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Novel ignition powder and preparation method thereof

A new type of ignition powder technology, applied in explosives processing equipment, explosives, offensive equipment and other directions, can solve the problems of narrow application range of ignition powder, wide adjustable range of burning speed, low cost of ignition powder, etc., and achieve wide adjustment range of burning speed. , low cost, low hygroscopic effect

Inactive Publication Date: 2019-06-18
HUBEI INST OF AEROSPACE CHEMOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a new type of ignition powder and its preparation method, which solves the problems of narrow application range, low energy, poor safety performance and complicated preparation process of the existing ignition powder, and is prepared by the present invention The ignition powder cost is low, the process performance is good, the safety performance is high, the energy is high, the specific volume is high, the ignition temperature is low, the burning speed can be adjusted in a wide range, and the preparation process is simple. It is a new type of safe ignition powder

Method used

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Examples

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preparation example Construction

[0033] The present invention also discloses a preparation method of the above-mentioned novel ignition powder, which specifically includes the following steps:

[0034] (1) Weigh according to the ratio of the selected formula above, first add the coating agent, combustion catalyst, and fuel into the mixer and mix evenly, and the mixing temperature is 30-50°C;

[0035](2) Then, the main oxidant and the auxiliary oxidant are added to the mixer in batches and mixed evenly to obtain a wet powdered ignition powder.

[0036] In the preparation process of the ignition powder of the present invention, there is no need for granulation and sieving processes, dust is not easily generated during the production process, and the prepared wet ignition powder can be directly loaded in the ignition device, so there is no dust hazard in the entire production, assembly, and use processes. It is a new type of safe and environment-friendly ignition powder.

Embodiment 1

[0038] A new type of ignition powder, including the following components by mass percentage: coating agent: 3.0% HTPB+3.0% DOS; main oxidant: 54% KP; auxiliary oxidant: 15% KN; fuel: 16% Si+8% DAP ( m + for NH 4 + ); combustion catalyst: 0.5% Fe 2 o 3 +0.5% CuO.

[0039] Its preparation method is as follows:

[0040] (1) Weighing according to the formula ratio, HTPB, DOS, Fe 2 o 3 , CuO were mixed evenly by hand, then added to the vertical mixer, DAP was added to the vertical mixer, the mixing temperature was 30°C, and mixed for 5 minutes; then Si was added to the vertical mixer and mixed for 5 minutes;

[0041] (2) Add KN to the vertical mixer and mix for 5 minutes; now add 1 / 2KP to the vertical mixer and mix for 10 minutes; then add 1 / 2KP to the vertical mixer and mix for 10 minutes. The material is the ignition powder.

Embodiment 2

[0043] A new type of ignition powder, including the following components by mass percentage: coating agent: 3.0% HTPB+3.0% ATBC; main oxidant: 69% KP; fuel: 16% Si+8% DAP (M + for NH 4 + ); combustion catalyst: 0.5% Fe 2 o 3 +0.5% ferrocene.

[0044] Its preparation method is as follows:

[0045] (1) Weighing according to the formula ratio, HTPB, ATBC, Fe 2 o 3 1. Ferrocene was mixed evenly by hand, then added to the vertical mixer, DAP was added to the vertical mixer, the mixing temperature was 40°C, and mixed for 10 minutes; then Si was added to the vertical mixer and mixed for 10 minutes;

[0046] (2) First add 1 / 2KP into the vertical mixer and mix for 10 minutes; then add 1 / 2KP into the vertical mixer and mix for 10 minutes; after the mixing is completed, discharge the material to obtain ignition powder.

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Abstract

The invention discloses novel ignition powder and a preparation method thereof. The novel ignition powder comprises, by mass percentage, 3-9% of coating agent, 50-70% of main oxidant, 0-15% of auxiliary oxidant, 15-25% of fuel and 1-4% of combustion catalyst. The ignition powder prepared by the method has the advantages that the problems that existing ignition powder is narrow in application range, low in energy, poor in safety performance and complex in preparation process are solved; the prepared ignition powder is good in safety performance, high in energy, good in thermal stability and wide in combustion speed regulation range; meanwhile, the novel ignition powder is less prone to moisture absorption, safe and environmentally friendly, and the whole production, assembling and use process of the ignition powder is free of dust hazards.

Description

technical field [0001] The invention belongs to the technical field of energetic materials, and in particular relates to a novel ignition powder and a preparation method thereof. Background technique [0002] Ignition powder is a very important kind of pyrotechnic agent, which is often used to accept external stimuli to ignite other agents, such as propellants and propellants. The performance of the ignition powder will directly affect the normal operation of the entire ammunition system, so it occupies a very important position in the charge system. At present, the main types of ignition powder are black powder, B-KNO 3 Ignition powder, Mg-PTFE ignition powder, Al-KClO 4 Light the powder. Black powder is a commonly used igniter. It has high flame sensitivity and large specific volume, but its detonation heat is small, and it is difficult to ignite some insensitive gunpowder or pyrotechnic agent. Boron-based ignition powder is a kind of high-energy ignition powder. It ha...

Claims

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Application Information

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IPC IPC(8): C06B29/16C06B29/06C06B21/00
Inventor 熊伟强刘智昊方永红王鹏冯勇曹仕瑾赵新岩李忠友李泽民
Owner HUBEI INST OF AEROSPACE CHEMOTECH
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