Gas generating agent composition having reduced solid discharge amount of inflator

A technology of a gas generating agent and composition, which is applied in the field of gas generating agent composition for inflators for inflating airbags, can solve problems such as increase in unit price, increase in volume and weight of inflators, highly toxic hydrazic acid, etc., and achieve protection Effects on drivers and passengers, reducing the risk of damage to airbags by high-temperature particles

Inactive Publication Date: 2016-02-24
株式会社三松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gas generating agents for early airbags used metal azide compounds such as sodium azide and potassium azide as fuel components, but this material had the following problems: not only explosion due to impact, friction, etc., but also presence of water or acid When decomposed to produce highly toxic azido acid
However, when this gas generating agent is used in an inflator, the weight of combustion residue discharged into the airbag during operation may exceed the USCAR-24 standard
Therefore, in order to filter the slag, the filter should be dense and enlarged, so the overall volume and weight of the inflator increase and the unit price increases.

Method used

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  • Gas generating agent composition having reduced solid discharge amount of inflator
  • Gas generating agent composition having reduced solid discharge amount of inflator
  • Gas generating agent composition having reduced solid discharge amount of inflator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 40.85% by weight of mixed guanidine nitrate, 41.70% by weight of basic copper nitrate (BCN, BasicCopperNitrate), 10% by weight of 5-aminotetrazole (5-Aminotetrazole), 5% by weight of phase stabilized ammonium nitrate (PSAN, Phasestabilizedammoniumnitrate), Zeolite (Zeolite) 0.5% by weight, iron oxide (Ferricoxide: Fe 2 o 3) 1% by weight, carbon black 0.75% by weight and calcium stearate (CalciumStearate) 0.2% by weight and dried at 70°C for 4 hours. The average particle diameter of the gas generating agent mixture is 10-15 μm. The dried gas generant mixture was compression-molded into a gas generant tablet (Tablet) with a diameter of 6 mm and a height of 2.4 mm with a compression molding machine, and the gas generant tablet was filled in an inflator for a 60 L tank test, and the results showed that The amount of residue discharged was 0.3 g. The average particle size of zeolite (Zeolite) is 0.5-5 μm, and the particle size of 15 μm or less is used for other raw materi...

Embodiment 2

[0054] By adding 36.48% by weight of guanidine nitrate, 41.02% by weight of basic copper nitrate (BCN, BasicCopperNitrate), 7.5% by weight of 5-aminotetrazole (5-Aminotetrazole), and 7.5% by weight of phase stabilized ammonium nitrate (PSAN, Phasestabilizedammoniumnitrate) , Zeolite (Zeolite) 5% by weight, iron oxide (Ferricoxide: Fe 2 o 3 ) 1.5% by weight, 0.8% by weight of carbon black, and 0.2% by weight of calcium stearate (CalciumStearate) 0.2% by weight to manufacture a gas generating agent in the same manner as in Example 1, and use the gas generating agent for an inflator to carry out a 60L tank test. It was shown that the amount of residue discharged was 0.2 g. The average particle size of zeolite (Zeolite) is 0.5-5 μm, and the particle size of 15 μm or less is used for other raw materials.

Embodiment 3

[0056] By mixing guanidine nitrate (Guanidinenitrate) 41.18% by weight, basic copper nitrate (BCN, BasicCopperNitrate) 41.37% by weight, 5-aminotetrazole (5-Aminotetrazole) 10% by weight, phase stabilized ammonium nitrate (PSAN, Phasestabilizedammoniumnitrate) 5% by weight , dolomite (Dolomite) 0.5% by weight, iron oxide (Ferricoxide: Fe 2 o 3 ) 1% by weight, 0.75% by weight of carbon black and 0.2% by weight of calcium stearate (CalciumStearate) and the same method as in Example 1 to manufacture a gas generating agent, and use the gas generating agent for an inflator to carry out a 60L tank test, The results showed that the amount of residue discharged was 0.5 g. The average particle size of dolomite is 0.5-5 μm, and the particle size of 15 μm or less is used for other raw materials.

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Abstract

A gas generating agent for an inflator is an explosive composition required for expanding an airbag to protect passengers when a car accident occurs. An electrical signal detected by a sensor due to a car crash may cause the ignition and combustion of an igniter, an ignition charge, and a gas generating agent of the inflator in order. Gases and a high-temperature melting compound generated by the combustion of the gas generating agent are cooled and filtered through a filter to expand the airbag. In order for the high-temperature melting compound to be effectively cooled and filtered through the filter, the high-temperature melting compound must be converted into slag. In the present invention, by converting the high-temperature melting compound into the slag by using zeolite [Na4Al4Si4O25H18] or dolomite [CaMg(CO3)2] as a slag forming agent, and allowing an amount of combustion residuals discharged into the interior of the airbag during the operation of the inflator to be equal to or less than 1g, which is a standard value specified in USCAR-24, damage to the airbag can be prevented and passengers can be effectively protected.

Description

technical field [0001] The present invention relates to a gas generant composition for an inflator that inflates an air bag by burning gas generated by combustion of a signal detected when a vehicle collides, and more specifically relates to a gas generant composition having an appropriate combustion rate and generating gas during the operation of the inflator. A gas generant composition that is a large amount of gas that is harmless to the human body, has combustion characteristics that exhibit ideal airbag deployment pressure and retention time, and produces a filterable product in the form of slag. This application claims the benefit of the filing date of Korean Patent Application No. 10-2013-0057024 filed with the Korean Intellectual Property Office on May 21, 2013, the entire contents of which are incorporated in this specification. Background technique [0002] A gas generating agent for an airbag installed for the purpose of protecting the occupants of a vehicle is ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06D5/00C06B23/00B60R21/00
CPCB60R21/26B60R2021/26011C06B23/001C06D5/06B60R21/00C06B23/00C06D5/00
Inventor 尹智慧李荣镐李昇宰
Owner 株式会社三松
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