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Novel high-density specific impulse propellant and preparation method thereof

A high-density, propellant technology, used in offensive equipment, explosives, compressed gas generation, etc., can solve problems such as difficulty in improving formula energy performance

Active Publication Date: 2021-09-07
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, due to the compatibility problem of the adhesive curing system of conventional solid propellants, many new high-energy-density materials cannot be used in propellants, and it is difficult to improve the energy performance of the formula

Method used

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  • Novel high-density specific impulse propellant and preparation method thereof
  • Novel high-density specific impulse propellant and preparation method thereof

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Effect test

preparation example Construction

[0046] The preparation method of above-mentioned a kind of novel high-density specific impulse propellant comprises the following steps:

[0047] (1) Using the laser selective melting method, the metal fuel is printed into a skeleton of a three-dimensional lattice structure;

[0048] (2) binder and oxidizing agent are made into paste-like material;

[0049] (3) Add the paste-like material obtained in step (2) into the skeleton cavity of the three-dimensional lattice structure obtained in step (1), and press it into a dense and uniform whole to obtain a new type of high-density specific impulse propellant.

[0050] Further, in step (1), the printing conditions of laser selective melting forming are: laser power 200-400W, scanning speed 600-1200mm / s, scanning distance 0.05-0.1mm, scanning layer thickness 0.03-0.05mm.

[0051] Further, in step (2), the method for making the pasty dough-like material from the binder and the oxidizing agent is:

[0052] (21) Soak the binder in th...

Embodiment 1

[0057] Table 1 Embodiment 1 Novel high-density specific impulse propellant formula

[0058] Formula composition Mass percentage content (%) Metal fuel (aluminum base alloy powder) 25 Oxidizing agent (CL-20) 70 Binder (ethylene-vinyl acetate copolymer) 5

[0059] Table 2 embodiment 1 gained propellant performance

[0060] Density / (g / cm 3 )

Embodiment 2

[0062] Table 3 Embodiment 2 Novel high-density specific impulse propellant formula

[0063] Formula composition Mass percentage content (%) Metal fuel (aluminum base alloy powder) 30 Oxidant (AP) 67 Binder (68 # wax)

3

[0064] Table 4 embodiment 2 gained propellant properties

[0065] Density / (g / cm 3 )

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Abstract

The invention relates to a novel high-density specific impulse propellant which comprises the following main components in percentage by mass: 25-40% of metal fuel, 55-70% of an oxidizing agent, and 1-5% of a binder. A metal fuel framework is prepared by adopting an additive manufacturing process, and then the metal fuel framework is filled with an oxidizing agent to prepare the high-density specific impulse propellant. According to the method, the solid propellant is designed to be of a microcosmic ordered structure, meanwhile, solid filler in the solid propellant is converted into a structural material, energy is provided, meanwhile, certain strength is achieved, the structural integrity of the propellant is maintained, and the novel solid propellant with the theoretical density specific impulse larger than 510 g.s / cm<3> is formed.

Description

technical field [0001] The invention belongs to the technical field of composite solid propellants, and in particular relates to a theoretical density specific impulse greater than 510g·s / cm 3 A novel high-density specific impulse solid propellant and a preparation method thereof. Background technique [0002] Solid propellant technology is a common and supporting technology for missile weapons and space vehicles, as well as a restrictive technology. It directly affects the throwing capability and comprehensive combat effectiveness of missile weapons and equipment, effectively promotes the upgrading of missile weapons and equipment, and plays an important role in winning future information. It plays a decisive role in the war under high-tech conditions such as modernization and intelligence, the establishment of an effective strategic nuclear deterrent force, and the enhancement of national defense capabilities. [0003] Density specific impulse is an index parameter to com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/06C06B33/08C06B33/12C06B33/14C06D5/06
CPCC06B33/08C06B33/06C06B33/12C06B33/14C06D5/06
Inventor 付晓梦史钰王芳王凯黄谱王伟李春涛王艳薇李伟杨玲
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY