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Sulfur-smoke-free powder composition and preparation method thereof

A technology of composition and pyrotechnics, applied in the direction of explosives, etc., can solve the problems of personal casualties and property losses, low working ability, high mechanical sensitivity, etc., achieve excellent storage stability, eliminate environmental pollution, and improve environmental performance.

Inactive Publication Date: 2013-07-24
LIUYANG HELI HIGH TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are that the working ability is too small, the energy is low, there is smoke when burning, it is easy to absorb moisture, and it has high mechanical sensitivity.
Impact sensitivity: (hammer weight 10kg, drop height 25cm) 52-60% explosion, friction sensitivity (3.923MPa, swing angle 90°) 100%, due to high friction sensitivity, major safety accidents often occur in the fireworks industry and pyrotechnics production enterprises , causing personal injury and property damage
In addition, when fireworks are set off, a large amount of sulfur dioxide is produced, causing serious pollution to the environment.

Method used

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  • Sulfur-smoke-free powder composition and preparation method thereof
  • Sulfur-smoke-free powder composition and preparation method thereof
  • Sulfur-smoke-free powder composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take 10 parts of barium nitrate, 55 parts of potassium perchlorate, 30 parts of guanidine nitrate, 5 parts of ethyl cellulose, and an appropriate amount of ethanol. Mix in a mixer for 30 minutes, enter a granulator, spray an appropriate amount of ethanol, granulate, dry, sieve (pass 2.24-0.80 sieve holes) and pack, and the preparation is completed. According to the GJB772A-9702601HE602.2 method to detect the above composition, the impact sensitivity (hammer weight 10 kg, drop height 25cm), the measured value is 13%, the friction sensitivity: (gauge pressure 1.25MPa, swing angle 90°), the measured value is 0%. Moisture absorption rate: 0.15%, ignition temperature: 403°C, flame sensitivity: 25.8 (the height at which the ignition rate is 50%). Potassium chlorate, lead, mercury, arsenic, sulfur are all zero.

[0018] The inner tube of the fireworks shell was tested at a launch height of 76.1 meters (75 meters for black powder), and the charge was 1 / 3 of that of traditiona...

Embodiment 2

[0020] Recipe:

[0021]

[0022] Process method, process parameter and detection method are the same as embodiment 1. The moisture absorption rate rises to 1.5%, and the launch height is 70 meters. Other test indicators are the same as in Example 1.

Embodiment 3

[0024] Recipe:

[0025]

[0026] The process method, process parameters and detection method are the same as implementation 1. The moisture absorption rate is 2%, the launch height is 65 meters, and other test indicators are the same as the implementation of 1.

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Abstract

The invention discloses a sulfur-smoke-free firework powder composition and a preparation method thereof. According to the powder composition, potassium perchlorate and barium nitrate are used as oxidants, and a nitro-compound is used as a flammable agent, so that the safety and environment-friendliness of the firework production are greatly improved, the production cost of the firework powder is lowered, and various indexes are excellent through the detection. The preparation method of the sulfur-smoke-free firework powder composition is simple and mainly comprises the simple processes of mixing, pelletizing, drying and screening. According to the sulfur-smoke-free firework powder composition and the preparation method thereof disclosed by the invention, the problems that the conventional black powder is poor in safety, easy to absorb moisture, large in production risk and the like are solved. The sulfur-smoke-free firework powder composition has the advantages of having an emission effect better than that of black powder, achieving zero-exhaustion of sulfur dioxide and the like. The sulfur-smoke-free firework powder composition is extensively applicable to preparing firework propellant powder and 3-8-inch powder of large festive fireworks.

Description

technical field [0001] The invention relates to a sulfur-free pyrotechnic powder composition and a manufacturing method thereof. Potassium perchlorate and barium nitrate are used as oxidants, and nitro compounds are used as combustible agents, thereby greatly improving the safety of fireworks production and reducing the production cost of fireworks powder. Background technique [0002] In the prior art, the fireworks industry still uses black powder (military nitrate) in large quantities as the propellant of the fireworks shell. The currently used black powder formula is: potassium nitrate 75%, sulfur 10%, hemp stalk charcoal 15%. Black powder has excellent ignition performance. It is a low-velocity gunpowder. After being ignited, it will produce deflagration without detonation. Its disadvantages are that the working ability is too small, the energy is low, there is smoke when burning, it is easy to absorb moisture, and the mechanical sensitivity is high. Impact sensitivit...

Claims

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Application Information

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IPC IPC(8): C06B31/12
Inventor 刘琼吾
Owner LIUYANG HELI HIGH TECH DEV CO LTD
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