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A kind of 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 the energy performance of formulations, inability to use propellants for high-energy density materials, and achieve process cost and preparation time. Reduced, improved quality controllability, good safety effects

Active Publication Date: 2022-07-29
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0046] The preparation method of the above-mentioned high-density specific impulse propellant, comprising the following steps:

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

[0048] (2) make the adhesive and the oxidant into a paste-like material;

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

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

[0051] Further, in step (2), the method that binder and oxidant are made into dough-like material is:

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

Embodiment 1

[0057] Table 1 embodiment 1 high density specific impulse propellant formula

[0058] Recipe composition Mass percentage content (%) Metal fuel (aluminum-based alloy powder) 25 Oxidizer (CL-20) 70 Binder (ethylene-vinyl acetate copolymer) 5

[0059] Table 2 Properties of the propellant obtained in Example 1

[0060] Density / (g / cm 3 )

Embodiment 2

[0062] Table 3 embodiment 2 high density specific impulse propellant formula

[0063] Recipe composition Mass percentage content (%) Metal fuel (aluminum-based alloy powder) 30 Oxidizer (AP) 67 Binder (68# wax) 3

[0064] The propellant properties obtained in Table 4 Example 2

[0065] Density / (g / cm 3 )

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PUM

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Abstract

The invention relates to a high-density specific impulse propellant, comprising the following mass percentages of main components: metal fuel: 25%-40%; oxidant: 55%-70%; binder: 1%-5%. The metal fuel skeleton is prepared by an additive manufacturing process, and then the oxidant is filled into the metal fuel skeleton to prepare a high-density specific impulse propellant. The method designs the solid propellant into a micro-ordered structure, and at the same time converts the solid filler in the solid propellant into a structural material, which provides energy while having a certain strength, maintains the structural integrity of the propellant, and forms a theoretical density specific impulse. More than 510g·s / cm 3 solid propellant.

Description

technical field [0001] The invention belongs to the technical field of composite solid propellants, in particular to a specific impulse with a theoretical density greater than 510 g·s / cm 3 High-density specific impulse solid propellant and preparation method thereof. Background technique [0002] Solid propellant technology is a common technology and supporting technology for missile weapons and space vehicles, and it is also a restricting technology, which directly affects the throwing ability and comprehensive combat effectiveness of missile weapons and equipment, effectively promotes the upgrading of missile weapons and equipment, and has a positive impact on winning future information. It plays a pivotal role in fighting wars under high-tech conditions such as transformation and intelligence, establishing an effective strategic nuclear deterrent force, and enhancing national defense strength. [0003] Density specific impulse is an index parameter to comprehensively eva...

Claims

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Application Information

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Patent Type & Authority Patents(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
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