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Non-nitrine gas generating agent and production thereof

A gas generating agent and manufacturing process technology, applied in the generation of compressed gas, offensive equipment, explosives, etc., can solve the problems of low burning rate, poor thermal and chemical stability, and high burning temperature, and achieve low burning temperature and low cost. Inexpensive, large gas production effect

Active Publication Date: 2005-07-27
HUBEI HANGPENG CHEM POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the above-mentioned patents still have the disadvantages of high combustion temperature, certain dust in the gas product, low combustion rate, and poor thermal and chemical stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]Add 60% guanidine nitrate with a particle size of 3μ, 10% basic copper nitrate with a particle size of 6μ, 5% ammonium perchlorate with a particle size of 4μ, and 25% copper iron oxide with a particle size of 3μ. Porcelain rod with 25% machine volume, mixed for 2 hours, sieved out the material, and obtained evenly dispersed medicinal powder. Add 15% of water and 0.1% of paraffin wax, stir well, pass through a 40-mesh sieve after drying, and press out Φ6mm tablets in a tablet machine. The tablets are dense and smooth, and dried at 120 ° C for 2 hours. The water content is less than 0.4%. Take 40g of the gas generating agent and put it into the generator and ignite it in a 60L pressure vessel. The time to reach the maximum pressure is 65ms, the ignition delay is 5ms, and the measured CO concentration is 1.1%.

Embodiment 2

[0032] Add 55% guanidine nitrate with a particle size of 3μ, 27% basic copper nitrate with a particle size of 3μ, 3% ammonium perchlorate with a particle size of 4μ, and 15% copper iron oxide with a particle size of 3μ. Machine volume 20% of the porcelain rod, mixed for 2 hours, sieved out the material, to obtain a uniform powder. Add 15% water and 0.1% paraffin, stir well, pass through a 40-mesh sieve after drying, and press out a Φ6mm tablet in a tablet machine. The tablet is dense and smooth, and it is dried at 120°C for 2 hours. The measured water content is less than 0.40%. Take 40g of gas generating agent and put it into the generator and ignite it in a 60L pressure vessel. The time to reach the maximum pressure is 55ms, the ignition delay is 5ms, and the measured CO concentration is 0.7%.

Embodiment 3

[0034] 50% guanidine nitrate with a particle size of 5μ, 21.9% basic copper nitrate with a particle size of 6μ, 5% ammonium perchlorate with a particle size of 4μ, 25% copper iron oxide with a particle size of 2μ, and 0.1% clay with a particle size of 15μ were added to the V-type in turn. In the mixer, ceramic balls of different sizes with 10% of the volume of the V-shaped mixer were added, mixed for 2 hours, and the materials were sieved to obtain a uniform medicinal powder. Add 15% water and stir evenly, pass through a 40-mesh sieve after drying, and record a water content of 1.1%, extrude a Φ6mm tablet in a tablet machine, dry at 120°C for 2 hours for dehydration, and record a water content of 0.38%. Take 40g of gas generating agent and put it into the generator, ignite it in a 60L pressure vessel, the measured maximum pressure is 190kPa, the time to reach the maximum pressure is 58ms, the ignition delay is 5ms, and the CO concentration is 0.6%. The residue was collected wi...

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PUM

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Abstract

A non-laminated gas producing agent and its production are disclosed. The non-laminated gas producing agent consists of oxygen-enriched carbamidine nitrate 40-60% with granularity 0.5-6mu, basic copper nitrate 10-28% as oxidant with granularity 0.5-6mu, copperon oxide of catalyst with primary oxidant 15-30% with granularity 0.1-6mu, and clay or paraffin wax 0.1-3% as process assistant with granularity 1-20mu. The production is carried out by: breaking the materials, adding into mixer by proportioning, mixing, sieving by screen, adding water 10-30%, agitating, drying, sieving the dried materials by screen with 20-80 mesh to obtain medicine particles, pressing into tablets, and drying the tablets under 100-120deg.C for 1.5-2.5hrs with water content <0.4%. It achieves wide regulating range, high gas output efficiency, and clean gas composition.

Description

technical field [0001] The invention relates to a non-azide gas generating agent for an automobile safety airbag gas generator and a manufacturing process. Background technique [0002] Gas generators in automobile airbags usually use solid gas generating agents. The original gas generating agent formula is based on the sodium azide formula. The azide formula has a high burning rate and forms a solid residue that is easy to filter after burning. It is easy to be retained by the filter device in the generator, which reduces the dust content in the gas and provides working gas with low combustion temperature and clean gas. However, due to the toxicity of sodium azide, use safety and environmental protection requirements, it reacts with heavy metals to form heavy metal azide salts, such as copper azide, which has high mechanical sensitivity and can easily cause combustion and explosion accidents in production. The azide gas generating agent in the used airbags is also easy to ...

Claims

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Application Information

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IPC IPC(8): C06B33/14C06D5/06
Inventor 姚俊范智陶自成柴玉萍
Owner HUBEI HANGPENG CHEM POWER TECH
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