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Gas producing composition and its preparation method

A technology of gas-generating composition and content, which is applied to attack equipment, generation of compressed gas, explosives, etc., can solve the problems of high production cost, low production efficiency of gas-generating powder, etc., and achieves performance improvement, excellent ignition performance, and thermal stability. good effect

Active Publication Date: 2008-03-26
河北东方久乐瑞丰汽车安全部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Another object of the present invention is to provide a method for preparing a gas-generating composition. In the production process, twin-screw continuous extrusion is suitable for kneading and extrusion, and the production process of rolling into sheets and extrusion can also be used to solve the problem. Low production efficiency and high production cost of gas-generating drugs in tablet production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The gas generating composition described in this embodiment comprises 30% guanidine nitrate, 13% nitroguanidine, 4% dicyandiamide, 34% basic copper nitrate, 3% ferric oxide, 6% copper oxide, 5% Sodium Nitrate, 1.5% Superfine High Purity Aluminum Oxide, 3.5% Sodium Carboxymethyl Cellulose. The average particle diameter of the raw material is 1.4 μm, and the purity of aluminum oxide is 99.99%, and the average particle diameter is 1.6 μm.

[0064] The processing process is: first mix the above raw materials according to the different properties of fuel, oxidant, ignition improver, and binder, and then perform preliminary mixing in a vertical mixer, and add distilled water for mixing, and the water content is controlled. Incubate at 20% at 40°C for 6 hours.

[0065] Then use plunger extrusion, the extrusion pressure is 8Mpa, the jacket temperature is about 40°C, and the air-drying method is used to drive water, so that the moisture content of the extrudate is reduced to ab...

Embodiment 2

[0072] The gas generating composition described in this embodiment includes 45% guanidine nitrate, 5% nitroguanidine, 3% pentaaminotetrazole, 25% basic copper nitrate, 11% sodium nitrate, 3% calcium perchlorate, 6 % Zinc Oxide, 0.5% Copper Chloride, 1.5% Food Grade Guar Gum. The average particle diameter of the raw material was 6 μm.

[0073] The processing process is as follows: firstly mix the above raw materials according to the different properties of fuel, oxidant, ignition improver and binder, and then perform preliminary mixing in a vertical screw mixer, and add distilled water for mixing. Control at 30%, and keep warm at 75°C for 4.5 hours.

[0074] Then use twin-screw extrusion molding, the extrusion pressure is 10Mpa, the jacket temperature is about 40°C, and the vacuum method is used to drive water, so that the moisture content of the extrudate is reduced to about 10%, and the extrusion diameter is 3mm. , The formed shape is a cylinder with a quincunx-shaped throu...

Embodiment 3

[0080] Same as Example 2, the difference is that the gas generating composition described in this example includes 12% guanidine aminonitrate, 18% ammonium oxalate, 10% pentaaminotetrazole, 25% basic copper nitrate, 18% copper oxide , 10% manganese oxide, 5% copper chromate, 2% guar gum. The average particle diameter of the raw material was 20 μm.

[0081] The preparation process is the same as in Example 2.

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Abstract

An aerogenic composition used for protecting the passengers in coach and airplane is prepared from fuel, oxidant, ignition improver and adhesive. Its preparing process is also disclosed. Its advantages are high air output and high properties.

Description

technical field [0001] The invention relates to a gas-generating composition and a preparation method thereof, in particular to a gas-generating drug used in an airbag gas generator for protecting passengers in automobiles and airplanes and a preparation method thereof. Background technique [0002] As we all know, the airbags used in automobiles include pyrotechnic airbags and hybrid airbags. Among them, the pyrotechnic airbag is to use the gas generated by the combustion of the gas-generating agent to fill the airbag instantly to protect the occupants; the hybrid airbag is to mix the hot gas generated by the combustion of the gas-generating agent and the compressed cold air preset in the sealing device to fill the airbag , so as to achieve the protection of passengers. [0003] The gas-generating agents used in airbags belong to the category of pyrotechnic agents, and have many similarities with military composite gunpowder. As a pyrotechnic agent, the gas-generating age...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06D5/06C06B43/00C06D5/00
Inventor 张根发张海龙刘忠张玉红刘建斌牛京博钱丽苹
Owner 河北东方久乐瑞丰汽车安全部件有限公司
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