WO2008013017A1 - Agent d'allumage, initiateur, générateur de gaz, dispositif airbag, et dispositif de courroie en feuille - Google Patents

Agent d'allumage, initiateur, générateur de gaz, dispositif airbag, et dispositif de courroie en feuille Download PDF

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Publication number
WO2008013017A1
WO2008013017A1 PCT/JP2007/062581 JP2007062581W WO2008013017A1 WO 2008013017 A1 WO2008013017 A1 WO 2008013017A1 JP 2007062581 W JP2007062581 W JP 2007062581W WO 2008013017 A1 WO2008013017 A1 WO 2008013017A1
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WO
WIPO (PCT)
Prior art keywords
gas generator
weight
initiator
perchlorate
igniting agent
Prior art date
Application number
PCT/JP2007/062581
Other languages
English (en)
Japanese (ja)
Inventor
Hiroshi Nishinaga
Takashi Furusawa
Daizo Fukuma
Yuichiro Yamashita
Kazuya Asahi
Hidetsugu Nakamura
Original Assignee
Takata Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takata Corporation filed Critical Takata Corporation
Publication of WO2008013017A1 publication Critical patent/WO2008013017A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
    • C06B33/12—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being two or more oxygen-yielding compounds
    • C06B33/14—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide the material being two or more oxygen-yielding compounds at least one being an inorganic nitrogen-oxygen salt
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C9/00—Chemical contact igniters; Chemical lighters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/12—Bridge initiators
    • F42B3/128—Bridge initiators characterised by the composition of the pyrotechnic material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/195—Manufacture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
    • B60R22/4628—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators
    • B60R2022/4642—Reels with means to tension the belt in an emergency by forced winding up characterised by fluid actuators, e.g. pyrotechnic gas generators the gas directly propelling a flexible driving means, e.g. a plurality of successive masses, in a tubular chamber
    • 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
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • 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

Definitions

  • Ignition Ignition, initiator, gas generator, airbag device and seat belt device
  • the present invention relates to an ignition agent, an initiator using the ignition agent, and a gas generator including the initiator.
  • This gas generator is incorporated in, for example, an air nog device such as an automobile or a seat belt device.
  • An airbag device provided in a high-speed moving body such as an automobile is configured to rapidly inflate a bag-like airbag with a gas generator called an inflator.
  • the gas generator includes a gas generating agent and an initiator for starting a gas generating reaction of the gas generating agent.
  • the initiator includes a reactive agent and a filament (bridge wire) as a resistance heating element for initiating the reaction of the reactive agent (for example, US Pat. No. 5,404,263).
  • the initiator 10 has a substantially cup-shaped casing 12 whose rear part (lower part in Fig. 1) is open.
  • An ignition powder 14 is accommodated in the casing 12.
  • the rear portion of the casing 12 is closed by an insulating material 16 made of sintered glass or the like.
  • the front ends of a pair of electrodes 18 and 20 that penetrate the insulating material 16 face.
  • a filament 22 is provided between the tip portions of the electrodes 18, 20. Both ends of the filament 22 are welded to the tip surfaces of the electrodes 18 and 20. The filament 22 enters the casing 12 and contacts the ignition powder 14.
  • the electrodes 18 and 20 and the casing 12 are spaced apart from each other so as not to make electrical contact.
  • one electrode 18 is connected to the positive electrode of the automobile battery 26 via the control circuit 24 including a voltage booster circuit and the like, and the other electrode 18 is connected.
  • the pole 20 is connected to the car body (ground connection).
  • the negative electrode of the battery 26 is connected to the vehicle body.
  • the switch element in the control circuit 24 is turned on, and a voltage is applied from the battery 26 to the filament 22 via the electrodes 18 and 20.
  • the filament 22 generates heat
  • the ignition powder 14 is ignited, and the reaction starts.
  • the reaction of the igniting agent 14 generates high-pressure gas and heat, and the gas generating agent in the gas generator causes a gas generating reaction.
  • the gas generator 30 includes a container including an outer shell body including an upper housing 32 and a lower housing 34, and a cylindrical partition member 36 installed in the outer shell body. One end of the partition member 36 passes through the opening on the bottom surface of the lower housing 34 and protrudes downward. The inner peripheral surface of the opening and the outer peripheral surface of the partition member 36 are welded by laser beam welding or the like.
  • An ignition agent (booster propellant) 40 is accommodated inside the partition member 36, and a gas generating agent (main propellant) 42 is accommodated on the outer peripheral side of the partition member 36.
  • An initiator 10 is installed at one end of the partition member 36.
  • gas is ejected from the opening 44 of the partition member 36 and the gas generating agent 42 is ignited, and a large amount of gas is rapidly generated.
  • the air bag is inflated through 46 and through the opening 48 to the outside of the gas generator 30.
  • Fig. 2 is an example of a gas generator, and many types of gas generators with shapes other than those shown are used.
  • the Patent Kohyo 2003- 527276 includes M g 10 to 50 weight 0/0, the MgAl alloy powder A150 ⁇ 90 weight 0/0 a composition as a fuel component, strontium nitrate, alkali metals as an oxidizing agent An igniter comprising a nitrate and a combination thereof is described.
  • perchlorate such as potassium perchlorate is also effective as an oxidant for the ignition agent, and the present applicant has previously described a composition of Mg: 55 to 70% by weight and A1: balance.
  • igniting agent containing at least one selected from the group was proposed (Japanese Patent Application No. 2005-164226). This igniting agent further contains a resin binder such as silicone resin.
  • Patent Document 1 US Pat. No. 5,404,263
  • Patent Document 2 Special Table 2003-527276
  • Patent Document 3 Japanese Patent Application No. 2005-164226
  • An ignition agent containing MgAl alloy or MgAl-based alloy as a fuel component, perchlorate such as perchloric acid lithium as an oxidant, and silicone resin as a resin binder (hereinafter referred to as "MAPP-based material”), it has excellent ignition performance, but its sensitivity to mechanical energy such as frictional impact is high, so it is necessary to reduce the friction sensitivity so that it can be handled safely during mass production. .
  • the present invention relates to an ignition agent having reduced sensitivity to mechanical energy such as friction of a MAPP-based ignition agent, and improved handling in mass production, etc., and an initiator having the ignition agent, It is an object of the present invention to provide a gas generator provided with an initiator, and an airbag device and a seat belt device provided with the gas generator.
  • the igniting agent of the present invention contains MgAl alloy and Z or MgAl alloy powder having an Mg content of 20 to 70% by weight as fuel components, and contains perchlorate and potassium nitrate as oxidizing agents. It is a feature.
  • the initiator of the present invention comprises the powerful ignition agent of the present invention.
  • the gas generator of the present invention includes the initiator of the present invention.
  • the airbag device of the present invention includes the gas generator of the present invention.
  • the seatbelt device of the present invention is a seatbelt device including a seatbelt and a pretensioner that applies pretension to the seatbelt by gas pressure from a gas generator in an emergency, and the gas Generator force S is the gas generator of the present invention.
  • FIG. 1 is a cross-sectional view showing an example of an initiator.
  • FIG. 2 is a cross-sectional view showing an example of a gas generator.
  • FIG. 3 is a longitudinal sectional view of an airbag apparatus equipped with the gas generator of FIG.
  • FIG. 4 is an overall view of a seat belt apparatus provided with a gas generator.
  • FIG. 5 is an exploded perspective view of the retractor of the seat belt device of FIG.
  • the igniting agent of the first aspect includes MgAl alloy and Z or MgAl-based alloy powder having an Mg content of 20 to 70% by weight as a fuel component, and perchlorate and potassium nitrate as oxidants. It is characterized by this.
  • the ignition agent of the second aspect is characterized in that, in the first aspect, the perchlorate is potassium perchlorate.
  • the ignition agent of the third aspect is that in the first or second aspect, the content ratio of potassium nitrate relative to the total of perchlorate and potassium nitrate in the oxidizing agent is 5 to 30% by weight. It is a characteristic feature.
  • the ignition agent of the fourth aspect is characterized in that, in any of the first to third aspects, boron powder or tungsten powder is contained as a fuel component.
  • the igniting agent according to the fifth aspect includes, in any one of the first to fourth aspects, 40 to 90 parts by weight (100 parts by weight in total) of an oxidizing agent with respect to 10 to 60 parts by weight of the fuel component. It is a feature.
  • the igniting agent of the sixth aspect is characterized in that, in any one of the first to fifth aspects, a resin binder or a rubber binder is contained.
  • the igniting agent of the seventh aspect is characterized in that, in the sixth aspect, the resin binder is a silicone resin and the rubber binder is a fluoro rubber.
  • the initiator according to the eighth aspect comprises the ignition powder according to any one of the first to seventh aspects.
  • the gas generator of the ninth aspect includes the initiator of the eighth aspect.
  • the airbag device includes the gas generator according to the ninth aspect.
  • the seat belt device is a seat belt device comprising a seat belt and a pretensioner that applies pretension to the seat belt by gas pressure from a gas generator in an emergency.
  • the gas generator is the gas generator of the ninth aspect. Is.
  • the present invention is based on such knowledge, and provides an igniting agent excellent in handling property and igniting performance by blending potassium nitrate with perchlorate as an oxidizing agent.
  • the average particle size of the fuel component and the oxidant powder is a value measured by, for example, a laser diffraction Z scattering type particle size distribution measuring apparatus.
  • the ignition agent of the present invention includes MgAl alloy powder and Z or MgAl-based alloy powder as fuel components.
  • the composition of the MgAl alloy powder Mg20 ⁇ 70 weight 0/0, A130 ⁇ 80 weight 0/0, preferably Mg35 ⁇ 65 weight 0/0, A135 ⁇ 65 wt%.
  • the ignition time of the ignition powder can be shortened.
  • the Mg content 70% by weight or less the MgAl alloy can be easily crushed, and the production cost of the ignition agent can be reduced.
  • At least one metal of Ca, Mn, Li, Si, Sb, Sr, Zn, Zr, Sc, Y, Sn, Ba and a rare earth metal (hereinafter referred to as an additive metal)
  • an additive metal a rare earth metal
  • the powder of MgAl alloy to which) is added has the same effect.
  • this additive metal by adding this additive metal, the ignition time of the igniting agent can be shortened and stabilized, and the ignition performance at a high temperature can be improved. Furthermore, adding this additive metal improves the grindability of the alloy.
  • the additive metal is preferably added so as to be 0.5 to 10% by weight in the MgAl-based alloy. Even when the additive metal is added, the Mg content in the MgAl-based alloy is 20 to 70% by weight, preferably 30 to 60% by weight. Further, the ratio of Mg and A1 in the balance other than the additive metal is preferably a weight ratio of MgZ (Mg + Al) of 0.4 to 0.7, more preferably 0.40 to 0.65.
  • Ca is particularly suitable.
  • the alloy After melting, the alloy is finely pulverized, for example, using a ball mill, preferably in a non-acidic atmosphere such as nitrogen or argon.
  • the average particle size of the powder is preferably 10 / z m or less, 1 to 10 m, particularly 5 to 9 ⁇ m.
  • the fuel component may be composed only of the MgAl alloy powder and Z or MgAl alloy powder. Other than the MgAl alloy powder and Z or MgAl alloy, It may contain fuel components. Boron (B) powder or tungsten (W) powder can be used as fuel components other than MgAl alloy powder and Z or MgAl alloy, and MgAl alloy powder and part of Z or MgAl alloy can be used as B powder or W Substitution with powder has the effect of reducing friction sensitivity.
  • the proportion of B powder in the total fuel component is preferably 10% by weight or less, and the proportion of W powder is preferably 50% by weight or less. If this ratio is too large, the ignition performance is lowered.
  • the average particle size of the B powder and the W powder is preferably 10 ⁇ m or less, 1 to 10 ⁇ m, and particularly preferably 5 to 9 ⁇ m.
  • perchlorate and potassium nitrate (KNO 3) are used as the oxidizing agent.
  • perchlorates include potassium perchlorate (KCIO), ammonium perchlorate (NH).
  • the content of potassium nitrate in the oxidizer is 5 to 30% by weight, particularly 5 to 20% by weight, based on the weight ratio of potassium nitrate to the total of perchlorate and potassium nitrate calculated by the following formula. Is preferred.
  • nitrate weight Z Potassium nitrate weight Z (perchlorate weight + potassium nitrate weight) X 100 [0041]
  • the oxidizing agent components other than perchlorate and potassium nitrate, for example, KCIO, KIO, KI
  • the oxidizing agent is composed of 80% by weight or more, particularly 100% by weight, of potassium nitrate and perchlorate such as potassium perchlorate. ,.
  • the average particle diameter of this oxidizing agent is also preferably 10 m or less, 1 to: LO / zm, particularly 5 to 9 m.
  • the oxidizer may be pulverized by a ball mill, a jet mill or the like.
  • the oxidizing agent may be pulverized separately for each component and then mixed, or may be pulverized together after previously mixing at a predetermined blending ratio.
  • the oxidizing agent is blended at a ratio of 90 to 40 parts by weight (a total of 100 parts by weight) with respect to 10 to 60 parts by weight of the fuel component. Even if there are more fuel components and less oxidizer than this ratio, and conversely, there are more oxidizers and less fuel components, the ignition performance will be reduced in any case, and the time required for ignition will be longer.
  • the ignition agent of the present invention may be composed of only the above-mentioned ignition components, that is, the fuel component and the oxidizer, but is preferably a resin binder such as silicone resin or a rubber binder such as fluorine rubber. including. By blending a resin binder such as silicone resin or a rubber binder such as fluorine rubber, the igniting agent can be handled easily.
  • the blending amount of the resin binder or the rubber binder is preferably 0.5 to 20 parts by weight, particularly about 1 to 15 parts by weight with respect to 100 parts by weight of the ignition component. If the blending amount of the resin binder or rubber binder is too large, the ignition performance of the igniting agent will be reduced, and if it is too small, the effect of improving the handleability by blending the resin binder or rubber binder can be sufficiently obtained. Can not ,.
  • Such an igniting agent is filled in the initiator as shown in FIG. 1, for example.
  • This initiator is incorporated into the gas generator as shown in FIG.
  • the construction of the gas generator is not particularly limited, and can be applied to various types other than those shown.
  • FIG. 3 is a longitudinal sectional view of an airbag apparatus provided with the gas generator of FIG.
  • the air bag device 80 includes a gas generator 30 shown in FIG. 2, an air bag 81 that is inflated by gas from the gas generator 30, and a retainer that holds the gas generator 30 and the air bag 81. 8
  • the airbag 81 has a front surface facing a vehicle occupant and the like when inflated and a rear surface opposite to the front surface, and an opening, that is, a mouth portion 8 into which the gas generator 30 is inserted. It has la.
  • the retainer 82 includes a main plate portion 82a and leg piece portions 82b bent downward from the peripheral edge portion of the main plate portion 82a.
  • a gas generator insertion port 82c is provided at the center of the main plate 82a. As shown in FIG. 3, the front side of the gas generator 30 is inserted into the gas generator insertion port 82c from the back side of the main plate portion 82a.
  • the base portion 81a of the airbag 81 is overlapped with the peripheral edge portion of the gas generator insertion port 82c, and is fixed by a mounting ring 84.
  • the front side of the gas generator 30 is disposed in the airbag 81 through the mouth portion 8 la.
  • a stud bolt 84a protrudes from the mounting ring 84, and this bolt 84a is connected to each through-hole (reference numeral omitted) around the mouth portion 8la and around the gas generator insertion port 82c, and a flange.
  • the air bag 81 and the gas generator 30 are fixed to the retainer 82 when the nut 84b is fastened to the bolt 84a. .
  • the airbag device 80 is configured by folding the airbag 81 and attaching a module cover 83 so as to cover the folded body of the airbag 81.
  • a leg piece 83a is erected downward from the back surface of the module cover 83, and the leg piece 83a is fixed to the leg piece of the retainer 82 by a fixing tool 83b such as a rivet. Fixed to 82b.
  • the module cover 83 is configured to be pushed and cleaved by the air nog 81 when the airbag is inflated.
  • Reference numeral 83c denotes a tear line that induces this cleavage.
  • the gas generating agent 42 is ignited by the high temperature gas from the igniting agent 40 through the opening 44 to generate gas.
  • This gas passes through the filter 46, and the opening 48 force is also ejected into the airbag 81.
  • the airbag 81 is inflated.
  • the air nod 81 inflates and expands the module cover 83 so as to face the vehicle occupant and the like, thereby protecting the vehicle occupant and the like.
  • FIG. 4 is an overall view of a seat belt device provided with a gas generator
  • FIG. 5 is an exploded perspective view of a pretensioner of a retractor of the seat belt device.
  • One end of the seat belt 91 of the seat belt device 90 is connected to a retractor 92 so as to be able to be wound, and the other end is fixed to the vehicle body by an anchor 93.
  • the middle part of the seat belt 91 is passed through a shoulder anchor 94 and a tanda 95, respectively.
  • the anchor 93 is disposed on the side of the seat side of the passenger compartment.
  • On the side of the seat opposite to the anchor 93 a buckle device 96 for latching the tanda 95 is provided.
  • the shoulder anchor 94 is arranged at the upper part of the side surface of the passenger compartment.
  • the retractor 92 absorbs the pretensioner that holds the pretension with respect to the seat belt 91 in the event of a vehicle emergency, and the shock absorption that absorbs the impact that is received from the seat belt 91 by the occupant.
  • Mechanism EA mechanism
  • the configuration of the retractor 92 will be described below with reference to FIG.
  • a spool 98 is accommodated in the base frame 97 of the retractor 92, and one end side of the seat belt 91 is wound around the spool 98. As the spool 98 rotates, the seat belt 91 is wound and unwound.
  • a torsion bar 99 is disposed at the shaft center of the spool 98, and one end of the torsion bar 99 is supported by the support member 102 via the lock mechanism parts 100 and 101.
  • the torsion bar 99 is a main part of the EA mechanism. When the tension of the seat belt 91 exceeds a predetermined value, the torsion bar 99 is plastic torsionally deformed. Rotate to.
  • a gear 103 is provided at one end of the spool 98, that is, at the left end in FIG. This A 103 is engaged with a gear (not shown) in the return spring cover 104 shown at the lower left end of the lower stage of FIG.
  • the spool 98 is biased in the direction of winding the seat belt 91 by a return spring (not shown) in the return spring cover 104.
  • a pipe 107 is provided between the pretensioner cover 105 shown on the right side of the return spring cover 104 in FIG. 5 and the pretensioner plate 106 shown on the lower right end of FIG. It has been.
  • a gas generator 108 is attached to one end of the pipe 107.
  • a spring 109, a piston 110, and a plurality of balls 111 are arranged inside the pipe 107.
  • a notch-like opening (not shown) is formed on the side surface near the other end of the pipe 107.
  • a guide block 112 is fitted on the other end side of the pipe 107.
  • the pretensioner cover 105 is provided with a pin 113, and a ring gear 114 having external teeth and internal teeth is held on the pin 113.
  • the pipe 107 is arranged so as to go around the outer periphery of the ring gear 114.
  • the pipe 107 is arranged such that the direction in which the one end side force toward the other end side is the seat belt winding rotation direction of the spool 98.
  • the opening is disposed so as to face the outer peripheral surface of the ring gear 104, and the leading ball 111 exposed in the opening engages with the outer teeth of the ring gear 104.
  • the root portion 115 of the gear 103 is provided with a pione 116 capable of meshing with the internal teeth of the ring gear 114.
  • the spool 98 is urged in the seat belt winding rotation direction by the gas pressure from the gas generator 108 via the pinion 116, the ring gear 114 and the ball 111, and The belt 91 is wound up. As a result, the seat belt 91 is pretensioned. Yong is added.
  • the gas generator 108 includes a substantially cylindrical housing, and the gas generating agent and the initiator 10 shown in FIG. 1 are accommodated in the housing.
  • the ignition agent 14 reacts, whereby the gas generating agent is ignited and gas is generated. Then, gas is ejected from the gas generator 108 into the pipe 107 by this gas pressure. As a result, the pretensioner mechanism of the retractor 92 operates as described above to apply pretension to the seat belt 91.
  • each of the above embodiments is an example of the present invention, and the present invention may take forms other than those illustrated.
  • the initiator of the present invention can be incorporated into various gas generators other than those described above.
  • this gas generator can be incorporated into various airbag devices and seat belt devices other than those described above.
  • MgAl alloy powder a MgAl alloy of Mg: 50 wt% and Al: 50 wt% pulverized to an average particle diameter of about 7 m by a ball mill was used.
  • oxidizing agent KCIO and KNO were separately averaged by a ball mill.
  • the product was pulverized to an average particle size of about 7 ⁇ m with a 4-ball mill.
  • the resin binder a solution obtained by dissolving about 5 ml of isoamyl acetate in lg of liquid silicone resin binder was used.
  • This silicone resin binder is a room temperature curable type, and solidifies after the solvent evaporates.
  • the components shown in Table 1 were mixed and dried to prepare an ignition agent.
  • the resulting ignition agent was examined for friction sensitivity and ignition performance by the following methods.
  • Table 1 shows the KNO ratio.
  • An initiator was assembled by weighing 50 mg of the igniting agent into a metal cup and press-fitting a header with ⁇ 20 m-chrome wire welded with a fixed presser (1000 N). By passing a constant current of 1.2AX 2ms through the initiator assembled in this way and detecting the light at the time of ignition by an optical sensor, the time required for ignition is measured, and this is evaluated and evaluated. did. The measurement was performed 7 times, and the average value was shown.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Air Bags (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

La présente invention concerne un agent d'allumage qui comprend un alliage de Mg-Al ou un alliage à base de Mg-Al en tant qu'ingrédient combustible, un perchlorate tel que du perchlorate de potassium en tant qu'agent oxydant, et une résine de silicone en tant que liant résineux et dont la sensibilité à la friction est réduite et ainsi possède une maniabilité optimisée dans la production en série, etc. ; un initiateur qui possède cet agent d'allumage ; un générateur de gaz qui comprend cet initiateur ; un dispositif airbag pourvu de ce générateur de gaz ; et un dispositif de courroie en feuille. L'agent d'allumage comprend une poudre d'un alliage de Mg-Al et/ou alliage à base de Mg-Al qui possède une teneur en magnésium de 20 à 70 % en poids en tant qu'ingrédient combustible et un perchlorate et nitrate de potassium en tant qu'agents oxydants. Cet agent d'allumage est contenu dans l'initiateur. En remplaçant une partie du perchlorate avec du nitrate de potassium, la sensibilité à une énergie mécanique, par exemple la sensibilité à la friction, de l'agent d'allumage peut être réduite sans réduire les performances d'allumage inhérentes à celui-ci.
PCT/JP2007/062581 2006-07-26 2007-06-22 Agent d'allumage, initiateur, générateur de gaz, dispositif airbag, et dispositif de courroie en feuille WO2008013017A1 (fr)

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JP2006203448A JP2008030970A (ja) 2006-07-26 2006-07-26 着火薬、イニシエータ、ガス発生器、エアバッグ装置及びシートベルト装置
JP2006-203448 2006-07-26

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JP2012180259A (ja) * 2010-03-19 2012-09-20 Toyoda Gosei Co Ltd 発熱組成物、及びその製造方法
JP6007021B2 (ja) * 2012-07-31 2016-10-12 中国化薬株式会社 電気***用の点火剤
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