Preparation method of nano-copper-coated aluminum composite fuel

A composite fuel and coated aluminum technology, which is applied in nanotechnology, transportation and packaging, metal processing equipment, etc., can solve the problem of low combustion calorific value, achieve uniform distribution, simple production equipment, and uniform particle size

Active Publication Date: 2018-10-23
合肥净龙环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the coating materials involved in the research are inert substances, non...

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  • Preparation method of nano-copper-coated aluminum composite fuel

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Embodiment 1

[0024] Embodiment 1: The steps of preparing nano-copper-coated aluminum composite fuel are as follows:

[0025] (1) Under normal temperature and pressure, prepare a certain concentration of copper sulfate aqueous solution and sodium hydroxide aqueous solution, and mix the copper sulfate aqueous solution and sodium hydroxide aqueous solution at a volume ratio of 1:1 to form a copper hydroxide suspension; The copper oxide suspension is centrifuged, washed with deionized water until the pH is neutral, and copper hydroxide is obtained; wherein, the concentration of the copper sulfate aqueous solution is 0.01mol / L, and the concentration of the sodium hydroxide aqueous solution is 2.1 times the concentration of the copper sulfate water;

[0026] (2) Add the copper hydroxide and aluminum powder obtained in step (1) into water for ultrasonic dispersion with a power of 60 watts to obtain a mixed aqueous phase suspension of copper hydroxide and aluminum powder; wherein, the particle size...

Embodiment 2

[0028] Embodiment 2: The steps of preparing nano-copper-coated aluminum composite fuel are as follows:

[0029] (1) Under normal temperature and pressure, prepare a certain concentration of copper sulfate aqueous solution and sodium hydroxide aqueous solution, and mix the copper sulfate aqueous solution and sodium hydroxide aqueous solution at a volume ratio of 1:1 to form a copper hydroxide suspension; The copper oxide suspension is centrifuged, washed with deionized water until the pH is neutral to obtain copper hydroxide; wherein, the concentration of the copper sulfate aqueous solution is 0.055mol / L, and the concentration of the sodium hydroxide aqueous solution is 2.1 times the concentration of the copper sulfate water;

[0030] (2) Add the copper hydroxide and aluminum powder obtained in step (1) into water for ultrasonic dispersion with a power of 210 watts to obtain a mixed aqueous phase suspension of copper hydroxide and aluminum powder; wherein, the particle size of t...

Embodiment 3

[0032] Embodiment 3: The steps of preparing nano-copper-coated aluminum composite fuel are as follows:

[0033] (1) Under normal temperature and pressure, prepare a certain concentration of copper sulfate aqueous solution and sodium hydroxide aqueous solution, and mix the copper sulfate aqueous solution and sodium hydroxide aqueous solution at a volume ratio of 1:1 to form a copper hydroxide suspension; The copper oxide suspension is centrifuged, washed with deionized water until the pH is neutral, and copper hydroxide is obtained; wherein, the concentration of the copper sulfate aqueous solution is 0.1 mol / L, and the concentration of the sodium hydroxide aqueous solution is 2.1 times the concentration of the copper sulfate water;

[0034](2) Add the copper hydroxide and aluminum powder obtained in step (1) into water for ultrasonic dispersion with a power of 360 watts to obtain a mixed aqueous phase suspension of copper hydroxide and aluminum powder; wherein, the particle size...

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Abstract

The invention discloses a preparation method of a nano-copper-coated aluminum composite fuel. The preparation method comprises the steps of adding trace copper ion complexing agent trisodium citrate and aluminum ion complexing agent ammonium fluoride into mixed water-phase turbid liquid of copper hydroxide and aluminite powder; centrifugally separating a purple red product obtained through reaction; and obtaining the nano-copper-coated aluminum composite fuel. The process provided by the invention is carried out at normal temperature and normal pressure, no any surface active agent is introduced, and the obtained nano-copper is uniformly distributed on the surface of nano-aluminum and uniform in grain size; and the concentration of the trace copper ion complexing agent is regulated, and the granularity of the obtained nano-copper particles can be further adjusted.

Description

technical field [0001] The invention relates to a preparation method of a nano-aluminum composite fuel for a solid propellant, in particular to a preparation method of a nano-copper-coated aluminum composite fuel. Background technique [0002] Due to its high density, low oxygen consumption and high combustion heat, aluminum powder has a significant effect on improving specific impulse, so it is widely used as metal fuel in solid rocket propellants. Compared with traditional micron aluminum fuel, the special small size effect and surface effect of nano aluminum fuel make it have higher reactivity and energy release efficiency. Then, the chemical properties of nano-aluminum are more active than micro-aluminum, and it is easier to interact with external environmental factors (temperature, humidity, atmosphere, etc.), forming a higher content of inert oxide film on its surface, thus losing most of its activity. Therefore, maintaining the activity of nano-aluminum fuel has beco...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/02B22F1/00B82Y40/00
CPCB82Y40/00B22F9/24B22F1/17B22F1/054
Inventor 程志鹏于森博褚效中徐继明仲慧张莉莉戴本林
Owner 合肥净龙环保科技有限公司
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