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Double oxide composite type super thermite and preparation method thereof

A super thermite, double oxide technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve practical application discount, high reactivity, easy Agglomeration surface and other problems, to achieve the effect of high safety performance, high purity and simple operation

Active Publication Date: 2014-01-08
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the incompatibility of nano-aluminum powder with organic solvents and the fact that it is easily corroded in air, acid, and alkaline media, and its extremely high reactivity makes it easy to agglomerate and the surface is easily oxidized to lose its activity, making it suitable for use in propellants. Therefore, the surface modification and active protection of nano-aluminum powder have become the hotspots of current research.

Method used

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  • Double oxide composite type super thermite and preparation method thereof
  • Double oxide composite type super thermite and preparation method thereof
  • Double oxide composite type super thermite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Weigh 2.128 g of copper nitrate trihydrate and completely dissolve it in 15 mL of absolute ethanol under ultrasonic oscillation;

[0039] (2) Slowly add 5 mL of 1,2-propylene oxide dropwise to the above suspension, add 0.3003 g of nano-aluminum powder under the action of ultrasonic oscillation after 4 min, and then add 0.70 g of nano-lead oxide (30-80nm), Continue ultrasonic oscillation at a constant temperature of 48 °C for 1 h to form a wet gel, then cool and stand still;

[0040] (3) The wet gel after static aging was dried in a vacuum drying oven at 80 °C for 24 h to obtain a dry gel, and then the ground xerogel was calcined in a muffle furnace at 439 °C for 2.5 h, namely Double oxide composite super thermite Al / CuO·PbO can be prepared.

[0041] The inventor changed the formula within the range of 1-4 parts of Al powder, 1-8 parts of CuO, and 1-8 parts of PbO, and prepared composite super thermites with different compositions.

[0042] The product was characteri...

Embodiment 2

[0047] (1) Weigh 3.193 g of copper nitrate trihydrate and completely dissolve it in 15 mL of absolute ethanol under ultrasonic oscillation;

[0048] (2) Slowly add 5 mL of 1,2-propylene oxide to the above suspension, 4 min later, add 0.3355 g of nano-aluminum powder under the action of ultrasonic oscillation, and then add 1.03 g of nano-bismuth trioxide (30-80nm ), under the condition of constant temperature of 52 ℃, continue ultrasonic oscillation for 1 h to form a wet gel, then cool down and stand still;

[0049] (3) Dry the wet gel after static aging in a vacuum drying oven at 80 °C for 28 h to obtain a dry gel, and then calcinate the ground xerogel in a muffle furnace at 445 °C for 2.5 h, namely Double oxide composite super thermite Al / 1.5CuO·1.5Bi can be prepared 2 o 3 .

[0050] The inventor added 1-4 parts of Al powder, 1-8 parts of CuO, Bi 2 o 3 Composite super thermites with different compositions were prepared by changing the formula within the range of 1-8 part...

Embodiment 3

[0056] (1) Weigh 2.128 g of copper nitrate trihydrate and completely dissolve it in 15 mL of absolute ethanol under ultrasonic oscillation;

[0057] (2) Slowly add 5 mL of epichlorohydrin to the above suspension, and after 4 min, add 0.4599 g of nano-aluminum powder under the action of ultrasonic oscillation, and then add 0.70 g of nano-tin dioxide (30-80nm). Continue ultrasonic oscillation for 1 h at a constant temperature of ℃ to form a wet gel, then cool and stand still;

[0058] (3) The wet gel after static aging was dried in a vacuum drying oven at 80 °C for 24 h to obtain a dry gel, and then the ground xerogel was calcined in a muffle furnace at 439 °C for 2.5 h, namely Double oxide composite super thermite Al / CuO·SnO can be prepared 2 .

[0059] The inventor added 1-4 parts of Al powder, 1-8 parts of CuO, SnO 2 By changing the formula within the range of 1-8 parts, composite super thermites with different compositions can be prepared.

[0060] The product was charac...

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Abstract

The invention discloses a double oxide composite type super thermite. The double oxide composite type super thermite comprises the following components in part by weight: 1 to 4 parts of Al powder, 1 to 8 parts of CuO and 1 to 8 parts of MxOy, wherein the MxOy is a metal oxide; M is selected from the II-th, the III-th, the IV-th and the V-th main group metal elements, transition metal elements or lanthanide elements; M is not Cu; x and y are positive integers and meet chemically reasonable values; and the grain size of the aluminum powder is 20 to 100 nm. The double oxide composite type super thermite has small grain size and high purity, serves as a combustion catalyst, has an excellent catalytic effect on combustion of a double-base propellant, and can remarkably increase the combustion speed of the propellant and reduce the pressure index.

Description

technical field [0001] The invention relates to a double-oxide composite super thermite and a preparation method thereof. The energetic composite thermite can be used as a double-base propellant combustion catalyst, and is mainly used for dual-base propellant packaging of missiles and rockets. The invention belongs to the technical field of nanomaterial preparation. Background technique [0002] Double base propellant is a kind of high-energy fuel used in rockets and missiles, but its disadvantages are low burning rate and high pressure index, and it is necessary to add combustion catalyst to adjust the combustion performance. The study found that the overspeed combustion phenomenon of double-base propellants is related to the particle size of the burning rate catalyst. The larger the specific surface area and the higher the activity of the catalyst, the more obvious its combustion catalytic effect will be. Due to its large specific surface area, high specific surface energ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/825B01J23/843C06D5/10
Inventor 赵凤起安亭高红旭郝海霞徐司雨裴庆谭艺肖立柏邢晓玲
Owner XIAN MODERN CHEM RES INST
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