CN107698414B - Gas generant composition, preparation method, application and gas generator - Google Patents
Gas generant composition, preparation method, application and gas generator Download PDFInfo
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- CN107698414B CN107698414B CN201711003995.7A CN201711003995A CN107698414B CN 107698414 B CN107698414 B CN 107698414B CN 201711003995 A CN201711003995 A CN 201711003995A CN 107698414 B CN107698414 B CN 107698414B
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- 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
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- 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
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B31/00—Compositions containing an inorganic nitrogen-oxygen salt
-
- 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 gas generant composition, preparation method, application and gas generator, the composition includes the component of following mass percentage content: guanidine nitrate 35%~60%；Basic copper nitrate 25%~58%；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 synergistic effect can be good at keeping the form before burning after making tablet burning, avoid tablet melting splashing burn airbag after burning, and reduce molten copper residue, present composition preparation uses wet processing, and preparation process is simple, is easily achieved, which is mainly used for automobile safety air bag gas generator.
Description
Technical field
The present invention relates to gas generant composition, preparation method, using and comprising the gas generator of the composition, especially
It is related to the burn good gas generant composition of slagging properties, preparation method, the gas hair using and comprising the composition
Raw device, belongs to air-cushion inflator technical field.
Technical background
Gas generator of the safe automobile air bag by generation gas and two two parts of the airbag as support form.Gas hair
Contain gas-forming agent in raw device, cause when needs, gas-forming agent burning generates a large amount of gas.
The gas-forming agent of mainstream is guanidine nitrate and basic copper nitrate class gas-forming agent, guanidine nitrate in world wide at present
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 filter screen it is filtered and is cooled down, will
It is stayed in inside generator.One side metal filter screen weight increase will lead to increased costs and generator weight increases；In addition
On the one hand, even if can not filter all residues using multiple filtration net, small part residue can scald airbag by filter screen,
It is more serious to scald human body.
So must improve to guanidine nitrate and basic copper nitrate formula, it is exactly one of which side that form retention agent, which is added,
Formula.Its principle is, by the way that high-melting-point substances are added, play increase melting residue viscosity and maintain as tablet skeleton from figure
The effect of shape.
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, is not obvious, cannot be played very well to form holding effect
Burning form holding effect, especially for the high gas-forming agent of certain combustion temperature, especially guanidine nitrate content is greater than 35%
Gas-forming agent can not play the role of form holding of burning well.
Such as patent CN100376515C discloses a kind of gas-generating agent composition, including guanidine nitrate, basic copper nitrate, auxiliary oxygen
Agent sodium nitrate, copper oxide and iron oxide, and igniting modifying agent (aluminum oxide, copper chloride, copper chromate, potassium chromate), are adopted
It is easier to light a fire with the gas-generating agent composition that igniting modifying agent makes, ignition-delay period is short, but aluminum oxide 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 can play certain igniting improving effect, but will increase residue content, and copper chromate increases insoluble
Residue content, potassium chromate increase solvable residue content, and it is molten to will form soluble gas after the substance combustion of alkali metal containing potassium class
Glue particle, it is unfavorable to residue conglomeration.
Such as patent US5827996A discloses a kind of gas generant for air cell again, including fuel uses azole and metal
Salt, oxidant, combustion catalyst control incendiary agent and slag former, and fuel uses azole and metal salt, and slag former is solid gas
The additive of the combustion residue of propellant, so that the filter be conducive in air bag removes residue, but the patent is applicable in
In formula of the azole as fuel, much higher than guanidine nitrate basic copper nitrate type formulation of such formula combustion temperature make even if being added
Slag agent tablet form can not be kept very well.
Furthermore patent CN101952227B discloses a kind of method for preparing gas-forming agent, is added to guanidine nitrate, alkali formula
Copper nitrate, auxiliary oxidizing agent (such as potassium nitrate, strontium nitrate and sodium nitrate), burning ratemodifier (potassium hyperchlorate), slag promotor,
Tabletting demolding aids, granulation mode used in the patent are spraying granulation mode, and spraying granulation energy consumption compared with wet granulation is higher；
In addition, the metal oxide that slag promotor used in the patent mainly comes, such as silica, aluminium oxide, zinc oxide, cerium oxide,
Metal oxide can play the role of certain promotion slag conglomeration as slag promotor, but tablet form is kept making
With being not obvious；The patent also uses tabletting demolding aids such as simultaneously: graphite, molybdenum disulfide, tungsten disulfide, boron nitride, this
A little auxiliary agents function only as the effect of compression aids, cannot cooperate with metal oxide and promote slag conglomeration.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency of the prior art, a kind of gas generant composition is provided, the gas
For body propellant composition by using strontium titanates and talcum powder collectively as form retention agent, the two synergistic effect fires tablet
It can be good at keeping the form before burning after burning, avoid tablet melting splashing burn airbag after burning, and it is residual to reduce molten copper
Slag.
Another object of the present invention is that providing the preparation method of gas generant composition.
Yet another object of the invention is that providing the application of gas generant composition.
It is yet a further object of the present invention to provide the gas generators comprising above-mentioned gas propellant composition.
What above-mentioned purpose of the invention was mainly achieved by following technical solution:
Gas generant composition, the component including following mass percentage content:
In above-mentioned gas propellant composition, the mass percentage content of the talcum powder is 0.6%~5%.
In above-mentioned gas propellant composition, the component of following mass percentage content is preferably included:
In above-mentioned gas propellant composition, the sum of each component water content of the gas generant composition is not more than
The 1% of each component gross mass.
In above-mentioned gas propellant composition, the partial size D90 of the basic copper nitrate is not more than 5 μm.
In above-mentioned gas propellant composition, the partial size D90 of the talcum powder is not more than 10 μm.
In above-mentioned gas propellant composition, after gas generant composition molding for circular sheet-like structures or
Circular ring shape laminated structure, wherein the diameter of circular sheet-like structures is 3~15mm；The internal diameter of circular ring shape laminated structure is 1~3mm,
Outer diameter is 4~15mm.
A kind of preparation method of gas generant composition, prepares gas generant composition by the way of wet granulation
Object.
Gas generant composition is prepared by the way of wet granulation, and specific preparation process is as follows:
(1), first material is obtained after mixing guanidine nitrate, basic copper nitrate 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 third material by the sieve of 10~40 mesh；
(4), third material is dried, is dried to water content is less than third material gross mass 0.5%, again by
The sieve of 10~40 mesh obtains 4 materials；
(5), talcum powder will be added in 4 materials, carry out material forming.
In the preparation method of above-mentioned gas propellant composition, in the step (1) by guanidine nitrate, basic copper nitrate and
Strontium titanates carries 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 mixing machine.
In the preparation method of above-mentioned gas propellant composition, step (5) material forming obtains round sheet knot
Structure or circular ring shape laminated structure, wherein the diameter of circular sheet-like structures is 3~15mm；The internal diameter of circular ring shape laminated structure is 1
~3mm, outer diameter are 4~15mm.
Gas generant composition is prepared by the way of wet granulation, and specific preparation process is as follows:
(1), first material is obtained after mixing guanidine nitrate, basic copper nitrate, strontium titanates and talcum powder；
(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 third material by the sieve of 10~40 mesh；
(4), third material is dried, is dried to water content is less than third material gross mass 0.5%, again by
The sieve 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 titanates and talcum powder 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 mixing machine.
In the preparation method of above-mentioned gas propellant composition, step (5) material forming obtains round sheet knot
Structure or circular ring shape laminated structure, wherein the diameter of circular sheet-like structures is 3~15mm；The internal diameter of circular ring shape laminated structure is 1
~3mm, outer 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.
Compared with prior art, the present invention has the following advantages:
(1), the present invention cannot be played very for gas generant composition in the prior art using single form retention agent
The defect of good burning form holding effect, by research and a large number of experiments, propose to use strontium titanates and talcum powder collectively as
Form retention agent, while the dosage of the two is given, it is acted synergistically by the two, so that can after the burning of gas-forming agent tablet
The form before burning is kept well, tablet after burning is avoided to melt the burn airbag that splashes, particularly with the high gas hair of combustion temperature
The raw gas-forming agent of agent, especially guanidine nitrate content greater than 35% remains to play the role of form holding of burning well；
(2), the present invention by gas generant composition include guanidine nitrate, basic copper nitrate, strontium titanates and talcum
The content proportion of each component including powder optimizes, and is verified by a large number of experiments, so that gas-forming agent group
Closing object has excellent performance and significant effect, can be good at keeping the shape before burning after the burning of gas-forming agent tablet
State, and molten copper residue can be reduced.
(3), the present composition before shaping, is pelletized using the mode of wet granulation, is made by wet granulation
Technique is simpler, cost is relatively low, low energy consumption, technique is more flexible, and equipment investment is low；
(4), the present invention optimizes the technical process and process conditions of wet granulation, so that preparation process is simple
List is easily achieved, while talcum powder carries out after being mixed together before preparation with remaining component in preparation method of the present invention
Wet process preparation, can also be eventually adding talcum powder, preparation method is more flexible.
Detailed description of the invention
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.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments:
The preparation method of the present invention burning good gas generant composition of slagging properties, specifically comprises the following steps:
(1), first material is obtained after mixing guanidine nitrate, basic copper nitrate and strontium titanates.It is mixed in mixing apparatus
It closes, incorporation time >=5min；Mixing apparatus can be V-Mixer, 3 D multi-directional movement mixer, the mixing of automatic lifting hopper
Machine, vibromill, spiral ribbon mixer or acoustic resonance mixing machine.
(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 distilled water is added.The equipment of wet-mixing is kneader or mixing machine, example
It such as can choose horizontal kneading machine, vertical kneading mixer, spiral ribbon mixer or acoustic resonance mixing machine.
(3), second material is obtained into third material by the sieve of 10~40 mesh；
(4), third material is dried, is dried to water content is less than third material gross mass 0.5%, again by
The sieve of 10~40 mesh obtains 4 materials；Drying equipment can dry for electric heating baking oven, oil bath baking oven, steam drying box, bipyramid
Case, vibrated fluidized bed or band-type vacuum drier.
(5), talcum powder will be added in 4 materials, carry out material forming, molding equipment can be hydraulic press, rotary tablet compression
Machine or powder former.Material forming obtains circular sheet-like structures or circular ring shape laminated structure, wherein circular sheet-like structures
Diameter is 3~15mm；The internal diameter of circular ring shape laminated structure is 1~3mm, and outer diameter is 4~15mm.
The present invention can also mix talcum powder with remaining component before preparation starts simultaneously, i.e., by guanidine nitrate, alkali formula
First material is obtained after copper nitrate, strontium titanates and talcum powder mixing, starts subsequent preparation process later, rear continuous preparation is complete
It is exactly the same.
The gas generant composition that the present invention is prepared is mainly used for automobile safety air bag gas generator.
The present invention also provides a kind of gas generators, are 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 embodiment for three-dimensional multinomial movement mixer, kneader is horizontal kneading machine, is dried
Dry equipment is vacuum drying oven, and molding equipment is rotary pelleting machine.
Comparative example 1
Gas generant composition includes the component of following mass percentage content:
Guanidine nitrate 35%
Basic copper nitrate 59.5%
Strontium titanates 5.5%
After these components are weighed, diameter 5mm, the circle of thickness 1.9mm are pressed by wet granulation and rotary pelleting machine
Piece, it is specific the preparation method comprises the following steps: by guanidine nitrate, basic copper nitrate and strontium titanates by obtaining first material after mixing apparatus mixing；
The distilled water that first material is added 8% is subjected to wet process and mediates 20min, obtains second material, second material is passed through into 10 purposes
Sieve obtains third material；Third material is dried, 0.5% of water content less than third material gross mass is dried to, then
The secondary sieve for passing through 10 mesh obtains 4 materials；4 materials are subjected to material forming by rotary pelleting machine.
The disk of preparation is fitted into test generator, ignition test is carried out.Generator is dissected after test, is observed
Form after tablet burning.
It is as shown in Figure 1 residue aspect graph after gas generant composition tablet burning in comparative example 1 of the present invention；It is right at this
Strontium titanates is simply added into ratio as form retention agent, as seen from the figure after progress air bag generator test, tablet form
Do not keep well.
Such as the following table 1 for the solvable residue of effluent after gas generant composition tablet burning in comparative example 1 of the present invention and not
Molten residue weight statistics；Effluent residue total weight is more than 1 gram in table 1.
Table 1
| Serial number | PH value | Hydrotrope weight (g) | Insoluble matter weight (g) | Gross weight (g) |
| 001 | 5.56 | 1.056 | 0.197 | 1.253 |
| 002 | 5.58 | 0.993 | 0.216 | 1.209 |
| 003 | 5.92 | 1.257 | 0.182 | 1.439 |
| AVE | 5.69 | 1.102 | 0.198 | 1.300 |
Comparative example 2
Gas generant composition includes the component of following mass percentage content:
Guanidine nitrate 39.4%
Basic copper nitrate 60%
Talcum powder 0.6%.
After these components are weighed, diameter 5mm, the circle of thickness 1.9mm are pressed by wet granulation and rotary pelleting machine
Piece, it is specific the preparation method comprises the following steps: by guanidine nitrate, basic copper nitrate by obtaining first material after mixing apparatus mixing；By the first object
The distilled water that material is added 15% carries out wet process and mediates 60min, obtains second material, second material is obtained by the sieve of 40 mesh
Third material；Third material is dried, water content is less than third material gross mass 0.5% is dried to, again by 40
Purpose sieve obtains 4 materials；Talcum powder will be added in 4 materials, material forming is carried out by rotary pelleting machine.
The disk of preparation is fitted into test generator, ignition test is carried out.Generator is dissected after test, is 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；It is right at this
Talcum powder is simply added into ratio as form retention agent.After carrying out the test of air bag generator as seen from the figure, tablet form
Do not keep well.
Such as the following table 2 for the solvable residue of effluent after gas generant composition tablet burning in comparative example 2 of the present invention and not
Molten residue weight counts, and effluent residue total weight substantially exceeds 1 gram in table 2.
Table 2
| Serial number | PH value | Hydrotrope weight (g) | Insoluble matter weight (g) | Gross weight (g) |
| 001 | 5.35 | 1.125 | 0.205 | 1.330 |
| 002 | 5.29 | 1.036 | 0.216 | 1.252 |
| 003 | 5.63 | 1.356 | 0.238 | 1.594 |
| AVE | 5.42 | 1.172 | 0.220 | 1.392 |
Embodiment 1
Gas generant composition includes the component of following mass percentage content:
Guanidine nitrate 35%
Basic copper nitrate 58%
Strontium titanates 5.5%
Talcum powder 1.5%.
After these components are weighed, diameter 5mm, the circle of thickness 1.9mm are pressed by wet granulation and rotary pelleting machine
Piece, it is specific the preparation method comprises the following steps: by guanidine nitrate, basic copper nitrate and strontium titanates by obtaining first material after mixing apparatus mixing；
The distilled water that first material is added 8% is subjected to wet process and mediates 20min, obtains second material, second material is passed through into 10 purposes
Sieve obtains third material；Third material is dried, 0.5% of water content less than third material gross mass is dried to, then
The secondary sieve for passing through 10 mesh obtains 4 materials；Talcum powder will be added in 4 materials, by rotary pelleting machine carry out material at
Type.
The disk of preparation is fitted into test generator, ignition test is carried out.Generator is dissected after test, is 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 count for the solvable residue of effluent after gas generant composition tablet burning in the embodiment of the present invention 1 and insoluble residue weight；
Strontium titanates and talcum powder is added collectively as form retention agent simultaneously in the present embodiment, the two plays good synergistic effect,
After carrying out the test of air bag generator as shown in Figure 3, tablet form is kept well.Effluent residue gross weight in table 3
Amount is lower than 1 gram.
Table 3
| Serial number | PH value | Hydrotrope weight (g) | Insoluble matter weight (g) | Gross weight (g) |
| 001 | 5.81 | 0.842 | 0.061 | 0.903 |
| 002 | 5.73 | 0.778 | 0.022 | 0.800 |
| 003 | 6.02 | 0.863 | 0.056 | 0.919 |
| AVE | 5.85 | 0.828 | 0.046 | 0.874 |
Embodiment 2
Gas generant composition includes the component of following mass percentage content:
Guanidine nitrate 60%
Basic copper nitrate 25%
Strontium titanates 10%
Talcum powder 5%.
After these components are weighed, diameter 5mm, the circle of thickness 1.9mm are pressed by wet granulation and rotary pelleting machine
Piece, it is specific the preparation method comprises the following steps: by guanidine nitrate, basic copper nitrate and strontium titanates by obtaining first material after mixing apparatus mixing；
The distilled water that first material is added 15% is subjected to wet process and mediates 60min, obtains second material, second material is passed through into 40 purposes
Sieve obtains third material；Third material is dried, 0.5% of water content less than third material gross mass is dried to, then
The secondary sieve for passing through 40 mesh obtains 4 materials；Talcum powder will be added in 4 materials, by rotary pelleting machine carry out material at
Type.
The disk of preparation is fitted into test generator, ignition test is carried out.Generator is dissected after test, is 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 count for the solvable residue of effluent after gas generant composition tablet burning in the embodiment of the present invention 2 and insoluble residue weight；
Strontium titanates and talcum powder is added collectively as form retention agent simultaneously in the present embodiment, the two plays good synergistic effect,
After carrying out the test of air bag generator as seen from the figure, tablet form is kept well.Effluent residue total weight in table 4
Only 0.330 gram.
Table 4
| Serial number | PH value | Hydrotrope weight (g) | Insoluble matter weight (g) | Gross weight (g) |
| 001 | 6.15 | 0.339 | 0.015 | 0.354 |
| 002 | 5.96 | 0.335 | 0.026 | 0.361 |
| 003 | 5.81 | 0.256 | 0.018 | 0.274 |
| AVE | 5.97 | 0.310 | 0.020 | 0.330 |
Embodiment 3
Gas generant composition includes the component of following mass percentage content:
Guanidine nitrate 50%
Basic copper nitrate 40%
Strontium titanates 9.4%
Talcum powder 0.6%.
After these components are weighed, diameter 5mm, the circle of thickness 1.9mm are pressed by wet granulation and rotary pelleting machine
Piece, it is specific the preparation method comprises the following steps: by guanidine nitrate, basic copper nitrate and strontium titanates by obtaining first material after mixing apparatus mixing；
The distilled water that first material is added 10% is subjected to wet process and mediates 30min, obtains second material, second material is passed through into 20 purposes
Sieve obtains third material；Third material is dried, 0.5% of water content less than third material gross mass is dried to, then
The secondary sieve for passing through 20 mesh obtains 4 materials；Talcum powder will be added in 4 materials, by rotary pelleting machine carry out material at
Type.
The disk of preparation is fitted into test generator, ignition test is carried out.Generator is dissected after test, is 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 count for the solvable residue of effluent after gas generant composition tablet burning in the embodiment of the present invention 3 and insoluble residue weight.
Strontium titanates and talcum powder is added collectively as form retention agent simultaneously in the present embodiment, the two plays good synergistic effect,
After carrying out the test of air bag generator as seen from the figure, tablet form is kept well.Effluent residue total weight in table 5
Lower than 1 gram.
Table 5
| Serial number | PH value | Hydrotrope weight (g) | Insoluble matter weight (g) | Gross weight (g) |
| 001 | 5.68 | 0.653 | 0.056 | 0.709 |
| 002 | 5.77 | 0.558 | 0.020 | 0.578 |
| 003 | 5.63 | 0.762 | 0.059 | 0.821 |
| AVE | 5.69 | 0.658 | 0.045 | 0.703 |
Embodiment 4
Gas generant composition includes the component of following mass percentage content:
Guanidine nitrate 49%
Basic copper nitrate 41%
Strontium titanates 7.5%
Talcum powder 2.5%.
After these components are weighed, diameter 5mm, the circle of thickness 1.9mm are pressed by wet granulation and rotary pelleting machine
Piece, it is specific the preparation method comprises the following steps: by guanidine nitrate, basic copper nitrate, strontium titanates and talcum powder by obtaining the after mixing apparatus mixing
One material；The distilled water that first material is added 12% is subjected to wet process and mediates 40min, second material is obtained, second material is led to
The sieve for crossing 25 mesh obtains third material；Third material is dried, is dried to water content less than third material gross mass
0.5%, 4 materials are obtained again by the sieve of 25 mesh；By 4 materials directly by rotary pelleting machine carry out material at
Type.
The disk of preparation is fitted into test generator, ignition test is carried out.Generator is dissected after test, is 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 count for the solvable residue of effluent after gas generant composition tablet burning in the embodiment of the present invention 4 and insoluble residue weight.
Strontium titanates and talcum powder is added weighs mixing together simultaneously in the present embodiment, and collectively as form retention agent, the two is played very
Good synergistic effect, after carrying out the test of air bag generator as seen from the figure, tablet form is kept well.It is arranged in table 6
Object residue total weight is lower than 1 gram out.
Table 6
| Serial number | PH value | Hydrotrope weight (g) | Insoluble matter weight (g) | Gross weight (g) |
| 001 | 5.68 | 0.356 | 0.033 | 0.389 |
| 002 | 5.23 | 0.505 | 0.028 | 0.533 |
| 003 | 5.56 | 0.439 | 0.048 | 0.487 |
| AVE | 5.49 | 0.433 | 0.036 | 0.470 |
Three groups of parallel tests are made in the above-mentioned comparative example of the present invention and embodiment and have been averaged.
The above, optimal specific embodiment only of the invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
The content that description in the present invention is not described in detail belongs to the well-known technique of professional and technical personnel in the field.
Claims (16)
1. gas generant composition, it is characterised in that: the component including following mass percentage content:
2. gas generant composition according to claim 1, it is characterised in that: the gas generant composition it is each
The sum of component water content is not more than the 1% of each component gross mass.
3. gas generant composition according to claim 1, it is characterised in that: the partial size D90 of the basic copper nitrate
No more than 5 μm.
4. gas generant composition according to claim 1, it is characterised in that: the partial size D90 of the talcum powder is little
In 10 μm.
5. gas generant composition according to claim 1, it is characterised in that: the gas generant composition molding
It is afterwards circular sheet-like structures or circular ring shape laminated structure, wherein the diameter of circular sheet-like structures is 3~15mm；Circular ring shape sheet
The internal diameter of structure is 1~3mm, and outer diameter is 4~15mm.
6. the preparation method of gas generant composition described in one of Claims 1 to 5, it is characterised in that: use wet process system
The mode of grain prepares gas generant composition.
7. the preparation method of gas generant composition according to claim 6, it is characterised in that: specific preparation method packet
Include following steps:
(1), first material is obtained after mixing guanidine nitrate, basic copper nitrate 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 third material by the sieve of 10~40 mesh；
(4), third material is dried, is dried to water content is less than third material gross mass 0.5%, again by 10~
The sieve of 40 mesh obtains 4 materials；
(5), talcum powder will be added in 4 materials, carry out material forming.
8. the preparation method of gas generant composition according to claim 7, it is characterised in that: in the step (1)
Guanidine nitrate, basic copper nitrate and strontium titanates are carried out to be mixed to get first material, incorporation time >=5min in mixing apparatus.
9. the preparation method of gas generant composition according to claim 7, it is characterised in that: in the step (2)
The time of wet-mixing is 20min~60min；The equipment of wet-mixing is kneader or mixing machine.
10. the preparation method of the gas generant composition according to one of claim 7~9, it is characterised in that: the step
Suddenly material forming obtains circular sheet-like structures or circular ring shape laminated structure in (5), wherein the diameter of circular sheet-like structures be 3~
15mm；The internal diameter of circular ring shape laminated structure is 1~3mm, and outer diameter is 4~15mm.
11. the preparation method of gas generant composition according to claim 6, it is characterised in that: specific preparation method
Include the following steps:
(1), first material is obtained after mixing guanidine nitrate, basic copper nitrate, 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 third material by the sieve of 10~40 mesh；
(4), third material is dried, is dried to water content is less than third material gross mass 0.5%, again by 10~
The sieve of 40 mesh obtains 4 materials；
(5), 4 materials are subjected to 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 guanidine nitrate, basic copper nitrate, strontium titanates and talcum powder in mixing apparatus to be mixed to get first material, incorporation time
≥5min。
13. the preparation method of gas generant composition described in claim 11, it is characterised in that: wet in the step (2)
The time of method mixing is 20min~60min；The equipment of wet-mixing is kneader or mixing machine.
14. the preparation method of gas generant composition described in one of 1~13 according to claim 1, it is characterised in that: described
Material forming obtains circular sheet-like structures or circular ring shape laminated structure in step (5), and wherein the diameter of circular sheet-like structures is 3
~15mm；The internal diameter of circular ring shape laminated structure is 1~3mm, and outer diameter is 4~15mm.
15. the application of 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.
16. a kind of gas generator, it is characterised in that: using gas generant composition described in one of Claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711003995.7A CN107698414B (en) | 2017-10-24 | 2017-10-24 | Gas generant composition, preparation method, application and gas generator |
| PCT/CN2018/074442 WO2019080396A1 (en) | 2017-10-24 | 2018-01-29 | Gas generating agent composition, preparation method, application, and gas generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711003995.7A CN107698414B (en) | 2017-10-24 | 2017-10-24 | Gas generant composition, preparation method, application and gas generator |
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| JP2009512613A (en) * | 2005-09-29 | 2009-03-26 | オートモーティブ システムズ ラボラトリィ、 インク． | Gas generant |
| FR2975097B1 (en) * | 2011-05-09 | 2015-11-20 | Sme | PYROTECHNIC COMPOUNDS GENERATORS OF GAS |
| DE102012004468A1 (en) * | 2012-03-08 | 2013-09-12 | Trw Airbag Systems Gmbh | Gas generating composition and its use in pedestrian protection devices |
| CN104418677A (en) * | 2013-08-27 | 2015-03-18 | 湖北航天化学技术研究所 | Gas generation agent and preparation method |
| FR3022906B1 (en) * | 2014-06-30 | 2016-07-15 | Herakles | MONOLITHIC PYROTECHNIC BLOCKS GENERATORS OF GAS |
| CN105294370B (en) * | 2015-05-22 | 2018-09-11 | 湖北汉伟新材料有限公司 | A kind of gas generator ultra-fine guanidine nitrate and its preparation process |
| CN107698415A (en) * | 2017-10-24 | 2018-02-16 | 湖北航鹏化学动力科技有限责任公司 | A kind of gas generant composition, preparation method, application and gas generator |
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| WO2019080396A1 (en) | 2019-05-02 |
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