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US20050257460A1 - Fireproof material - Google Patents

Fireproof material Download PDF

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Publication number
US20050257460A1
US20050257460A1 US11/128,746 US12874605A US2005257460A1 US 20050257460 A1 US20050257460 A1 US 20050257460A1 US 12874605 A US12874605 A US 12874605A US 2005257460 A1 US2005257460 A1 US 2005257460A1
Authority
US
United States
Prior art keywords
fireproof material
fireproof
inclusions
shaped
matrix
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.)
Abandoned
Application number
US11/128,746
Inventor
Rudolf Semler
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Assigned to HILTI AKTIENGESELLSCHAFT reassignment HILTI AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SEMLER, RUDOLF
Publication of US20050257460A1 publication Critical patent/US20050257460A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/04—Sealing to form a firebreak device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/04—Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/145—Arrangements for the insulation of pipes or pipe systems providing fire-resistance
    • 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
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways

Definitions

  • the present invention relates to a fireproof material for protecting conduits such as cable channels or pipes in case of fire.
  • Fireproof material of the type mentioned above is used, e.g., in the form of pipe sections, matting, or as strips for shielding conduits such as cables conduits, cable routes, insulated steel pipes, plastic pipes, etc., to squeeze and to completely cut off the latter in case of fire.
  • conduits such as cables conduits, cable routes, insulated steel pipes, plastic pipes, etc.
  • the cables, conduits, routes, etc. mentioned above are lined or covered in a ring-shaped manner by the fireproof material in the area of a wall lead through.
  • WO 99/18303 A1 discloses a method of protecting from fire of pipes and cable conduits from fire according to which various fireproof materials are arranged in layers around pipes or cable conduits in the area where they pass through a wall. For example, a strip-shaped intumescent material is placed around a pipe conduit initially and a layer of a material that shrinks when acted upon by heat is then arranged around this layer. In the event of fire, this layer of the shrinkable material contracts when heated and reinforces the squeezing of the pipe by the intumescent compound.
  • a fireproof material having a matrix of plastic material which can shrink when acted upon by heat and in which inclusions of an active fireproof material are embedded.
  • the shrinkable plastic materials are, e.g., polyolefins, fluoropolymers and elastomers whose molecules are crosslinked, e.g., by radiation polymerization, while as the active fireproof material, e.g., an intumescent, ceramizing or ablative material can be used.
  • This step provides a homogeneous fireproof material which can be arranged at a conduit in only one work step and can be sealingly shrunk over this conduit by heating.
  • the fireproof material can be produced by a continuous method, e.g., as strip goods.
  • This strip-shaped fireproof material can then be wrapped around conduits and subsequently sealingly shrunk thereon.
  • inclusions can also be shaped in any other manner, e.g., be made spherical, granular, or rod-shaped.
  • the fireproof material can advantageously be tubular. In this way, it can be pulled directly over a conduit and then shrunk onto it.
  • An adhesive layer can be advantageously applied to a flat side of a strip-shaped fireproof material, and the fireproof material can be preliminary fixed on a conduit by the adhesive layer prior to shrinking.
  • the fireproof material can advantageously also be formed as a ductile or kneadable mass. This mass can be used in a flexible manner also for conduit lead-throughs that are difficult to access and can be pressed into very narrow gaps. By a subsequent heating, the kneadable fireproof material can then be sealingly shrunk over the cable.
  • FIG. 1 is a cross-sectional view of a ring-shaped fireproof material according to the present invention, arranged around a conduit;
  • FIG. 2 shows a view similar to that of FIG. 1 with the fireproof being shrunk on the conduit;
  • FIG. 3 shows a cross-sectional view of a strip-shaped fireproof material according to the invention
  • FIG. 4 shows a cross-sectional view of the strip-shaped fireproof material along line IV-IV from FIG. 3 ;
  • FIG. 5 shows a cross-sectional view of a fireproof material in the form of a kneadable mass.
  • FIG. 1 shows a fireproof material 10 in the form of a tubular section which, in this case, is arranged around a conduit 20 and is formed as a pipe.
  • the fireproof material 10 has a matrix 11 of a plastic material that is shrinkable under the influence of heat.
  • Shrinkable plastic materials of this kind are, for example, polyolefins, fluoropolymers, and elastomers whose molecules are crosslinked, e.g., by radiation polymerization.
  • Inclusions 12 of an active fireproof material e.g., an intumescent, ceramizing or. ablative material, are incorporated in the matrix.
  • inclusions 12 can be, e.g., granular, spherical, rod-shaped, strand-shaped, fibrous, or the like.
  • the dimensions of the inclusions 12 can range from a fine dispersion (the size of dust particles) to one or more millimeters. In the case of strand-shaped or fibrous inclusions 12 , their length corresponds approximately to the axial length of the tubular fireproof material 10 .
  • the tubular portion of fireproof material 10 is shrunk on the conduit 20 by a local heat treatment (e.g., heating to approximately 70° C.).
  • the material of the matrix 11 is shrunk by the heat treatment to approximately 70%-25% of its original dimensions so that the fireproof material now tightly contacts the surface 21 of the conduit 20 .
  • the inclusions e.g., of an intumescent material, swell and squeezes the conduit 20 . This prevents the spread of fire.
  • the fireproof material 10 is formed as strip-shaped flat material.
  • the matrix 11 is again formed of a plastic material which is shrinkable under the influence of heat and in which are incorporated inclusions 12 of active fireproof material, described above.
  • An adhesive layer 13 is arranged at a flat side 14 of the fireproof material 10 .
  • the fireproof material 10 can be fixed at least in a preliminary manner to a conduit by this adhesive layer 13 .
  • the inclusions 12 are strand-shaped in this case and extend approximately parallel to the longitudinal extension of the fireproof material 10 . In the mounted position of the fireproof material 10 , the latter compasses a line 20 analogous to FIG. 2 .
  • the fireproof material 10 can also be formed as a kneadable or deformable mass and has a matrix 11 of a plastic material which is shrinkable when acted upon by heat and which is also elastically deformable. Inclusions 12 of an active fireproof material are again arranged in this matrix 11 as was already described above.
  • the mass according to FIG. 5 can be used in a very flexible manner and can also be applied in very narrow structural spaces.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Building Environments (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Insulated Conductors (AREA)

Abstract

A fire protection material (10) for protecting conduits (20), such as cable channels or pipes, has a matrix (11) which is formed of a plastic material shrinkable under action of heat and into which inclusions (12) of an active fireproof material are embedded.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a fireproof material for protecting conduits such as cable channels or pipes in case of fire.
  • 2. Description of Prior Art
  • Fireproof material of the type mentioned above is used, e.g., in the form of pipe sections, matting, or as strips for shielding conduits such as cables conduits, cable routes, insulated steel pipes, plastic pipes, etc., to squeeze and to completely cut off the latter in case of fire. For this purpose, the cables, conduits, routes, etc. mentioned above are lined or covered in a ring-shaped manner by the fireproof material in the area of a wall lead through.
  • WO 99/18303 A1 discloses a method of protecting from fire of pipes and cable conduits from fire according to which various fireproof materials are arranged in layers around pipes or cable conduits in the area where they pass through a wall. For example, a strip-shaped intumescent material is placed around a pipe conduit initially and a layer of a material that shrinks when acted upon by heat is then arranged around this layer. In the event of fire, this layer of the shrinkable material contracts when heated and reinforces the squeezing of the pipe by the intumescent compound.
  • The known solutions are disadvantageous due to the necessary expenditure on the mounting of the fireproof material, which requires a plurality of work steps.
  • Accordingly, it is the object of the present invention to provide a fireproof material that is simple to mount and has an excellent fire-protection effect in the event of fire.
    • SUMMARY OF THE INVENTION
  • According to the invention, this and other objects of the present invention, which will become apparent hereinafter, are achieved by providing a fireproof material having a matrix of plastic material which can shrink when acted upon by heat and in which inclusions of an active fireproof material are embedded. The shrinkable plastic materials are, e.g., polyolefins, fluoropolymers and elastomers whose molecules are crosslinked, e.g., by radiation polymerization, while as the active fireproof material, e.g., an intumescent, ceramizing or ablative material can be used. This step provides a homogeneous fireproof material which can be arranged at a conduit in only one work step and can be sealingly shrunk over this conduit by heating.
  • It may be advantageous in technical respects of manufacture when the inclusions are strand-shaped so that the fireproof material can be produced by a continuous method, e.g., as strip goods. This strip-shaped fireproof material can then be wrapped around conduits and subsequently sealingly shrunk thereon.
  • Naturally, the inclusions can also be shaped in any other manner, e.g., be made spherical, granular, or rod-shaped.
  • The fireproof material can advantageously be tubular. In this way, it can be pulled directly over a conduit and then shrunk onto it.
  • An adhesive layer can be advantageously applied to a flat side of a strip-shaped fireproof material, and the fireproof material can be preliminary fixed on a conduit by the adhesive layer prior to shrinking.
  • Further, the fireproof material can advantageously also be formed as a ductile or kneadable mass. This mass can be used in a flexible manner also for conduit lead-throughs that are difficult to access and can be pressed into very narrow gaps. By a subsequent heating, the kneadable fireproof material can then be sealingly shrunk over the cable.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Further advantages and features of the invention will become apparent from the following description when read with reference to the drawings. In the drawings:
  • FIG. 1 is a cross-sectional view of a ring-shaped fireproof material according to the present invention, arranged around a conduit;
  • FIG. 2 shows a view similar to that of FIG. 1 with the fireproof being shrunk on the conduit;
  • FIG. 3 shows a cross-sectional view of a strip-shaped fireproof material according to the invention;
  • FIG. 4 shows a cross-sectional view of the strip-shaped fireproof material along line IV-IV from FIG. 3; and
  • FIG. 5 shows a cross-sectional view of a fireproof material in the form of a kneadable mass.
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • FIG. 1 shows a fireproof material 10 in the form of a tubular section which, in this case, is arranged around a conduit 20 and is formed as a pipe. The fireproof material 10 has a matrix 11 of a plastic material that is shrinkable under the influence of heat. Shrinkable plastic materials of this kind are, for example, polyolefins, fluoropolymers, and elastomers whose molecules are crosslinked, e.g., by radiation polymerization. Inclusions 12 of an active fireproof material, e.g., an intumescent, ceramizing or. ablative material, are incorporated in the matrix. Materials of this kind are, e.g., expandable graphite, vermiculite, sodium silicate, chemically intumescent materials (e.g., mixtures of APP, melanin, pentaerytrite). These inclusions 12 can be, e.g., granular, spherical, rod-shaped, strand-shaped, fibrous, or the like. The dimensions of the inclusions 12 can range from a fine dispersion (the size of dust particles) to one or more millimeters. In the case of strand-shaped or fibrous inclusions 12, their length corresponds approximately to the axial length of the tubular fireproof material 10.
  • In FIG. 2, the tubular portion of fireproof material 10 is shrunk on the conduit 20 by a local heat treatment (e.g., heating to approximately 70° C.). The material of the matrix 11 is shrunk by the heat treatment to approximately 70%-25% of its original dimensions so that the fireproof material now tightly contacts the surface 21 of the conduit 20.
  • In case of fire when the material is heated, e.g., to above 100° C., the inclusions, e.g., of an intumescent material, swell and squeezes the conduit 20. This prevents the spread of fire.
  • In FIG. 3, the fireproof material 10 is formed as strip-shaped flat material. The matrix 11 is again formed of a plastic material which is shrinkable under the influence of heat and in which are incorporated inclusions 12 of active fireproof material, described above. An adhesive layer 13 is arranged at a flat side 14 of the fireproof material 10. The fireproof material 10 can be fixed at least in a preliminary manner to a conduit by this adhesive layer 13. As can be seen in FIG. 4, the inclusions 12 are strand-shaped in this case and extend approximately parallel to the longitudinal extension of the fireproof material 10. In the mounted position of the fireproof material 10, the latter compasses a line 20 analogous to FIG. 2.
  • According to FIG. 5, the fireproof material 10 can also be formed as a kneadable or deformable mass and has a matrix 11 of a plastic material which is shrinkable when acted upon by heat and which is also elastically deformable. Inclusions 12 of an active fireproof material are again arranged in this matrix 11 as was already described above.
  • The mass according to FIG. 5 can be used in a very flexible manner and can also be applied in very narrow structural spaces.
  • Though the present invention was shown and described with references to the preferred embodiments, such are merely illustrative of the present invention and are not to be construed as a limitation thereof, and various modifications of the present invention will be apparent to those skilled in the art. It is, therefore, not intended that the present invention be limited to the disclosed embodiments or details thereof, and the present invention includes all variations and/or alternative embodiments within the spirit and scope of the present invention as defined by the appended claims.

Claims (6)

1. A fireproof material for protecting conduits (20) in case of fire, comprising a matrix (11) of a plastic material shrinkable under action of heat; and inclusions (12) of an active fireproof material embedded into the matrix (11).
2. A fireproof material according to claim 1, wherein the inclusions (12) are formed as strands.
3. A fireproof material according to claim 1, wherein the fireproof material has a tubluar shape.
4. A fireproof material according to claim 1, wherein the fireproof material is formed as a strip-shaped flat material.
5. A fireproof material according to claim 4, further comprising an adhesive layer provided on one of flat sides of the strip-shaped flat material.
6. A fireproof material according to claim 1, wherein the fireproof material is formed as a kneadable mass.
US11/128,746 2004-05-18 2005-05-12 Fireproof material Abandoned US20050257460A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004024501.0 2004-05-18
DE102004024501A DE102004024501A1 (en) 2004-05-18 2004-05-18 Fireproof material

Publications (1)

Publication Number Publication Date
US20050257460A1 true US20050257460A1 (en) 2005-11-24

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ID=34939807

Family Applications (1)

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US11/128,746 Abandoned US20050257460A1 (en) 2004-05-18 2005-05-12 Fireproof material

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US (1) US20050257460A1 (en)
EP (1) EP1598589A3 (en)
JP (1) JP2005333798A (en)
DE (1) DE102004024501A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9517369B2 (en) * 2014-08-12 2016-12-13 Stephen Samouhos Fire stop conduit
US20190271416A1 (en) * 2017-02-22 2019-09-05 Hilti Aktiengesellschaft Fire protection element

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ2009707A3 (en) * 2009-10-27 2011-05-04 Kabelovna Kabex A.S. Fire-inhibiting protective wiring tube for cables
JP5576349B2 (en) * 2011-10-31 2014-08-20 シーシーアイ株式会社 Fireproof plugging composite material, fireproof plugging composite built-in fire spread prevention device, and pipe joint or sleeve provided with fireproof plugging composite material

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111569A (en) * 1958-06-20 1963-11-19 Rubenstein David Packaged laminated constructions
US4676025A (en) * 1986-01-02 1987-06-30 Schlegel Corporation Remotely activatable seal
US4756945A (en) * 1985-01-18 1988-07-12 Backer Rod Manufacturing And Supply Company Heat expandable fireproof and flame retardant construction product
US4758003A (en) * 1984-04-05 1988-07-19 Quantum Group, Inc. Method and apparatus for changing physical and chemical properties of materials
US4936064A (en) * 1989-02-16 1990-06-26 Backer Rod Manufacturing And Supply Company Fireproof panel
US20020056242A1 (en) * 2000-08-14 2002-05-16 Arndt Andresen Fire protection sleeve
US20050086823A1 (en) * 2002-02-22 2005-04-28 Suresh Subramonian Macrocellular acoustic foam containing particulate additive
US20060011108A1 (en) * 2004-07-13 2006-01-19 Abu-Isa Ismat A Fire resistant plastic pallet
US7118725B2 (en) * 2001-12-19 2006-10-10 Hilti Aktiengesellschaft Expandable graphite intercalation compounds, method for synthesizing them and their use
US20070148394A1 (en) * 2005-12-23 2007-06-28 Hilti Aktiengesellschaft Flat material for leadthroughs

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2110696B (en) * 1978-11-23 1983-11-16 Raychem Ltd Improvements in or relating to flame retarded claddings
ZA867242B (en) * 1985-09-27 1987-05-27 Dsg Schrumpfschlauch Gmbh Heat shring tubing
EP0332773B1 (en) * 1986-09-19 1993-07-14 Sumitomo Electric Industries Limited Flame retardant heat-shrinkable tube
DE10119132A1 (en) * 2001-04-19 2002-10-24 Hilti Ag Fire protection grommet has closed hose sector inside torus-shaped fabric hose
DE10307433A1 (en) * 2003-02-20 2004-09-02 Murrplastik Systemtechnik Gmbh Identification collar for cables, has boundary walls of collar chamber integrally connected to those of identification chamber, made of different plastics materials

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111569A (en) * 1958-06-20 1963-11-19 Rubenstein David Packaged laminated constructions
US4758003A (en) * 1984-04-05 1988-07-19 Quantum Group, Inc. Method and apparatus for changing physical and chemical properties of materials
US4756945A (en) * 1985-01-18 1988-07-12 Backer Rod Manufacturing And Supply Company Heat expandable fireproof and flame retardant construction product
US4676025A (en) * 1986-01-02 1987-06-30 Schlegel Corporation Remotely activatable seal
US4936064A (en) * 1989-02-16 1990-06-26 Backer Rod Manufacturing And Supply Company Fireproof panel
US20020056242A1 (en) * 2000-08-14 2002-05-16 Arndt Andresen Fire protection sleeve
US7118725B2 (en) * 2001-12-19 2006-10-10 Hilti Aktiengesellschaft Expandable graphite intercalation compounds, method for synthesizing them and their use
US20050086823A1 (en) * 2002-02-22 2005-04-28 Suresh Subramonian Macrocellular acoustic foam containing particulate additive
US20060011108A1 (en) * 2004-07-13 2006-01-19 Abu-Isa Ismat A Fire resistant plastic pallet
US20070148394A1 (en) * 2005-12-23 2007-06-28 Hilti Aktiengesellschaft Flat material for leadthroughs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9517369B2 (en) * 2014-08-12 2016-12-13 Stephen Samouhos Fire stop conduit
US20190271416A1 (en) * 2017-02-22 2019-09-05 Hilti Aktiengesellschaft Fire protection element
US10907751B2 (en) * 2017-02-22 2021-02-02 Hilti Aktiengesellschaft Fire protection element

Also Published As

Publication number Publication date
JP2005333798A (en) 2005-12-02
EP1598589A3 (en) 2006-05-10
EP1598589A2 (en) 2005-11-23
DE102004024501A1 (en) 2005-12-15

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HILTI AKTIENGESELLSCHAFT, LIECHTENSTEIN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SEMLER, RUDOLF;REEL/FRAME:016566/0406

Effective date: 20050429

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

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