preparation method of a lightweight fast-burning material. Background technique [0002] With the improvement and development of modern weapon performance, weapon systems such as high-speed kinetic energy bombs, artillery accompanying charges and high-speed interceptor missiles have been proposed. Far beyond the requirements of the conventional propellant burning rate, it is required to achieve a burning rate of more than 1000mm / s. In addition, for some grains with large slenderness and complex combustion surface structure, in order to ensure the integrity and stability of their structure, it is necessary to fill them with light and fast-burning materials for ignition and maintain a certain structure. Integrity while achieving rapid burn. [0003] Generally, solid propellants rely on heat conduction as the basis for energy feedback in the process of combustion wave ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B33/02C06B21/00
CPCC06B33/02C06B21/0041
Inventor 张代兵吕晓雨李泽张静怡李宇冯诗颖侯迪夫范东凯
Owner INNER MONGOLIA UNIVERSITY