CN101041608A - Aerogenesis composition containing single substance and method of making the same - Google Patents
Aerogenesis composition containing single substance and method of making the same Download PDFInfo
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- CN101041608A CN101041608A CN 200710017492 CN200710017492A CN101041608A CN 101041608 A CN101041608 A CN 101041608A CN 200710017492 CN200710017492 CN 200710017492 CN 200710017492 A CN200710017492 A CN 200710017492A CN 101041608 A CN101041608 A CN 101041608A
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Abstract
The invention discloses a making method of composition with monomer, which is characterized by the following: setting the gas-generating temperature between 720 deg.c and 910 deg.c; making the slag quantity below 15%; blending one metal monomer or non-metal monomer and guanidine derivant and nitrate; removing adhesive, caoline as flame-assisting agent, acid carclazyte, silicate and metal oxide; adopting double-screw rod to squeeze and knead continuously; fitting for making gas-bag generator to protect passengers in the automobile and airplane.
Description
Technical field
The present invention relates to a kind of air bag gas-generating agent composition and preparation thereof; particularly a kind of gas-generating agent composition that contains simple substance and preparation method thereof; making this gas-generating agent composition of institute launches airbag inflation by burning generation gaseous constituent; be a kind of new gas-generating agent composition, said composition can be widely used in be used for protecting human body as automobile, aircraft safety gas-bag system.
Background technology
The configuration of automobiles airbag system has become standard configuration at present, when producing collision at high-speed running automobile, gasbag fast aeration under the effect of gas-generating agent composition in the automobile air-bag system expands and launches, and prevents because inertia causes and takes the people in the car and come to harm.Therefore, for lacking the action time that the air bag gas generating agent requires, be generally 40ms to 50ms, and want big in the gas production rate of this time range, the smog of generation will lack, and the temperature of aerogenesis is low, combustionvelocity, combustion pressure are suitable, and flame sensitivity is moderate, and it is little or the like that mechanical sensitivity, friction sensitivity are wanted.
The gas-generating agent composition of car airbag system use at present is non-nitrine class gas-generating agent composition, because the toxicity of nitrine compounds itself and a kind of deleterious by product of meeting generation in gas combustion process, making such contain nitrine class gas-generating agent composition can not be as the gas generating agent of car safety air bag use, therefore, gas-bag system uses that to contain nitrine class gas-generating agent composition be to generally acknowledge a class gas-generating agent composition of eliminating.
The non-nitrine class gas gas-generating agent composition that uses has multiple at present, as the United States Patent (USP) (patent No.: US4,909,549) a kind of hydrogeneous tetrazolium or triazole compounds and the gas-generating agent composition that contains oxygenant are disclosed, United States Patent (USP) (the patent No.: US 4,369,079) disclose a kind of composition that comprises hydrogenous pair of tetrazolium metal-salt and oxygen containing oxygenant, United States Patent (USP) (patent No.: US 646836913) discloses a kind of gas-generating agent composition that contains guanidine derivatives, phase stable ammonium nitrate, silicon compound.Chinese patent (application number: 2003801023928.2) disclose and contain nitroguanidine, strontium nitrate, a kaolinic class gas-generating agent composition, Chinese patent (application number: 200410049386) a kind of a kind of gas-generating agent composition that contains Guanidinium nitrate, strontium nitrate is disclosed, Japanese Patent (patent No.: JP-A-4-265292) disclose a kind of by tetrazolium and triazole derivative and a kind of oxygenant and slag former.
No matter the gas-generating agent composition that above patent relates to is to use azole compounds, also is to use guanidine derivatives, will discharge a large amount of heat in combustion processes.For the big gas generating agent of combustion heat value, when the design producer gas generator, just require optional thermal component, can not accomplish the miniaturization of producer gas generator.
Present most of gas-generating agent composition is made up of gas generating agent, oxygenant, ignition dope, slag former, tackiness agent, promptly except main gas generating agent, some additives have been increased, as silicide as the inhibitor that detonates, the oxide compound of ignition dope, the kaolin of slag former, acidic white earth etc.These additives can be optimized some performance of gas-generating agent composition, but the affiliation that adds of these additives causes the aerogenesis temperature increase of gas-generating agent composition and the increase of level of residue, or cause the combustionvelocity of gas-generating agent composition slack-off, the efficiency of combustion step-down.
Therefore, seek that a kind of aerogenesis temperature is lower, efficiency of combustion is better, faster, the level of residue gas-generating agent composition still less of combustionvelocity, becomes insider's the focus of attention.
Summary of the invention
Defective or deficiency at above-mentioned prior art existence, the objective of the invention is to, provide a kind of be used for gas-bag system contain gas-generating agent composition of simple substance and preparation method thereof, the said composition that makes can improve efficiency of combustion and reduce the aerogenesis temperature, make it reach minimumization of aerogenesis temperature, best performanceization, and make the level of residue of gas-generating agent composition reduce to minimum.
Above-mentioned purpose can be achieved by the following technical programs:
1. gas-generating agent composition that contains simple substance, the said composition that the said composition that it is characterized in that making makes is 720 ℃～910 ℃ for the aerogenesis temperature, and level of residue is below 15%, and it is mixed by following component and weight percent thereof and forms:
(a) as the guanidine derivatives of aerogenesis component, its granularity is that content is 23%～38% between 5 μ m～15 μ m; Described guanidine derivatives is selected from one or more compounds of Guanidinium nitrate, nitroguanidine, nitric acid triaminoguanidine, dicyanodiamide, Guanidinium carbonate, amino-guanidine nitrate, diamino Guanidinium nitrate, triamino Guanidinium nitrate or nitric acid ammonium nitrate guanidine ex hoc genus anne material;
(b) nitrate that uses as oxygenant, its granularity is 5 μ m～35 μ m, content is 41%～58%; Described nitrate is selected from one or more compounds of saltpetre, ammonium nitrate, strontium nitrate, SODIUMNITRATE and similar compound;
(c) non-metal simple-substance or the metal simple-substance that uses as ignition dope, slag former, scorification agent, its specific surface area is 17500cm
2/ g～23500cm
2/ g is converted between particle size diameter 1.0 μ m～4 μ m, and content is 2%～25%; Described non-metal simple-substance or metal simple-substance are selected from wherein a kind of of silicon, aluminium, magnesium, copper, boron;
(d) tackiness agent, its content are 2%～15%; Described tackiness agent is selected from wherein a kind of of Xylo-Mucine, cellulose acetate, cellulose acetate butyrate, methylcellulose gum, Natvosol.
The above-mentioned preparation method who contains the gas-generating agent composition of simple substance is characterized in that, comprises the following steps:
Select guanidine derivatives to select Guanidinium nitrate 8%～13%, nitroguanidine 15%～25%, its granularity is between 5 μ m～15 μ m, and nitrate is selected saltpetre, strontium nitrate, SODIUMNITRATE for use, requires granularity at 5 μ m～35 μ m; It is 17500cm that selected simple substance requires specific surface area
2/ g～23500cm
2/ g is converted between particle size diameter 1.0 μ m～4 μ m; Tackiness agent is selected Xylo-Mucine, and content is 4%～10%;
Get ammonium nitrate, saltpetre, Guanidinium nitrate and be dissolved in an amount of water, the method for shearing by high-speed shearing machine makes saltpetre, ammonium nitrate, Guanidinium nitrate form suspension liquid, and this suspension liquid size range is between 5 μ m～15 μ m;
With the above-mentioned suspension liquid that obtains and nitroguanidine, strontium nitrate, Xylo-Mucine, carry out wet mixing and obtain uniform gas-generating agent composition, when moisture 15% left and right sides, adopt the plunger tpe extruding, the pressure of extruding is 8Mpa, oven dry, pelletizing, drying obtain the long 5mm that is, diameter is the particle of 3mm, being the aerogenesis temperature is 720 ℃～910 ℃, and level of residue is the gas-generating agent composition below 15%.
The starting material that the present invention has adopted nitrate to fill a prescription as conducts such as ignition dope, slag formers as gas generating agent, metal or non-metal simple-substance as oxygenant (part wherein being arranged also as the aerogenesis component), guanidine derivatives, make the temperature of gas-generating agent composition aerogenesis low, high combustionvelocity and efficiency of combustion, the gas-generating agent composition that residue is few.On production technique, suit to have adopted continuously extruded kneading of twin screw to extrude; the also production technique that can adopt the rod tablet forming to extrude; gas-generating agent composition of the present invention can be used in automobile, the aircraft air bag generator with the protection passenger, also can be used for the producer gas generator of other types.
Description of drawings
Fig. 1 is that the gas-generating agent composition that contains simple substance of the present invention is measured P-T curve test result combustion time.
Below in conjunction with embodiment and reference examples that the contriver provides the present invention is done to describe in detail more specifically, yet the present invention is not limited to or is subject to these embodiment.
Embodiment
The gas-generating agent composition that contains simple substance of the present invention, select for use a kind of metal simple-substance material or non-metal simple-substance material to mix in the said composition that makes with guanidine derivatives, nitrate, remove commonly used at present as binding agent, the kaolin of ignition dope effect, acidic white earth, silicide, metal oxide.To reduce the level of residue after gas-generating agent composition burns and to reduce the aerogenesis temperature.
The gas-generating agent composition that is used for air bag passes through component (c) i.e. " metal simple-substance or non-metal simple-substance ", the adding of this component (c) has improved the efficiency of combustion of gas-generating agent composition, improved the rate of combustion of gas-generating agent composition, according to oxygen balance and each raw-material character, reduced the consumption of component (a) guanidine derivatives, (b) nitrate by optimum combination.
Component among the present invention (c) be for non-metal simple-substance or metal simple-substance can be selected from following a kind of simple substance, silicon, aluminium, magnesium, copper, boron etc.
Component (c) is used as slag former, scorification agent, and its adding can replace conventional silicon compound, kaolin, acidic white earth, the metal oxide of containing.The level of residue of this gas-generating agent composition still less, performance is safer.With routine contain silicon compound, kaolin, acidic white earth, the amount that the metal oxide gas-generating agent composition is compared used Guanidinium nitrate, nitroguanidine still less and makes this gas-generating agent composition can be in the perfect combustion under low temperature, the low-temp low-pressure condition.
Silicon can put forward to be preferred for the present invention as special oxygenant, and silicon residues of combustion composition is a silicon-dioxide, and its fusing point is more than 2000 ℃ even also almost be solid-state under the producer gas generator operational stage.
Consider the granularity requirements specific surface area of the selected simple substance of performance requriements of mixing uniformity in process of production and gas-generating agent composition.The combustionproperty of the big more gas-generating agent composition of specific surface area is good more, considers that the big more material of cost factor specific surface area causes cost too high.Therefore require the specific surface area of silicon at 17500cm
2/ g～23500cm
2/ g, the consumption of silicon preferred especially 5%～15%.
Guanidine derivatives of the present invention be component (a) in composition as the aerogenesis component, these compounds are that organic compounds gas production rate is big, can stable burning, do not have residue simultaneously.
Component (a) is that guanidine derivatives can be selected from one or more following compounds, Guanidinium nitrate, nitroguanidine, nitric acid triaminoguanidine, dicyanodiamide, Guanidinium carbonate, amino-guanidine nitrate, diamino Guanidinium nitrate, triamino Guanidinium nitrate or nitric acid ammonium nitrate guanidine ex hoc genus anne material.Preferred Guanidinium nitrate, nitroguanidine in these compounds.Wherein Guanidinium nitrate has high melt point, Heat stability is good, and Guanidinium nitrate has high negative standard enthalpy of formation Δ Hf in addition, and choosing of Guanidinium nitrate makes gas-evolution agent thermal discharge in burning little, and control gas-generating agent composition temperature of combustion is to minimum.Wherein nitroguanidine is emitted a large amount of heat as a kind of high energy compound in combustion processes, can select Guanidinium nitrate, two kinds of combinations of nitroguanidine for use, can performance complement between these two kinds of starting material.The kind of component in the composition (a) and content are according to the content of the kind of the kind of the kind of (c) component and content, (b) nitrate and content, tackiness agent and tackiness agent, oxygen balance etc. and different, under the prerequisite of gas production rate, minimum aerogenesis temperature, the preferred Guanidinium nitrate 8%～13% of the kind of component (a), nitroguanidine 15%～25%.
Component among the present invention (b) nitrate uses as oxygenant.Component (b) nitrate can be selected from one or more following compounds.Saltpetre, ammonium nitrate, strontium nitrate, SODIUMNITRATE, and similar compound.
In being used for the gas generating agent field of air bag for the oxygenant known to everybody all can adopt as oxygenant in the present invention, for example saltpetre, strontium nitrate, ammonium nitrate, SODIUMNITRATE, they generate dystectic residue after burning be preferred.Strontium nitrate, saltpetre provide a large amount of oxygen in combustion processes, strontium oxide, potassium oxide fusing point that burning generates are all very high, under the state of producer gas generator effect, just exist with solid-state.
Strontium nitrate, English name: Strontium nitrate, molecular formula: Sr (NO3) 2, molecular weight: 211.63, be a kind of colourless crystallization or white powder.The easy moisture absorption.Soluble in water; Be slightly soluble in pure and mild ketone; Be insoluble to dehydrated alcohol.Meet the contact of high temperature or organism, friction or bump, can cause burning or blast.570 ℃ of fusing points.Can be used for production industries such as red fireworks, pigment, signal flare, burner inner liner, analytical reagent, opticglass, electronic cathode material, pharmaceutical industry, car safety air bag, fire-extinguishing chemical.The also preferred especially strontium nitrate of oxygenant in the present invention.
Saltpetre is water white transparency rhomboidal crystal or powder, particle, relative density 2.1109, molecular formula: KNO3 molecular weight: 101.11, and 333 ℃ of fusing points, heat is emitted oxygen to 400 ℃ of decomposition, is transformed into potassium nitrite, continues thermal degradation and generates potassium oxide and nitrogen oxide.Water-soluble (0 ℃ the time, 13.3g/100gH2O; In the time of 30 ℃, 45.8g/100H2O; In the time of 100 ℃, 246.0g/100gH2O), be insoluble to ethanol.Can be dissolved in liquefied ammonia and glycerine.It is the raw material of making gun powder, firing line, flame flower etc.; The also preferred especially saltpetre of oxygenant in the present invention.
SODIUMNITRATE is mainly used in makes saltpetre, explosive, picric acid and other nitrate, the fusing assistant, tobacco ignition dope, the metal that also can be used as the defoamer of glass and discoloring agent, porcelain enamel industry clean and preparation ferrous metal blueing agent, aluminum alloy heat processing etc., also can be used as oxygenant in the present invention uses, the chemical property difference that all generates gas and saltpetre after burning is little.
Ammonium nitrate all generates gases as oxygenant after burning, do not have residue, so ammonium nitrate also is a good gas generating agent, in the present invention the also preferred especially ammonium nitrate of oxygenant.Yet there is the problem that changes mutually at normal temperatures in ammonium nitrate.
Patent No. CN117494C has introduced and has selected for use ammonium nitrate as the problem that changes body and increase mutually and the solution that exist in the process oxidant.The phase transition temperature of ammonium nitrate is in the room temperature range (32 ℃), and when temperature surpassed its phase transition temperature, the volume change of ammonium nitrate was very big.The volume change of moulded product causes the instability of said composition greatly.This patent provides solution: the mixture of ammonium nitrate with 90% and 10% potassium perchlorate is dissolved in the distilled water of q.s (60 ℃) and stirs.Then, solution is injected about 90 ℃ of heated drying casees, transpiring moisture.After most of water evaporation, resulting homomorphism composition is dispersed into thin layer in stainless steel vessel, 90 ℃ of following thorough dryings.Collect dry good material and grind, screen the particle that ground, obtain phase stable ammonium nitrate with the sieve of 300 μ m with mortar.
The phase stable ammonium nitrate complex technical process that aforesaid method obtains, it is higher to obtain the phase stable ammonium nitrate cost.The applicant provides a kind of method, can solve ammonium nitrate as the problem that changes body and increase mutually that exists in the process oxidant.Soon ammonium nitrate, saltpetre, Guanidinium nitrate are dissolved in an amount of water, and the method for shearing by high-speed shearing machine makes saltpetre, ammonium nitrate, Guanidinium nitrate form suspension liquid.This suspension liquid carries out sreen analysis through laser particle analyzer, and its size range should be between 5 μ m～15 μ m.This method can solve that ammonium nitrate takes place about 32 ℃ changes the problem that volume is increased mutually, simultaneously saltpetre, ammonium nitrate, Guanidinium nitrate can better be mixed with other components.This technological process improved gas-generating agent composition performance, simplified production technique, reduced production cost.
The amount of all oxygenants is not strict especially restriction among the present invention, as long as oxidant content is enough to perfect combustion organic compounds containing nitrogen and control combustionvelocity and calorific value.But strontium nitrate, ammonium nitrate, saltpetre during as oxygenant content preferably in 41%～58% of total amount.
Also contain tackiness agent in the gas-generating agent composition of the present invention, can add the compound that one or more are selected from high energy and non-high energy tackiness agent, this depends on the intensity of gas-evolution agent or the requirement that mouldability raises.
Tackiness agent comprises Xylo-Mucine (CMC), cellulose acetate (CA), cellulose acetate butyrate (CAB), methylcellulose gum, Natvosol and analogue thereof.
Xylo-Mucine (CMC) is a kind of important ether of cellulose, is the polyanionic compound that natural fiber passes through a kind of good water solubility that is obtained after the chemical modification, is soluble in cold and hot water.It has emulsifying dispersant, solid dispersed, it is corrupt to be difficult for, unusual and extremely valuable comprehensive physics, chemical property such as harmless on the physiology, is a kind of broad-spectrum natural polymer derivative.The high-performance of CMC as: thickening property, water-retentivity, metabolism inertia, film forming plasticity, dispersion stabilization etc. can be used as thickening material, water-holding agent, tackiness agent, lubricant, emulsifying agent, suspension aid, tablet matrix, bio-matrix and biological products carrier etc.CMC is a kind of natural hydrophilic substance, and the CMC particles dispersed is in water, and swelling is dissolved then at once.
1, under stirring state, add CMC slowly, but accelerate dissolution;
2, under heating state, disperse to add CMC, can improve dissolution rate, but Heating temperature is unsuitable too high, 50 ℃～60 ℃ of optimum ranges;
3, when using with other mixing of materials, carry out solid earlier and mix, and then dissolving, dissolution rate also can improve.
Cellulose acetate (CA) is the material arranged side by side with the ethers Mierocrystalline cellulose.Cellulose acetate butyrate (CAB) has good shock-resistance, methylcellulose gum has good bounding force, dispersion force, wettability, thickening property, water-retentivity and film-forming properties, Natvosol is a non-ionic compound, at acidity-basicity ph value 2～12, and fabulous consistency is all arranged with all emulsion and auxiliary agent.And do not have phenomenons such as hanging stream and graining.Fabulous levelling property is arranged.Because Natvosol can not reduce the surface tension of emulsion paint, can because forming, foamy not make film forming produce defectives such as aperture and pin hole.And rise higher when falling greatly in temperature, also can keep stable viscosity.
Suitable consumption based on the tackiness agent of composition depends on the desired mouldability of composition, and adhesive consumption is preferably 2%～15% of total amount, especially is preferably 4%～10% of total composition.
Gas-generating agent composition of the present invention requires each raw-material granularity refinement, and the granularity of guanidine derivatives is between 5 μ m～15 μ m, and the desired granularity of nitrate is 5 μ m～35 μ m.Selected simple substance requires specific surface area, and for example the specific surface area of boron, silicon requires to be 17500cm
2/ g～23500cm
2/ g is converted into granularity, and its diameter is between 1.0 μ m～4 μ m.
Embodiment:
According to applicant's research experiment, the specific embodiment of the table 1 that the present invention provides.Need to prove; these embodiment are the more excellent example of the present invention, and the present invention is not limited to these embodiment, and those skilled in the art is according to technical scheme disclosed by the invention; the equivalence that technical characterictic is wherein done is replaced, added, all be included in protection scope of the present invention.
Table 1:
| Title | Composition (wt%) |
| Embodiment 1 | Guanidinium nitrate/nitroguanidine/ammonium nitrate/strontium nitrate/saltpetre/Xylo-Mucine/aluminium powder=15/18/9/32/6/6/14 |
| Embodiment 2 | Guanidinium nitrate/nitroguanidine/ammonium nitrate/strontium nitrate/saltpetre/Xylo-Mucine/boron powder=15/19/20/22/8/6/10 |
| Embodiment 3 | Guanidinium nitrate/nitroguanidine/ammonium nitrate/strontium nitrate/saltpetre/Xylo-Mucine/silica flour=12/20/22/20/6/4/16 |
| Embodiment 4 | Guanidinium nitrate/nitroguanidine/ammonium nitrate/strontium nitrate/saltpetre/Xylo-Mucine/silica flour=12/20/22/20/8/8/10 |
| Embodiment 5 | Guanidinium nitrate/nitroguanidine/ammonium nitrate/strontium nitrate/saltpetre/Xylo-Mucine/silica flour=10/15/12/25/8/15/15 |
| Embodiment 6 | Guanidinium nitrate/nitroguanidine/ammonium nitrate/strontium nitrate/saltpetre/Xylo-Mucine/silica flour=8/25/22/20/8/8/10 |
| Embodiment 7 | Guanidinium nitrate/nitroguanidine/ammonium nitrate/strontium nitrate/saltpetre/Xylo-Mucine/silica flour=12/20/22/20/8/8/10 |
Certainly, because the similarity of chemical substance, guanidine derivatives also can be selected nitric acid triaminoguanidine, dicyanodiamide, Guanidinium carbonate, amino-guanidine nitrate, diamino Guanidinium nitrate, triamino Guanidinium nitrate or nitric acid ammonium nitrate guanidine ex hoc genus anne material, also can prepare gas-generating agent composition of the present invention.
The preparation method of embodiment:
Guanidinium nitrate in the table 1, ammonium nitrate, saltpetre are dissolved in an amount of water, and the method for shearing by high-speed shearing machine makes saltpetre, ammonium nitrate, Guanidinium nitrate form suspension liquid.This suspension liquid (to call suspension liquid in the following text) carries out sreen analysis through laser particle size analyzer, and its size range should be between 5 μ m～15 μ m.The gas-generating agent composition that this method obtains can solve the problem of the phase stability of ammonium nitrate, can further confirm with crossing TG-DTA (thermogravimetric analysis-measure simultaneously differential thermal analysis).
With the suspension liquid that obtains (wherein the content of saltpetre, ammonium nitrate, Guanidinium nitrate can be different) with nitroguanidine, strontium nitrate, Xylo-Mucine, carry out wet mixing.
Suspension liquid and other components are mixed mutually obtaining uniform gas-generating agent composition, adopt the plunger tpe extruding when moisture 15% left and right sides, the pressure of extruding is 8Mpa, and oven dry, pelletizing, drying obtain the long 5mm that is, diameter is the particle of 3mm.This particle is measured combustion time P-T curve test result and is seen Fig. 1 in the case combustion test.
EXPERIMENTAL EXAMPLE:
Referring to table 2, this gas-generating agent composition that embodiment 1～4 obtains is measured P-T curve combustion time in the case combustion test, and each aerogenesis temperature is at 720 ℃～910 ℃, and level of residue is below 15%.Compare with used gas-generating agent composition with similar producer gas generator, consumption can reduce to 20g～27g.Test result is seen Fig. 1.
Table 2
Claims (6)
1. a gas-generating agent composition that contains simple substance is characterized in that the said composition that makes is 720 ℃～910 ℃ for the aerogenesis temperature, and level of residue is below 15%, and it is mixed by following component and weight percent thereof and forms:
(a) as the guanidine derivatives of aerogenesis component, its granularity is that content is 23%～38% between 5 μ m～15 μ m; Described guanidine derivatives is selected from one or more compounds of Guanidinium nitrate, nitroguanidine, nitric acid triaminoguanidine, dicyanodiamide, Guanidinium carbonate, amino-guanidine nitrate, diamino Guanidinium nitrate, triamino Guanidinium nitrate or nitric acid ammonium nitrate guanidine ex hoc genus anne material;
(b) nitrate that uses as oxygenant, its granularity is 5 μ m～35 μ m, content is 41%～58%; Described nitrate is selected from one or more compounds of saltpetre, ammonium nitrate, strontium nitrate, SODIUMNITRATE and similar compound;
(c) non-metal simple-substance or the metal simple-substance that uses as ignition dope, slag former, scorification agent, its specific surface area is 17500cm
2/ g～23500cm
2/ g is converted between particle size diameter 1.0 μ m～4 μ m, and content is 2%～25%; Described non-metal simple-substance or metal simple-substance are selected from wherein a kind of of silicon, aluminium, magnesium, copper, boron;
(d) tackiness agent, its content are 2%～15%; Described tackiness agent is selected from wherein a kind of of Xylo-Mucine, cellulose acetate, cellulose acetate butyrate, methylcellulose gum, Natvosol.
2. the gas-generating agent composition that contains simple substance as claimed in claim 1 is characterized in that, described guanidine derivatives is selected from Guanidinium nitrate, two kinds of combinations of nitroguanidine, and wherein Guanidinium nitrate content is 8%～15%, and nitroguanidine content is 15%～23%.
3. the gas-generating agent composition that contains simple substance as claimed in claim 1 is characterized in that, when described non-metal simple-substance was selected silicon, its content was 5%～15%.
4. the gas-generating agent composition that contains simple substance as claimed in claim 1 is characterized in that, when described tackiness agent was selected Xylo-Mucine, its content was 4%～10%.
5. the gas-generating agent composition that contains simple substance as claimed in claim 1, it is characterized in that, when the described nitrate that uses as oxygenant is selected saltpetre, ammonium nitrate, strontium nitrate combination, the weight percent that accounts for the gas-generating agent composition total amount respectively is: ammonium nitrate: 9%～22%%, strontium nitrate: 20%～32%, saltpetre: 6%～8%%.
6. the described preparation method who contains the gas-generating agent composition of simple substance of claim 1 is characterized in that, comprises the following steps:
Select guanidine derivatives to select Guanidinium nitrate 8%～15%, nitroguanidine 15%～23%, its granularity is between 5 μ m～15 μ m, and nitrate is selected saltpetre, strontium nitrate, SODIUMNITRATE for use, requires granularity at 5 μ m～35 μ m; It is 17500cm that selected simple substance requires specific surface area
2/ g～23500cm
2/ g is converted between particle size diameter 1.0 μ m～4 μ m; Tackiness agent is selected Xylo-Mucine, and content is 4%～10%;
Get ammonium nitrate, saltpetre, Guanidinium nitrate and be dissolved in an amount of water, the method for shearing by high-speed shearing machine makes saltpetre, ammonium nitrate, Guanidinium nitrate form suspension liquid, and this suspension liquid size range is between 5 μ m～15 μ m;
With the above-mentioned suspension liquid that obtains and nitroguanidine, strontium nitrate, Xylo-Mucine, carry out wet mixing and obtain uniform gas-generating agent composition, when moisture 15% left and right sides, adopt the plunger tpe extruding, the pressure of extruding is 8Mpa, oven dry, pelletizing, drying obtain the long 5mm that is, diameter is the particle of 3mm, promptly obtain the aerogenesis temperature at 720 ℃～910 ℃, level of residue is the gas-generating agent composition below 15%.
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| CN101766878B (en) * | 2009-12-29 | 2012-01-11 | 广西国杰斯消防科技有限公司 | Aerosol fire extinguishing agent and wet preparation method thereof |
| CN102666439A (en) * | 2009-11-27 | 2012-09-12 | 国立大学法人东京大学 | Gas-generating agent composition |
| CN103625413A (en) * | 2012-08-28 | 2014-03-12 | 比亚迪股份有限公司 | Gas generating agent and preparing method thereof |
| CN105503660A (en) * | 2015-12-04 | 2016-04-20 | 湖北航天化学技术研究所 | Purification method of triaminoguanidinium nitrate |
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| US10968147B2 (en) * | 2005-06-02 | 2021-04-06 | Ruag Ammotec Gmbh | Pyrotechnic agent |
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