EP3799935A2 - Intumeszierende brandschutzdecke - Google Patents

Intumeszierende brandschutzdecke Download PDF

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Publication number
EP3799935A2
EP3799935A2 EP20198874.8A EP20198874A EP3799935A2 EP 3799935 A2 EP3799935 A2 EP 3799935A2 EP 20198874 A EP20198874 A EP 20198874A EP 3799935 A2 EP3799935 A2 EP 3799935A2
Authority
EP
European Patent Office
Prior art keywords
layer
spaces
fabric
plates
intumescent material
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.)
Granted
Application number
EP20198874.8A
Other languages
English (en)
French (fr)
Other versions
EP3799935A3 (de
EP3799935B1 (de
Inventor
Vincent Raillard
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.)
Soletanche Freyssinet SA
Original Assignee
Soletanche Freyssinet SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Soletanche Freyssinet SA filed Critical Soletanche Freyssinet SA
Publication of EP3799935A2 publication Critical patent/EP3799935A2/de
Publication of EP3799935A3 publication Critical patent/EP3799935A3/de
Application granted granted Critical
Publication of EP3799935B1 publication Critical patent/EP3799935B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A62C2/065—Physical fire-barriers having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
    • 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
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C8/00—Hand tools or accessories specially adapted for fire-fighting, e.g. tool boxes
    • A62C8/06—Fire-blankets

Definitions

  • the invention relates to the field of the protection of elongated devices such as cable trays or pipes by fire protection fabric and in particular by coating the cable trays with one or more intumescent fire protection covers.
  • fire protection made from insulating fibrous materials limit the dissipation of the heat produced by the power cables and require ventilation devices which increase the weight and size of the system.
  • This embodiment makes it possible in particular to have zones of expansion of the intumescent material in the event of fire and good cooling of the cable trays in normal use.
  • the stacked ends can in particular form areas for fixing the covers by metal links or clamps.
  • said spaces are filled with ambient air.
  • separating means are arranged in said spaces to reinforce the structure of the cover.
  • Said separator means may be perforated plates or accordion separators which fill part of the free space to reinforce the structure while leaving space to allow the intumescent material to swell.
  • the separating means can be made of fusible martial material which will make room for the intumescent material when it swells.
  • the plates of the cover suitable for covering cable trays, pipes or other equipment to be protected from fire may include a first layer consisting of a fabric of a material in particular a glass fabric resistant to heat above 500 ° C or a fabric with meta-aramid fibers and a second layer made of an intumescent material such as a silicone or other acrylic, epoxy or PVC intumescent material, said intumescent material containing graphite and / or silicate fillers.
  • An advantage of the invention is that before the intumescence, the thermal conductivity of the material is high and its thickness smaller than the fibrous devices which allows cooling of the cables or pipes covered by the covers by conduction much greater than for wool-based thermal insulation systems, which eliminates the need for ventilation devices and reduces the weight and size of the system.
  • a third layer of a bonding material is interposed between the first layer and the second layer.
  • the hanging material is in particular a material of the same chemical nature as the intumescent material.
  • It is preferably of the polycondensation or polyaddition type and is adapted to promote the adhesion of the intumescent material on the first layer. It can be a material crosslinked at room temperature.
  • the first layer is preferably coated on its side opposite the second layer with a topcoat forming one side. external cover.
  • the topcoat is advantageously made with a silicone material.
  • the silicone finishing layer is advantageously produced in a material of the polycondensation or polyaddition type. It can be a material crosslinked at room temperature.
  • the intumescent material is advantageously of the polycondensation or polyaddition type and allows protection against fire by modifying its thermal properties during its expansion. It can be a material crosslinked at room temperature.
  • Said elongated elements are in particular cable trays or pipes, the covers being arranged on all the faces of said cable trays or pipes and held by clamping means such as clamps, wire or the like.
  • the covers made with the materials of the present application have the advantage of being light and flexible and of not running the risk of projecting fibers which could clog filters in the event of deterioration of the protections of the cable trays in the case of blowing by a steam jet or other.
  • the intumescent fire protection cover 1 of the figure 1 comprises a layer 10 made of a fabric resistant to heat, in particular a fabric of glass resistant to heat above 500 ° C. or a fabric of aramid fibers resistant to heat.
  • aramid fiber fabrics a fabric based on meta-aramid fibers and in particular (poly (metaphenylene isophthalamide), PA MPD-I) known under the name Nomex, the heat resistance of which is lower than glass but which remains a second choice which may be used.
  • poly (metaphenylene isophthalamide), PA MPD-I) known under the name Nomex, the heat resistance of which is lower than glass but which remains a second choice which may be used.
  • This layer is made to offer very good tensile strength depending on the warp or weft of the fabric as well as tearing while allowing it to be cut with a chisel or cutter.
  • the inexpensive glass fabric is particularly well suited to this application and will be taken as a non-limiting example in the description below.
  • This glass fabric constitutes a support layer for a layer 11 of an intumescent product such as an intumescent silicone material or an acrylic, epoxy or PVC intumescent material containing graphite fillers.
  • an intumescent product such as an intumescent silicone material or an acrylic, epoxy or PVC intumescent material containing graphite fillers.
  • the glass fabric makes it possible to produce a base layer which does not deform in its plane which makes it possible to maintain good cohesion with the layer of intumescent material up to high temperatures, the glass fiber only becoming viscous when temperatures of the order of 800 ° C.
  • the glass fabric is preferably a fabric comprising 5 to 10 threads / cm in weft and warp, for which the threads are composed of 100 to 300 strands of glass, the fabric having a basis weight of 400 to 800 g / m 2 .
  • the layer of intumescent material is produced in the example which follows from a silicone material crosslinking at room temperature but as seen above, an acrylic, epoxy or PVC intumescent material containing graphite or silicate fillers can be used.
  • This material can be in the form of a coating applied, for example, by a single or multi-pass coating process on the layer of fabric optionally previously covered with a layer of bonding material 12 of the same chemical nature as the intumescent material.
  • Such a layer of bonding material 12 between the glass fabric and the layer of intumescent material is according to the example a layer of silicone bonding material crosslinking at room temperature in the case of an intumescent material based on silicone, an acrylic material for an acrylic-based intumescent material, an epoxy material for an epoxy-based intumescent material, a PVC material for a PVC-based intumescent material.
  • the bonded layer is deposited on the fabric for example by a coating process before the laying of the layer of intumescent material.
  • This grip layer allows better grip of the intumescent material on the fabric.
  • the material of the tack coat is applied in a thin layer on the fabric, typically 100 to 300 g / m 2 .
  • the fabric is a glass fabric
  • the bonding layer is a silicone material
  • the intumescent material is silicone-based.
  • this material in particular silicone, is a material loaded with a silicate or graphite base, which allows it to swell in the event of a rise in temperature.
  • This material for its application, contains a catalyst to allow its crosslinking as well as a setting retarder to extend its setting time at room temperature. This allows easy application to the fabric without however disturbing the process. of crosslinking accelerated by heating for which it is sought to have the shortest possible setting time, typically of the order of a few minutes at around 140 to 180 ° C.
  • the dosage between the silicate base and / or expandable graphite is adapted according to the process employed.
  • the outer face of the cover the face comprising the layer of fabric 10 and the inner face the face comprising the intumescent material because the face of the cover in contact with the object to be protected, for example a path cable is the face comprising the intumescent material and the outer face of the cover with respect to the object to be protected is the face comprising the fabric.
  • the cover according to the example comprises, on the outer face of the fabric, a finishing layer 13 for which a silicone material or an acrylic finishing sealant crosslinking at room temperature is used.
  • This material can be a liquid material applied, for example, by a coating process and which is then allowed to crosslink.
  • This finishing material makes the fabric waterproof and airtight, washable and decontaminable. It is applied in a thin layer, typically 100 to 300 g / m 2 .
  • the silicone, acrylic, epoxy or PVC materials containing graphite and / or silicate fillers can in particular be of the polycondensation or polyaddition type. These are materials which are preferably crosslinkable at room temperature.
  • the manufacturing process starts from a roll of fabric of width compatible with the coating ovens of a continuous production line which comprises a station for applying the hanging material at room temperature, a coating station of this material and crosslinking by heating, a station turning over the material to apply the topcoat and proceed to its heating for its crosslinking.
  • the blanket with a width of a few meters is then packaged in rolls, for example 500 meters long to be delivered to the user who will cut plates adapted to the elements to be protected.
  • the intumescent cover of the present application can be installed on cable trays or other elongated elements passing through rooms such as pipes with its inner face of intumescent silicone material applied to said elongated elements and its washable outer face on the outer face.
  • FIG. 2 which represents a longitudinal section of a cable tray where the plates 1a, 1b are positioned juxtaposed on the upper and lower faces and on the side faces, not shown.
  • the cover plates are sized according to the dimensions of the devices to be covered and, for example, plates of width equal to that of the cable trays and plates of width equal to the height of the cable trays can be produced.
  • the plates can be cut to have a length of 1m to 2m and can be cut to fit on the devices to be protected.
  • the figure 3 shows the improved configuration of the invention which leaves gaps between the layers to provide space for the material as it swells with heat.
  • the first layers of plates 3a and 3b are laid respectively on and under the cable tray, leaving first spaces 6 between them of a length such that the ends of these plates are covered by the ends of second layers of plates. 4a, 4b overlapping the first spaces and themselves leaving second spaces between them 7.
  • the operation is reproduced with a third layer of plates 3'a, 3'b overlapping the second spaces and separated from each other by third spaces 8 and a fourth layer of plates 4'a, 4'b separated by spaces 9.
  • the spaces between the intumescent cover plates allow the expansion of the intumescent material under the action of the heat of a fire without noticeable swelling of the material. protection.
  • the stacked ends 5 with a length of the order of 5% to 20%, preferably 5% to 10% of the length of the plates will, for example, serve as areas for fixing the covers by metal links or hose clamps.
  • the spaces between the cover plates can be left empty and are then filled with ambient air.
  • filling means such as separators 20, 21 adapted to keep the plates apart are arranged in the spaces between the plates to reinforce the coverage of the protected devices.
  • filling means can be produced by perforated plates 20 such as honeycomb or partitioned plates or accordion separators 21 arranged in the spaces between the plates of the covering material.
  • They may or may not be made of a fusible material.
  • the material of the separators is a fusible material
  • the resorption of this material will leave room for the swelling of the layer of intumescent material of the plates when subjected to heat. Otherwise, the shape of the separators will allow the intumescent material to swell.
  • the cover plates are held on the cable trays in the traditional way, for example by means of metal clamps. They can surround several faces of the cable tray or be positioned face by face.
  • the invention is not limited to the examples shown and in particular more than four thicknesses of coverings per side of the cable tray can be used.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Laminated Bodies (AREA)
  • Fireproofing Substances (AREA)
EP20198874.8A 2019-10-03 2020-09-29 Intumeszierende brandschutzdecke Active EP3799935B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1910968A FR3101552B1 (fr) 2019-10-03 2019-10-03 Couverture intumescente de protection au feu

Publications (3)

Publication Number Publication Date
EP3799935A2 true EP3799935A2 (de) 2021-04-07
EP3799935A3 EP3799935A3 (de) 2021-06-09
EP3799935B1 EP3799935B1 (de) 2025-01-29

Family

ID=69699962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20198874.8A Active EP3799935B1 (de) 2019-10-03 2020-09-29 Intumeszierende brandschutzdecke

Country Status (4)

Country Link
EP (1) EP3799935B1 (de)
FI (1) FI3799935T3 (de)
FR (1) FR3101552B1 (de)
HU (1) HUE070460T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4260914A1 (de) 2022-04-11 2023-10-18 Soletanche Freyssinet Brandschutzvorrichtung
FR3144920A1 (fr) 2023-01-16 2024-07-19 Elkem Silicones France Sas Dispositif de protection passive contre l’incendie comprenant une mousse silicone

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2973252A1 (fr) 2011-04-01 2012-10-05 Soletanche Freyssinet Revetement de protecton anti-feu et procede d'application

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258216A (en) * 1990-12-22 1993-11-02 Bayer Aktiengesellschaft Sheet-like structures capable of intumescence, their production
JP4748540B2 (ja) * 2008-05-16 2011-08-17 株式会社古河テクノマテリアル 可燃性長尺体貫通部の防火処理方法
US20130118764A1 (en) * 2010-07-22 2013-05-16 Raymond Porter Smoke, sound and fire resistant blanket

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2973252A1 (fr) 2011-04-01 2012-10-05 Soletanche Freyssinet Revetement de protecton anti-feu et procede d'application

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4260914A1 (de) 2022-04-11 2023-10-18 Soletanche Freyssinet Brandschutzvorrichtung
FR3144920A1 (fr) 2023-01-16 2024-07-19 Elkem Silicones France Sas Dispositif de protection passive contre l’incendie comprenant une mousse silicone
WO2024153869A1 (fr) 2023-01-16 2024-07-25 Elkem Silicones France Sas Dispositif de protection passive contre l'incendie comprenant une mousse silicone

Also Published As

Publication number Publication date
HUE070460T2 (hu) 2025-06-28
FR3101552B1 (fr) 2023-08-25
FR3101552A1 (fr) 2021-04-09
FI3799935T3 (fi) 2025-03-06
EP3799935A3 (de) 2021-06-09
EP3799935B1 (de) 2025-01-29

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