Oxidizer for firework explosive agent and preparation thereof

A technology of fireworks and firecrackers and crackers, which is applied in the direction of explosives, etc., can solve the problems of reduced fire contact ability, lower firing rate, and high cost, and achieve the goals of reducing the decomposition temperature, increasing the oxygen release rate, and improving the quality of firecrackers Effect

Inactive Publication Date: 2010-12-15
HUNAN VOCATIONAL INST OF SAFETY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since the implementation of "Fireworks and Firecrackers Safety and Quality" GB10631-2004, due to the safety and storage stability of potassium perchlorate, the oxidant used in domestic production of firecrackers and crackers is basically potassium perchlorate. However, the production process of potassium perchlorate uses The method of potassium chlorate secondary electrolysis requires more than 8,000 kilowatt-hours of electricity to produce one ton of potassium perchlorate. At the same time, it consumes a large amount of electric energy and potassium resources, making the cost of potassium perchlorate relatively high, and the price per ton is as high as more than 10,000 yuan. Therefore, it is the focus and direction of current research to find substances that can partially replace potassium perchlorate w

Method used

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  • Oxidizer for firework explosive agent and preparation thereof
  • Oxidizer for firework explosive agent and preparation thereof
  • Oxidizer for firework explosive agent and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 40% of potassium perchlorate, 30% of potassium nitrate, and 30% of barium nitrate are used to form a mixture, then tartaric acid accounting for 3% of the total mass of the mixture is added to obtain the oxidant of the present invention, and finally mixed with combustible agent 3: 2 to form firecracker medicament to produce firecrackers. After testing, it was found that:

[0036] The explosion rate is over 95%;

[0037] The firing rate reaches over 98%;

[0038] Sound level: 108.5dB ≤ sound level value should be ≤ 122.2dB;

[0039] The time for the gas product pressure to rise from 0.69MP to 2.07MP is 1.74ms,

[0040] The pH value of the pyrotechnic powder is in the range of 5 to 9;

[0041] Moisture content of pyrotechnic powder ≤ 1.5%;

[0042] The moisture absorption rate of pyrotechnic powder is ≤2.0%;

[0043] The thermal stability of the pyrotechnic powder is that there is no decomposition phenomenon at 75°C±2°C for 48 hours;

[0044] The friction sensitivity...

Embodiment 2

[0055] First, 20% of potassium perchlorate, 30% of potassium nitrate and 50% of barium nitrate are used to form a mixture, then tartaric acid accounting for 1% of the total mass of the mixture is added to obtain the oxidant of the present invention, and finally mixed with combustible agent 1:1 to form a firecracker agent to produce firecrackers. After testing, it was found that:

[0056] The explosion rate is over 95%;

[0057] The firing rate reaches over 98%;

[0058] Sound level: 105.5dB ≤ sound level value should be ≤ 120.2dB;

[0059] The time for the gas product pressure to rise from 0.69MP to 2.07MP is 1.75ms;

[0060] The pH value of the pyrotechnic powder is in the range of 5 to 9;

[0061] Moisture content of pyrotechnic powder ≤1.02%;

[0062] The moisture absorption rate of pyrotechnic powder is ≤2.0%;

[0063] The thermal stability of the pyrotechnic powder is that there is no decomposition phenomenon at 75°C±2°C for 48 hours;

[0064] The friction sensitivi...

Embodiment 3

[0067] First, 50% of potassium perchlorate, 10% of potassium nitrate and 40% of barium nitrate are mixed to form a mixture, then tartaric acid accounting for 5% of the total mass of the mixture is added to obtain the oxidant of the present invention, and finally mixed with combustible agent 1:1 to form a firecracker medicament to produce firecrackers. After testing, it was found that:

[0068] The explosion rate is over 95%;

[0069] The firing rate reaches over 98%;

[0070] Sound level: 107.5dB ≤ sound level value should be ≤ 125.2dB;

[0071] The time for the gas product pressure to rise from 0.69MP to 2.07MP is 1.8ms;

[0072] The pH value of the pyrotechnic powder is in the range of 5 to 9;

[0073] Moisture content of pyrotechnic powder ≤1.10%;

[0074] The moisture absorption rate of pyrotechnic powder is ≤2.0%;

[0075] The thermal stability of the pyrotechnic powder is that there is no decomposition phenomenon at 75°C±2°C for 48 hours;

[0076] The friction sens...

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PUM

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Abstract

The invention discloses an oxidizer for firework explosive agent and preparation thereof. The oxidizer consists of the following mass components: 20 to 50 percent of potassium perchlorate, 0 to 30 percent of potassium nitrate, 30 to 50 percent of barium nitrate mixture and 1 to 5 percent of complexing agent, wherein the complexing agent is tartaric acid or potassium sodium tartrate. The fireworks manufactured by using the oxidizer is characterized in that: the burn rate is over 98 percent; the sound level ranges from 100dB to 140dB; the pressure of gas product rises from 0.69MP to 2.07MP within 1.74ms and the pH value of pyrotechnic composition is between 5 and 9; the water content is less than or equal to 1.5 percent; the regain is less than or equal to 2.0 percent; the thermal stability ensures a decomposing phenomenon does not occur at 75+/-2DEG C within 48 hours; the friction sensitivity is less than or equal to 40 percent; and the sensitivity to impact is less than or equal to 0 percent. The oxidizer meets the requirements of national standards of Firework Safety and Quality. The manufacturing process of the oxidizer is simple, the cost is low and the application prospect is good.

Description

technical field [0001] The invention belongs to the field of fireworks and firecrackers manufacturing, and in particular relates to an oxidizing agent for firecrackers or fireworks and firecrackers and a preparation method thereof. Background technique [0002] Since the implementation of "Fireworks and Firecrackers Safety and Quality" GB10631-2004, due to the safety and storage stability of potassium perchlorate, the oxidant used in domestic production of firecrackers and crackers is basically potassium perchlorate. However, the production process of potassium perchlorate uses The method of potassium chlorate secondary electrolysis requires more than 8,000 kilowatt-hours of electricity to produce one ton of potassium perchlorate. At the same time, it consumes a large amount of electric energy and potassium resources, making the cost of potassium perchlorate relatively high, and the price per ton is as high as more than 10,000 yuan. Therefore, it is the focus and direction o...

Claims

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Application Information

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IPC IPC(8): C06B31/08
Inventor 杨吉明
Owner HUNAN VOCATIONAL INST OF SAFETY TECH
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