Nano nickel oxide coated modified boron fuel and preparation methods thereof

Abstract

The invention discloses nano nickel oxide coated modified boron fuel and three preparation methods thereof. The modified boron fuel comprises the following components in percentage by mass: 20-60% of ultrafine boron powder and 80-40% of nano nickel oxide. The invention also discloses the three preparation methods of the nano nickel oxide coated modified boron fuel. The first preparation method comprises the following steps: metering raw materials, preparing a raw material solution, adding the boron powder, preparing a precursor, calcining and the like; the second preparation method comprises the following steps: metering raw materials, preparing a raw material solution, adding the boron powder, preparing a precursor, calcining and the like; and the third preparation method comprises the following steps: metering raw materials, preparing a precursor, calcining and the like. The modified boron fuel disclosed by the invention is low in ignition temperature, high in heat output and high in combustion efficiency, and has a stable combustion state when being added in the formula of explosives and gun powders.

Description

technical field [0001] The invention belongs to the technical field of high-energy fuels used in propellant and explosives, in particular a modified nano-nickel oxide coating with large heat release and high combustion efficiency added to the formula of boron-based ignition powder and boron-based delay powder with stable combustion state Boron fuel and method for its preparation. Background technique [0002] Among the various fuels that can be used in the field of explosives, boron has many advantages such as high mass calorific value, high volumetric calorific value, non-toxic raw materials, non-toxic combustion products, and abundant resources. It has become a research hotspot in the field of explosives. The application of boron powder in the field of explosives mainly includes boron-based ignition powder and boron-based delay powder. As a high-energy ignition powder, boron-based ignition powder has a large heat of combustion and strong ignition ability, and has always b...

AI Technical Summary

Problems solved by technology

[0007] 1. Elemental boron has high melting point and boiling point, so it is difficult to melt and gasify, B 2 o 3 The boiling point of boron is also relatively high (the melting point is 460°C, and the boiling point is 1860°C), so it takes a very high temperature to make the boron particles ignite and burn, and the combustion process has to go through B 2 o 3 Evaporation of the oxide layer, which makes it more difficult for boron particles to sustain combustion;

[0008] 2. Boron has low combustion efficiency, high oxygen consumption, and produces a lot of residues, which cannot exert its high energy calorific value;

[0009] 3. B exists on the surface of boron 2 o 3 、H 3 BO 3 Impurities such as boron are incompatible with propellant and explosive systems

[0010] Therefore, the problem in the prior art is: how to improve the ignition performance, combustion performance and surface characteristics of boron fuel, so that boron-containing fire explosives can be more widely used

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