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Bimetal oxide modified boron fuel and preparation method thereof

A bimetallic oxide, fuel technology, applied in offensive equipment, climate sustainability, explosives processing equipment, etc., can solve the problem of further improvement of ignition and combustion performance, to improve ignition and combustion performance, improve ignition performance, Effect of low initial oxidation temperature

Active Publication Date: 2022-08-02
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a double metal oxide modified boron fuel and its preparation method to solve the problems in the prior art On the basis of ensuring high reactivity, boron fuel needs further improvement in ignition and combustion performance

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  • Bimetal oxide modified boron fuel and preparation method thereof
  • Bimetal oxide modified boron fuel and preparation method thereof
  • Bimetal oxide modified boron fuel and preparation method thereof

Examples

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Effect test

Embodiment 1

[0067] The present embodiment provides a method for preparing a bimetallic oxide modified boron fuel, which adopts an impregnation-precipitation deposition method to perform bimetallic oxide modification on the surface of boron powder to form a bimetallic oxide modified boron fuel;

[0068] The bimetallic oxide is a composite binary bimetallic oxide of bismuth oxide and vanadium oxide;

[0069] The impregnation-precipitation deposition method is as follows: first, the solution of pentavalent vanadium salt is used as the impregnation solution, and the boron powder particles are completely infiltrated, and then dried and calcined to obtain the boron fuel loaded with vanadium oxide; 3 It is a bismuth source, and NaOH is used as a precipitant to precipitate on the surface of the vanadium oxide-loaded boron fuel to obtain a precipitated intermediate product, and the precipitated intermediate product is calcined and deposited to finally obtain a vanadium oxide-loaded boron fuel for d...

Embodiment 2

[0084] This embodiment provides a method for preparing a double metal oxide modified boron fuel, which adopts a precipitation deposition-impregnation method to modify the surface of the boron powder with double metal oxide to form a double metal oxide modified boron fuel;

[0085] The bimetallic oxide is a composite binary bimetallic oxide of bismuth oxide and vanadium oxide;

[0086] The precipitation deposition-impregnation method is: firstly with BiCl 3 It is a bismuth source, and NaOH is used as a precipitant to precipitate on the surface of the boron powder to obtain a precipitation intermediate product, and the precipitation intermediate product is calcined and deposited to obtain a boron fuel for depositing bismuth oxide; The bismuth oxide-deposited boron fuel particles are completely infiltrated, dried and calcined, and finally the vanadium oxide-loaded bismuth oxide-deposited boron fuel is obtained, that is, the bimetallic oxide modified boron fuel is prepared.

[00...

Embodiment 3

[0105] In this example, the combustion performance test of bimetallic oxide modified boron fuel is given. The test method of combustion performance is as follows: take an appropriate amount of bimetallic oxide modified boron fuel sample in the sample stage of the TG-DSC instrument, set the heating rate It is 10℃ / min, and the test temperature range is 50-1000℃. The exothermic peak temperature of the double metal oxide modified boron fuel prepared by the invention is advanced to 525-498° C., which is 150-200° C. earlier than that of pure boron powder.

[0106] Specifically, an appropriate amount of bimetallic oxide-modified boron fuel sample was taken in the sample stage of the TG-DSC instrument, and the combustion of the boron powder-supported bismuth oxide composite was carried out by thermogravimetry and differential calorimetry (TG-DSC). The performance was tested, the heating rate was 10°C / min, and the test temperature range was 50-1000°C. The exothermic peak temperature o...

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Abstract

The invention provides a bimetallic oxide modified boron fuel and a preparation method thereof, and the method adopts a dipping-precipitation deposition method or a precipitation deposition-dipping method to carry out bimetallic oxide modification on the surface of boron powder to form the bimetallic oxide modified boron fuel. The bimetallic oxide is a composite binary bimetallic oxide of bismuth oxide and vanadium oxide; the content of bismuth oxide and the content of vanadium oxide in the bimetallic oxide modified boron fuel are respectively 0.1 wt.%-5wt.%. Two metal oxides of bismuth oxide and vanadium oxide are loaded on the surface of boron powder by adopting a precipitation deposition-impregnation method and an impregnation-precipitation deposition method, so that the bimetallic oxide modified boron fuel with high reaction activity is formed. Compared with pure boron powder, the boron powder has the advantages that the oxidation exothermic peak is low, the ignition delay time is short, the proportion of the two metal oxide components is low, the ignition and combustion performance of the boron powder can be effectively improved on the premise that the energy density of the boron powder is not affected, and the application potential is large.

Description

technical field [0001] The invention belongs to the technical field of high-energy solid propellants, relates to boron fuel, and in particular relates to a bimetallic oxide modified boron fuel and a preparation method. Background technique [0002] The thermite reaction is a reaction between a metal and a metal oxide or a non-metal oxide. Due to the high exothermic and self-sustaining characteristics of the thermite reaction, it is widely used in explosions, pyrotechnics, thermal batteries, micro-actuators, It has a wide range of applications in material synthesis and technology. At present, the research on aluminum-based thermal agents mainly focuses on Al / CuO, Al / WO 3 , Al / Fe 2 O 3 and other materials. Although boron (B) has thermodynamically higher volumetric and gravimetric energy densities than aluminum, research on boron-based thermal agents has received much less attention than aluminum-based thermal agents. The main reason is that boron powder as a fuel has the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/00C06B21/00
CPCC06B33/00C06B21/0008C06B21/0083Y02E30/30
Inventor 冯昊秦利军李丹龚婷李建国胡逸云张王乐惠龙飞
Owner XIAN MODERN CHEM RES INST
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