low temperature gas generating agent

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

Active Publication Date: 2019-10-11
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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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 after cooling measures such as wire mesh, which leads to a substantial increase in the volume and weight of the generator, and it is impossible to achieve large-sized airtight capsules. quick inflation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 48.5% guanidine nitrate, 43% ammonium oxalamide and 8% copper iron oxide into the multi-directional motion mixer in turn, then add a porcelain rod with 25% volume of the mixer, mix for 2 hours, and sieve out Materials, to obtain uniformly dispersed powder. Add 15% of water and 0.5% of paraffin wax and stir evenly, pass through a 40-mesh sieve after drying, and press out Ф6mm 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 600g 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 0.9s, the maximum pressure is 1.21MPa, and the gas temperature in the pressure vessel is 320°C.

Embodiment 2

[0031] Add 40.5% of guanidine nitrate, 47% of ammonium azodiformamide, 8% of ammonium oxalate and 3% of zinc oxide into the multi-directional motion mixer in sequence, then add a porcelain rod with 25% of the volume of the mixer, and mix After 2 hours, the material was sieved to obtain a uniformly dispersed medicinal powder. Add 10% water and 1.5% clay, mix well, pass through a 40-mesh sieve after drying, and press out Ф4mm tablets in a tablet machine. The tablets are dense and smooth, and dried at 120°C for 2 hours. Measured The water content is less than 0.3%. Take 600g 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 0.5s, the maximum pressure is 1.35MPa, and the gas temperature in the pressure vessel is 520°C.

Embodiment 3

[0033] Add 60% of guanidine nitrate, 25% of ammonium sulfate, 4% of bistetrazolium ammonium salt and 8% of zinc oxide into the multi-directional motion mixer in sequence, mix for 1 hour, sieve the material out, and obtain the dispersed Uniform and consistent powder. Add 20% water and 3% modified cellulose and mix well, use extrusion shot blasting machine to make the slurry into Ф1~Ф3 particles, bake at 70°C for 3 days, and the measured water content is less than 0.5%. Take 600g of gas generant 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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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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Patent Type & Authority Patents(China)
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 CHEMOTECHNOLOGY
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