32 results about "Pyrotechnic composition" patented technology

The utility model provides a novel wireless smoke pot device. The novel wireless smoke pot device comprises a wireless smoke pot and a radio induction driving circuit, the wireless smoke pot is connected with the radio induction driving circuit; the wireless fuming pot comprises a first wireless induction coil, an electronic ignition head and a fuming pyrotechnic composition; the wireless induction coil is connected with the electronic ignition head; the electronic ignition head is connected with the ignition pyrotechnic composition; the radio induction driving circuit comprises a second wireless induction coil and a control circuit; and the control circuit is connected with the second wireless induction coil and is used for receiving a control instruction sent by the MCU. The wireless smoke pot does not need extra power supply, and is simple in periphery, simple in process, easy to implement and small in size. A wireless charging chip scheme is adopted in the wireless induction driving circuit, wireless induction cigarette lighting can be achieved only through few peripheral devices, the size of a finished product is further compressed, and the production process and the cost are further optimized.

The invention relates to the technical field of combustion agents and preparation processes thereof, in particular to a high-reaction-pressure silicon-based pyrotechnic composition and a preparation process thereof.The high-reaction-pressure silicon-based pyrotechnic composition is prepared from metal powder, metal fluoride, a gas generating agent and a binder; porous silicon powder is adopted as the metal powder, one or more of ferric fluoride and copper fluoride is adopted as the metal fluoride, ammonium perchlorate is adopted as the gas generating agent, and one or more of epoxy resin and polyether amine is adopted as the binder. When the high-reaction-pressure silicon-based pyrotechnic composition is prepared, silicon is used for replacing aluminum to serve as combustible metal, fluoride is used for replacing oxide, the boiling point of a reaction product is remarkably reduced and is far lower than that of aluminum oxide, and due to the fact that the boiling point of the reaction product is reduced, slag of the product is remarkably reduced.

The invention belongs to the technical field of chemical engineering, and relates to a composition for a detonation sound agent, the detonation sound agent and a preparation method and application of the detonation sound agent. The technical problems that in the prior art, pyrotechnic composition and aluminum magnesium alloy powder serve as raw materials, potential safety hazards exist in the preparation and storage process, sulfur dioxide generated after combustion easily forms acid rain, and the detonation sound value does not reach the standard are solved. The invention provides a composition for a detonation sound agent, which comprises the following raw materials: 75-85 wt% of lead tetraoxide, 10-15 wt% of aluminum-silicon alloy powder and 5-10 wt% of nitrocellulose gum solution, and has the effects of high detonation sound value, high stability and safety, and suitability for large-scale industrial production and use. The invention further provides a detonation sound agent and a preparation method of the detonation sound agent. Meanwhile, the invention further provides application of the detonation sound agent in preparation of the bird repelling bomb, when the explosive quantity is 300 mg, the set-off sound level value at the position 2 m away from the acting position can reach 120 dB or above, and the good high-altitude bird repelling effect is achieved.

The utility model relates to the field of firework processing, in particular to a firework inner cylinder pyrotechnic composition filling device. The technical problem that when an existing pyrotechnic composition filling device is used for filling pyrotechnic compositions, distribution of the pyrotechnic compositions in a firework cylinder is not uniform enough, filling of the pyrotechnic compositions is not sufficient enough, and therefore the filling quality of the pyrotechnic compositions is reduced is solved. A firework inner cylinder pyrotechnic composition filling device comprises a base, a sliding rail is fixedly connected to the base, a motor is fixedly connected to one side of the base, a double-thread screw rod is fixedly connected to one end of an output shaft of the motor, and a charging hopper is connected to one side of the double-thread screw rod through threads. The motor drives the double-end threaded screw rod to rotate, the double-end threaded screw rod rotates to enable the charging hopper and the pressing plate to move in the direction away from each other, the extrusion plate moves to push pyrotechnic composition in the charging hopper into the firework barrel, then the pyrotechnic composition in the firework barrel is more compact, and therefore the filling effect of the pyrotechnic composition is improved.

A method for making a pyrotechnic composition in accordance with an embodiment of the present technology includes flowing metal powder, polytetrafluoroethylene powder, and binder powder in separate respective feed streams toward an extruder. The binder powder includes adhesive material and polytetrafluoroethylene anticaking material coating the adhesive material. The method further includes interspersing the metal powder, the binder powder, and the fluoropolymer powder to form a mixture. This mixture is then subjected to an extrusion process during which the anticaking material coating the adhesive material is disrupted. This releases the adhesive material to bind together the metal powder and the polytetrafluoroethylene powder in the extrudate. The powder mixture includes no solvent at any time between being formed and being extruded, yet the extrudate is well-mixed and cohesive.

The invention provides a pyrotechnic composition as well as a preparation method and application thereof, and the pyrotechnic composition comprises 20-50% of fuel, 40-70% of oxidant and 3-10% of energetic additive based on the total weight of the pyrotechnic composition being 100%, wherein the energetic additive is nano manganese difluoride and is granular, and the average diameter of the energetic additive is smaller than 300 nm. The pyrotechnic composition provided by the invention has the advantages of high reaction rate, high energy output, high gas yield and the like.

A hybrid airbag inflator includes a pyrotechnic booster gas generant disposed in a booster combustion chamber and a pyrotechnic main gas generant disposed in a main combustion chamber. The hybrid airbag inflator also includes an initiator and a pressurized gas. The pyrotechnic booster gas generant and the pyrotechnic main gas generant are the same pyrotechnic composition but take different physical forms. The initiator deploys into the booster combustion chamber to ignite the pyrotechnic booster gas generant which in turn ignites the pyrotechnic main gas generant. The pressurized gas is in fluid communication with both the booster combustion chamber and the main combustion chamber prior to deploying the initiator, such that the pyrotechnic booster gas generant in the booster combustion chamber is under pressure before the initiator deploys.

The utility model provides a static pyrotechnic composition dehumidifying and drying system. The static pyrotechnic composition dehumidifying and drying system comprises a drying room body, a plurality of auxiliary heating walls, a cart, an auxiliary heating system and an air energy low-temperature heat circulation system. Wherein the multiple auxiliary heating walls are arranged side by side in the depth direction from the door to the inner bottom wall, a drying channel is formed between every two adjacent auxiliary heating walls, the multiple carts are sequentially placed in each drying channel, and every two adjacent carts are connected through a metal chain; the trolleys which are connected into a whole are connected to a grounding plug through a conductive chain arranged on any trolley, and the grounding plug is directly grounded. Dustproof cloth is further arranged on the top of the drying room, so that backflow gas in the drying room enters the gas return opening after being filtered by the dustproof cloth. A plurality of auxiliary heating wall structures divide the drying room into a plurality of subareas, each subarea is distributed to an auxiliary heating system, circulation and heating are achieved in six directions, and drying is more uniform; dust does not enter the circulation channel through the dustproof cloth, and safety is improved.

The application relates to the technical field of powder tabletting, and discloses an automatic filling and tabletting device for fireworks and a method thereof, which comprises an operation table, a tabletting assembly is arranged on the operation table, the tabletting assembly comprises a middle shaft, a sleeve is rotationally connected to the outer wall of the middle shaft, a pressure disc and a hole disc are fixedly connected to the outer wall of the sleeve, and a plurality of tabletting holes are formed in the hole disc; a feeding assembly is arranged on the operation table and used for filling the fireworks into the tabletting holes; an isolating assembly is arranged on the feeding assembly and used for spraying an isolating agent in the tabletting holes. Through cooperation of the tabletting assembly and the feeding assembly, the fireworks in a material box are continuously filled into the plurality of tabletting holes in the process that the pressure disc and the hole disc continuously rotate, the technical effect of continuous automatic feeding is achieved, meanwhile, the plurality of pressure shafts can be sequentially lowered for tabletting treatment, and the technical effect of automatic continuous tabletting is achieved.

The invention discloses a color smoke generating agent containing a nanometer material, and belongs to the technical field of pyrotechnic compositions, and the color smoke generating agent comprises the following components by weight: 25-40% of an oxidizing agent; 20%-30% of a reducing agent; 25%-40% of an organic dye; 2%-10% of a nanoscale functional additive; the nanoscale functional additive can be selected from one or a mixture of any two or more of nanoscale silicon dioxide (SiO2), nanoscale aluminum oxide (Al2O3) and nanoscale perlite powder. The invention is used for solving the problems of low smoke generation speed, small smoke column diameter and unsaturated smoke color of the existing colored smoke generation agent.

The invention relates to the technical field of pyrotechnic composition production, in particular to a pyrotechnic composition shearing type granulator which comprises a supporting frame, a mounting plate is arranged on the supporting frame, a first material guide cover and two second material guide covers are arranged on the mounting plate, a smashing assembly is arranged in the first material guide cover and comprises a material guide plate and a rotary cutter, and the rotary cutter is arranged in the first material guide cover. A granulation assembly is arranged in each second material guide cover, each granulation assembly comprises a rotary granulation mechanism, a water cooling mechanism and a jarring mechanism, the water cooling mechanism comprises a water inlet pipe fitting and a water outlet pipe fitting, and the water inlet pipe fitting and the water outlet pipe fitting are the same in structure and each comprise a fixed water bin, a rotary water bin and a plurality of water passing pipes. The water cooling mechanism can continuously inject flowing cooling water into each hollow pressing roller in the rotating process of the rotating frame, so that the hollow pressing rollers are cooled through the flowing cooling water, the temperature of the hollow pressing rollers is reduced, and spontaneous combustion or explosion of gunpowder caused by high temperature generated by friction between the hollow pressing rollers and the gunpowder is prevented.

The invention relates to the fields of chemical industry, pyrotechnic compositions, fireworks and crackers and the like, and relates to preparation of barium fumarate serving as a novel compound material with coloring agent and reducing agent effects, and preparation and application of the material in the fields of pyrotechnic compositions, fireworks and crackers and the like. The preparation method comprises the following steps: mixing fumaric acid and barium carbonate or barium oxide or barium hydroxide, and heating an aqueous solution to prepare barium fumarate; furthermore, the barium fumarate can be fully mixed with selected other substances to prepare a green pyrotechnic composition, and the green pyrotechnic composition is applied to fireworks and crackers and other fields; in addition, the barium fumarate is mixed with other selected substances, a small amount of perchlorate can be selectively added and fully mixed to prepare non-pyrotechnic composition or pyrotechnic composition substances in various geometrical shapes, and then the substances are placed in handheld, ground and air (including aircrafts) devices or equipment to be used for preparing the non-pyrotechnic composition or pyrotechnic composition. The non-pyrotechnic composition and the pyrotechnic composition substance can be ignited according to the electronic heating principle, and green light is emitted through combustion for color development.

The invention belongs to the field of production and manufacturing of energetic materials for fireworks and crackers, and particularly relates to a preparation method of a nitrocotton-based pyrotechnic composition for fireworks and crackers. The preparation method comprises the following steps: sequentially adding water, nitrocotton, a stabilizing agent and ethyl acetate into a reaction kettle provided with a heating and stirring device, then adding protective glue, continuously stirring, adding a sodium sulfate solution into the reaction kettle, dehydrating, adding microcrystalline wax / paraffin into the reaction kettle after the particle morphology is stable, and continuously stirring; melting microcrystalline wax / paraffin under the stirring action, and uniformly coating the surfaces of the nitrocotton particles with the microcrystalline wax / paraffin to form a layer of hydrophobic protective film, so as to obtain a semi-finished product; washing with warm water to remove residual sodium sulfate, protective glue and a small amount of ethyl acetate; and drying the washed product at the temperature of lower than 50 DEG C to obtain a final gunpowder particle product. According to the method, the spherical and dense nitrocotton-based pyrotechnic composition particles with good surface coating can be prepared, and the free-running property, the combustion consistency and the moisture absorption resistance of the product are effectively improved.

The utility model discloses a firework inner cylinder pyrotechnic composition positioning mechanism with an annular effect, a central cartridge case for accommodating an explosive is arranged at the central axis position of an inner cavity of a firework inner cylinder, a fire passing channel is arranged on the side wall of the central cartridge case, and a plurality of partition plates are distributed on the outer side wall of the central cartridge case; the partition plates divide the area between the center cartridge case and the inner side barrel wall of the inner barrel into a plurality of filling units for loading effect pieces, and the filling units are evenly distributed around the periphery of the center cartridge case. The air annular effect formed by multiple effect pieces can be achieved, work is reliable, and assembling is convenient.

The utility model discloses a firework product capable of generating a subtitle firework effect, which comprises a flexible or rigid base material, the base material is provided with a plane structure used for fixing or storing pyrotechnic composition powder, and the pyrotechnic composition powder is attached to the plane structure of the base material according to set patterns or characters; the firework further comprises a fire transferring piece, the fire transferring piece is selected from a combustible base material or a firework lead, and the firework lead is distributed along the pyrotechnic composition powder attached to the base material. The pyrotechnic composition powder is one of firework powder; or one of titanium, iron, zirconium, aluminum, magnesium metal or metal oxide powder; or a mixture of more than two of the various powders. A firework visual effect with a preset subtitle pattern can be generated; the device has the advantages of simplicity in preparation, small size and convenience in use.

The invention relates to a pyrotechnic solid substance for generating gas, a pyrotechnic composition and a gas generator, comprising an effective composition, the effective composition comprising, by weight, 40%-50% of guanidine nitrate, 6%-48% of basic copper nitrate, 1%-5% of alumina and 5%-15% of at least one coolant prepared from hydrated oxalate, and the pyrotechnic solid substance does not contain a binder component. The pyrotechnic solid substance has the beneficial effects that the pyrotechnic solid substance capable of generating gas, which is composed of the effective compositions, has the characteristics of high gas production rate, high combustion rate, low combustion temperature, low pressure index, small toxicity of released gas and the like, and is particularly suitable for an in-vehicle safety airbag as a passenger protection system.

The utility model discloses a water heat storage type hot air device of a pyrotechnic composition drying room, which relates to the technical field of pyrotechnic composition processing, and comprises an air cabinet, an air supply component is arranged in the air cabinet, a fin heat exchanger is arranged in the air cabinet, and a heat storage component connected with the fin heat exchanger is arranged on the outer side of the air cabinet. The heat pump and the condenser are far away from the drying box, and the supporting frame is arranged, so that neither the long-shaft fan nor the moisture exhaust fan makes direct contact with hot air, the influence of working medium leakage and static electricity leakage on the drying box is effectively eliminated, the heat pump and the condenser are made to be far away from the drying box, and the heat pump and the condenser are made to be far away from the drying box. The safety of the device is improved, a sealed communication relation is formed between the air cabinet and the drying box, and the hot water tank is arranged, so that the hot water tank plays a role in energy storage, when the environment temperature changes, stable heat supply can be provided for the drying room, the influence of the environment temperature on drying operation is reduced, and the drying efficiency is improved.

The utility model discloses a pyrotechnic composition bead manufacturing machine, and belongs to the field of pyrotechnic composition bead manufacturing, the pyrotechnic composition bead manufacturing machine comprises a base, a composition bead tank is rotatably connected above the base, a filtering inner container is arranged above the composition bead tank, a vibration assembly is arranged above the filtering inner container, the vibration assembly comprises a limiting rod, the limiting rod is fixedly connected with the upper part of the base, and the limiting rod is fixedly connected with the lower part of the base. A connecting plate is slidably connected to the outer surface of the limiting rod, a connecting rod is fixedly connected to the lower portion of the connecting plate, a membrane rib gun is fixedly installed at the lower end of the connecting rod, a second rack is fixedly connected to the lower portion of the connecting plate, the vibration assembly further comprises an electric push rod, and a first rack is arranged on the right side of the electric push rod. According to the device, the filtering inner container in the medicine bead tank is vibrated through descending of the vibration assembly, gunpowder in the filtering inner container is removed through vibration of the vibration assembly, and the more efficient and stable vibration effect is achieved.

The invention relates to a friction type safe and environment-friendly pyrotechnic composition and application thereof, and belongs to the technical field of fireworks and crackers. The safe and environment-friendly friction type pyrotechnic composition is formed by mixing the high-nitrogen energetic complex which does not contain precious metal, toxic heavy metal and highly toxic azide, sand, metal powder and a binder, and the pyrotechnic composition is safe and easy to prepare, low in cost, free of pollution and suitable for industrial production. The finished product is high in ignition rate, good in sound and light effect, stable in property, long in quality guarantee period and suitable for fireworks and crackers. According to the preparation method and application of the friction-type safe and environment-friendly pyrotechnic composition, the friction-type safe and environment-friendly pyrotechnic composition is low in manufacturing cost, safe in production process, simple in process, good in stability, capable of being stored for a long time without deterioration and free of highly toxic azide agents; friction type fireworks and crackers prepared from the friction type pyrotechnic composition are high in explosion rate, large in loudness, better in set-off effect, good in environmental protection property and long in quality guarantee period.

The utility model discloses a processing device for carbon-oxygen powder for fireworks. The processing device sequentially consists of a calcining furnace, a wet ball mill and a vacuum concentration tank, mixing the material at the discharge hole of the calcining furnace with a ball milling medium, and carrying out ball milling in a wet ball mill; a mixture of the ball-milled material and the ball-milling medium is fed into a feed port of a vacuum concentration tank, and a heating coil is arranged in the vacuum concentration tank; a vapor-state ball-milling medium outlet in the top of the vacuum concentration tank is connected with the top of the condenser through a demister and enters a receiving cavity in the bottom of the condenser through the middle of the condenser; an inner cavity of the condenser is connected with a vacuum generating mechanism. Particle materials not larger than 400 meshes can be formed safely, efficiently and reliably, so that carbon-oxygen powder materials suitable for fireworks and pyrotechnic compositions are obtained; reliable and efficient separation of ball milling media and materials is realized; the processing and manufacturing process is safe, efficient and environment-friendly; the prepared carbon-oxygen powder is not only suitable for firework pyrotechnic compositions, but also free of smoke, odor and slag during combustion.

The invention relates to the fields of chemical industry, pyrotechnic compositions, fireworks and crackers and the like, and relates to preparation of strontium fumarate serving as a novel compound material with coloring agent and reducing agent effects, and preparation and application of the material in the fields of pyrotechnic compositions, fireworks and crackers and the like. The preparation method comprises the following steps: mixing fumaric acid and strontium carbonate or strontium oxide or strontium hydroxide, and heating an aqueous solution to prepare strontium fumarate; furthermore, strontium fumarate can be fully mixed with selected other substances to prepare a red pyrotechnic composition, and the red pyrotechnic composition can be applied to fireworks and crackers and other fields; in addition, strontium fumarate is mixed with other selected substances, a small amount of perchlorate can be selectively added to be fully mixed to prepare non-pyrotechnic composition or pyrotechnic composition substances in various geometrical shapes, and then the substances are placed in handheld, ground and air (including an aircraft) devices or equipment to be used for preparing the non-pyrotechnic composition or pyrotechnic composition. The non-pyrotechnic composition and the pyrotechnic composition substance can be ignited according to the electronic heating principle, and red light is emitted through combustion for color development.

The utility model discloses a drying chamber for powder pyrotechnic composition, and relates to the technical field of pyrotechnic composition production, the drying chamber comprises a drying room, a drying mechanism and a dehumidification mechanism, the side wall of the drying room is provided with a room door, the upper end of the drying room is provided with a hot water tank, the drying mechanism is arranged in the drying room, and the dehumidification mechanism is arranged in the drying room. The hot water circulates on the heat dissipation water pipe, the heat dissipation water pipe heats the heat conduction frame, the heat conduction frame heats and dries the firework powder in the charging tray, the drying room is provided with a dehumidification mechanism, and the dehumidification mechanism is used for slowly discharging moist air in the drying room, so that the hot water circulates on the heat dissipation water pipe, the heat dissipation water pipe heats the heat conduction frame, and the firework powder in the charging tray is heated and dried by the heat conduction frame. According to the utility model, the air hole plate and the three layers of dust screens are utilized to slow the air speed, so that only low-speed air flow formed by moisture removal and fresh air supplement in the drying room does not disturb the powder pyrotechnic composition, and the safety of the equipment is improved.

The invention relates to the technical field of gunpowder tabletting, and discloses a pyrotechnic composition automatic filling tabletting device and a method thereof.The pyrotechnic composition automatic filling tabletting device comprises an operation table, the operation table is provided with a tabletting assembly, the tabletting assembly comprises a middle shaft, the outer wall of the middle shaft is rotationally connected with a sleeve, and the outer wall of the sleeve is fixedly connected with a pressing disc and a hole disc; a plurality of tablet pressing holes are formed in the hole disc; a feeding assembly is arranged on the operation table and used for filling the tablet pressing holes with gunpowder. And an isolating assembly is arranged on the feeding assembly and used for spraying an isolating agent in the tabletting holes. Through cooperation of the tabletting assembly and the feeding assembly, in the continuous rotation process of the pressing disc and the hole disc, gunpowder in the material box is continuously filled into the multiple tabletting holes, the technical effect of continuous and automatic feeding is achieved, meanwhile, the multiple pressing shafts can sequentially move downwards to conduct tabletting treatment, and therefore the technical effect of automatic and continuous tabletting is achieved.

The utility model discloses a hydraulic forming device for pyrotechnic composition, which relates to the technical field of firework production equipment and comprises a base, a lower pressing block is arranged on the base, a template is arranged above the lower pressing block, an upper pressing block is arranged above the template, a cleaning component is further arranged at the upper end of the template, and a grain collecting component is arranged between the template and the lower pressing block. According to the utility model, the cleaning assembly is arranged at the upper end of the template, so that the problem that redundant gunpowder needs to be manually removed by using a scraping plate during filling is solved, and the potential safety hazard is reduced; and the grain collection assembly is arranged at the lower end of the template, so that grain collection is more convenient during discharging.

The invention discloses an initiating explosive device pharmaceutical composition as well as a preparation method and application thereof, the sensitivity of 5-aminotetrazole nitrate contained in the initiating explosive device pharmaceutical composition is low (comparable to TNT), and especially the electrostatic sensitivity is low. Meanwhile, the sensitizer is non-energetic inorganic matters such as glass powder. The safety of initiating explosive devices such as nail shooting pills containing the initiating explosive device pharmaceutical composition provided by the invention in production, transportation, use and storage can be greatly improved.

The utility model discloses a positive and negative rotation stirring device for mixing pyrotechnic compositions, which comprises a frame, a stirring component for stirring and mixing the pyrotechnic compositions is arranged on the frame, a driving component is mounted in the frame, a transmission component is arranged at an output shaft of the driving component, and the driving component drives the stirring component to work through the transmission component. The stirring assembly comprises a stirring shaft. According to the forward and reverse rotation stirring device for mixing the pyrotechnic composition, materials are stirred in a forward and reverse rotation mode, it can be guaranteed that all kinds of materials are fully mixed, meanwhile, the materials are prevented from being attached to the backs of the stirring blades, and the preparation quality of the pyrotechnic composition is guaranteed; the material barrel can be used in a proper mode according to use requirements, the stirring assembly can also be used for cleaning materials on the wall of the material barrel in the material stirring process, and the situation that part of the materials are attached to the wall of the barrel and cannot be fully mixed is avoided.

The invention relates to the technical field of pyrotechnic products, and discloses a pyrotechnic product for regulating ignition temperature and combustion reaction temperature based on transition metal hydroxide and a preparation method of the pyrotechnic product. The pyrotechnic composition product consists of an adhesive, a water-soluble pyrotechnic oxidant, a functional additive and a combustible agent, wherein the functional additive is transition metal hydroxide. Through co-crystallization or mixed crystal of pyrotechnic composition components and trace transition metal hydroxides and combustion catalysis of a water-soluble oxidant and carbohydrate mixed system, the ignition temperature of a pyrotechnic composition product is reduced, and the combustion reaction temperature is controllable.

The invention belongs to the technical field of firework and firecracker production equipment, and discloses a firework and firecracker quantitative charging device which comprises a workbench, a bearing disc is rotatably mounted on the surface of the workbench, a plurality of bearing holes which are annularly distributed at equal intervals are formed in the surface of the bearing disc, and a fixing plate is fixedly mounted on the surface of the workbench; a fixing plate is arranged on the workbench, a containing hopper is fixedly installed in the middle of the fixing plate, a medicine guide pipe is arranged at the bottom end of the containing hopper, a quantitative medicine charging mechanism is arranged in the medicine guide pipe and comprises a discharging assembly and an adjusting assembly, the discharging assembly is composed of a sealing part and a penetrating part, and a driving assembly is arranged on the bottom wall of the workbench. By arranging the discharging assembly composed of the sealing part and the penetrating part to be matched with the adjusting assembly, quantitative pyrotechnic composition can be automatically put into the firecracker paper tube, and the quantity of the pyrotechnic composition can be adjusted according to different filling requirements.

A plasticized pyrotechnic material can be easily portioned and formed or molded into a desired shape and burns at a high temperature (>2000° C.) but does not detonate. The plasticized pyrotechnic material may preferably include a combination of about 70-99% by weight of a pyrotechnic composition and about 1-30% by weight of a plasticizer composition comprising various low to mid molecular weight polyisobutylenes. The pyrotechnic material comprises inorganic oxidizers (e.g. metal oxides, oxohalide salts, nitrates, nitrites, chlorates / perchlorates) and metal or metal oxides powders mixed intimately. The plasticizer may include a small amount of a fluoropolymer, such as polytetrafluoroethylene (PTFE) and may also include up to 1-2% by weight of a processed oil, such as a mineral oil or motor oil. Some embodiments may also include a biocide precursor molecule.

The utility model relates to the technical field of fireworks, and discloses a mould pressing firework outer barrel which comprises an outer barrel body. The outer cylinder body is provided with a plurality of charging cavities for charging pyrotechnic compositions, the charging cavities are vertically arranged, and the upper ends of the charging cavities are open; the bottom of the outer cylinder body is provided with a lead groove used for coiling a lead, and the lead groove is a continuous groove. A plurality of fire stringing grooves are formed in the groove bottom of the lead groove, a plurality of fire transferring hole sets are formed in the groove bottom of each fire stringing groove, and the fire transferring hole sets correspond to the charging cavities in a one-to-one mode; each flash hole group comprises at least one flash hole; the fire transferring holes are respectively communicated with the bottom of the charging cavity and the fire stringing groove; a blocking groove is formed between every two adjacent fire stringing grooves, and the blocking grooves are formed in the wire leading grooves. According to the technical scheme provided by the utility model, the continuous firing of the molded fireworks is simpler, the setting-off effect of the molded fireworks is favorably improved, meanwhile, the economic cost can be reduced, the setting-off safety coefficient of setting-off is improved, and dangerous wastes are prevented from being generated in the recovery process.