WO1999041213A1 - Frühzündpulver für thermische sicherungen für airbag-gasgeneratoren - Google Patents
Frühzündpulver für thermische sicherungen für airbag-gasgeneratoren Download PDFInfo
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- WO1999041213A1 WO1999041213A1 PCT/DE1999/000414 DE9900414W WO9941213A1 WO 1999041213 A1 WO1999041213 A1 WO 1999041213A1 DE 9900414 W DE9900414 W DE 9900414W WO 9941213 A1 WO9941213 A1 WO 9941213A1
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- WIPO (PCT)
- Prior art keywords
- weight
- powder according
- early
- parts
- stabilizer
- Prior art date
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- 239000000843 powder Substances 0.000 title claims abstract description 34
- 239000000203 mixture Substances 0.000 claims abstract description 26
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000446 fuel Substances 0.000 claims abstract description 16
- 239000007800 oxidant agent Substances 0.000 claims abstract description 16
- 239000003381 stabilizer Substances 0.000 claims abstract description 16
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 9
- -1 polypropylenes Polymers 0.000 claims description 12
- 229920002678 cellulose Polymers 0.000 claims description 9
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 8
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 8
- 239000001913 cellulose Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 5
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical class [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 4
- 229920002647 polyamide Polymers 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 235000013539 calcium stearate Nutrition 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 235000019359 magnesium stearate Nutrition 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 229910052582 BN Inorganic materials 0.000 claims description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 229920003086 cellulose ether Polymers 0.000 claims description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical class OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 229920001748 polybutylene Polymers 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920006324 polyoxymethylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims 2
- 229910052593 corundum Inorganic materials 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 10
- 238000000354 decomposition reaction Methods 0.000 description 8
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 8
- 230000004580 weight loss Effects 0.000 description 6
- 239000000020 Nitrocellulose Substances 0.000 description 5
- 229920001220 nitrocellulos Polymers 0.000 description 5
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 235000010333 potassium nitrate Nutrition 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- DOOTYTYQINUNNV-UHFFFAOYSA-N Triethyl citrate Chemical compound CCOC(=O)CC(O)(C(=O)OCC)CC(=O)OCC DOOTYTYQINUNNV-UHFFFAOYSA-N 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- WQZGKKKJIJFFOK-SVZMEOIVSA-N (+)-Galactose Chemical compound OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@H]1O WQZGKKKJIJFFOK-SVZMEOIVSA-N 0.000 description 2
- IDCPFAYURAQKDZ-UHFFFAOYSA-N 1-nitroguanidine Chemical compound NC(=N)N[N+]([O-])=O IDCPFAYURAQKDZ-UHFFFAOYSA-N 0.000 description 2
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 2
- FCSHMCFRCYZTRQ-UHFFFAOYSA-N N,N'-diphenylthiourea Chemical compound C=1C=CC=CC=1NC(=S)NC1=CC=CC=C1 FCSHMCFRCYZTRQ-UHFFFAOYSA-N 0.000 description 2
- PYMYPHUHKUWMLA-LMVFSUKVSA-N aldehydo-D-ribose Chemical compound OC[C@@H](O)[C@@H](O)[C@@H](O)C=O PYMYPHUHKUWMLA-LMVFSUKVSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000004200 deflagration Methods 0.000 description 2
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical class OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 239000004323 potassium nitrate Substances 0.000 description 2
- 229910001487 potassium perchlorate Inorganic materials 0.000 description 2
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- 229920013667 Cellidor Polymers 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 231100000605 Toxicity Class Toxicity 0.000 description 1
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 description 1
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Inorganic materials [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 description 1
- SXDBWCPKPHAZSM-UHFFFAOYSA-N bromic acid Chemical compound OBr(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-N 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical class [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- FNMYQWAUHXSWPY-UHFFFAOYSA-N calcium;2h-tetrazol-5-amine Chemical compound [Ca].NC=1N=NNN=1.NC=1N=NNN=1 FNMYQWAUHXSWPY-UHFFFAOYSA-N 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- NDEMNVPZDAFUKN-UHFFFAOYSA-N guanidine;nitric acid Chemical compound NC(N)=N.O[N+]([O-])=O.O[N+]([O-])=O NDEMNVPZDAFUKN-UHFFFAOYSA-N 0.000 description 1
- 150000002357 guanidines Chemical class 0.000 description 1
- ZJYYHGLJYGJLLN-UHFFFAOYSA-N guanidinium thiocyanate Chemical compound SC#N.NC(N)=N ZJYYHGLJYGJLLN-UHFFFAOYSA-N 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 239000008241 heterogeneous mixture Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- TVIRJXQLFRFUCD-UHFFFAOYSA-N nitric acid;2h-tetrazol-5-amine Chemical compound O[N+]([O-])=O.NC1=NN=NN1 TVIRJXQLFRFUCD-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 125000005385 peroxodisulfate group Chemical group 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-M sulfamate Chemical compound NS([O-])(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-M 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 150000003567 thiocyanates Chemical class 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- WEAPVABOECTMGR-UHFFFAOYSA-N triethyl 2-acetyloxypropane-1,2,3-tricarboxylate Chemical compound CCOC(=O)CC(C(=O)OCC)(OC(C)=O)CC(=O)OCC WEAPVABOECTMGR-UHFFFAOYSA-N 0.000 description 1
- 239000001069 triethyl citrate Substances 0.000 description 1
- VMYFZRTXGLUXMZ-UHFFFAOYSA-N triethyl citrate Natural products CCOC(=O)C(O)(C(=O)OCC)C(=O)OCC VMYFZRTXGLUXMZ-UHFFFAOYSA-N 0.000 description 1
- 235000013769 triethyl citrate Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C9/00—Chemical contact igniters; Chemical lighters
Definitions
- the present invention relates to early powder for thermal fuses for deenergized lighting of the gas set of an airbag gas generator of motor vehicles
- the gas sets used in airbag gas generators of motor vehicles are generally very thermally stable.
- thermal fuses In order to ignite the gas set at a high ambient temperature, for example in the event of a vehicle fire, so-called thermal fuses are used.
- the thermal fuse ensures that the finished gas generator is in front and after installation, e.g. in a motor vehicle, it is not ignited at an uncontrolled high temperature and then there may be a leak or even fragmentation of the gas generator housing - especially in the case of an aluminum housing. According to this, the thermal fuse ensures that the gas-generating elements are converted Mixture thermally drawn far below this critical temperature is prevented in such a case by its early implementation and controlled ignition of the gas set, the destruction of the gas generator housing and avoids the associated dangers
- a possible embodiment for a thermal fuse includes a container which is filled with an early powder powder (pyrotechnic mixture), for example in granular form (0.1 to 0.5 g), which preferably ignites between 150 ° C. and 200 ° C. and releases so much heat that the ignition of the actual lighter and / or the gas set is guaranteed
- pyrotechnic airbag gas generators are usually ignited by a current pulse by means of a sensor.
- the ignition is amplified by an ignition charge which, with the hot gas and solid particles generated, burns the actual gas set - often in tablet form - almost synchronously.
- the burning gas set delivers the full gas of the protective cushion
- the self-ignition temperature of the time 2 used gas sets are found in the azide halogens at around 400 ° C and in the azide-free ones
- nitrocellulose powders have been used as early powder for thermal fuses. These have a self-ignition temperature (decomposition point) of 150-200 ° C.
- the nitrocellulose powders do not meet the stability requirements that have recently been required by the automotive industry Over 400 hours at 107 ° C (224 ° Fahrenheit, US Pat. No. 5,460,671, column 3) with a weight loss of ⁇ 3% and maintaining full functionality, nitrocellulose tends to slowly decompose even at low temperatures and therefore does not guarantee the functionality as early spring powder over a longer period of time, as is necessary in motor vehicles
- thermal fuses which should be able to ignite the gas-generating mixtures usually used in gas generators in a thermally controlled manner well below the critical temperature and which do not have the disadvantages of nitrocellulose as substances or as substance mixtures for these thermal Fuses can be used for compounds selected from the oxalate, peroxodisulfate (persulfate), permanganate, nitride, perborate, bismuthate, formate, nitrate, sulfamate, bromate or peroxide compound classes.
- oxidizable components for example explosives
- low Nerpuffungs- or decomposition points preferably calcium-bistetrazole-amine, 3-roitro-l, 2,4-triazol-5-one (NTO), 5-aminotetrazole nitrate, nitroguanidine (NIGU), guanidine nitrate or bistra-tazolamine are used
- NTO 2,4-triazol-5-one
- NIGU nitroguanidine
- guanidine nitrate or bistra-tazolamine are used.
- the substances, which have a lower deflagration point or decomposition point have as the gas-generating mixture used, but decompose endothermically, require at least one fuel and possibly a reducing agent in order to be able to be used as a thermal fuse.
- fuels are the oxidizable components mentioned above.
- Metal powder preferably titanium powder, can be used as reducing agent
- oxidizing agents such as potassium nitrate or potassium
- US Pat. No. 5,460,671 describes ignition powders which consist of a mixture of a fuel and an oxidizing agent.
- the oxidizing agents are selected from the group consisting of alkali metal or alkaline earth metal chlorates or mixtures thereof, in particular potassium or sodium chlorate.
- the fuels are carbohydrates, such as D- Glucose, D-galactose, D-ribose, etc
- the present invention has for its object to provide early powder, which do not have the disadvantages of nitrocellulose described above and which meet the aforementioned stability requirements (ie weight loss ⁇ 3% when stored warm at 107 ° C for 400 hours) and when the gas generator overheats (at Temperatures above 240 ° C) with a small amount (0.1 to 0.5 g) of early ignition powder (in the early ignition unit) can ignite the airbag gas set
- At least one fuel selected from the group consisting of thiourea and its derivatives, such as N, N '-Diphenylthioharnstoff and thiocyanates of guanidines such as guanidine thiocyanate,
- processing aids selected from calcium and magnesium stearates, graphite, high-boiling paraffins (such as Naftolen P603 from Chemetall) and citric acid esters and acylcitric acid esters (such as triethyl citrate and acetyl triethyl citrate), and optionally
- auxiliary fuels selected from elemental aluminum, zirconium, titanium, magnesium, zinc and iron, and optionally
- (F) fillers selected from the group consisting of AI2O3, TLO2, Zr ⁇ 2, F e 2 ⁇ 3 > Si 3 N 4 and Bornit ⁇ d (BN)
- the fuel (A) is present in the spring powders according to the invention for thermal fuses in an amount of 20 to 40 parts by weight, preferably 25-35 parts by weight and in particular 28-32 parts by weight.
- Potassium chlorate and potassium rutate, potassium chlorate and potassium perchlorate as well as mixtures of these three oxidizing agents are present in an amount of 40-80 parts by weight, preferably 50-75 parts by weight and in particular 60-75 parts by weight.
- stabilizers (C) is hydroxyethyl cellulose (Natrosol 250 HR) Fa Aqualon) and cellulose acetobutyrate are particularly preferred.
- amide derivatives such as dicyandiamide (cyanoguanidine) according to the invention are to be paid for the polyamides as stabilizers (C).
- the stabilizers are in a proportion of 0.5-20 parts by weight, preferably 0.5-10 parts by weight and in particular 0.5-5 parts by weight.
- the early spring powders according to the invention can optionally contain processing aids (D) in an amount of 0.5-5 parts by weight, preferably 0.5 to 3 parts by weight.
- processing aids (D) in an amount of 0.5-5 parts by weight, preferably 0.5 to 3 parts by weight.
- auxiliary fuels (E) can optionally in an amount of 0.5 -20 parts by weight, preferably 0.5-10 parts by weight and in particular 0.5-5 parts by weight steep incline
- fillers (F) may optionally be present in a proportion of 0.5-12 parts by weight, preferably 0.5-10 parts by weight and in particular 0.5-5 parts by weight
- the early spring powders according to the invention for thermal safeguards are not only limited to the airbag field, but can also be used for triggering mechanical movements as well as in pressure and security elements
- the toxicity of the raw materials used for the thermal safeguards according to the invention all correspond to Swiss toxicity classes 3, 4 and 5. Due to the reaction products of these mixtures, due to the previous raw material balance and the small amount used, there is no risk or danger to humans / vehicle occupants. The unused mixtures are easy to dispose of or recycle using conventional means.
- the thermal fuses according to the invention are well contracted with other gas-generating mixtures or pyrotechnic compounds, for example boron / calcium nitrate, and can be mixed in as granules or tablets or in a container preferably made of aluminum (or steel)
- the purity and grain size of these raw materials as well as the various mixtures of oxidizing agents and fuels used influence the temperature and type of decomposition
- the type of stabilizer and its proportion of the mixture has an effect on the long-term stability and the temperature of the drawing
- Thiohamstoff in the new combination with the above-mentioned oxidizing agent (B) and the suitable stabilizers (C) (protective colloids) are systems that react suddenly and strongly exothermic between 150-200 ° C, but on the other hand storage for 400 hours at 107 ° C with a weight loss ⁇ 3% with full function maintenance 0
- the dosing temperature of the chemical fuse can be shifted by adding nitrates and / or perchlorates (see Examples 3 and 5, Table I).
- auxiliary fuels such as metal powders of aluminum, zirconium, titanium, magnesium, zinc, iron, etc.
- the generation of hot particles can be positively influenced.Another way of producing hot particles - but at the expense of the total energy of the thermal fuse mixtures goes through
- the specified mixing ratios premixed in a vertical mixer and by means of water and / or solvents such as C1-C4 alcohols, for example methanol, ethanol, propanol and acetone (Example 10)
- a ready-to-use granulate or a tableting granulate can be used
- Example 7 10 parts by weight parts by weight, parts by weight ⁇
- Example 1 Comparative
- Examples 2 to 5 and 7 to 10 Comparative
- the composition according to Example 1 already showed a weight loss of 216 hours
- the compositions according to the invention meet the stability requirements and after 400 hours only showed a weight loss of between 1.3 and 2.3% and 2.4%, respectively.
- the ignition (or decomposition) temperatures of the early spring powders according to the invention are in the required range of 150-200 ° C. both before and after the thermal stress
- the ignition powders according to the invention according to Examples 2-5 and 7-10 showed a change in the decomposition temperature between 0 and 12 ° C after 400 hours at 107 ° C.
- Decomposition point was determined using differential scanning calorimetry (DSC method) 8 determined The bandwidth in the decomposition temperature determination was ⁇ 5 ° C. at the heating rate of 10 ° C./min
- Example 6 is carried out according to Examples 1-5, instead of thiourea, N, N'-diphenylthiourea is used
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Air Bags (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020007008625A KR20010040741A (ko) | 1998-02-13 | 1999-02-11 | 에어백 기체 발생기의 열 퓨즈를 위한 예비-점화 파우더 |
| EP99913070A EP1054849B1 (de) | 1998-02-13 | 1999-02-11 | Frühzündpulver für thermische sicherungen für airbag-gasgeneratoren |
| AU31366/99A AU3136699A (en) | 1998-02-13 | 1999-02-11 | Pre-ignition powders for thermal fuses of airbag gas generators |
| AT99913070T ATE216985T1 (de) | 1998-02-13 | 1999-02-11 | Frühzündpulver für thermische sicherungen für airbag-gasgeneratoren |
| JP2000531413A JP2002503624A (ja) | 1998-02-13 | 1999-02-11 | エアバッグガス発生器の温度安全装置のための早期点火火薬 |
| DE59901347T DE59901347D1 (de) | 1998-02-13 | 1999-02-11 | Frühzündpulver für thermische sicherungen für airbag-gasgeneratoren |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19805976A DE19805976C1 (de) | 1998-02-13 | 1998-02-13 | Frühzündpulver für thermische Sicherungen für Airbag-Gasgeneratoren |
| DE19805976.0 | 1998-02-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999041213A1 true WO1999041213A1 (de) | 1999-08-19 |
Family
ID=7857656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1999/000414 WO1999041213A1 (de) | 1998-02-13 | 1999-02-11 | Frühzündpulver für thermische sicherungen für airbag-gasgeneratoren |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1054849B1 (cs) |
| JP (1) | JP2002503624A (cs) |
| KR (1) | KR20010040741A (cs) |
| AT (1) | ATE216985T1 (cs) |
| AU (1) | AU3136699A (cs) |
| CZ (1) | CZ292350B6 (cs) |
| DE (2) | DE19805976C1 (cs) |
| WO (1) | WO1999041213A1 (cs) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001090032A1 (de) * | 2000-05-26 | 2001-11-29 | Nigu Chemie Gmbh | Frühzündpulver für thermische sicherungen für airbag-gasgeneratoren |
| DE102015014428A1 (de) | 2014-11-10 | 2016-05-12 | Ruag Ammotec Gmbh | Thermische Frühzündmittel |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20010154U1 (de) * | 2000-06-07 | 2000-09-07 | TRW Airbag Systems GmbH & Co. KG, 84544 Aschau | Anzündmischung zur Verwendung in Gasgeneratoren |
| DE202004014775U1 (de) * | 2004-09-22 | 2005-02-10 | Trw Airbag Systems Gmbh | Gasgenerator |
| DE102004062168A1 (de) * | 2004-10-08 | 2006-04-13 | Petri-Dn Gmbh Inflator Systems | Stoffgemisch als thermisch initiierbare Anzündmischung |
| CN100455553C (zh) * | 2004-10-08 | 2009-01-28 | 彼得里-蒂恩充气系统两合公司 | 作为可热引发的引燃混合物的物质混合物 |
| DE102004057770B4 (de) * | 2004-11-30 | 2008-07-31 | Trw Airbag Systems Gmbh | Pyrotechnische Zusammensetzung zur Verwendung als Frühzündmittel |
| FR2883868B1 (fr) * | 2005-03-30 | 2007-08-03 | Davey Bickford Snc | Compositions auto-initiatrices, initiateurs electriques utilisant de telles compositions et generateurs de gaz comportant de tels initiateurs |
| GB0722384D0 (en) * | 2007-11-15 | 2007-12-27 | Green Benjamin J | Pyrotechnic target |
| DE102008025218B3 (de) * | 2008-05-27 | 2009-11-12 | Bayern-Chemie Gesellschaft Für Flugchemische Antriebe Mbh | Initiator |
| FR2945288B1 (fr) * | 2009-05-05 | 2011-07-22 | Snpe Materiaux Energetiques | Compose solide pyrotechnique, obtention par voie seche et utilisation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2063586A1 (de) * | 1969-12-26 | 1971-07-22 | Asahi Kasei Kogyo K.K., Osaka (Japan) | Gasbildende Masse |
| US3695948A (en) * | 1970-05-22 | 1972-10-03 | Dow Chemical Co | Cast explosive composition containing thiourea |
| US3929530A (en) * | 1966-11-21 | 1975-12-30 | Dow Chemical Co | Pyrotechnic disseminating formulation |
| EP0607450A1 (en) * | 1992-07-10 | 1994-07-27 | Nippon Kayaku Kabushiki Kaisha | Gas generating agent and gas generator for automotive airbag |
| DE19616627A1 (de) * | 1996-04-26 | 1997-11-06 | Dynamit Nobel Ag | Anzündmischungen |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995026945A1 (en) * | 1994-04-04 | 1995-10-12 | Automotive Systems Laboratory, Inc. | Gas generator autoignition with a chlorate composition |
| DE19505568A1 (de) * | 1995-02-18 | 1996-08-22 | Dynamit Nobel Ag | Gaserzeugende Mischungen |
| ATE270261T1 (de) * | 1996-07-20 | 2004-07-15 | Dynamit Nobel Ag | Thermische sicherung |
-
1998
- 1998-02-13 DE DE19805976A patent/DE19805976C1/de not_active Expired - Fee Related
-
1999
- 1999-02-11 KR KR1020007008625A patent/KR20010040741A/ko not_active Abandoned
- 1999-02-11 AT AT99913070T patent/ATE216985T1/de not_active IP Right Cessation
- 1999-02-11 WO PCT/DE1999/000414 patent/WO1999041213A1/de active IP Right Grant
- 1999-02-11 DE DE59901347T patent/DE59901347D1/de not_active Expired - Fee Related
- 1999-02-11 EP EP99913070A patent/EP1054849B1/de not_active Expired - Lifetime
- 1999-02-11 JP JP2000531413A patent/JP2002503624A/ja active Pending
- 1999-02-11 AU AU31366/99A patent/AU3136699A/en not_active Abandoned
- 1999-02-11 CZ CZ20002897A patent/CZ292350B6/cs not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3929530A (en) * | 1966-11-21 | 1975-12-30 | Dow Chemical Co | Pyrotechnic disseminating formulation |
| DE2063586A1 (de) * | 1969-12-26 | 1971-07-22 | Asahi Kasei Kogyo K.K., Osaka (Japan) | Gasbildende Masse |
| US3695948A (en) * | 1970-05-22 | 1972-10-03 | Dow Chemical Co | Cast explosive composition containing thiourea |
| EP0607450A1 (en) * | 1992-07-10 | 1994-07-27 | Nippon Kayaku Kabushiki Kaisha | Gas generating agent and gas generator for automotive airbag |
| DE19616627A1 (de) * | 1996-04-26 | 1997-11-06 | Dynamit Nobel Ag | Anzündmischungen |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001090032A1 (de) * | 2000-05-26 | 2001-11-29 | Nigu Chemie Gmbh | Frühzündpulver für thermische sicherungen für airbag-gasgeneratoren |
| DE102015014428A1 (de) | 2014-11-10 | 2016-05-12 | Ruag Ammotec Gmbh | Thermische Frühzündmittel |
| WO2016075159A1 (de) | 2014-11-10 | 2016-05-19 | Ruag Ammotec Gmbh | Thermisches frühzündmittel |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE216985T1 (de) | 2002-05-15 |
| CZ292350B6 (cs) | 2003-09-17 |
| EP1054849B1 (de) | 2002-05-02 |
| CZ20002897A3 (cs) | 2001-02-14 |
| EP1054849A1 (de) | 2000-11-29 |
| DE19805976C1 (de) | 1999-04-29 |
| KR20010040741A (ko) | 2001-05-15 |
| DE59901347D1 (de) | 2002-06-06 |
| AU3136699A (en) | 1999-08-30 |
| JP2002503624A (ja) | 2002-02-05 |
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