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Aluminum powder protecting method

A technology of aluminum powder and protective agent, applied in the field of materials, can solve problems such as performance reduction and activity reduction, and achieve the effect of ensuring stability

Active Publication Date: 2020-07-17
殷柳 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, during the use of aluminum powder, sometimes it involves the use environment containing water. Since aluminum powder has high surface activity, it is easily oxi

Method used

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  • Aluminum powder protecting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Weigh aluminum powder and protective agent (in this example, paraffin wax is used as protective agent), the mass ratio of aluminum powder and protective agent is 98:2, and set aside.

[0035] (2) Add the protective agent into the second solution (the second solution uses alkanes) at 70-80°C with stirring, and fully dissolve the protective agent in the second solution to obtain the second intermediate.

[0036] (3) Mix and stir the aluminum powder and the first solution (the first solution uses alkane) at 70-80°C to obtain the first intermediate, and continue to stir the first intermediate.

[0037] (4) Add the second intermediate dropwise into the first intermediate at 70-80°C under stirring conditions. After the second intermediate is added dropwise, continue to stir the solution for 2-6 hours until the protective agent and aluminum powder are completely coated to obtain the third intermediate without delamination.

[0038] (5) Dynamically drying the third interme...

Embodiment 2

[0041] (1) Weigh aluminum powder and protective agent (in this example, titanate coupling agent is used as protective agent), the mass ratio of aluminum powder and protective agent is 99:1, and set aside.

[0042] (2) Add the protective agent into the second solution (the second solution uses ethyl acetate) under stirring at 60-70°C, and fully dissolve the protective agent in the second solution to obtain the second intermediate.

[0043] (3) Mix and stir the aluminum powder and the first solution (the first solution uses alkane) at 60-70°C to obtain the first intermediate, and continue to stir the first intermediate.

[0044] (4) Add the second intermediate dropwise into the first intermediate at 70-80°C under stirring conditions. After the dropwise addition of the second intermediate was completed, the solution was continued to be stirred for 5 hours until the protective agent and the aluminum powder were completely coated to obtain the third intermediate without delaminatio...

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Abstract

The invention discloses an aluminum powder protecting method with advantages of simple preparation method and stable and reliable product quality. The aluminum powder protecting method comprises following steps: (1), aluminum powder and a protective agent are weighed in proportion for standby application; (2), the protective agent is added to a second solution at the temperature of 40-80 DEG C under the stirring condition, the protective agent is sufficiently dissolved in the second solution, and a second intermediate is obtained; (3), the aluminum powder and a first solution are mixed and stirred uniformly at 40-80 DEG C, and a first intermediate is obtained and is continuously stirred; (4), the second intermediate is dropwise added to the first intermediate at 40-80 DEG C under the stirring condition; and after the second intermediate is dropwise added, the solution is continuously stirred until the aluminum powder is coated with the protective agent completely, and a third intermediate is obtained; and (5), the third intermediate is dynamically dried at 40-90 DEG C, and coated particles are obtained. According to the method, the aluminum powder can be effectively protected, theproportion of the protective agent to the aluminum powder can be better controlled, the prepared product is coated uniformly, and the problem of agglomeration of the protective agent is solved.

Description

technical field [0001] The invention relates to the field of materials, in particular to an aluminum powder protection method. Background technique [0002] Aluminum powder has a low melting point, moderate metal activity, good storage stability, low oxygen consumption, high density, abundant raw materials, and low cost. It is an ideal energetic metal fuel. At present, aluminum powder has been widely used in high-energy explosives, which can improve the detonation performance and make the formula have the characteristics of high detonation heat and high power. [0003] However, during the use of aluminum powder, sometimes it involves the use environment containing water. Since aluminum powder has high surface activity, it is easily oxidized and deactivated when it contacts with water, resulting in a significant drop in activity, making it used as a The performance of energy materials is greatly reduced. For this reason, it is necessary to coat a layer of waterproof and ine...

Claims

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Application Information

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IPC IPC(8): B22F1/00
CPCB22F1/102
Inventor 殷柳靳伟
Owner 殷柳
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