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Gas generation medicine for automobile safety air bag gas generator and preparation process thereof

A gas generator, automobile safety technology, applied in the generation of compressed gas, attack equipment, etc.

Active Publication Date: 2010-05-12
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

In order to reduce volume, simplify structure and reduce manufacturing cost, most of these gas generators do not have residue filtering devices, so it is very necessary to use residue-free gas-generating chemicals

Method used

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  • Gas generation medicine for automobile safety air bag gas generator and preparation process thereof
  • Gas generation medicine for automobile safety air bag gas generator and preparation process thereof
  • Gas generation medicine for automobile safety air bag gas generator and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 no residue gas-generating medicine

[0020] The solid residue in this embodiment is less than 5%, and each 60L pyrotechnic gas generator is charged with about 18g, and each 60L hybrid gas generator is charged with about 10g. See the table below for drug formulations.

[0021] component name

Material average particle size

Percentage (%)

effect

Guanidine nitrate

no requirement

21±2

main fuel

Nitroguanidine

3~5μ

10±1

auxiliary fuel

ammonium nitrate

no requirement

57±2

primary oxidant

potassium nitrate

or potassium perchlorate

no requirement

5±1

Phase Stabilizer, Combustion Accelerator

Sodium carboxymethyl cellulose

or polyvinyl alcohol

20~100μ

5±1

Adhesive

Milory Blue or Phthalo Blue

0.5~3μ

2±0.2

Accelerator

[0022] The implementation process steps of the for...

Embodiment 2

[0024] Embodiment 2 Low-residue gas-generating medicine

[0025] The solid residue of the gas-generating medicine in this embodiment is less than 10%, and each 60L pyrotechnic gas generator is filled with about 21g of medicine, and the medicine formula is shown in the table below.

[0026] component name

[0027] component name

[0028] The process steps of this embodiment are basically the same as the first half of Example 1, mainly because the molding process is different, specifically: the first step, first add 30% of the total amount of deionized water to the vacuum kneader, and turn on the kneader heating device to heat up To 90°C±5°C, add guanidine nitrate, ammonium nitrate and potassium nitrate (or potassium perchlorate), start the kneader to stir for about five minutes, and stir until the added components are completely dissolved. In the second step, add nitroguanidine and other components into the kneader, close the lid tightly, and start the vacuu...

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Abstract

The present invention discloses one kind of gas generating preparation for gas generator of automobile safety air bag. The as generating preparation of non-azide with few residue consists of guanidinenitrate, nitro guanidine, ammonium nitrate, phase stabilizer, combustion improver, adhesive and other additive. The phase stabilizer is potassium nitrate or potassium perchlorate; the combustion improver is Milori blue, phthalocyanine blue or others; the adhesive is sodium cellulose glycolate or PVA. The gas generating preparation has very high gas generating rate and few solid residue, and is especially suitable for mixed gas generator without filtering net and firework type gas generator with small size.

Description

technical field [0001] The invention relates to a gas-generating drug used in a gas generator of an automobile safety airbag and a manufacturing process thereof. The gas-generating drug has little solid residue after burning, and is especially suitable for a hybrid gas generator without a filter screen and a gas generator with a small volume. Pyrotechnic gas generator. Background technique [0002] In the past, gas generators of automobile airbags often used sodium azide gas-generating drugs. Due to the high toxicity of sodium azide and low gas-generating efficiency, this type of gas-generating drugs was gradually replaced by non-azide gas-generating drugs. Drugs are basically replaced. [0003] Generally speaking, the less solid residue after the gas-generating drug burns, the higher the gas-generating efficiency. We can roughly divide the solid residues of gas-generating drugs into multiple residues, medium residues and no residues according to the percentage content. T...

Claims

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Application Information

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