EP1663913B1 - Process for production of spark generating tube, and product thereof - Google Patents
Process for production of spark generating tube, and product thereof Download PDFInfo
- Publication number
- EP1663913B1 EP1663913B1 EP04761538A EP04761538A EP1663913B1 EP 1663913 B1 EP1663913 B1 EP 1663913B1 EP 04761538 A EP04761538 A EP 04761538A EP 04761538 A EP04761538 A EP 04761538A EP 1663913 B1 EP1663913 B1 EP 1663913B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- mixture
- pyrotechnic
- shock
- group
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 27
- 230000008569 process Effects 0.000 title claims description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 20
- 239000000203 mixture Substances 0.000 claims description 83
- 230000035939 shock Effects 0.000 claims description 80
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- 229920000642 polymer Polymers 0.000 claims description 22
- 229920003023 plastic Polymers 0.000 claims description 21
- 239000004033 plastic Substances 0.000 claims description 21
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 18
- 238000009472 formulation Methods 0.000 claims description 14
- 229910001487 potassium perchlorate Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 239000000454 talc Substances 0.000 claims description 11
- 229910052623 talc Inorganic materials 0.000 claims description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000011777 magnesium Substances 0.000 claims description 10
- 229910052749 magnesium Inorganic materials 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 7
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 6
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 claims description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 4
- 229940007424 antimony trisulfide Drugs 0.000 claims description 4
- NVWBARWTDVQPJD-UHFFFAOYSA-N antimony(3+);trisulfide Chemical compound [S-2].[S-2].[S-2].[Sb+3].[Sb+3] NVWBARWTDVQPJD-UHFFFAOYSA-N 0.000 claims description 4
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 claims description 4
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 claims description 4
- 235000010333 potassium nitrate Nutrition 0.000 claims description 4
- 239000004323 potassium nitrate Substances 0.000 claims description 4
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 claims description 4
- 229910001488 sodium perchlorate Inorganic materials 0.000 claims description 4
- 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
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 2
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 2
- 229960004643 cupric oxide Drugs 0.000 claims description 2
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 claims description 2
- 229940112669 cuprous oxide Drugs 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 2
- 239000005864 Sulphur Substances 0.000 claims 1
- 229940056319 ferrosoferric oxide Drugs 0.000 claims 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims 1
- 230000001737 promoting effect Effects 0.000 claims 1
- 239000002360 explosive Substances 0.000 description 31
- 239000000843 powder Substances 0.000 description 23
- 239000000047 product Substances 0.000 description 20
- 239000010410 layer Substances 0.000 description 16
- 239000000839 emulsion Substances 0.000 description 14
- 229920003182 Surlyn® Polymers 0.000 description 13
- 229920000092 linear low density polyethylene Polymers 0.000 description 13
- 239000004707 linear low-density polyethylene Substances 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- 230000000977 initiatory effect Effects 0.000 description 11
- 238000005422 blasting Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 239000000654 additive Substances 0.000 description 5
- 239000002283 diesel fuel Substances 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000008054 signal transmission Effects 0.000 description 5
- 231100000331 toxic Toxicity 0.000 description 5
- 230000002588 toxic effect Effects 0.000 description 5
- TZRXHJWUDPFEEY-UHFFFAOYSA-N Pentaerythritol Tetranitrate Chemical compound [O-][N+](=O)OCC(CO[N+]([O-])=O)(CO[N+]([O-])=O)CO[N+]([O-])=O TZRXHJWUDPFEEY-UHFFFAOYSA-N 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000011068 loading method Methods 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- LJCFOYOSGPHIOO-UHFFFAOYSA-N antimony pentoxide Inorganic materials O=[Sb](=O)O[Sb](=O)=O LJCFOYOSGPHIOO-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 238000004200 deflagration Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 231100000053 low toxicity Toxicity 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000006479 redox reaction Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000002318 adhesion promoter Substances 0.000 description 2
- 230000016571 aggressive behavior Effects 0.000 description 2
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 229960005191 ferric oxide Drugs 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 229920001477 hydrophilic polymer Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012263 liquid product Substances 0.000 description 2
- 239000010759 marine diesel oil Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 239000012265 solid product Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur 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
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000586 desensitisation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical class [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- YEAUATLBSVJFOY-UHFFFAOYSA-N tetraantimony hexaoxide Chemical compound O1[Sb](O2)O[Sb]3O[Sb]1O[Sb]2O3 YEAUATLBSVJFOY-UHFFFAOYSA-N 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C5/00—Fuses, e.g. fuse cords
- C06C5/04—Detonating fuses
Definitions
- the present Patent refers to a process for production of a thermal shock tube and product thereof, applied as signal transmission device for connecting and initiating explosive columns, or as a flame conductor, usually complemented by a delay element or used as a delay unit, which uses a pyrotechnic mixture with low sensitivity to ignition by shock or friction, with low toxicity, which generates a spark with superior thermal performance, said process having the possibility of continuous and separated dosing of the individual non-active components, in conjunction with the formation of the plastic tube, making the process safer, and with a more accurate dosing, and said product maintaining the advantages of the current pyrotechnic shock tube relative to the shock wave propagating tube: larger transmission sensibility and sensitivity, propagation even with cuts or holes in the tubes and low risk transport classification, and presents additional advantages: use of low toxicity components, use of ordinary, low cost, low adhesiveness polymers, generation of a spark that propagates through knots, closed kinks or tube obstructions, and resistance to failure by attack of components of hot explosive emulsions.
- non-electric detonators or “shock tubes” are broadly applied for connecting and initiating explosive charges in the mining and quarry sector.
- Such devices marketed with brands like NONEL, EXEL, BRINEL, etc., came to substitute electric blasting caps ignited by metallic wiring, and represented a revolution in the market of detonation accessories, due to its easiness of connection and application, and to the intrinsic safety against accidental ignition by induction of spurious electric current.
- Hot Diesel fuel is particularly aggressive to LLDPE, and prolonged contact of the tube with hot, Diesel fuel-based emulsions causes failure in signal propagation.
- PVA protective skin is fragile and does not adhere to the LLDPE, and so a pretreatment with a cleaner (like chromic acid), with hot air or with an adhesion promoter (like Vinamul EVA copolymer) is necessary.
- pyrotechnic shock tube A further development in the low energy transmission fuses was the invention of tubes that make use of pyrotechnic mixtures inside the tube, in substitution for high-explosive-containing powders.
- pyrotechnic shock tube Some of the processes and products with pyrotechnic mixtures, hereinafter referred as “pyrotechnic shock tube”, are the following:
- Signal transmission tubes are usually complemented with the insertion of a delay blasting cap in its tip, such cap made of a metal cap containing two layers of explosive powder pressed inside, the bottom layer being a secondary high explosive, and the upper layer being a primary, flame-sensitive explosive, complemented by a delay element consisting of a metallic cylinder containing in its interior a compacted column of powdery pyrotechnic delay mixture and, frequently, an additional column of pyrotechnic mixture sensitive to the heat generated by the tube's shock wave.
- a delay blasting cap in its tip, such cap made of a metal cap containing two layers of explosive powder pressed inside, the bottom layer being a secondary high explosive, and the upper layer being a primary, flame-sensitive explosive, complemented by a delay element consisting of a metallic cylinder containing in its interior a compacted column of powdery pyrotechnic delay mixture and, frequently, an additional column of pyrotechnic mixture sensitive to the heat generated by the tube's shock wave.
- Pyrotechnic shock tube as foreseen in the Brazilian patent PI 8104552 , from the applicant of the present patent, has the following disadvantages:
- mixtures of powdered aluminum, whose temperature of Tammann is 193°C and ferrous-ferric oxide, Fe 3 O 4 , whose temperature of Tammann is 632°C are particularly difficult to start and propagate, while mixtures of powdered aluminum and potassium chlorate, whose temperature of Tammann is only 47,5°C, is especially dangerous.
- One of the invention bases is to obtain enough activation energy to warranty the initiation and propagation of the pyrotechnic reaction even with the contamination of the interior of the tube by hydrocarbon fuel coming from explosive emulsion, such contamination decreasing the enthalpy pyrotechnic reaction.
- potassium perchlorate potassium chlorate, antimony trisulfide, sulfur, potassium nitrate, ammonium perchlorate, sodium chlorate, or any substance whose temperature of Tammann is adapted to this purpose.
- the invention is also based, without being limited to this, in the observation that a pyrotechnic reaction that generates products with high thermal conductivity and thermal convection coefficient, will allow a better propagation continuity, and will ignite delay elements with greater thermal efficiency, allowing the use of smaller, slower delay columns without additional ignition elements.
- this gas volume cannot be excessive, otherwise there will be the dispersal of the solid and liquid products of the spark in the tip of the tube, combined with the gaseous expansion, what will provoke the loss of the thermal energy necessary for ignition of the delay element.
- appropriate components for gas generation are antimony trisulfide, potassium perchlorate, potassium nitrate, sodium nitrate, ammonium perchlorate, sodium perchlorate, etc.
- Another knowledge taken into account as base for the invention is that certain products present lubricating properties and superficial adherence properties, what reduces the sensibility to the friction and mechanical shock of the mixture, and provides adhesiveness even to difficult polymers like pure LLDPE. Examples of such products are: talc (magnesium and aluminum hydrosilicate) and graphite.
- Another objective of the invention is to obtain an unpublished process in that the mixture of the oxidizers and additive is done in separate from the fuels or reduction agents, and that the final active mixture is obtained in the own plastic extruder, in an automated, continuous or semi-batch process, so that just a very small amount of pyrotechnic mixture is formed at any instant, minimizing the risks and effects of an accidental ignition of the tube during the industrial production.
- Another aspect taken as base for the invention is that, to propagate through eventual cuts or holes accidentally done in the tube during field application, the spark should be constituted so much by products of high heat transfer, as by gaseous products, in a way to happen both the heat transfer to allow the continuity of the pyrotechnic signal transmission as to allow the mechanical impulse for releasing of the spark for the open portion of the tube.
- the components of the pyrotechnic mixture formulation can have combined characteristics, in other words, the same substance component can have more than a function as mentioned above at the same time.
- the characteristics of the components of the formulation can be applied to conventional shock tubes, individually or combined, with the aim of optimizing them to obtain a better performance, a higher safety in production and a decrease in the environmental and occupational health risks.
- Additional steps of processing could include tube cooling, stretching of the tube to obtain tensile strength, thermal treatment of the tube, and other techniques conventional in the plastic processing area, without loss for the invention teachings.
- the final product, thermal shock tube uses conventional plastic tube, such as EVA, POLYETHYLENE, LLDPE or SURLYN, with outer diameter ranging from 2.0 to 6.0 mm and inner diameter ranging from 1.0 to 5.0 mm and containing 5 to 40 mg/m of pyrotechnic mixture adhered to its internal walls; TABLE 1 - Practical Tests Results Formulation Speed of propagation Minimum gap between kinks in kink propagation test Tight knot propagation Low energy detonating cord initiation Shock Sensibility Slower Delay Sensibility all-fire air gap Initiation after exposure to the hot explosive emulsion Adherence of the mixture to the tube (% of free powder) Al 65% * Fe 3 O 4 17% KClO 4 17% Talc 1.0% 750 m / s Failure at any distance 3 f-kg 8% 9.2 N 8 cm 80 mm 25% 5% Al 50 % Fe 3 O 4 24.5% KClO 4 29.5% Talc 1.0% 1170 m / s 1
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Air Bags (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Pipe Accessories (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0303546-8A BR0303546B8 (pt) | 2003-09-19 | 2003-09-19 | tubo de choque tÉrmico. |
| PCT/BR2004/000178 WO2005028401A1 (en) | 2003-09-19 | 2004-09-20 | Process for production of thermal shock tube, and product thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1663913A1 EP1663913A1 (en) | 2006-06-07 |
| EP1663913B1 true EP1663913B1 (en) | 2008-09-03 |
Family
ID=34318711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04761538A Expired - Lifetime EP1663913B1 (en) | 2003-09-19 | 2004-09-20 | Process for production of spark generating tube, and product thereof |
Country Status (26)
| Country | Link |
|---|---|
| US (1) | US20050109230A1 (sr) |
| EP (1) | EP1663913B1 (sr) |
| JP (1) | JP2007505807A (sr) |
| KR (1) | KR100848214B1 (sr) |
| CN (1) | CN100506758C (sr) |
| AP (1) | AP1838A (sr) |
| AR (1) | AR045772A1 (sr) |
| AT (1) | ATE407105T1 (sr) |
| AU (1) | AU2004274048B2 (sr) |
| BR (1) | BR0303546B8 (sr) |
| CA (1) | CA2538734A1 (sr) |
| CO (1) | CO5630033A1 (sr) |
| DE (1) | DE602004016355D1 (sr) |
| EA (1) | EA009360B1 (sr) |
| EC (1) | ECSP045304A (sr) |
| ES (1) | ES2313045T3 (sr) |
| MX (1) | MXPA06001056A (sr) |
| NO (1) | NO20061632L (sr) |
| NZ (1) | NZ580211A (sr) |
| PA (1) | PA8612701A1 (sr) |
| PE (1) | PE20050272A1 (sr) |
| PT (1) | PT1663913E (sr) |
| RS (1) | RS20060181A (sr) |
| UA (1) | UA83253C2 (sr) |
| WO (1) | WO2005028401A1 (sr) |
| ZA (1) | ZA200601486B (sr) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006008706A2 (en) * | 2004-07-14 | 2006-01-26 | University Of Pretoria | An alternate oxidant for a delay composition |
| CN100348554C (zh) * | 2006-03-31 | 2007-11-14 | 谢新佑 | 一种用于烟花爆竹的复合氧化剂 |
| CZ306750B6 (cs) * | 2006-10-27 | 2017-06-14 | Austin Detonator S.R.O. | Detonační trubice průmyslové neelektrické rozbušky pro zlepšení separovatelnosti od zpracovávané rubaniny |
| BR102014024720A2 (pt) * | 2014-10-03 | 2016-05-24 | Pari Sa | tubo condutor de fagulha térmica com uso de partículas nanométricas |
| CN104439756B (zh) * | 2014-12-29 | 2016-03-30 | 湖南天佑科技有限公司 | 一种无源自滋生高热自动焊接碳钢类金属的膏体及其制备方法与使用方法 |
| US12000681B2 (en) | 2015-09-17 | 2024-06-04 | I P Creations Limited | Biodegradable reactive shooting target and method of manufacture |
| US11592269B2 (en) | 2015-09-17 | 2023-02-28 | I P Creations Limited | Flash directed reactive target and method of manufacture |
| US10288390B2 (en) * | 2015-09-17 | 2019-05-14 | I P Creations Limited | Concealed amalgamated explosive neutralizer and method of manufacture |
| FR3076830B1 (fr) * | 2018-01-17 | 2022-01-28 | Nexter Munitions | Composition retard pyrotechnique |
| BR112020010200B1 (pt) * | 2018-02-21 | 2022-05-03 | Enaex S.A. | Cápsula detonante de mistura metálica |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3745077A (en) * | 1972-03-15 | 1973-07-10 | Lockheed Aircraft Corp | Thermit composition and method of making |
| JPS57140394A (en) * | 1981-02-20 | 1982-08-30 | Nissan Motor | Time delay line |
| US4923535A (en) * | 1982-03-17 | 1990-05-08 | General Technology Applications, Inc. | Polymer binding of particulate materials |
| US4522665A (en) * | 1984-03-08 | 1985-06-11 | Geo Vann, Inc. | Primer mix, percussion primer and method for initiating combustion |
| US4757764A (en) * | 1985-12-20 | 1988-07-19 | The Ensign-Bickford Company | Nonelectric blasting initiation signal control system, method and transmission device therefor |
| GB2242010B (en) | 1990-03-15 | 1993-10-13 | Ici Plc | Low energy fuse |
| GB9017715D0 (en) * | 1990-08-13 | 1990-09-26 | Ici Plc | Low energy fuse |
| US5212341A (en) * | 1991-08-15 | 1993-05-18 | Osborne Alfred M | Co-extruded shock tube |
| GB9119217D0 (en) * | 1991-09-09 | 1991-10-23 | Ici Plc | Low energy fuse |
| JPH09328387A (ja) * | 1996-06-03 | 1997-12-22 | Daicel Chem Ind Ltd | ガス発生剤組成物 |
| US5827994A (en) | 1996-07-11 | 1998-10-27 | The Ensign-Bickford Company | Fissile shock tube and method of making the same |
| US5866842A (en) * | 1996-07-18 | 1999-02-02 | Primex Technologies, Inc. | Low temperature autoigniting propellant composition |
-
2003
- 2003-09-19 BR BRPI0303546-8A patent/BR0303546B8/pt active IP Right Grant
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2004
- 2004-09-17 US US10/944,921 patent/US20050109230A1/en not_active Abandoned
- 2004-09-17 PE PE2004000907A patent/PE20050272A1/es not_active Application Discontinuation
- 2004-09-17 PA PA20048612701A patent/PA8612701A1/es unknown
- 2004-09-17 CO CO04092665A patent/CO5630033A1/es active IP Right Grant
- 2004-09-20 UA UAA200604368A patent/UA83253C2/ru unknown
- 2004-09-20 CN CNB2004800270698A patent/CN100506758C/zh not_active Expired - Fee Related
- 2004-09-20 EC EC2004005304A patent/ECSP045304A/es unknown
- 2004-09-20 PT PT04761538T patent/PT1663913E/pt unknown
- 2004-09-20 AR ARP040103371A patent/AR045772A1/es unknown
- 2004-09-20 RS YUP-2006/0181A patent/RS20060181A/sr unknown
- 2004-09-20 AP AP2006003526A patent/AP1838A/xx active
- 2004-09-20 EA EA200600583A patent/EA009360B1/ru not_active IP Right Cessation
- 2004-09-20 WO PCT/BR2004/000178 patent/WO2005028401A1/en not_active Ceased
- 2004-09-20 CA CA002538734A patent/CA2538734A1/en not_active Abandoned
- 2004-09-20 JP JP2006526488A patent/JP2007505807A/ja not_active Ceased
- 2004-09-20 NZ NZ580211A patent/NZ580211A/en not_active IP Right Cessation
- 2004-09-20 AT AT04761538T patent/ATE407105T1/de not_active IP Right Cessation
- 2004-09-20 ES ES04761538T patent/ES2313045T3/es not_active Expired - Lifetime
- 2004-09-20 EP EP04761538A patent/EP1663913B1/en not_active Expired - Lifetime
- 2004-09-20 MX MXPA06001056A patent/MXPA06001056A/es active IP Right Grant
- 2004-09-20 KR KR1020067004332A patent/KR100848214B1/ko not_active Expired - Fee Related
- 2004-09-20 DE DE602004016355T patent/DE602004016355D1/de not_active Expired - Lifetime
- 2004-09-20 AU AU2004274048A patent/AU2004274048B2/en not_active Ceased
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2006
- 2006-02-20 ZA ZA200601486A patent/ZA200601486B/en unknown
- 2006-04-10 NO NO20061632A patent/NO20061632L/no not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| PT1663913E (pt) | 2008-12-16 |
| ZA200601486B (en) | 2007-05-30 |
| JP2007505807A (ja) | 2007-03-15 |
| ES2313045T3 (es) | 2009-03-01 |
| EA200600583A1 (ru) | 2006-08-25 |
| KR20060035800A (ko) | 2006-04-26 |
| AR045772A1 (es) | 2005-11-09 |
| CA2538734A1 (en) | 2005-03-31 |
| CN100506758C (zh) | 2009-07-01 |
| AU2004274048A1 (en) | 2005-03-31 |
| EP1663913A1 (en) | 2006-06-07 |
| NO20061632L (no) | 2006-06-16 |
| BR0303546B8 (pt) | 2013-02-19 |
| AP2006003526A0 (en) | 2006-02-28 |
| ATE407105T1 (de) | 2008-09-15 |
| ECSP045304A (es) | 2004-11-26 |
| UA83253C2 (ru) | 2008-06-25 |
| BR0303546A (pt) | 2005-05-10 |
| AP1838A (en) | 2008-04-07 |
| CN1852875A (zh) | 2006-10-25 |
| AU2004274048B2 (en) | 2008-10-23 |
| PE20050272A1 (es) | 2005-04-28 |
| CO5630033A1 (es) | 2006-04-28 |
| EA009360B1 (ru) | 2007-12-28 |
| KR100848214B1 (ko) | 2008-07-24 |
| PA8612701A1 (es) | 2005-03-28 |
| RS20060181A (sr) | 2007-12-31 |
| BR0303546B1 (pt) | 2013-01-08 |
| DE602004016355D1 (de) | 2008-10-16 |
| MXPA06001056A (es) | 2006-03-17 |
| WO2005028401A1 (en) | 2005-03-31 |
| US20050109230A1 (en) | 2005-05-26 |
| NZ580211A (en) | 2010-12-24 |
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