CN107698415A - A kind of gas generant composition, preparation method, application and gas generator - Google Patents
A kind of gas generant composition, preparation method, application and gas generator Download PDFInfo
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- CN107698415A CN107698415A CN201711003997.6A CN201711003997A CN107698415A CN 107698415 A CN107698415 A CN 107698415A CN 201711003997 A CN201711003997 A CN 201711003997A CN 107698415 A CN107698415 A CN 107698415A
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- generant composition
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
- C06B31/02—Compositions containing an inorganic nitrogen-oxygen salt the salt being an alkali metal or an alkaline earth metal nitrate
- C06B31/12—Compositions containing an inorganic nitrogen-oxygen salt the salt being an alkali metal or an alkaline earth metal nitrate with a nitrated organic compound
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
- B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0008—Compounding the ingredient
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0033—Shaping the mixture
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
- C06B23/009—Wetting agents, hydrophobing agents, dehydrating agents, antistatic additives, viscosity improvers, antiagglomerating agents, grinding agents and other additives for working up
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
The present invention relates to a kind of gas generant composition, preparation method and gas generator comprising said composition, the gas generant composition includes the component of following mass percentage content：Guanidine nitrate 40%~60%；Basic copper nitrate 25%~40%；Strontium nitrate 1%~20%；Ammonium perchlorate 1%~10%；Strontium titanates 5.5%~10%；Talcum powder 0.6%~10%, the gas generant composition is by using strontium titanates and talcum powder collectively as form retention agent, the two acts synergistically, tablet is set to can be good at keeping the form before burning after burning, tablet melts the burn airbag that splashes after avoiding burning, and the usage amount of basic copper nitrate is reduced, reduces molten copper residue as cooxidant by using strontium nitrate；In addition significantly improve the low-temperature ignition performance of composition as ignition performance conditioning agent by using ammonium perchlorate while improve burning velocity, the gas generant composition is mainly used in automobile safety air bag gas generator.
Description
Technical field
The present invention relates to a kind of gas generant composition, preparation method, using and comprising said composition gas generation
Device, more particularly to a kind of gas generant composition for being easy to slagging and igniting, preparation method, using and comprising said composition
Gas generator, belong to automobile safety air bag gas generator technical field.
Background technology
Automobile airbag gas propellant be fitted into as a kind of gas producing medicinal in gas generator, it is necessary to when draw
Hair, produces substantial amounts of gas.Air bag is made up of gas generator and airbag.When general collision exceeds preset strength, gas
Generator is activated triggering, starts the internal gas-forming agent generation gas of burning, to air bag inflator, between interior trim and human body
A buffering pneumatic cushion is formed, protection human body escapes injury.
Gas-forming agent is mainly the gas generant formulation of sodium azide type early stage, this formula with flameholding,
Combustion temperature is low, easy igniting, it is interior force down, the lot of advantages such as factor of created gase is high, residue is few.But due to environmentally friendly, safe for health
The problem of aspect, in terms of being seldom used in safe automobile air bag now.
The gas-forming agent of main flow is guanidine nitrate and basic copper nitrate class gas-forming agent in world wide at present, guanidine nitrate
As main fuel, basic copper nitrate is as primary oxidizers.Universal higher, the alkali formula after burning of the combustion temperature of this kind of gas-forming agent
Copper nitrate mainly generates the copper metal of melting, this cause usually require multiple layer metal screen pack it is filtered and cooled, will
It is stayed in inside generator.One side metal filter screen weight increase can cause cost increase and the increase of generator weight；In addition
On the one hand, even if can not filter all residues using multiple filtration net, small part residue can scald airbag by screen pack,
More serious meeting scald human body.
So settling mode is generally：1. the usage amount of basic copper nitrate is reduced, so as to reduce gas generant composition
The molten copper residue formed after burning；2. form retention agent is added in composite formula.Form retention agent is generally high-melting-point
Material, play a part of increase melting residue viscosity and maintain own form as tablet skeleton.
Strontium titanates is a kind of dystectic metallic compound.Also there is use in airbag gas-generating agent field before,
Such as patent CN105801326A is exactly the gas generant formulation for mainly containing guanidine nitrate, basic copper nitrate, titanate.But
Titanate is only used only as unique form retention agent in the patent, to form holding effect and unobvious, it is impossible to play very well
The holding of burning form effect, especially for basic copper nitrate content be more than 40%, guanidine nitrate content be more than 40% gas
Propellant can not play burning form holding effect, and the gas generant formulation is not easy to be ignited well.
Such as patent CN100376515C discloses a kind of gas-generating agent composition, including guanidine nitrate, basic copper nitrate, auxiliary oxygen
Agent sodium nitrate, cupric oxide and iron oxide, and igniting modifying agent (alundum (Al2O3), copper chloride, copper chromate, potassium chromate), are adopted
The gas-generating agent composition made with igniting modifying agent is easier to light a fire, and ignition-delay period is short, but alundum (Al2O3) is generally used for residue
Conglomeration, it is little for igniting improving effect；Copper chloride is that weak oxidant igniting improving effect is little；Copper chromate, potassium chromate are all
The strong oxidizer of cupric class, certain igniting improving effect can be played, but can increase residue content, copper chromate increase is insoluble
Residue content, potassium chromate increase solvable residue content, and the gas that solubility can be formed after the substance combustion of alkali metal containing potassium class is molten
Glue particulate, it is unfavorable to residue conglomeration.
Such as patent US5827996A discloses a kind of gas generant for air cell, including fuel using azole or its gold again
Belong to salt, oxidant, combustion catalyst, control incendiary agent and slag former, fuel uses azole and metal salt, and slag former is solidification gas
The additive of the combustion residue of body propellant, residue is removed so as to be advantageous to the filter in air bag, but the patent is fitted
For formula of the azole as fuel, much higher than guanidine nitrate basic copper nitrate type formulation of such formula combustion temperature, even if adding
Slag former tablet form can not be kept very well.
In addition patent CN101952227B discloses a kind of method for preparing gas-forming agent, with the addition of guanidine nitrate, alkali formula
Copper nitrate, cooxidant (such as potassium nitrate, strontium nitrate and sodium nitrate), burning ratemodifier (potassium hyperchlorate), slag accelerator
(silica, zinc oxide, amine-oxides, aluminum oxide), tabletting demolding aids and form keep collaboration auxiliary agent B (graphite, curing
Molybdenum, tungsten disulfide, boron nitride), granulation mode used in the patent is spraying granulation mode, spraying granulation energy compared with wet granulation
Consumption is higher；In addition, slag accelerator used in the patent mainly come metal oxide, as silica, aluminum oxide, zinc oxide,
Cerium oxide, metal oxide can play certain promotion slag conglomeration effect as slag accelerator, but for tablet shape
State holding effect and unobvious；The patent has used tabletting demolding aids such as simultaneously：Graphite, molybdenum disulfide, tungsten disulfide, nitridation
Boron, these auxiliary agents function only as the effect of compression aids, it is impossible to coordinate with metal oxide and promote slag conglomeration.
The content of the invention
It is an object of the invention to overcome the above-mentioned deficiency of prior art, there is provided a kind of gas generant composition, the gas
Body propellant composition, collectively as form retention agent, the two synergy, fires tablet by using strontium titanates and talcum powder
It can be good at keeping the form before burning after burning, avoid tablet melting splashing burn airbag after burning, and by using nitre
Sour strontium reduces the usage amount of basic copper nitrate, reduces molten copper residue as cooxidant；By using ammonium perchlorate conduct
Ignition performance conditioning agent, significantly improve the low-temperature ignition performance of composition while improve burning velocity.
Another object of the present invention is the preparation method for providing gas generant composition.
A further object of the present invention is the application for providing gas generant composition.
It is yet a further object of the present invention to provide the gas generator for including above-mentioned gas propellant composition.
What the above-mentioned purpose of the present invention was mainly achieved by following technical solution：
A kind of gas generant composition, include the component of following mass percentage content：
In above-mentioned gas propellant composition, the mass percentage content of the strontium nitrate is 2%-10%.
In above-mentioned gas propellant composition, the mass percentage content of the ammonium perchlorate is 1%-3%.
In above-mentioned gas propellant composition, the mass percentage content of the talcum powder is 0.6%-2%.
A kind of gas generant composition, include the component of following mass percentage content：
In above-mentioned gas propellant composition, each component water content sum of the gas generant composition is not more than
The 1% of each component gross mass.
In above-mentioned gas propellant composition, the particle diameter D90 of the basic copper nitrate is not more than 5 μm.
In above-mentioned gas propellant composition, the particle diameter D90 of the talcum powder is not more than 10 μm.
In above-mentioned gas propellant composition, after gas generant composition shaping for circular sheet-like structures or
A diameter of 3~15mm of annular laminated structure, wherein circular sheet-like structures；The internal diameter of annular laminated structure is 1~3mm,
External diameter is 4~15mm.
The preparation method of gas generant composition, prepares gas generant composition by the way of wet granulation.
The specific preparation process that gas generant composition is prepared by the way of wet granulation is as follows：
(1) first material is obtained after, mixing guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate and strontium titanates；
(2), add water to carry out wet-mixing first material, obtain second material, wherein amount of water is the total matter of first material
The 8%~15% of amount；
(3) second material, is obtained into 3 material by the screen cloth of 10~40 mesh；
(4), 3 material is dried, is dried to water content is less than 3 material gross mass 0.5%, again by
The screen cloth of 10~40 mesh obtains 4 materials；
(5) talcum powder, will be added in 4 materials, carries out material forming.
In the preparation method of above-mentioned gas propellant composition, in the step (1) by guanidine nitrate, basic copper nitrate,
Strontium nitrate, ammonium perchlorate and strontium titanates carry out being mixed to get first material, incorporation time >=5min in mixing apparatus.
In the preparation method of above-mentioned gas propellant composition, the time of wet-mixing is 20min in the step (2)
~60min；The equipment of wet-mixing is kneader or mixer.
In the preparation method of above-mentioned gas propellant composition, step (5) material forming obtains round sheet knot
A diameter of 3~15mm of structure or annular laminated structure, wherein circular sheet-like structures；The internal diameter of annular laminated structure is 1
~3mm, external diameter are 4~15mm.
The specific preparation process that gas generant composition is prepared by the way of wet granulation is as follows：
(1) first is obtained after, mixing guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate, strontium titanates and talcum powder
Material；
(2), add water to carry out wet-mixing first material, obtain second material, wherein amount of water is the total matter of first material
The 8%~15% of amount；
(3) second material, is obtained into 3 material by the screen cloth of 10~40 mesh；
(4), 3 material is dried, is dried to water content is less than 3 material gross mass 0.5%, again by
The screen cloth of 10~40 mesh obtains 4 materials；
(5) 4 materials, are subjected to material forming.
In the preparation method of above-mentioned gas propellant composition, in the step (1) by guanidine nitrate, basic copper nitrate,
Strontium nitrate, ammonium perchlorate, strontium titanates and talcum powder carry out being mixed to get first material in mixing apparatus, and incorporation time >=
5min。
In the preparation method of above-mentioned gas propellant composition, the time of wet-mixing is 20min in the step (2)
~60min；The equipment of wet-mixing is kneader or mixer.
In the preparation method of above-mentioned gas propellant composition, step (5) material forming obtains round sheet knot
A diameter of 3~15mm of structure or annular laminated structure, wherein circular sheet-like structures；The internal diameter of annular laminated structure is 1
~3mm, external diameter are 4~15mm.
The application of above-mentioned gas propellant composition, the gas generant composition are used for automobile airbag gas
Device.
A kind of gas generator, using above-mentioned gas propellant composition.
The present invention has the advantages that compared with prior art：
(1), the present invention can not be played very for gas generant composition in the prior art using single form retention agent
The defects of good burning form holding effect, by research and lot of experiments, propose using strontium titanates and talcum powder collectively as
Form retention agent, while the dosage of the two is given, pass through the two synergy so that can after the burning of gas-forming agent tablet
The form before burning is kept well, and tablet melts the burn airbag that splashes after avoiding burning.
(2), on the one hand the present invention can reduce alkali formula in composition using a certain amount of strontium nitrate as cooxidant
The usage amount (such as can reduce the usage amount of basic copper nitrate to less than 40%) of copper nitrate, reduces basic copper nitrate burning point
The molten copper residue formed after solution；Product strontium oxide strontia fusing point is 2430 DEG C after strontium nitrate burning simultaneously, is far longer than metallic copper
Fusing point, the metal copper melt formed after being decomposed to basic copper nitrate form good coagulation, further reduce melting
Copper residue.
(3), the present invention using strontium nitrate as cooxidant, high-melting-point product strontium oxide strontia that strontium nitrate is decomposed to form and
Strontium titanates and talcum powder promote tablet preferably to keep the form before burning after burning, avoid firing collectively as form retention agent
Tablet melting splashing burn airbag after burning.
(4), using a certain amount of ammonium perchlorate as ignition performance conditioning agent, coordinate with other each components makes the present invention
With, improve composition low-temperature ignition performance simultaneously improve burning velocity.
(5), the present invention is by including guanidine nitrate, basic copper nitrate, strontium nitrate, perchloric acid to gas generant composition
The content proportioning of each component including ammonium, strontium titanates and talcum powder optimizes design, and is verified by lot of experiments, makes
Obtaining gas generant composition has excellent performance and significant effect, can be good at protecting after the burning of gas-forming agent tablet
The form before burning is held, and substantially reduces the molten copper residue formed after basic copper nitrate combustion decomposition, is improving composition
Low-temperature ignition performance simultaneously improve burning velocity.
(6), the present composition before shaping, is pelletized using the mode of wet granulation, made by wet granulation
Technique is simpler, cost is relatively low, energy consumption is low, technique is more flexible, and equipment investment is low；
(7), the present invention optimizes design to the technical process and process conditions of wet granulation so that preparation technology letter
List, it is easily achieved, while talcum powder is carried out after being mixed together before preparation with remaining component in preparation method of the present invention
Prepared by wet method, can also be eventually adding talcum powder, preparation method is more flexible.
Brief description of the drawings
Fig. 1 is residue aspect graph after gas generant composition tablet burning in comparative example 1 of the present invention；
Fig. 2 is residue aspect graph after gas generant composition tablet burning in comparative example 2 of the present invention；
Fig. 3 is residue aspect graph after gas generant composition tablet burning in the embodiment of the present invention 1；
Fig. 4 is residue aspect graph after gas generant composition tablet burning in the embodiment of the present invention 2；
Fig. 5 is residue aspect graph after gas generant composition tablet burning in the embodiment of the present invention 3；
Fig. 6 is residue aspect graph after gas generant composition tablet burning in the embodiment of the present invention 4.
Fig. 7 is residue aspect graph after gas generant composition tablet burning in the embodiment of the present invention 5.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
The present invention is easy to the preparation method of the gas generant composition of slagging and igniting, specifically comprises the following steps：
(1) first material is obtained after, mixing guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate and strontium titanates.
Mixed in mixing apparatus, incorporation time >=5min；Mixing apparatus can be V-Mixer, 3 D multi-directional movement mixer,
Automatic lifting hopper mixer, vibromill, spiral ribbon mixer or acoustic resonance mixer.
(2), add water to carry out wet-mixing 20min-60min first material, obtain second material, wherein amount of water is the
The 8%~15% of one material gross mass, it is preferred to use add distilled water.The equipment of wet-mixing is kneader or mixer, example
Horizontal kneading machine, vertical kneading mixer, spiral ribbon mixer or acoustic resonance mixer can such as be selected.
(3) second material, is obtained into 3 material by the screen cloth of 10~40 mesh；
(4), 3 material is dried, is dried to water content is less than 3 material gross mass 0.5%, again by
The screen cloth of 10~40 mesh obtains 4 materials；Drying plant can be electrical heating baking oven, oil bath baking oven, steam drying box, bipyramid baking
Case, vibrated fluidized bed or band-type vacuum drier.
(5) talcum powder, will be added in 4 materials, carries out material forming, former can be hydraulic press, rotary tablet compression
Machine or powder former.Material forming obtains circular sheet-like structures or annular laminated structure, wherein circular sheet-like structures
A diameter of 3~15mm；The internal diameter of annular laminated structure is 1~3mm, and external diameter is 4~15mm.
The present invention by talcum powder and remaining component while can also mix before preparation starts, i.e., by guanidine nitrate, alkali formula
First material is obtained after copper nitrate, strontium nitrate, ammonium perchlorate, strontium titanates and talcum powder mixing, starts follow-up preparation afterwards
Journey, it is identical that rear continuous preparation ibid states method.
The gas generant composition that the present invention is prepared is mainly used in automobile safety air bag gas generator.
The present invention also provides a kind of gas generator, is made using the above-mentioned gas generant composition for being easy to slagging and igniting
For gas-forming agent.
For the mixing apparatus used in following examples for three-dimensional multinomial movement mixer, kneader is horizontal kneading machine, is dried
Dry equipment is vacuum drying oven, and former is rotary pelleting machine.
Comparative example 1
Gas generant composition includes the component of following mass percentage content：
Guanidine nitrate 50%
Basic copper nitrate 44.5%
Strontium titanates 5.5%
After these components are weighed, diameter 5mm, thickness 1.9mm circle are pressed into by wet granulation and rotary pelleting machine
Piece, specific preparation method are：First material is obtained after guanidine nitrate, basic copper nitrate and strontium titanates are mixed by mixing apparatus；
The distilled water that first material is added to 8% carries out wet method kneading 20min, obtains second material, second material is passed through into 10 purposes
Screen cloth obtains 3 material；3 material is dried, is dried to 0.5% of water content less than 3 material gross mass, then
The secondary screen cloth by 10 mesh obtains 4 materials；4 materials are subjected to material forming by rotary pelleting machine.
The disk of preparation is fitted into experiment generator, carries out ignition experiment.Generator is dissected after experiment, observed
Form after tablet burning.
It is as shown in Figure 1 residue aspect graph after gas generant composition tablet burning in comparative example of the present invention；Such as table 1 below
For the solvable residue of effluent and insoluble residue weight and low temperature after gas generant composition tablet burning in comparative example 1 of the present invention
Ignition delay time counts, and understands that tablet form is not kept by Fig. 1 and table 1, and residue largely flies out generator, low-temperature ignition
Time delay is more than 7ms.
Table 1
Comparative example 2
Gas generant composition includes the component of following mass percentage content：
Guanidine nitrate 40%
Basic copper nitrate 52.75%
Strontium titanates 6.5%
Talcum powder 0.75%
After these components are weighed, diameter 5mm, thickness 1.9mm circle are pressed into by wet granulation and rotary pelleting machine
Piece, specific preparation method are：First material is obtained after guanidine nitrate, basic copper nitrate and strontium titanates are mixed by mixing apparatus；
The distilled water that first material is added to 15% carries out wet method kneading 60min, obtains second material, second material is passed through into 40 purposes
Screen cloth obtains 3 material；3 material is dried, is dried to 0.5% of water content less than 3 material gross mass, then
The secondary screen cloth by 40 mesh obtains 4 materials；Talcum powder will be added in 4 materials, by rotary pelleting machine carry out material into
Type.
The disk of preparation is fitted into experiment generator, carries out ignition experiment.Generator is dissected after experiment, observed
Form after tablet burning.
Residue aspect graph after the burning of gas generant composition tablet is illustrated in figure 2 in comparative example 2 of the present invention；Such as following table
2 be the solvable residue of effluent and insoluble residue weight and low after the burning of gas generant composition tablet in comparative example 2 of the present invention
Warm ignition delay time statistics；Strontium titanates and talcum powder are added in this comparative example together as form retention agent, carries out substitute
After the experiment of capsule generator, tablet form obtains a certain degree of holding, as can be seen from Table 2, the residue content for the generator that flies out
Slightly higher, composition burn rate is slower, and the duration of ignition is more than 7ms.
Table 2
Embodiment 1
Gas generant composition includes the component of following mass percentage content：
Guanidine nitrate 50%
Basic copper nitrate 31.75%
Strontium nitrate 10%
Ammonium perchlorate 2%
Strontium titanates 5.5%
Talcum powder 0.75%.
After these components are weighed, diameter 5mm, thickness 1.9mm circle are pressed into by wet granulation and rotary pelleting machine
Piece, specific preparation method are：Guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate and strontium titanates are mixed by mixing apparatus
After obtain first material；The distilled water that first material is added to 8% carries out wet method kneading 20min, second material is obtained, by second
Material obtains 3 material by the screen cloth of 10 mesh；3 material is dried, it is total less than 3 material to be dried to water content
The 0.5% of quality, 4 materials are obtained again by the screen cloth of 10 mesh；Talcum powder will be added in 4 materials, pressed by rotating
Piece machine carries out material forming.
The disk of preparation is fitted into experiment generator, carries out ignition experiment.Generator is dissected after experiment, observed
Form after tablet burning.
Residue aspect graph after the burning of gas generant composition tablet is illustrated in figure 3 in the embodiment of the present invention 1；Such as following table
3 be the solvable residue of effluent and insoluble residue weight and low after the burning of gas generant composition tablet in the embodiment of the present invention 1
Warm ignition delay time statistics；Understand that tablet form is kept very well by Fig. 3 and table 3, the generator residue that flies out is less, low temperature
The duration of ignition meets the requirement less than 7ms.
Table 3
Strontium titanates is added in the present embodiment and talcum powder is mixed together, and collectively as form retention agent, both play very well
Synergy, while add strontium nitrate and ammonium perchlorate, basic copper nitrate content reduces to less than 35%, after strontium nitrate burning
High-melting-point product strontium oxide strontia and strontium titanates and talcum powder are together as form retention agent, after carrying out air bag generator experiment,
Tablet form is kept well, while composition burn speed improves, and molten copper residue is reduced.
Embodiment 2
Gas generant composition includes the component of following mass percentage content：
Guanidine nitrate 40%
Basic copper nitrate 40%
Strontium nitrate 12.75%
Ammonium perchlorate 1%
Strontium titanates 5.5%
Talcum powder 0.75%
After these components are weighed, diameter 5mm, thickness 1.9mm circle are pressed into by wet granulation and rotary pelleting machine
Piece, specific preparation method are：Guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate and strontium titanates are mixed by mixing apparatus
After obtain first material；First material is added to 15% distilled water to carry out wet method and mediate 60min, second material is obtained, by the
Two materials obtain 3 material by the screen cloth of 40 mesh；3 material is dried, water content is dried to and is less than 3 material
The 0.5% of gross mass, 4 materials are obtained again by the screen cloth of 40 mesh；Talcum powder will be added in 4 materials, pass through rotation
Tablet press machine carries out material forming.
The disk of preparation is fitted into experiment generator, carries out ignition experiment.Generator is dissected after experiment, observed
Form after tablet burning.
Residue aspect graph after the burning of gas generant composition tablet is illustrated in figure 4 in the embodiment of the present invention 2；Such as following table
4 be the solvable residue of effluent and insoluble residue weight and low after the burning of gas generant composition tablet in the embodiment of the present invention 2
Warm ignition delay time statistics；Understand that tablet form is kept very well by Fig. 4 and table 4, the generator residue that flies out is less, low temperature
The duration of ignition meets the requirement less than 7ms.
Table 4
Strontium titanates is added in the present embodiment and talcum powder is mixed together, and collectively as form retention agent, both play very well
Synergy, while add strontium nitrate and ammonium perchlorate, basic copper nitrate content reduces to less than 40%, after strontium nitrate burning
High-melting-point product strontium oxide strontia and strontium titanates and talcum powder are together as form retention agent, after carrying out air bag generator experiment,
Tablet form is kept well, while composition burn speed improves, and molten copper residue is reduced.
Embodiment 3
Gas generant composition includes the component of following mass percentage content：
Guanidine nitrate 60%
Basic copper nitrate 25%
Strontium nitrate 1%
Ammonium perchlorate 2%
Strontium titanates 10%
Talcum powder 2%.
After these components are weighed, diameter 5mm, thickness 1.9mm circle are pressed into by wet granulation and rotary pelleting machine
Piece, specific preparation method are：Guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate and strontium titanates are mixed by mixing apparatus
After obtain first material；First material is added to 10% distilled water to carry out wet method and mediate 40min, second material is obtained, by the
Two materials obtain 3 material by the screen cloth of 20 mesh；3 material is dried, water content is dried to and is less than 3 material
The 0.5% of gross mass, 4 materials are obtained again by the screen cloth of 20 mesh；Talcum powder will be added in 4 materials, pass through rotation
Tablet press machine carries out material forming.
The disk of preparation is fitted into experiment generator, carries out ignition experiment.Generator is dissected after experiment, observed
Form after tablet burning.
Residue aspect graph after the burning of gas generant composition tablet is illustrated in figure 5 in the embodiment of the present invention 3；Such as following table
5 be the solvable residue of effluent and insoluble residue weight and low after the burning of gas generant composition tablet in the embodiment of the present invention 3
Warm ignition delay time statistics；Understand that tablet form is kept very well by Fig. 5 and table 5, the generator residue that flies out is less, low temperature
The duration of ignition meets the requirement less than 7ms.
Table 5
Strontium titanates is added in the present embodiment and talcum powder is mixed together, and collectively as form retention agent, both play very well
Synergy, while add strontium nitrate and ammonium perchlorate, basic copper nitrate content reduces to less than 30%, after strontium nitrate burning
High-melting-point product strontium oxide strontia and strontium titanates and talcum powder are together as form retention agent, after carrying out air bag generator experiment,
Tablet form is kept well, while composition burn speed improves, and molten copper residue is reduced.
Embodiment 4
Gas generant composition includes the component of following mass percentage content：
Guanidine nitrate 45%
Basic copper nitrate 32%
Strontium nitrate 8%
Ammonium perchlorate 2%
Strontium titanates 3%
Talcum powder 10%.
After these components are weighed, diameter 5mm, thickness 1.9mm circle are pressed into by wet granulation and rotary pelleting machine
Piece, specific preparation method are：Guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate and strontium titanates are mixed by mixing apparatus
After obtain first material；First material is added to 12% distilled water to carry out wet method and mediate 30min, second material is obtained, by the
Two materials obtain 3 material by the screen cloth of 30 mesh；3 material is dried, water content is dried to and is less than 3 material
The 0.5% of gross mass, 4 materials are obtained again by the screen cloth of 30 mesh；Talcum powder will be added in 4 materials, pass through rotation
Tablet press machine carries out material forming.
The disk of preparation is fitted into experiment generator, carries out ignition experiment.Generator is dissected after experiment, observed
Form after tablet burning.
Residue aspect graph after the burning of gas generant composition tablet is illustrated in figure 6 in the embodiment of the present invention 4；Such as following table
6 be the solvable residue of effluent and insoluble residue weight and low after the burning of gas generant composition tablet in the embodiment of the present invention 4
Warm ignition delay time statistics, understand that tablet form is kept very well by Fig. 6 and table 6, the generator residue that flies out is less, low temperature
The duration of ignition meets the requirement less than 7ms.
Table 6
Strontium titanates is added in the present embodiment and talcum powder is mixed together, and collectively as form retention agent, both play very well
Synergy, while add strontium nitrate and ammonium perchlorate, basic copper nitrate content reduces to less than 35%, after strontium nitrate burning
High-melting-point product strontium oxide strontia and strontium titanates and talcum powder are together as form retention agent, after carrying out air bag generator experiment,
Tablet form is kept well, while composition burn speed improves, and molten copper residue is reduced.
Embodiment 5
Guanidine nitrate 51%
Basic copper nitrate 36%
Strontium nitrate 3%；
Ammonium perchlorate 2%；
Strontium titanates 7%
Talcum powder 1%.
After these components are weighed, diameter 5mm, thickness 1.9mm circle are pressed into by wet granulation and rotary pelleting machine
Piece, specific preparation method are：Guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate, strontium titanates and talcum powder are passed through into mixing
First material is obtained after equipment mixing；The distilled water that first material is added to 12% carries out wet method kneading 40min, obtains the second thing
Material, 3 material is obtained by second material by the screen cloth of 25 mesh；3 material is dried, water content is dried to and is less than the
The 0.5% of 3 material gross mass, 4 materials are obtained again by the screen cloth of 25 mesh；4 materials are directly passed through into rotary tablet compression
Machine carries out material forming.
The disk of preparation is fitted into experiment generator, carries out ignition experiment.Generator is dissected after experiment, observed
Form after tablet burning.
Residue aspect graph after the burning of gas generant composition tablet is illustrated in figure 7 in the embodiment of the present invention 5；Such as following table
7 be the solvable residue of effluent and insoluble residue weight and low after the burning of gas generant composition tablet in the embodiment of the present invention 5
Warm ignition delay time statistics.After carrying out air bag generator experiment as shown in Figure 7, tablet form is kept well.
Effluent residue gross weight is less than 1 gram in table 7, and the generator residue that flies out is less, and the low-temperature ignition time meets to want less than 7ms
Ask.
Table 7
Strontium titanates is added in the present embodiment and talcum powder is mixed together, and collectively as form retention agent, both play very well
Synergy, while add strontium nitrate and ammonium perchlorate, basic copper nitrate content reduces to 36%, Gao Rong after strontium nitrate burning
Point product strontium oxide strontia and strontium titanates and talcum powder are together as form retention agent, after carrying out air bag generator experiment, tablet
Form is kept well, while composition burn speed improves, and molten copper residue is reduced.
Three groups of parallel tests are made in the above-mentioned comparative example of the present invention and embodiment and have averaged.
It is described above, it is only the optimal embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (20)
- A kind of 1. gas generant composition, it is characterised in that：Include the component of following mass percentage content：
- 2. gas generant composition according to claim 1, it is characterised in that：The mass percent of the strontium nitrate contains Measure as 2%-10%.
- 3. gas generant composition according to claim 1, it is characterised in that：The mass percent of the ammonium perchlorate Content is 1%-3%.
- 4. gas generant composition according to claim 1, it is characterised in that：The mass percent of the talcum powder contains Measure as 0.6%-2%.
- A kind of 5. gas generant composition, it is characterised in that：Include the component of following mass percentage content：
- 6. the gas generant composition according to one of Claims 1 to 5, it is characterised in that：The gas-forming agent group The each component water content sum of compound is not more than the 1% of each component gross mass.
- 7. the gas generant composition according to one of Claims 1 to 5, it is characterised in that：The basic copper nitrate Particle diameter D90 is not more than 5 μm.
- 8. the gas generant composition according to one of Claims 1 to 5, it is characterised in that：The particle diameter of the talcum powder D90 is not more than 10 μm.
- 9. the gas generant composition according to one of Claims 1 to 5, it is characterised in that：The gas-forming agent group It is a diameter of 3~15mm of circular sheet-like structures or annular laminated structure, wherein circular sheet-like structures after compound shaping；Circle The internal diameter of annular slice structure is 1~3mm, and external diameter is 4~15mm.
- 10. the preparation method of the gas generant composition described in one of Claims 1 to 5, it is characterised in that：Using wet method system The mode of grain prepares gas generant composition.
- 11. the preparation method of gas generant composition according to claim 10, it is characterised in that：Specific preparation method Comprise the following steps：(1) first material is obtained after, mixing guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate and strontium titanates；(2), add water to carry out wet-mixing first material, obtain second material, wherein amount of water is first material gross mass 8%~15%；(3) second material, is obtained into 3 material by the screen cloth of 10~40 mesh；(4), 3 material is dried, is dried to water content is less than 3 material gross mass 0.5%, again by 10~ The screen cloth of 40 mesh obtains 4 materials；(5) talcum powder, will be added in 4 materials, carries out material forming.
- 12. the preparation method of gas generant composition according to claim 11, it is characterised in that：The step (1) It is middle to carry out in mixing apparatus guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate and strontium titanates to be mixed to get the first thing Material, incorporation time >=5min.
- 13. the preparation method of gas generant composition according to claim 11, it is characterised in that：The step (2) The time of middle wet-mixing is 20min~60min；The equipment of wet-mixing is kneader or mixer.
- 14. the preparation method of the gas generant composition according to one of claim 11~13, it is characterised in that：It is described Material forming obtains a diameter of the 3 of circular sheet-like structures or annular laminated structure, wherein circular sheet-like structures in step (5) ~15mm；The internal diameter of annular laminated structure is 1~3mm, and external diameter is 4~15mm.
- 15. the preparation method of gas generant composition according to claim 10, it is characterised in that：Specific preparation method Comprise the following steps：(1) first material is obtained after, mixing guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate, strontium titanates and talcum powder；(2), add water to carry out wet-mixing first material, obtain second material, wherein amount of water is first material gross mass 8%~15%；(3) second material, is obtained into 3 material by the screen cloth of 10~40 mesh；(4), 3 material is dried, is dried to water content is less than 3 material gross mass 0.5%, again by 10~ The screen cloth of 40 mesh obtains 4 materials；(5) 4 materials, are subjected to material forming.
- 16. the preparation method of gas generant composition according to claim 15, it is characterised in that：The step (1) It is middle to be mixed to get guanidine nitrate, basic copper nitrate, strontium nitrate, ammonium perchlorate, strontium titanates and talcum powder in mixing apparatus First material, incorporation time >=5min.
- 17. the preparation method of gas generant composition according to claim 15, it is characterised in that：The step (2) The time of middle wet-mixing is 20min~60min；The equipment of wet-mixing is kneader or mixer.
- 18. the preparation method of the gas generant composition according to one of claim 15~17, it is characterised in that：It is described Material forming obtains a diameter of the 3 of circular sheet-like structures or annular laminated structure, wherein circular sheet-like structures in step (5) ~15mm；The internal diameter of annular laminated structure is 1~3mm, and external diameter is 4~15mm.
- 19. the application of the gas generant composition described in one of Claims 1 to 5, it is characterised in that：The gas-forming agent Composition is used for automobile safety air bag gas generator.
- A kind of 20. gas generator, it is characterised in that：Using the gas generant composition described in one of Claims 1 to 5.
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| CN201711003997.6A CN107698415A (en) | 2017-10-24 | 2017-10-24 | A kind of gas generant composition, preparation method, application and gas generator |
| PCT/CN2018/074439 WO2019080395A1 (en) | 2017-10-24 | 2018-01-29 | Gas generating agent composition, preparation method, application, and gas generator |
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| WO2019080396A1 (en) * | 2017-10-24 | 2019-05-02 | 湖北航鹏化学动力科技有限责任公司 | Gas generating agent composition, preparation method, application, and gas generator |
| CN111548242A (en) * | 2020-05-15 | 2020-08-18 | 湖北航鹏化学动力科技有限责任公司 | Gas generator |
| CN111675589A (en) * | 2020-05-15 | 2020-09-18 | 湖北航鹏化学动力科技有限责任公司 | Gas generating agent composition, preparation method and application thereof |
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| WO2019080395A1 (en) | 2019-05-02 |
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Application publication date: 20180216 |