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WO2016013951A1 - Article d'extinction d'incendie pour la protection à titre préventif d'un objet contre le feu - Google Patents

Article d'extinction d'incendie pour la protection à titre préventif d'un objet contre le feu Download PDF

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Publication number
WO2016013951A1
WO2016013951A1 PCT/RU2014/000532 RU2014000532W WO2016013951A1 WO 2016013951 A1 WO2016013951 A1 WO 2016013951A1 RU 2014000532 W RU2014000532 W RU 2014000532W WO 2016013951 A1 WO2016013951 A1 WO 2016013951A1
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WO
WIPO (PCT)
Prior art keywords
extinguishing
fire
product according
product
adhesive
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.)
Ceased
Application number
PCT/RU2014/000532
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English (en)
Russian (ru)
Inventor
Александр Дмитриевич ВИЛЕСОВ
Марина Сергеевна ВИЛЕСОВА
Юрий Станиславович КОЛЬЦОВ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTYU "DELSI"
Original Assignee
OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTYU "DELSI"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTYU "DELSI" filed Critical OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTYU "DELSI"
Priority to PCT/RU2014/000532 priority Critical patent/WO2016013951A1/fr
Publication of WO2016013951A1 publication Critical patent/WO2016013951A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00—Fireproofing materials
    • C09K21/14—Macromolecular materials

Definitions

  • the present invention relates to fire extinguishing means that provide preventive protection of various structural elements and various objects of technology and suppression of fire in the early stages of its occurrence and development, which is extremely popular in transport, in electronics, mechanical engineering, oil refining and coal mining, in the production of flammable materials, for example paints, varnishes and building materials, in other areas of human activity, including household needs.
  • One of the ways to place effective fire extinguishing agents in protected objects is to protect the object by coating its internal or external surfaces with a composite material, which, when it is heated to a certain temperature, releases the fire extinguishing agent contained in it into space in a gaseous state.
  • gaseous or liquid halogenated (fluoro, bromo, chloro, and iodo substituted) hydrocarbons are extremely effective.
  • Tetrafluorodibromoethane under the trade name Freon 114B2 and a number of other bromofluorinated hydrocarbons (Halogen-containing fire extinguishing agents, TEZA Publishing House, St. Russia, 1999) are widely known as a fire extinguisher for volumetric extinguishing.
  • Fire extinguishing agents containing halogenated hydrocarbons are suitable for extinguishing fires at structures on the seabed and offshore, on aircraft, in archives, at nuclear power plants and other structures.
  • Microencapsulated extinguishing agents are known, containing microcapsules having a core of extinguishing liquid gasifying low boiling substances in the shells. At elevated temperatures, the extinguishing fluid inside the shell overheats to temperatures well above its boiling point under normal conditions, to the critical point of explosive destruction of the shell. When the shell of the microcapsule is explosively destroyed by heat or flame, the agent releases a gasified fire extinguishing liquid in a gaseous state into the surrounding space.
  • the shells of microcapsules have increased barrier properties and are capable of their explosive destruction at a certain temperature.
  • the microencapsulated extinguishing agent can be used as a filler for the manufacture of structural composite materials, coatings, films, and other materials, imparting fire-extinguishing properties to these materials due to explosive destruction of the microcapsules contained in the material when the temperature rises to a certain level of destruction temperature.
  • JP 57-195128 A a fire extinguishing foam plastic in which very small polymer capsules containing liquid halogenated hydrocarbon are dispersed, and foaming is carried out at a temperature lower than the temperature of explosive fracture of these small polymer capsules.
  • the solid-phase carrier is a substrate made of a building material, for example, metal, polymer, textile material.
  • the polymeric material of the microcapsule shell is polyurea or polyurethane based on a polyisocyanate prepolymer.
  • Capsules have varying sizes from 2 to 100 microns, and the mass content of halocarbon in the extinguishing composition is 70-90%.
  • This fire extinguishing agent is completely safe for the ozone layer of the stratosphere, does not belong to the "greenhouse gases", is safe for people even in fire fighting conditions, it Efficiency allows you to stop the fire before reaching a dangerous concentration of combustion products, and there is no need for urgent evacuation of people from the premises.
  • This product has been widely used worldwide for gas fire extinguishing using special gas generating units.
  • a Russian analogue was developed under the name Freon PF -49.
  • this Novec 1230 extinguishing agent had to be encapsulated in a shell having a predetermined temperature of destruction with increasing temperature and the environment.
  • Dibromomethane is inferior to Novec 1230 in terms of toxicity, but is a much cheaper product, which determines the economic feasibility of its use.
  • Known reactive microencapsulated extinguishing agent (RU, 2469761, C1), providing simultaneous reactive release of a large volume of gasified fire extinguishing agents contained in it and containing microcapsules having a spherical polymer shell inside made of cured spatially crosslinked polymer material (for example, a complex of polyvinyl alcohol and urea-resorcinol-formaldehyde resin or crosslinked gelatin), a core of extinguishing fluid (perfluoroethyl- perfluoroisopropyl ketone - the so-called Novec 1230; dibromomethane; brominated hydrocarbons and fluorinated brominated hydrocarbons in a liquid state, in an amount of 75-95% by weight of a microcapsule).
  • cured spatially crosslinked polymer material for example, a complex of polyvinyl alcohol and urea-resorcinol-formaldehyde resin or crosslinked gelatin
  • the polymer shell of the microcapsules may contain nanoparticles of a mineral filler (from natural aluminosilicate montmorillonite or its analogues in an exfoliated state) in the form of nanosized plates having a thickness of 1-5 nm, in an amount of 1-5% by weight of the shell and has the ability of explosive destruction in the temperature range of 90-270 ° C.
  • a mineral filler from natural aluminosilicate montmorillonite or its analogues in an exfoliated state
  • nanosized plates having a thickness of 1-5 nm, in an amount of 1-5% by weight of the shell and has the ability of explosive destruction in the temperature range of 90-270 ° C.
  • microencapsulated extinguishing agent in the composition of reactive extinguishing coatings (RU, 2469761, C1) known to the authors showed its high efficiency, resistance to changes in ambient temperatures to the temperature of the destruction of the shells of microcapsules, and environmental safety. It is especially advisable to use microcapsules with Freon PFC-49 (domestic analogue of Novecl230) for products used in domestic conditions, since its concentration in the composition of microcapsules is necessary to suppress fires in people's stay areas (volumetric fire extinguishing concentration of about 5% vol.), In 10 times lower than safe concentration for humans (Noel).
  • the gasification products of PFC-49 freon are non-toxic, and the quenching occurs so quickly that the products practically do not spread in space, which is important, for example, when using fire-extinguishing structural elements in residential premises and in everyday life (in apartments, cottages, hotels, hospitals etc.).
  • the purpose of the invention was the creation of a fire extinguishing product, adapted for use in the external and internal areas of protected objects in areas to be protected from possible fires, with the possibility of fixing its position in these objects in the desired position, for reliable preventive protection of the object from a developing fire, and at the same time allowing its quick replacement after the expiration date or after the loss of fire-extinguishing properties , for example, as a result of its use in fire extinguishing.
  • the technical task was to create a fire extinguishing product, providing the possibility of placing a reactive fire extinguisher on a supporting element having a spatial configuration, which, from the point of view of the greatest extinguishing efficiency, is optimal in shape, volume, length and area of the working fire extinguishing surface in accordance with the external area and the volume of the protected zone of the object, due to the release into the zone of the source of ignition of the required volume of gasified decomposition products fire-extinguishers are most optimally situated surface extinguishing products, at a distance closest to the protected area and the zone of possible fires, and the possibility of subsequent quick removal of spent extinguishing products and their easy replacement.
  • the expected technical result was the provision of quick effective fire extinguishing of fires in the protected area of the object, the rapid placement of the extinguishing product in the protected object in an acceptable position and, if necessary, the rapid removal of the extinguishing product, both suitable for use and spent, from the protected object.
  • the problem was solved by creating a fire extinguishing product for the preventive protection of the object from fire, equipped with a fire extinguishing element fixed to the surface of the supporting element and containing a reactive microencapsulated fire extinguishing agent in a polymer matrix, characterized in that it is removable, has a spatial configuration that ensures that the product is placed in protected object, the location of the largest surface area of the extinguishing element in the protected area of the object or adjacent to it, when om in extinguishing element the extinguishing agent jet microencapsulated in microcapsules comprises placed inside the spherical shell polymer core of extinguishing liquid selected from the group comprising: tetrafluorodibromoethane, dibromomethane, tribromomethane, perfluoroethyl perfluoroisopropyl ketone and mixtures thereof, and the total amount of extinguishing liquid in the microcapsules of the extinguishing element
  • the extinguishing product has a spatial configuration selected from the group including: a plate, a tape, a cloth, a ball, a cylinder, a tube, a spiral.
  • the extinguishing product can be made in the form of a shaped product having a spatial configuration corresponding to the spatial configuration of the free volume of the protected zone.
  • the extinguishing product may have a flexible shape
  • the supporting element may be made in the form of a product selected from the group including: paper products, products from flexible polymeric material, products from flexible polymeric material, products from magnetic rubber, fiberglass products, woven and nonwoven fabric products, carbon fabric products.
  • the extinguishing product may have a rigid shape
  • the supporting element may be made in the form of a product from a material selected from the group including heat-resistant glass, metal, and ceramics.
  • the extinguishing product can be adapted to be installed by the surface of the supporting element, free from the extinguishing element, on the surface of the metal structural elements of the protected object and contain discrete structural elements of magnetic material placed on the supporting element under the extinguishing element.
  • the extinguishing product can be adapted to be installed by the surface of the supporting element, free of the extinguishing element, on the surface of the metal structural elements of the protected object, and the supporting element may be made of an elastic polymer material containing magnetic powder.
  • the extinguishing product can be adapted to be installed by the surface of the supporting element, free from the extinguishing element, on the surface of the metal structural elements of the protected object, and the supporting element may be made of an elastic polymer material containing magnetic powder, and the extinguishing element in the form of fragments thereof can be placed on the supporting element at a distance from each other.
  • the extinguishing product may be provided with a detachable device for its attachment to the structural elements of the protected object.
  • a detachable device for attaching the extinguishing product can be placed on the surface of the supporting element, free from the extinguishing element.
  • the supporting element in the extinguishing product, can be made in the form of a one-sided self-adhesive product containing a removable protective element on the adhesive layer, and the extinguishing element can be fixed at least on the surface area of the specified one-sided product free of adhesive by applying to it a polymer matrix containing microcapsules of a reactive microencapsulated extinguishing agent, in a liquid-viscous state, followed by its polymerization or subsequent m drying at room temperature.
  • a one-sided self-adhesive product can be made in the form of a one-sided self-adhesive film in the form of a cloth or tape.
  • a one-sided self-adhesive product can be made in the form of a one-sided self-adhesive plate.
  • the supporting element in the extinguishing product, can be made in the form of a double-sided self-adhesive product containing removable protective elements on the adhesive layers, and the extinguishing element can be fixed on the surface of one of the adhesive layers of the specified bilateral product, previously freed from its protective element by applying to it a polymer matrix containing reactive microcapsules microencapsulated extinguishing agent, in a liquid-viscous state, followed by its polymerization or drying at room temperature.
  • a double-sided self-adhesive product can be made in the form of a double-sided self-adhesive film in the form of a cloth or tape.
  • a double-sided self-adhesive product can be made in the form of a double-sided self-adhesive plate.
  • the extinguishing element in the extinguishing product, can be made in the form of a separate flexible product containing a carrier of a material selected from the group including: paper, polymeric material, fiberglass, carbon fabric, woven and non-woven material, with a reactive material placed on the carrier microencapsulated extinguishing agent in a polymer matrix, while the supporting element is made in the form of a double-sided self-adhesive product containing removable protective elements on the adhesive layers, and the finished extinguishing e ement disposed on a surface of the adhesive layer, previously freed from its protective element.
  • a carrier of a material selected from the group including: paper, polymeric material, fiberglass, carbon fabric, woven and non-woven material with a reactive material placed on the carrier microencapsulated extinguishing agent in a polymer matrix
  • the supporting element is made in the form of a double-sided self-adhesive product containing removable protective elements on the adhesive layers, and the finished extinguishing e
  • the carrier can be made in the form of a film in the form of a cloth
  • the supporting element is made in the form of a double-sided self-adhesive polymer film in the form of a cloth or tape.
  • the carrier can be made in the form of a film in the form of a tape
  • the supporting element is made in the form of a double-sided self-adhesive polymer film in the form of a cloth or tape.
  • the carrier can be made in the form of a film in the form of a cloth or tape, and the supporting element is made in the form of a double-sided self-adhesive plate.
  • the extinguishing product may contain, at least on one surface area of the supporting element free of the extinguishing element, a detachable attachment device made by applying to this area an amount of non-drying adhesive with its protective element in the form of a removable film.
  • the extinguishing product can be adapted for installation in the protected area of the object by hanging, and the supporting element can be equipped with a holder providing such a suspension.
  • the supporting element may be provided with a loop-hook holder.
  • the extinguishing product may be provided with a holder in the form of an external frame having a mesh structure with hollow cells of a large area and equipped with a device for hanging it.
  • the extinguishing product can be adapted for installation in the protected area of the object by embedding in the free region of its internal cavity and is made in the form of a liner.
  • the extinguishing product can be made in the form of a liner adapted for installation by attachment to the holder, made in the form of a mesh shelf or lattice, mounted in or near the protected area of the object.
  • the polymer matrix of the reactive microencapsulated extinguishing agent is made of a material selected from the group including: cold curing silicone rubbers; styrene butadiene rubber, polyvinyl acetate; polyvinyl alcohol, cold cured resilient epoxy resins; polyester resins; alkyd pentaphthalic enamels, alkyd glyphthalic enamels.
  • the polymer matrix of the reactive microencapsulated extinguishing agent in the extinguishing element, can be made of alkyd enamel in an organic solvent with the presence of pigments.
  • the polymeric material of the shell of the microcapsules of the reactive microencapsulated extinguishing agent is a polymeric material with explosive destruction in the temperature range of 90-270 ° C, which is a complex of polyvinyl alcohol and urea-resorcin-formaldehyde resin or crosslinked gelatin.
  • the polymeric material of the shell of the microcapsules of the reactive microencapsulated extinguishing agent contains nanoparticles of the mineral filler in an amount of 1-5% by weight of the shell.
  • the polymer material of the shell of the microcapsules contains nanoparticles of aluminosilicate montmorillonite or its analogues in an exfoliated state, made in the form of nanoscale plates having a thickness of 1-5 nm.
  • Figure 1 extinguishing product according to the invention, fragment, cross section;
  • Figure 2 28 extinguishing product according to the invention, embodiments.
  • a removable fire extinguishing product for reactive fire extinguishing can be implemented in the various embodiments of its components described below: the supporting element and the extinguishing element, with various options for placing and fixing the extinguishing element on the supporting element, with various options for placing and fixing the extinguishing product in the protected object.
  • the extinguishing product 1 for the preventive protection of the object from fire contains a supporting element 2 and an extinguishing element 3 placed on it, containing a reactive microencapsulated extinguishing agent B, including microcapsules with an extinguishing liquid, in a polymer matrix Zb, and made in the form of an independent removable product, adapted for its placement in the protected zone A ( Figure 1) or adjacent to it and its removal, for example, when the need for replacement after use or after the expiration date.
  • a reactive microencapsulated extinguishing agent Za is used as the reactive microencapsulated extinguishing agent Za, containing the core of the extinguishing liquid inside the spherical polymer shell in the microcapsules and providing, when the microcapsules contained in it are heated to a certain temperature and overheating and gasification of the extinguishing core , for example, heat from an external heat source, for example, from a source of ignition, which leads to nucleus of gaseous products and explosive destruction of shells with the release of jet jets C of gaseous products of gasification of extinguishing liquid into the surrounding space.
  • an extinguishing liquid is used selected from the group consisting of tetrafluorodibromoethane, dibromomethane, tribromomethane, perfluoroethyl perfluoroisopropyl ketone and mixtures thereof, and the total amount of the extinguishing liquid in the microcapsule of the extinguishing element 4.5 provides a concentration of 4.5 extinguishing 5.0 volume.% Of gasification products in the volume of the protected zone A of the facility, which is the minimum necessary (critical) for effective fire extinguishing by the specified extinguishing fluids in the volume of the protected zone.
  • the polymeric material of the microcapsule shell is a polymeric material with the ability to explosively destroy the shell in the temperature range of 90-270 ° C, which is a complex of polyvinyl alcohol and urea-resorcinol-formaldehyde resin or crosslinked gelatin.
  • the polymeric material of the shell of the microcapsules may contain nanoparticles of mineral filler in an amount of 1-5% by weight of the shell, preferably nanoparticles of aluminosilicate of montmorillonite or its analogues in an exfoliated state, made in the form of nanoscale plates having a thickness of 1-5 nm, and forming in the polymer base of the shell a layered structure parallel to the surface of the core of the microcapsule, which leads to the formation in the shell of frame structural elements associated with the polymer binder and having certain sizes.
  • the polymer matrix H3 of the reactive microencapsulated extinguishing agent is made of a material selected from the group including: cold cured silicone rubbers; styrene butadiene rubber, polyvinyl acetate; polyvinyl alcohol, cold cured resilient epoxy resins; polyester resins; alkyd pentaphthalic enamels, alkyd glyphthalic enamels, which provides the necessary elasticity or flexibility of the polymer matrix when forming the extinguishing element 3 in the composition of the extinguishing product 1 of various shapes.
  • the choice of the material of the polymer matrix 3b may be due to the requirements of the necessary flexibility of the finished fire extinguishing product or the flexibility of the matrix of the maximum thickness, ensuring the absence of cracking in the fire extinguishing element after its application to the surface of the supporting element 2 and drying.
  • the polymer matrix 3 of the reactive microencapsulated extinguishing agent in the extinguishing element, can be made of alkyd enamel in an organic solvent with the presence of pigments, for example, in the form of alkyd paints, which makes it possible to obtain colored extinguishing products 1, convenient for recognizing them in the protected object.
  • the extinguishing element 3 is formed on the supporting element 2 by applying to it a polymer matrix Zb containing microcapsules of a reactive microencapsulated extinguishing agent Za, in a liquid-viscous state, followed by polymerization or subsequent drying at room temperature.
  • the extinguishing product 1 may have a different spatial configuration depending on the intended location in the protected object and the method of its fastening in or adjacent to the protected zone.
  • the extinguishing product 1 has a spatial configuration selected from the group including: a plate, a tape, a cloth, a ball, a cylinder, a tube, a spiral.
  • the extinguishing product 1 according to the invention can have a flexible shape
  • the supporting element 2 can be made in the form of a product selected from the group including: paper products, products from flexible polymeric material, products from flexible polymeric material , magnetic rubber products, fiberglass products, woven and non-woven products, carbon fabric products.
  • the extinguishing product 1 may have a rigid shape
  • the supporting element 2 may be made in the form of a product from a material selected from the group including heat-resistant glass, metal, and ceramics.
  • the location of the largest surface area of the extinguishing element 3 in the protected area A of the object or adjacent to it must be ensured.
  • This arrangement of the surface of the fire extinguishing element 3 in the protected area And the object is provided fixing the extinguishing product 1 in the object in a different way in the desired position.
  • a detachable fastening device of the extinguishing product can be placed, providing the desired placement of the extinguishing element in the protected area or adjacent to it.
  • FIG 2-28 shows the construction of some embodiments of fire extinguishing products according to the invention, while in the shown embodiments, fire extinguishing element 3 can be used in one of the embodiments described above.
  • the fire extinguishing product 1 can be made in the form of plates of a rigid shape: a plate 1a (Fig. 2,4), containing a fire extinguishing element 3 of the same thickness on one side of the supporting element 2a (Fig. 2,4), made in the form of a plate, for example, from heat-resistant glass, metal, ceramics, or plate 1a (Fig. 3), containing an extinguishing element 3 of different thicknesses on two sides of the supporting element 2a (Fig. 3), made in the form of a plate, for example, of metal, ceramic, which do not change shape when operating under prolonged exposure I have high temperatures.
  • Such plates 1a can be equipped with a detachable device 4 for their attachment to the structural elements of the protected object in various ways: for example, hanging with a holder made in the form of a loop-hook device 4b, as shown in FIG. 3; by gluing with a holder made in the form of a detachable fastening device 4, for example, in the form of an adhesive non-drying connection, placed in areas free of fire extinguishing element, for example, as shown in Fig. 4, containing adhesive 4ai with a protective removable film 4c with an attachment to the free space of the protected zone (not shown).
  • the extinguishing product 1 can be adapted for installation directly on the surface of the structure of the protected object, for example, by magnetic interaction.
  • Fire extinguishing product 1 can be made in the form of a plate ⁇ a ⁇ ( Figure 5) of a rigid shape, adapted for installation by the surface of the supporting element 2ai, free of the fire extinguishing element, on the surface of the metal structural elements of the protected object and at the same time containing the fire extinguishing element 3 on one side of the supporting element 2a i , made in the form of a plate, for example, of ceramic, heat-resistant glass, on which before the formation of the fire extinguishing element 3, discrete structural elements M of magnetic material, for example, a metal alloy, were placed.
  • the extinguishing product 1a in the form of a plate can be made in the form of a plate 1a 2 (Fig.6) of a flexible shape adapted for installation by the surface of the supporting element 2a 2 , free from the extinguishing element 3, on the surface of the metal structural elements of the protected object, in which the supporting element 2a 2 is made of an elastic polymer material containing magnetic powder, for example ferrite, for example, magnetic rubber or magnetic vinyl.
  • the extinguishing product 1 can be adapted for installation directly on the surface of the structure of the protected object, for example, using an adhesive joint.
  • the extinguishing product 1 can be made in the form of a flexible tape lb (Fig. 7), in which a fire extinguishing element 3 is placed on one side of the carrier element 2b, made of, for example, paper, polymer film, woven or non-woven material, carbon fiber. by applying to it a polymer matrix containing microcapsules of a reactive microencapsulated extinguishing agent, in a liquid-viscous state, followed by its polymerization or subsequent drying at room temperature.
  • fastening devices 4 On the side of the supporting element 2b in separate parts of the surface there are fastening devices 4 in the form of an adhesive, non-drying compound containing adhesive 4ai with a protective removable film 4c b
  • the extinguishing product 1 can be made in the form of a flexible tape lbi (Fig. 8), in which the extinguishing element 3 is placed similarly on both sides of the supporting element 2b, made similarly to the element 2b of the tape lb, for example, from paper, from a polymer film, from woven or non-woven material, made of carbon fiber, excluding surface areas of one side for intended placement on the distance between them of the attachment device 4 in the form of an adhesive non-drying joint containing 4ai adhesive with a protective removable film 4ci .
  • the tape 1 b may have similar fastening devices 4 on the same side of the supporting element 2b on which the extinguishing element is placed, but in areas free of the extinguishing element.
  • the implementation of the device 4 fasteners in the form of separate adhesive joints located at a distance from each other allows not only to fix the extinguishing products 1, for example, made in the form of tape lb (Fig.7) or tape lbi (Fig.8), in the protected area with the envelope of the protruding structural elements, but also makes it possible to bring the extinguishing element 3 closer to the protected area by forming from the tapes having fastening devices 4 placed on the tapes at the desired distance between them, air loops of various lengths by fixing them stroystvami 4 mounting rimpedement distance.
  • Fig. 7 tape lb
  • Fig.8 tape lbi
  • the extinguishing product 1 can be made in the form of a flexible tape 1 b 2 ( Figure 10), in which the supporting element 2 b 2 is made in the form of a single-sided self-adhesive tape, for example, from paper, from a polymer film, from a woven or non-woven material, from carbon fiber containing on the adhesive layer 4a 2 a removable protective element 4c 2 , the extinguishing element 3 is fixed to the surface of the specified single-sided tape 2b 2 , free of adhesive, by applying a polymer matrix containing microencapsulated reactive microencapsulated onto it o extinguishing agent, in a liquid-viscous state, followed by its polymerization or subsequent drying at room temperature.
  • a polymer matrix containing microencapsulated reactive microencapsulated onto it o extinguishing agent, in a liquid-viscous state, followed by its polymerization or subsequent drying at room temperature.
  • the extinguishing product 1 can be made in the form of a plate or flexible tape 1 3 ( Figure 1 1), in which the supporting element 2 3 is made in in the form of a double-sided self-adhesive plate or tape, for example, from a polymer film, from a woven or non-woven material, from carbon, containing two adhesive layers 4a 2 , initially containing removable protective elements 4c 2 on each adhesive layer 4a 2; of which one protective element is removed before the formation of extinguishing element 3 by applying a polymer matrix containing microcapsules of a reactive microencapsulated extinguishing agent in a liquid-viscous state, followed by its polymerization or drying at room temperature.
  • the extinguishing product 1 can be made in the form of a flexible tape or cloth 1 b 4 (Fig. 12), in which the carrier 2 is made in the form of a double-sided self-adhesive product in the form of a cloth or tape, similar to the above-described carrier 2 b 3 (Fig.
  • the extinguishing element 3 is made in the form of a separate flexible product containing a carrier 5 from a material selected from the group including: paper, flexible polymeric material, fiberglass, carbon fabric, woven and non-woven material, carbon, with reactive material placed on the carrier 5 microencapsulated extinguishing agent in a polymer matrix, and the finished fire extinguishing element 3 is placed on the surface of one of the adhesive layers 4a 2 , previously freed from its protective element 4c 2 .
  • a carrier 5 from a material selected from the group including: paper, flexible polymeric material, fiberglass, carbon fabric, woven and non-woven material, carbon, with reactive material placed on the carrier 5 microencapsulated extinguishing agent in a polymer matrix, and the finished fire extinguishing element 3 is placed on the surface of one of the adhesive layers 4a 2 , previously freed from its protective element 4c 2 .
  • the carrier 5 can be made in the form of a film in the form of a cloth, and the supporting element 2b 3 can be made in the form of a double-sided self-adhesive polymer film in the form of a cloth or tape.
  • the carrier 5 can be made in the form of a film in the form of a tape, and the supporting element 2b 3 can be made in the form of a double-sided self-adhesive polymer film in the form of a cloth or tape.
  • the carrier 5 can be made in the form of a film in the form of a cloth or tape
  • the supporting element 2 3 can be made in the form of a double-sided self-adhesive plate. This variation in the design of the extinguishing element allows you to expand the range of extinguishing products in accordance with the conditions of their use.
  • the user removes the protective element 4c 2 and provides the contact of the adhesive layer 4a 2 , previously released from the protective element 4c 2, with the surface of the protected object, which is acceptable for placement of these extinguishing products by gluing both in the internal cavities of the protected object and on its external surfaces, with the location of the extinguishing element adjacent to the protected zone.
  • the extinguishing product 1 can be made in the form of a flexible panel 1c (Fig.13), in which the extinguishing element 3 is applied to the entire surface of the supporting element 2c, made in the form of a panel of a material selected from the group including: flexible polymer material, fiberglass, carbon fabric, woven and non-woven material, carbon.
  • the product 1c may contain on one side of the carrier 2c detachable fastening devices 4 made in the form of an adhesive non-drying connection containing adhesive 4ai with a protective removable film 4c 1; placed at a distance between them, as shown in Fig. 13.
  • the extinguishing product 1 can be made in the form of a flexible figured product lci (Fig. 14), in which the supporting element 2c, originally made in the form of a cloth from a material selected from the group including: flexible polymer material, fiberglass, carbon fabric, woven and non-woven material, carbon, bonded together by sides, for example, staples lf ls with the formation of a figure having a cross section in the form of a drop, the outer surfaces of which containing the fire extinguishing element 3 are directed at the upper part at an acute angle to each other, and at the bottom its parts are turned down and to the side, and the product lci is equipped with a detachable device 4b for fastening the “loop-hook” type, which allows the use of such a flexible fire extinguishing product lcj in protective zones of various configurations.
  • the supporting element 2c originally made in the form of a cloth from a material selected from the group including: flexible polymer material, fiberglass, carbon fabric,
  • the extinguishing product 1 can be made in the form of a flexible cloth 1c 2 (Fig. 15), on which several extinguishing elements 3 are placed, made previously in the form of separate flexible products containing a carrier 5 from a material selected from the group including: flexible polymer material, fiberglass, carbon fabric, woven and non-woven material, carbon, with a reactive microencapsulated extinguishing agent placed on a carrier 5 in a polymer matrix, while the supporting element 2c 2 is made in the form double-sided self-adhesive cloth made of a material selected from the group including: flexible polymer material, fiberglass, carbon fabric, woven and non-woven material, carbon, and finished fire-extinguishing elements 3 are placed on the surface of one of the adhesive layers 4a previously released from its protective element 4c 2 , on the distance between them
  • Such extinguishing products 1c 2 can be used for fixing, for example, on the walls of the enclosure of the protected object with the placement of extinguishing elements 3 directly above the protected equipment.
  • this design allows the extinguishing elements or their fragments, for example, in the form of circles, strips having different thickness of the extinguishing agent, for example, for their repeated use without loss of operability of the protected object, placed on the adhesive surfaces of the supporting element, for example, on each side bearing element, according to the place of their necessary placement. For example, picking up fragments of fire extinguishing elements 3 of different thicknesses at different sections of the extinguishing product 1 in case of different degrees of danger of fire of the opposing equipment (unit), which prolongs the period of overhaul maintenance of the protected object.
  • the extinguishing product 1 can be made in the form of a flexible panel 1c 3 (Fig. 16), adapted for installation by the surface of the supporting element 2c 3 , free from the extinguishing element 3, on the surface of the metal structural elements of the protected object, while the supporting element 2c 3 made of an elastic polymer material containing magnetic powder, for example ferrite, for example, magnetic rubber or magnetic vinyl.
  • Such extinguishing products 1c 3 can be placed above structures having shaped surfaces, for example, on the inner surfaces of engine compartments of automobile, water and air vehicles.
  • Fig-21 shows fire extinguishing products 1, made in the form of cylinders, adapted for installation in the protected object by gluing (Fig, 18) or hanging on the holder (Fig-21).
  • the extinguishing product 1 can be made in the form of a cylinder Id (Fig), in which the extinguishing element 3 is placed on the outer surface of the supporting element 2d, made in the form of a cylinder, for example, of plastic material or ceramics, in this case, detachable fastening devices 4ai made using a non-drying adhesive are placed on a surface area of the supporting element 2d free from the extinguishing element 3.
  • On Fig shows a fire extinguishing device 1 in the form of a cylinder Id, in which the fire extinguishing element 3 is placed on the lateral outer surface of the supporting element 2d, made in the form of a cylinder, for example, of ceramic, and having a detachable mount device 4ai on the end surface of the supporting element 2d, made using a non-drying adhesive.
  • the extinguishing product 1 can be made in the form of a cylinder Id (Fig. 20), in which the extinguishing element 3 is placed on the lateral outer surface of the supporting element 2d made in the form of a cylinder, for example, of ceramic, and the product Id has a holder 4bj consisting of an external a frame having a mesh structure with hollow cells of a large area, and a loop-hook device of its suspension.
  • Fire extinguishing product 1 can be made in the form of a liner, adapted for installation by attachment to the holder, made in the form of a mesh shelf or lattice, mounted in the protected area of the object or near it.
  • the extinguishing element 3 can be placed on the entire surface of the supporting element 2, and the extinguishing article 1 can have a convenient simple shape, such as a plate or cylinder.
  • the extinguishing product 1 can be made in the form of a cylinder Id (Fig. 21), in which the extinguishing element 3 is placed on the lateral outer surface of the cylinder-shaped supporting element 2d, for example, made of ceramic, and has a holder 4d in the form of a lattice shelf.
  • the extinguishing product 1 can be made in the form of a ball 1e (Fig.22), in which the extinguishing element 3 is placed on the surface of the supporting element 2e, made in the form of a ball made of metal alloy or heat-resistant glass and equipped with holder c. in the form of a detachable device 4b of attachment of the type "" loop-hook ".
  • the extinguishing product 1 can be made in the form of a liner in the form of a ball lei (Fig.23), in which the extinguishing element 3 is placed on the surface of the supporting element made in the form of a ceramic ball.
  • the extinguishing product 1 can be made in the form of an insert in the form of an If tube (Fig. 24), containing a supporting element 2f and having a holder 4bi, consisting of an external frame having a mesh structure with hollow cells of a large area, and its suspension device such as “” loop -hook”.
  • the extinguishing product 1 can be adapted for installation in the protected area of the object by an attachment and is made in the form of an insert to be placed in the free volume of the internal cavity of the object based on the structural elements of the object in this cavity and having a spatial configuration corresponding to the spatial configuration of the free volume of the protected zone.
  • the supporting element 2 may have a corresponding, for example, figured, shape, and the fire extinguishing element 3 can be placed on the entire outer surface of the supporting element 2 or in its individual sections opposite to the protected area of the object.
  • the extinguishing product 1 can be made in the form of a figured product having a spatial configuration corresponding to the spatial configuration of the free volume of the protected zone.
  • the extinguishing product 1 can be made in the form of an lfi tube (Fig.25), having a supporting element 2 in the form of a hollow shaped tube 2f, for example, of plastic material, with curved external surfaces corresponding to the surfaces of the equipment, limiting the amount of free space of the protected zone containing fire extinguishing elements 3.
  • This embodiment of the extinguishing product 1 allows you to provide the most approximate position of the working surface of the extinguishing element 3 and the protected equipment in the protective zone object.
  • the extinguishing product 1 can be made in the form of a tube lf 2 (Fig. 26) or in the form of a tube lf 3 (Fig, 27), not necessarily of circular cross section (the tube can be of various configurations) formed from a finished flexible or elastic extinguishing product 1 in the form of a cloth (or tape), having a fire extinguishing element 3 on the supporting element 2f 2 or 2f 3 and folded in place of its working position, for example, by wrapping an electrical contact unit, in the form of a hollow tube with longitudinal edges of the cloth fixed to each other, for example , with 4fi staples (Fig. 26) or 4f 2 clips (Fig. 27).
  • the extinguishing element 3 can be located only on the inner surfaces of the tube lf 2 or lf 3 , or on the inner and outer surfaces.
  • the extinguishing product 1 can be made in the form of a spiral lg (Fig. 28), which can have a flexible shape, for example, when the carrier 2g is made of plastic material, or a rigid shape, for example, when the carrier 2g is made of heat-resistant glass , and contain fire extinguishing element 3 on the entire surface of the supporting element.
  • the spiral ⁇ may have a holder in the form of a detachable fastening device 4b.
  • tetrafluorodibromoethane Reon 1 14B2
  • dibromomethane or tribromomethane
  • perfluoroethyl perfluoroisopropyl ketone Novec 1230 or PFC complex refrigerant in alcohol and 49
  • urea-resorcinol-formaldehyde resin or from cross-linked gelatin with the ability of explosive destruction in the temperature range of 90-270 ° C, for example, as described in patent RU, 2469761, C 1.
  • the weight ratio “polymer matrix - microcapsules” was 30-40 parts by weight for 70-60 parts by weight, respectively.
  • the weight ratio "polymer matrix - microcapsules” was calculated on the dry polymer residue in the ratio of 20-10 weight parts of polymer to 80-90 weight parts of microcapsules, respectively .
  • the total amount of extinguishing liquid in the microcapsules of the extinguishing element provided a concentration of 4.5-5.0% by volume of its gasification products in the volume of the protected area of the object, in the case of fire tests, in the volume of the internal cavity of the test fire box: for tetrafluorodibromethane - 5 vol.%, For perfluoroethyl perfluoroisopropyl ketone (HFC PFC -49) - from 4.5 to 5 vol.%, For dibromomethane - 5 vol.%, For tribromomethane - from 4.5 to 5 vol.%.
  • HFC PFC -49 perfluoroethyl perfluoroisopropyl ketone
  • the required number of microcapsules was determined taking into account the amount of extinguishing fluid placed in them and the mass of the inactive shell.
  • the initial composition of the uncured components of the extinguishing element was formed according to the technological instructions and the amount of the initial composition of the extinguishing element was determined (taking into account the evaporation of the solvent, if applicable), which was to be applied to the extinguishing product.
  • the amount of extinguishing liquid was required to extinguish the fire less than the theoretical amount, because for effective extinguishing in the fire zone there is no need to completely fill the protected zone, for example, the control cabinet, with gasification products of extinguishing liquids.
  • the use of the theoretically required amount of extinguishing liquid provides high reliability of elimination of fire and the absence of the danger of repeated fires.
  • the components of the extinguishing elements were mixed in a glass apparatus with a spatula manually or with a mechanical stirrer.
  • Polymerization or drying of the extinguishing layer was carried out in a room equipped with supply and exhaust ventilation, at a temperature of 20-25 ° C for 24 hours. It is possible to accelerate the polymerization or drying by holding it in an oven at temperatures up to 40 ° C.
  • the volume of the protected zone is 8 liters.
  • An extinguishing product in the form of a ball in the outer frame in the form of a grid with a loop-hook device for its suspension (a supporting element is a glass ball with a diameter of 30 mm) (Fig. 22), suspended by the type of “ball in the center of the box”, distance from the bottom of the extinguishing element to the burning surface of 75 mm, the volume of the protected zone is 8 l
  • polyester resin 40-35 polyvinyl acetate 35 30 polyvinyl alcohol 35-30 alkyd 40-35 pentaphthalic enamel
  • polyester resin 40-35 polyvinyl acetate 35-30 polyvinyl alcohol 35-30 alkyd 40-35 pentaphthalic enamel
  • polyester resin 45-35 polyvinyl acetate 40-35 polyvinyl alcohol 40-35 alkyd 45-35 pentaphthalic enamel
  • epoxy resin 30-250 polyester resin 30-251 polyvinyl acetate 25-202 polyvinyl alcohol 25-203 alkyd 30-25
  • polyester resin 30-258 polyvinyl acetate 25-209 polyvinyl alcohol 25-200 alkyd 25-20
  • An extinguishing product in the form of a spiral (a supporting element in the form of a spiral 115 mm long with an outer diameter of 7 mm from a hollow tube with a diameter of 5.0 mm made of heat-resistant glass) with a loop-hook holder 20 mm long (Fig. 28), suspended from the center of the lid boxing, the distance from the lower point of the extinguishing element to the fuel surface is 55 mm, the volume of the protected zone is 8 l
  • polyester resin 25-20 6 polyvinyl acetate 18-12 7 polyvinyl alcohol 18-12 8 alkyd 20-18
  • a fire extinguishing product in the form of a self-adhesive plate (a supporting element in the form of a double-sided self-adhesive plate of size 0x80mm 2 mm thick, on one side of which, after removing its protective film, a fire extinguishing element is fixed by spraying) (Fig. 11), glued to the box lid, the distance from the bottom point fire extinguishing element to the fuel surface 188mm, the volume of the protected zone 8l
  • a fire extinguishing product in the form of a self-adhesive plate (a supporting element in the form of a double-sided self-adhesive plate measuring 40x80mm 2 mm thick, on one side of which, after removing its protective film, a fire extinguishing element is fixed by spraying) (Fig. 11), glued to the box lid, a distance of 120 mm from the bottom points of the extinguishing element to the level of the fuel surface raised to a height of 70 mm, the volume of the protected zone is 8 l
  • a fire extinguishing product in the form of a tape with detachable fastening at its ends in the form of a non-drying adhesive carrier element in the form of a tape 80 mm long, 20 mm wide of glass fiber
  • carrier element in the form of a tape 80 mm long, 20 mm wide of glass fiber
  • box cover in the form of a soft loop 40 mm long (Fig. 7)
  • a fire extinguishing product in the form of a tape with detachable fastening at its ends in the form of a non-drying adhesive (carrier element in the form of a tape 340 mm long, 20 mm wide of fiberglass fabric), is placed on the box cover in the form of a soft loop 160 mm high (Fig. 7), the distance from the bottom points of the extinguishing element to the fuel surface 30mm, the volume of the protected zone 8l50 tetrafluorodibromoethane silicone rubber 15-1051 styrene butadiene
  • polyester resin 15-1054 perfluoroethyl-silicone rubber 15-1055 perfluoroisopropyl ketone butadiene styrene 15-10 rubber
  • the data presented in the table are for demonstration purposes. In real conditions, the user selects a fire extinguishing product from the proposed options specifically for the product to be protected, its dimensions and design features and the volume of the protected zone.
  • extinguishing product for the same volume of the area to be protected and with the same content of the extinguishing liquid in the extinguishing element, it is advisable to use, if the design of the protected object allows, extinguishing products with the most developed surface of the extinguishing element, for example, extinguishing products in the form of a spiral, and not in the shape of a cylinder.
  • the choice of the shape (design) of the fire-retardant product may be due to the technological convenience of its placement and replacement in case of operation or expiration of the warranty period.
  • fire extinguishing products in the form of lining single-sided plates glued to paper tapes, or to directly mount fire-extinguishing products having bearing elements made of magnetic rubber.
  • a ball or a cylinder or a spiral is convenient (depending on the configuration of the protected zone) with the equally probable ingress of hot gases from the burning center onto the extinguishing element.
  • fire-extinguishing products in the form of panels mounted on the metal elements of the engine compartment structures using magnetic interaction with them are convenient bearing elements containing magnetic powder.
  • fire extinguishing elements can be made fragmentary in a given relative position on the supporting element.
  • extinguishing fluid for microcapsules is also determined by a number of reasons. So, tetrafluorodibromoethane (Freon 114B2) is undoubtedly very effective, and its microencapsulation process has long been developed on an industrial scale. However, in a number of highly developed countries, its production and use are prohibited due to environmental hazards (Montreal Protocol for the Protection of the Ozone Layer of the Stratosphere). In terms of high environmental and hygienic safety and high fire extinguishing efficiency, perfluoroethyl perfluoroisopropyl ketone (HFC PFC-49 or Novec 1230) is the most acceptable, but it is the most expensive, and its microencapsulation is the most complex technological process.
  • HFC PFC-49 or Novec 1230 perfluoroethyl perfluoroisopropyl ketone
  • the choice of material of the polymer matrix is determined by a number of technical and economic requirements and considerations.
  • flexible soft materials are needed, for example, allowing them to be wrapped around a protected object in a tube.
  • a matrix of silicone or styrene-butadiene rubber on a flexible support element such as, for example, fiberglass, technical fabric, non-woven material, and the like, is selected.
  • a fire extinguishing product with surfaces of significant curvature for example in the form of a ball, spiral, cylinder, shaped insert, as well as for the formation of a fire extinguishing product to be embedded or fixed in the object with a change in its original spatial configuration it is advisable to use a polymer matrix in the extinguishing element and use a solid support element made of a material with a certain elasticity, which avoids cracking of the extinguishing element during its polymerization or drying and operation.
  • These are matrices from the group of elasticized epoxy and polyester resins.
  • the support element may be solid, for example metal, glass, ceramic, or a solid film material, for example, mylar film (with single or double-sided adhesive coating), the degree of flexibility of which is determined by the thickness of the film.
  • the supporting element can be selected in the form of an adhesive coated paper product or magnetic rubber product.
  • Fire extinguishing products according to the invention depending on the technical field or domestic needs of their application and on the method of their fixation in the protected object, containing fire extinguishing elements in the fire extinguishing elements of the desired reactivity (in microcapsules) in various desired polymer matrices on the supporting elements of the desired elasticity, flexibility, shape from various materials, with various devices for their fastening, provide potential consumers with a wide selection of extinguishing products as per technical suitability ty, and in economic terms.
  • the extinguishing products according to the invention can be made using known technologies from known materials and can be widely used in various industries for the preventive protection of various objects from fire.

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  • Chemical & Material Sciences (AREA)
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  • Engineering & Computer Science (AREA)
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  • Organic Chemistry (AREA)
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Abstract

L'article d'extinction d'incendie (1) pour la protection à titre de prévention d'un objet contre le feu comprend un élément d'extinction d'incendie (3) fixé à la surface de l'élément porteur (2) et contenant un agent d'extinction d'incendie réactif sous forme de microcapsules (3a) dans une matrice polymère (3b) est amovible et possède une configuration spatiale assurant, lorsque l'article (1) est placé dans un objet à protéger, la présence d'une superficie maximale de la surface de l'élément d'extinction d'incendie (3) dans la zone protégée (A) de l'objet ou immédiatement à côté de celle-ci, l'élément d'extinction d'incendie (3) comprenant l'agent d'extinction d'incendie réactif sous forme de microcapsules (3a) à l'intérieur desquelles, dans l'enveloppe polymère sphérique, on trouve un noyau en liquide d'extinction d'incendie sélectionné dans le groupe qui comprend: tétrafluorodibromoéthane, dibromométhane, tribromométhane, perfluoroéthyl-perfluoroisopropylcétone et leurs mélanges, la quantité totale de liquide d'extinction d'incendies dans les microcapsules de l'élément d'extinction assurant une concentration de 4,5-5,0 % en volume de produits de sa gazéification dans la volume de zone d'objet protégée. L'article d'extinction d'incendie (1) peut être réalisé dans différentes variantes en ce qui concerne sa forme, son procédé de fixation dans l'objet à protéger et l'efficacité d'extinction d'incendie, avec des éléments d'extinction d'incendie ou des éléments porteurs dans différentes variantes en ce qui concerne leur réalisation conceptuelle, leur matériau et leur forme.
PCT/RU2014/000532 2014-07-21 2014-07-21 Article d'extinction d'incendie pour la protection à titre préventif d'un objet contre le feu Ceased WO2016013951A1 (fr)

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RU179466U1 (ru) * 2017-11-01 2018-05-15 Акционерное общество "Фортис" Автономная установка пожаротушения на основе термоактивируемого агента, содержащегося в микрокапсулах
RU196602U1 (ru) * 2019-12-30 2020-03-06 Общество с ограниченной ответственностью "РУССКИЕ ИНТЕЛЛЕКТУАЛЬНЫЕ ТЕХНОЛОГИИ АВТОМАТИЗАЦИИ" Микроогнетушитель
CN111420336A (zh) * 2020-03-03 2020-07-17 北京理工大学 锂离子电池热失控燃爆安全防控方法及装置
RU2734825C1 (ru) * 2020-03-19 2020-10-23 Общество с ограниченной ответственностью "НИКОЛЬ" Термоактивирующая полимерная матрица микрокапсулированного огнетушащего вещества
RU2745357C1 (ru) * 2020-03-19 2021-03-24 Общество с ограниченной ответственностью "НИКОЛЬ" Композиционный материал с микрокапсулированным огнетушащим веществом
RU203897U1 (ru) * 2020-11-18 2021-04-26 Владимир Витальевич Полиенко Огнетушащий элемент
US11045673B2 (en) 2016-10-05 2021-06-29 Tyco Building Services Products Limited Methods and system for filling a suppressant container
US12133999B2 (en) 2016-10-05 2024-11-05 Tyco Building Services Products Limited Methods and system for filling a suppressant container

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US11045673B2 (en) 2016-10-05 2021-06-29 Tyco Building Services Products Limited Methods and system for filling a suppressant container
US12133999B2 (en) 2016-10-05 2024-11-05 Tyco Building Services Products Limited Methods and system for filling a suppressant container
RU179466U1 (ru) * 2017-11-01 2018-05-15 Акционерное общество "Фортис" Автономная установка пожаротушения на основе термоактивируемого агента, содержащегося в микрокапсулах
RU196602U1 (ru) * 2019-12-30 2020-03-06 Общество с ограниченной ответственностью "РУССКИЕ ИНТЕЛЛЕКТУАЛЬНЫЕ ТЕХНОЛОГИИ АВТОМАТИЗАЦИИ" Микроогнетушитель
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RU2734825C1 (ru) * 2020-03-19 2020-10-23 Общество с ограниченной ответственностью "НИКОЛЬ" Термоактивирующая полимерная матрица микрокапсулированного огнетушащего вещества
RU2745357C1 (ru) * 2020-03-19 2021-03-24 Общество с ограниченной ответственностью "НИКОЛЬ" Композиционный материал с микрокапсулированным огнетушащим веществом
RU203897U1 (ru) * 2020-11-18 2021-04-26 Владимир Витальевич Полиенко Огнетушащий элемент

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