Ignition powder containing boron-magnesium sintered powder

A technology of sintering powder and ignition powder, applied in ignition agent, attack equipment and other directions, can solve problems such as reducing combustion temperature, and achieve the effect of fast gas production rate, broad application prospect and high flame temperature

Inactive Publication Date: 2020-11-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since boron is easily oxidized in the air, and the melting and boiling point of the oxide layer is very lo

Method used

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  • Ignition powder containing boron-magnesium sintered powder
  • Ignition powder containing boron-magnesium sintered powder
  • Ignition powder containing boron-magnesium sintered powder

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0047] Example 1

[0048] An ignition powder containing boron-magnesium sintered powder, which is prepared by the following preparation method:

[0049] (1) Pre-treatment:

[0050] Dissolve fluororubber in ethyl acetate to obtain a fluororubber solution. The ratio of the added amount of fluororubber dissolved in ethyl acetate is 1g:5mL;

[0051] KNO 3 Put it in a blast drying box, dry for 24 hours at 40°C, take it out and grind it, pass through a 60-mesh sieve, and take the sieve, which is the pretreated KNO 3 .

[0052] Dry blending: Take boron-magnesium sintered powder with a mass ratio of magnesium to boron of 1:4 and pretreated KNO 3 Mechanical stirring and mixing are performed, and the boron-magnesium sintered powder and potassium nitrate are respectively passed through a 60-mesh screen and repeated 5 times to obtain mixed powder. The mass ratio of the mixed powder is: potassium nitrate: 60%, and boron-magnesium sintered powder is 40%.

[0053] (3) Wet mixing: Add 3% fluororubber s...

Example Embodiment

[0061] Example 2

[0062] An ignition powder containing boron-magnesium sintered powder, which is prepared by the following preparation method:

[0063] (1) Pre-treatment:

[0064] Dissolve fluororubber in a mixed solvent of acetone and ethyl acetate to obtain a fluororubber solution. The ratio of the added amount of fluororubber dissolved in ethyl acetate is 1g:20mL;

[0065] KNO 3 Dry it at 50℃ for 16 hours, take it out and grind it, pass through a 60-mesh sieve, and take the sieve, which is the pretreated KNO 3 .

[0066] (2) Dry blending: take boron-magnesium sintered powder with a mass ratio of magnesium to boron of 1:2 and pretreated KNO 3 Mechanical stirring and mixing are performed, and the boron-magnesium sintered powder and potassium nitrate are respectively passed through a 60-mesh screen and repeated 5 times to obtain mixed powder. The mass ratio of the mixed powder is: potassium nitrate: 75%, and boron-magnesium sintered powder is 25%.

[0067] (3) Wet mixing: Add 3% fluoro...

Example Embodiment

[0075] Example 3

[0076] An ignition powder containing boron-magnesium sintered powder, which is prepared by the following preparation method:

[0077] (1) Pre-treatment:

[0078] Dissolve fluororubber in a mixed solvent of acetone and ethanol to obtain a fluororubber solution. The ratio of the added amount of fluororubber dissolved in ethyl acetate is 1g:10mL;

[0079] KNO 3 Dry for 8 hours at 60°C, take out and grind, pass through a 60-mesh sieve, and take the under-sieve, which is the pretreated KNO 3 .

[0080] (2) Dry blending: take boron-magnesium sintered powder with a mass ratio of magnesium to boron of 1:3 and pretreated KNO 3 Mechanical stirring and mixing are performed, and the boron-magnesium sintered powder and potassium nitrate are respectively passed through a 60-mesh screen and repeated 5 times to obtain mixed powder. The mass ratio of the mixed powder is: potassium nitrate: 70%, and boron-magnesium sintered powder is 30%.

[0081] (3) Wet mixing: adding 8% fluororubber...

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Abstract

The invention relates to ignition powder containing boron-magnesium sintered powder, and belongs to the field of explosives and powders. The method includes: stirring and mixing boron-magnesium sintered powder with dried and ground KNO3 according to a mass ratio of magnesium to boron of 1:4-1:2, adding a fluororubber solution, kneading and granulating the mixture, drying the mixture, and screeningthe mixture to obtain the ignition powder. The ignition powder can generate more gas in the combustion process, the gas production rate is higher, the flame temperature is higher, and the high-temperature duration time is longer, so that compared with traditional B/KNO3 ignition powder, the ignition powder has higher ignition capacity, the problems of low combustion temperature, low gas production rate and the like of ignition powder adopting traditional boron powder are solved, and wide application prospects are achieved; in addition, the preparation method is simple in process, low in costand good in product uniformity.

Description

technical field [0001] The invention relates to an ignition powder containing boron-magnesium sintered powder, in particular to an ignition powder containing boron-magnesium sintered powder with higher ignition pressure and flame temperature than the prior art, and belongs to the field of pyrotechnics. Background technique [0002] Ignition powder is generally used to ignite pyrotechnic agents or pyrotechnic products, and has a strong ability to ignite. The performance of ignition powder plays a vital role in the ignition process of weapons and ammunition and the ignition process of engineering blasting, which determines the reliability of the system. With the development of charge technology and engineering blasting technology, it is required that the ignition powder can not only generate a large amount of high-temperature gas to quickly raise the pressure of the combustion chamber to a predetermined value, but also generate enough high-temperature solid residue to transfer...

Claims

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Application Information

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IPC IPC(8): C06C15/00
CPCC06C15/00
Inventor 任慧李雅茹王慧心焦清介闫石邓鹏
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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