Low-temperature gas generating agent

A low-temperature gas and generating agent technology, applied in the direction of explosives, etc., can solve the problems of increased volume and weight of the generator, high burning temperature, and inability to achieve rapid inflation of large-sized airtight capsules, achieving fast inflation speed, low burning temperature, and structure. simple effect

Active Publication Date: 2018-01-16
HUBEI INST OF AEROSPACE CHEMOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the high combustion temperature of gas generating agents for automobile airbags and gas generating agents for weapon systems, a small amount of low-temperature gas can only be obtained a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] Add 48.5% of guanidine nitrate, 43% of oxalyl ammonium and 8% of copper and iron oxides to the multi-directional motion mixer, then add a porcelain rod with a volume of 25% of the mixer, mix for 2 hours, and sieve out Material, obtain powder uniformly dispersed. Add 15% of powdered water and 0.5% of paraffin and stir evenly. After drying, pass through a 40-mesh sieve, and press tablets with Ф6mm in a tablet press. The tablets are compact and have a smooth surface. They are dried at 120℃ for 2 hours. The water content is less than 0.4%. Take 600g of gas generating agent into the generator and ignite it in a 60L pressure vessel. The time to reach the maximum pressure is 0.9s, the maximum pressure is 1.21MPa, and the gas temperature in the pressure vessel is 320°C.

Example Embodiment

[0030] Example 2

[0031] Add 40.5% of guanidine nitrate, 47% of azodicarbonamide, 8% of ammonium oxalate and 3% of zinc oxide to the multi-directional motion mixer, then add the porcelain rod with 25% of the mixer volume, and mix After 2 hours, sift out the materials to obtain uniformly dispersed powder. Add 10% of the powder and 1.5% of the clay and mix well. After drying, pass through a 40-mesh sieve. Press the tablet with a size of Ф4mm. The tablet is compact and has a smooth surface. It is dried at 120℃ for 2 hours. The water content is less than 0.3%. Take 600g of gas generating agent into the generator and ignite it in a 60L pressure vessel. The time to reach the maximum pressure is 0.5s, the maximum pressure is 1.35MPa, and the gas temperature in the pressure vessel is 520℃.

Example Embodiment

[0032] Example 3

[0033] Add 60% guanidine nitrate, 25% ammonium sulfate, 4% bistetrazolium ammonium salt and 8% zinc oxide to the multi-directional motion mixer in sequence, mix for 1 hour, sieve out the materials, and obtain dispersion Uniform powder. Add 20% of the powdered water and 3% modified cellulose and stir, use an extrusion shot blasting machine to make the slurry into Ф1~Ф3 granules, and bake them at 70℃ for 3 days. The measured water content is less than 0.5%. Take 600g of the gas generating agent into the generator and ignite it in a 60L pressure vessel. The time to reach the maximum pressure is 1.0s, the maximum pressure is 1.28MPa, and the gas temperature in the pressure vessel is 380°C.

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PUM

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Abstract

A low-temperature gas generating agent comprises the following components in percentage by mass: 40 to 60% of guanidine nitrate, 25 to 55% of a combustion temperature regulator, 3 to 15% of a combustion rate regulator and 0.5 to 3% of a binder. The combustion temperature regulator can be oxamide, ammonium oxalate, ammonium sulfate, Oxalic dihydrazide and azodicarbonamide; the combustion rate regulator can be bistetrazole ammonium salt, zinc oxide and a copper and iron oxide, and the binder can be clay, paraffin and modified cellulose. The low-temperature gas generating agent has the characteristics of low combustion temperature, fast combustion rate, low solid residue content, and the like, and can meet the requirement of rapid inflating of a sealed capsule.

Description

technical field [0001] The invention relates to a low-temperature gas generating agent, which has the characteristics of low gas generation temperature, fast inflation speed, large gas generation volume, and low solid residue content, and can meet the requirements of cushioning air cushions and other special-purpose capsules, and can also be used for special energy storage devices. quick inflation. Background technique [0002] The combustion of the gas generating agent generates a large amount of gas, which can be used for different purposes according to the nature of the generated gas. For example, the gas generating agent made of potassium manganate can produce pure oxygen when burned, which can be used for first aid in the case of hypoxia; the gas generating agent made of azide or some non-azide substances has The gas is fast inflated, safe and non-toxic, and can be used in automobile airbags; some gas generants, such as gas generants, have the characteristics of a comb...

Claims

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Application Information

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IPC IPC(8): C06B31/00
Inventor 杨玲信培培吴敏王小波余剑余瑞彭焱
Owner HUBEI INST OF AEROSPACE CHEMOTECH
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