CN102666439A - Gas-generating agent composition - Google Patents
Gas-generating agent composition Download PDFInfo
- Publication number
- CN102666439A CN102666439A CN201080052885XA CN201080052885A CN102666439A CN 102666439 A CN102666439 A CN 102666439A CN 201080052885X A CN201080052885X A CN 201080052885XA CN 201080052885 A CN201080052885 A CN 201080052885A CN 102666439 A CN102666439 A CN 102666439A
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- China
- Prior art keywords
- ammonium nitrate
- nitrogen
- containing organic
- organic compound
- gas
- Prior art date
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06D—MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART)
- C06D5/00—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets
- C06D5/06—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets by reaction of two or more solids
Abstract
Disclosed is a gas-generating agent composition in which the pressure index and the dependence of the burning rate on pressure are extremely low. The gas generating composition, which comprises a nitrogen-containing organic compound as fuel and an ammonium nitrate as an oxidizing agent, is characterized in that the ratio of the nitrogen-containing organic compound and the ammonium nitrate (former/latter; weight ratio) is no more than 35/65. In the gas-generating agent composition, a copper compound may be further combined in a ratio in the range of more than 0 parts by weight to 30 parts by weight per 100 parts by weight of the total amount of the nitrogen-containing organic compound and the ammonium nitrate. A basic copper nitrate is preferable as the aforementioned copper compound. Additionally, a guanidine derivative, particularly a guanidine nitrate, is preferable as the aforementioned nitrogen-containing organic compound.
Description
Technical field
The present invention relates to be applicable to the gas generant composition of the producer gas generator (inflator) of air bags such as car applications.
Background technology
Gas-bag system as being equipped on the vehicles such as automobile is used gas generant composition, is developing non-azide class gas-evolution agent and is replacing the in-problem sodiumazide in toxicity aspect.As non-azide class gas-evolution agent, proposed following with nitrogen-containing organic compounds such as guanidine derivative, tetrazolium class act as a fuel, with the gas generant composition of an ammonium nitrate as oxygenant.
On the other hand, consider the stability of the developing time of special demands air bag from security.Developing time depends on the combustionvelocity of gas-evolution agent.The influence that this combustionvelocity is under pressure usually easily, the relation of combustionvelocity and pressure is represented with following formula (1).
r＝aP
n （1）
(in the formula, r representes combustionvelocity, and P representes combustion pressure, and a representes constant, and n representes pressure index)
A is kind, initial temperature and the different constant according to gas generant composition.Thus, the influence that the combustionvelocity of gas-evolution agent is under pressure, according to the situation of airbag deployment, it is unstable that developing time becomes thereupon.But under the less situation of the pressure index n of above-mentioned formula (1), the combustionvelocity of gas-evolution agent diminishes to the dependency of pressure, can obtain the stable airbag deployment time.
A kind of gas generant for air cell compsn is disclosed in the japanese kokai publication hei 11-292678 communique; The silicon compound that it contains guanidine derivative compound, phase stabilization an ammonium nitrate and plays a role as pressure index regulator or the suppressor factor that detonates, the combustion pressure P that is obtained by above-mentioned formula (1) of this gas generant composition is at 50 ~ 70kg/cm
2In the scope, pressure index n is below 0.95.But in an embodiment, the minimum value of n is 0.429, needs applying pressure index regulator, and in addition, an ammonium nitrate need use through the kind after the phase stabilization.
Disclose phase stabilization composition such as high oxidation fuel, cerous nitrates such as containing an ammonium nitrate, Guanidinium nitrate, aminoguanidine nitrate in the Japan special table 2002-522330 communique and be selected from copper or the gas generating composition of the catalyzer of copper compound.But the minimum value of the pressure index shown in the embodiment is 0.56, and in addition, phase stabilization composition is essential.
A kind of gas generant composition is disclosed in No. 4248254 communique of Japanese Patent; It contains nitrogen-containing organic compound fuel and oxygenant; Wherein, The part of said oxygenant or all is with an ammonium nitrate and basic copper nitrate mixing, and under 120 ℃ to 160 ℃ temperature, carries out heat treated and the thermal treatment oxygenant that obtains.But, do not mention pressure index in the document fully, in addition, oxygenant need be heat-treated.
A kind of gas generant composition is disclosed in the TOHKEMY 2009-137819 communique; It contains fuel and the tackiness agent that comprises an ammonium nitrate; Wherein, said tackiness agent contains the sylvite of the water-soluble polymers that the phase stabilization agent as said an ammonium nitrate plays a role.But the document is not mentioned pressure index fully yet, and in addition, an ammonium nitrate needs the phase stabilization agent.
The prior art document
Patent documentation
Patent documentation 1: japanese kokai publication hei 11-292678 communique
Patent documentation 2: Japan special table 2002-522330 communique
Patent documentation 3: No. 4248254 communique of Japanese Patent
Patent documentation 4: TOHKEMY 2009-137819 communique
Summary of the invention
The problem that invention will solve
The object of the present invention is to provide the gas generant composition that pressure index is very little, combustionvelocity is extremely low to the dependency of pressure.
Another object of the present invention is to provide and have above-mentioned characteristic, prepare more or less freely gas generant composition simultaneously.
The method of dealing with problems
In order to achieve the above object; The inventor etc. further investigate; The result finds: for contain the nitrogen-containing organic compound that acts as a fuel, as the gas generant composition of an ammonium nitrate of oxygenant, if the ratio of nitrogen-containing organic compound and an ammonium nitrate is set at below the particular value, even then do not implement to add the special processing to material composition of pressure index regulator etc.; Also can obtain the significantly reduced gas generant composition of pressure index, thereby accomplish the present invention.
That is, the present invention provides a kind of gas generant composition, and it contains the nitrogen-containing organic compound that acts as a fuel, as an ammonium nitrate of oxygenant, and the ratio of nitrogen-containing organic compound and an ammonium nitrate (the former/latter, weight ratio) be below 35/65.
For this gas generant composition, an ammonium nitrate can in addition, also can not contain the pressure index regulator without the phase stabilization treatment.
In this gas generant composition, with respect to total amount 100 weight parts of nitrogen-containing organic compound and an ammonium nitrate, further to be mixed with copper compound greater than 0 weight part and the ratio below 30 weight parts.
As said copper compound, preferred basic copper nitrate.In addition, as said nitrogen-containing organic compound, preferred guanidine derivative, preferred especially Guanidinium nitrate.
The invention effect
According to the present invention, the ratio of nitrogen-containing organic compound and an ammonium nitrate is below the particular value, so pressure index compares very for a short time with currently available products, and combustionvelocity is extremely low to the dependency of pressure.Therefore, can obtain the air bag of the excellent in stability of developing time.
The embodiment of invention
Gas generant composition of the present invention contains the nitrogen-containing organic compound that acts as a fuel, as an ammonium nitrate of oxygenant.
As as the nitrogen-containing organic compound of fuel, can use the nitrogen-containing organic compound of known fuel as gas-evolution agent such as for example guanidine derivative, tetrazolium class, triazole species, hydrazine derivative, pyrrolotriazine derivatives etc.Nitrogen-containing organic compound can use separately or combination use more than 2 kinds.In above-mentioned nitrogen-containing organic compound, preferred especially guanidine derivative.
As guanidine derivative, can enumerate for example Guanidinium nitrate, Guanidinium carbonate, guanidine perchlorate, nitroguanidine, amino nitroguanidine, aminoguanidine nitrate, aminoguanidine sulfate, aminoguanidine perchlorate, Imidocarbonic acid dihydrazide nitrate salt, Imidocarbonic acid dihydrazide carbonate, Imidocarbonic acid dihydrazide perchlorate, triaminoguanidine nitrate salt, triaminoguanidine perchlorate etc.Wherein, preferred especially Guanidinium nitrate.
With respect to all gas propellant compsn, the consumption of said nitrogen-containing organic compound is preferably 7 ~ 33 weight % for for example 5 ~ 35 weight %, more preferably about 8 ~ 30 weight %.
In gas generant composition of the present invention, use an ammonium nitrate as oxygenant.Produce the high oxygenant of efficient though an ammonium nitrate is gas, a plurality of phase transition temperatures are arranged near room temperature, when through said transition point, bigger volume change can take place, cause the unstable properties of compsn easily.Therefore,, suppress volume change, use an ammonium nitrate usually through the phase stabilization treatment for when phase transition point is changed.
But,, also can obtain desired effect even an ammonium nitrate is not carried out the phase stabilization treatment for gas generant composition of the present invention.But,, also can obtain desired effect even carry out the phase stabilization treatment.
When an ammonium nitrate is carried out the phase stabilization treatment; Can handle the mixture that contains an ammonium nitrate, phase stabilization agent through adopting the proper physical method; For example under heating (for example, more than 50 ℃ and be lower than 120 ℃, preferably more than 80 ℃ and under the temperature below 110 ℃); Make the aqueous solution evaporate, drying of an ammonium nitrate, phase stabilization agent etc. etc., obtain an ammonium nitrate through the phase stabilization.
As the phase stabilization agent, can enumerate sylvite such as saltpetre, potassium perchlorate, Potcrate, potassiumchromate, SRM 935a, potassium permanganate, vitriolate of tartar, Repone K, Potassium monofluoride; Cerium salt such as cerous nitrate, perchloric acid cerium etc.
An ammonium nitrate and stabilization agent mutually are (for example; Be selected from the phase stabilization agent of sylvite and cerium salt) mixture ratio; Suitably set in the scope that can in practicality, not have problems at the residue in when burning; Usually, an ammonium nitrate/phase stabilization agent (weight ratio)=70/30 ~ 98/2, the scope of preferred an ammonium nitrate/phase stabilization agent (weight ratio)=80/20 ~ 97/3.In the present invention, as stated, even an ammonium nitrate is not carried out the phase stabilization treatment; Also can obtain desired effect, therefore, even use the phase stabilization agent; An ammonium nitrate/phase stabilization agent (weight ratio) also can be the value (for example, above-mentioned ratio is more than 99/1) greater than 98/2.
Can mix anti-solidifying agent in an ammonium nitrate.As anti-solidifying agent, for example can enumerate Natural manganese dioxide, powder silicon-dioxide etc.With respect to whole an ammonium nitrate, the blending ratio of anti-solidifying agent is preferably about 0.1 ~ 1.0 weight % for for example 0.05 ~ 2.0 weight %.
With respect to all gas propellant compsn, the consumption of an ammonium nitrate is preferably 45 ~ 85 weight % for for example 40 ~ 90 weight %, more preferably about 50 ~ 75 weight %.
In the present invention, the nitrogen-containing organic compound that acts as a fuel and be important below 35/65 as the ratio of an ammonium nitrate of oxygenant (the former/latter, weight ratio).Known an ammonium nitrate is the oxygenant that the variation of pressure index height, combustionvelocity is responsive with respect to pressure change, be difficult to carry out stable burning; If but the ratio of nitrogen-containing organic compound that acts as a fuel and an ammonium nitrate is set in the above-mentioned scope; It is shocking that above-mentioned pressure index n is the mnm. of (for example, 0.3 ~ 0.45) below 0.45; Can reduce the dependency (for example, the pressure range of 1 ~ 9MPa) of combustionvelocity significantly to pressure.Need to prove, if the ratio of nitrogen-containing organic compound and an ammonium nitrate greater than 35/65, then pressure index n sharply increases, and for example is about 0.65 ~ 0.75 or higher value.
The ratio of above-mentioned nitrogen-containing organic compound and an ammonium nitrate (the former/latter, weight ratio) preferably in the scope below 30/70.The lower limit of the ratio of above-mentioned nitrogen-containing organic compound and an ammonium nitrate (the former/latter, weight ratio) does not have special qualification, but in order to guarantee ignition quality, is about 20/80 in the practicality.
In the present invention, if in gas generant composition, further mix copper compound, can improve ignition quality significantly as combustion improver.As copper compound, can enumerate for example basic copper nitrate, ventilation breather, cupric oxide, verditer, copper sulfate, cupric nitrate etc.Wherein, preferred especially basic copper nitrate.Need to prove; In the present invention; Such as in No. 4248254 communique of above-mentioned Japanese Patent record, even in 120 ℃ ~ 160 ℃ TR, an ammonium nitrate and above-mentioned copper compound are not carried out heat treated, only make its coexistence (even the heating also be lower than 120 ℃; For example below 115 ℃), also can obtain sufficient and stable incendivity.
With respect to total amount 100 weight parts of nitrogen-containing organic compound and an ammonium nitrate, the combined amount of copper compound greater than 0 weight part and below 30 weight parts, is preferably 15 ~ 30 weight parts, more preferably 15 ~ 25 weight parts for for example.
Gas generant composition of the present invention can also contain other additive etc. as required.Need to prove; Because gas generant composition of the present invention uses nitrogen-containing organic compound and an ammonium nitrate in specific ratio; Therefore; Even do not contain pressure index regulator (for example, the silicon compound of putting down in writing in the japanese kokai publication hei 11-292678 communique that is selected from silicon nitride, ZGK 5, silit, silicon-dioxide, silicates and silicates clay mineral) especially, can obtain minimum pressure index yet.But, also can contain above-mentioned pressure index regulator, in this case, the content of the above-mentioned pressure index regulator in the gas generant composition can be lower than 0.3 weight % (for example below the 0.2 weight %).
Gas generant composition of the present invention can be shaped to desired shape.As forming method, have no particular limits, for example can adopt extrusion forming, compression molding, extrusion moulding etc.Shape as the gas-evolution agent after the moulding has no particular limits, and for example can enumerate particulate state, hollow cylindrical, porous circular cylinder shape etc.Gas-evolution agent after the moulding also can be (One grain) type.But the surface-area in burning as spherical, the flat sugared shape of gold, quadrangular pyramid body shape changes the reason that great shape can become pressure change, and is not preferred.
Embodiment
Below the present invention will be described in more detail based on embodiment, but the present invention does not receive the restriction of these embodiment.
Embodiment 1 ~ 5, comparative example 1 ~ 4
Use Guanidinium nitrate (abbreviating " GN " sometimes as), an ammonium nitrate (abbreviating " AN " sometimes as), reach basic copper nitrate (abbreviating " BCN " sometimes as), obtain the gas generant composition of forming shown in the table 1 through dry mixed.Use the oil pressure barrel, at 100kg/cm
2Pressure under, with these compsn compression mouldings for highly being about the material thigh that 12.7mm, diameter are about 10mm.Then, coating uninflammability redix on the surface of material thigh.Under the nitrogen atmosphere of setting pressure, measure combustionvelocity (mm/s).Following relational expression (1) based on combustionvelocity (mm/s) and pressure (MPa)
r＝aP
n （1）
(in the formula, r representes combustionvelocity, and P representes combustion pressure, and a representes constant, and n representes pressure index), obtain the value of pressure index n and constant a.Need to prove, carry out in the scope that is determined at combustion pressure 1MPa ~ 9MPa of combustionvelocity.The result is shown in Table 1.
Table 1
As shown in table 1; The ratio of Guanidinium nitrate (GN) and an ammonium nitrate (AN) (the former/latter, weight ratio) greater than 35/65 o'clock, pressure index n was about 0.65 ~ 0.75; But above-mentioned ratio is a boundary with 35/65; If be lower than this value, then pressure index n sharply reduces, and demonstrates 0.3 ~ 0.45 minimum value.
Industrial applicibility
Gas generant composition of the present invention, the gas-evolution agent that obtains by its moulding; For example can be used for, the gas generator for air bag of the gas generator for air bag of car steering position, copilot position, installing side airbag with producer gas generator, curtain type gas bag with producer gas generator, kneepad with producer gas generator, inflatable seat belt with producer gas generator, tubular system with producer gas generator, preloader with producer gas generator etc.
Claims (6)
1. gas generant composition, it contains the nitrogen-containing organic compound that acts as a fuel, as an ammonium nitrate of oxygenant, wherein, the ratio of nitrogen-containing organic compound and an ammonium nitrate (the former/latter, weight ratio) be below 35/65.
2. gas generant composition according to claim 1, wherein, an ammonium nitrate does not pass through the phase stabilization treatment.
3. gas generant composition according to claim 1 and 2, it does not contain the pressure index regulator.
4. according to each described gas generant composition in the claim 1 ~ 3, wherein, with respect to total amount 100 weight parts of nitrogen-containing organic compound and an ammonium nitrate, further to be mixed with copper compound greater than 0 weight part and the ratio below 30 weight parts.
5. gas generant composition according to claim 4, wherein, copper compound is a basic copper nitrate.
6. according to each described gas generant composition in the claim 1 ~ 5, wherein, nitrogen-containing organic compound is a Guanidinium nitrate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009269975A JP5481723B2 (en) | 2009-11-27 | 2009-11-27 | Gas generant composition |
| JP2009-269975 | 2009-11-27 | ||
| PCT/JP2010/070659 WO2011065298A1 (en) | 2009-11-27 | 2010-11-19 | Gas-generating agent composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102666439A true CN102666439A (en) | 2012-09-12 |
Family
ID=44066402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080052885XA Pending CN102666439A (en) | 2009-11-27 | 2010-11-19 | Gas-generating agent composition |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20120261040A1 (en) |
| JP (1) | JP5481723B2 (en) |
| CN (1) | CN102666439A (en) |
| DE (1) | DE112010004588T5 (en) |
| WO (1) | WO2011065298A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106608775A (en) * | 2015-10-21 | 2017-05-03 | 湖北航天化学技术研究所 | Clean heat and gas generation agent |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5755537B2 (en) * | 2011-09-12 | 2015-07-29 | 蝶理株式会社 | Non-dangerous nitrate production method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1236767A (en) * | 1998-04-15 | 1999-12-01 | 大赛璐化学工业株式会社 | Gas generating composition for air bag |
| CN1503768A (en) * | 2001-04-20 | 2004-06-09 | �ձ���ҩ��ʽ���� | Gas generator composition |
| CN1544271A (en) * | 2003-11-13 | 2004-11-10 | 西安北方庆华电器（集团）有限责任公 | Gas generating powder used for gas generator of automobile safety airbag and preparation method thereof |
| CN1868980A (en) * | 2001-11-30 | 2006-11-29 | 大赛璐化学工业株式会社 | Inflator and airbag system |
| CN1927779A (en) * | 2006-02-22 | 2007-03-14 | 上海东方久乐汽车安全气囊有限公司 | Gas generation medicine for automobile safety air bag gas generator and preparation process thereof |
| CN101041608A (en) * | 2007-03-13 | 2007-09-26 | 西安北方庆华机电集团有限公司 | Aerogenesis composition containing single substance and method of making the same |
| CN101157589A (en) * | 2006-10-07 | 2008-04-09 | 上海东方久乐汽车安全气囊有限公司 | Gas production drug for automobile safety airbag gas generator and process for manufacturing same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04248254A (en) | 1991-01-24 | 1992-09-03 | Shin Kobe Electric Mach Co Ltd | Hermetic type lead-acid battery and connecting method therefor |
| US6136113A (en) | 1998-08-07 | 2000-10-24 | Atlantic Research Corporation | Gas generating composition |
| US20060208474A1 (en) * | 2003-12-24 | 2006-09-21 | Nippon Kayaku Kabushiki Kaisha | Gas producer |
| JP2009137819A (en) | 2007-12-11 | 2009-06-25 | Daicel Chem Ind Ltd | Gas generating agent composition |
-
2009
- 2009-11-27 JP JP2009269975A patent/JP5481723B2/en active Active
-
2010
- 2010-11-19 WO PCT/JP2010/070659 patent/WO2011065298A1/en active Application Filing
- 2010-11-19 DE DE112010004588T patent/DE112010004588T5/en not_active Withdrawn
- 2010-11-19 CN CN201080052885XA patent/CN102666439A/en active Pending
- 2010-11-19 US US13/508,939 patent/US20120261040A1/en not_active Abandoned
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1236767A (en) * | 1998-04-15 | 1999-12-01 | 大赛璐化学工业株式会社 | Gas generating composition for air bag |
| CN1503768A (en) * | 2001-04-20 | 2004-06-09 | �ձ���ҩ��ʽ���� | Gas generator composition |
| CN1868980A (en) * | 2001-11-30 | 2006-11-29 | 大赛璐化学工业株式会社 | Inflator and airbag system |
| CN1544271A (en) * | 2003-11-13 | 2004-11-10 | 西安北方庆华电器（集团）有限责任公 | Gas generating powder used for gas generator of automobile safety airbag and preparation method thereof |
| CN1927779A (en) * | 2006-02-22 | 2007-03-14 | 上海东方久乐汽车安全气囊有限公司 | Gas generation medicine for automobile safety air bag gas generator and preparation process thereof |
| CN101157589A (en) * | 2006-10-07 | 2008-04-09 | 上海东方久乐汽车安全气囊有限公司 | Gas production drug for automobile safety airbag gas generator and process for manufacturing same |
| CN101041608A (en) * | 2007-03-13 | 2007-09-26 | 西安北方庆华机电集团有限公司 | Aerogenesis composition containing single substance and method of making the same |
Non-Patent Citations (1)
| Title |
|---|
| YUSUKE WADA ET AL.: "《Shosan Ammonium, Shosan Guanidine no Netsubunkai Tokusei》", 《JAPAN EXPLOSIVES SOCIETY 2009 NENDO SHUNKI KENKYU HAPPYOKAI KOEN YOSHISHU》, vol. 59, 21 May 2009 (2009-05-21), pages 61 - 62 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106608775A (en) * | 2015-10-21 | 2017-05-03 | 湖北航天化学技术研究所 | Clean heat and gas generation agent |
| CN106608775B (en) * | 2015-10-21 | 2019-06-04 | 湖北航天化学技术研究所 | A kind of cleaning heat production gas generating agent |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112010004588T5 (en) | 2012-11-22 |
| JP2011111371A (en) | 2011-06-09 |
| JP5481723B2 (en) | 2014-04-23 |
| US20120261040A1 (en) | 2012-10-18 |
| WO2011065298A1 (en) | 2011-06-03 |
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Application publication date: 20120912 |