EP0689573A1 - Composition ignifuge - Google Patents

Composition ignifuge

Info

Publication number
EP0689573A1
EP0689573A1 EP94909981A EP94909981A EP0689573A1 EP 0689573 A1 EP0689573 A1 EP 0689573A1 EP 94909981 A EP94909981 A EP 94909981A EP 94909981 A EP94909981 A EP 94909981A EP 0689573 A1 EP0689573 A1 EP 0689573A1
Authority
EP
European Patent Office
Prior art keywords
composition according
composition
fusible
fire
heat
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.)
Withdrawn
Application number
EP94909981A
Other languages
German (de)
English (en)
Inventor
Arasapillai Nadarajah Ganendran
John 28 Hillcrest Neave
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.)
BTR PLC
Original Assignee
BTR PLC
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 BTR PLC filed Critical BTR PLC
Publication of EP0689573A1 publication Critical patent/EP0689573A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C09K21/02—Inorganic materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/40—Glass
    • 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

  • This invention relates to fire barrier compositions.
  • the invention provides a composition which is capable of forming an advantageous protective barrier against high temperature fires such as burning hydrocarbon oil or gas.
  • composition of the invention is based on a blend of at least one heat-stable solid inorganic material, at least one fusible solid inorganic material, and at least one binder matrix material for the composition ingredients.
  • the heat-stable solid inorganic material preferably should not decompose at temperatures below about 1000°C, more preferably not below about 1600°C. Suitably also it has a low thermal conductivity (K). If it melts below its decomposition temperature, it should have a high melting point, preferably of at least about 400°C.
  • a suitable material is a ceramic material.
  • the heat-stable material is in particulate form, whether as powder (e g grindings) or fibre.
  • the material may be in fabric form when the material lends itself to being produced in that form.
  • particle sizes may be in the range 30 to 200 mesh, especially when the composition is to be processed into sheet form.
  • Preferred heat-stable materials include siliceous materials, especially silicates, for example sodium, calcium, magnesium and aluminium silicates, mullite, asbestos and clays e g calcined clay, and silica flour.
  • silicates for example sodium, calcium, magnesium and aluminium silicates
  • mullite e.g calcined clay
  • silica flour e.g calcined clay
  • An example of a suitable non-siliceous heat-stable material is magnesium
  • a particulate material e g hollow aluminium silicate particles
  • Such particles may be useful to confer lower density on the composition.
  • the fusible solid inorganic material suitably is a material which melts and then re-solidifies, whereby it bonds to or encapsulates the heat-stable material.
  • the fusible material is employed in particulate form.
  • it is employed in fine powder or fibre form and may be of smaller particle size than that of the heat-stable material.
  • it may comprise predominantly particles sized not more than about 200 microns and may have a mean particle size in the range 2 to 70 microns.
  • the fusible inorganic material melts or commences melting at a temperature of at least about 200°C and suitably it re-solidifies or commences re- solidification at a temperature of, for example, at least about 600°C.
  • the material may melt at temperatures in the range of about 200°C to 900°C and may re-solidify at temperatures in the range of about 600°C to 1600°C.
  • the fusion properties of the fusible material are related to the thermal stability of the binder matrix material employed in the composition.
  • the fusible material should at least commence to melt at a temperature not higher than that at which the binding performance of the matrix material becomes decreased to a level at which it cannot hold the composition ingredients coherently. Accordingly, for instance, when the binder matrix material is an elastomer which becomes effectively degraded or carbonised at about 400°C, the fusible material should become significantly melted at or below that temperature.
  • a preferred fusible material comprises glass particles.
  • the fusible material comprises a mixture of particles having different melting points, suitably commencing at about 200°C.
  • Such a particle mixture may melt progressively over a temperature range of about 200°C to 900°C, for instance about 350°C to 700°C.
  • the material then re-solidifies above the melting temperature. For instance, re-solidification may commence at a temperature above about 700°C or above about 900°C to form a crystalline solid.
  • the glassy re-solidified material forms a bond with the heat-stable inorganic material and produces a hard solid fire-barrier compound which is stable at high temperatures such as about 1600°C and which remains solid during subsequent cooling without suffering reversal to particulate form and without significant crack formation.
  • suitable fusible glass particles are those available under the trade name "Ceepree” ex ICI/Brunner Mond & Company.
  • fusible inorganic materials examples include alumina trihydrate, magnesia trihydrate, zinc hydroxy stannate, hydrated sodium silicate, expandable graphite and mica such as vermiculite.
  • alumina trihydrate particles may be employed together with or instead of fusible glass particles. It is found that, at temperatures in the range of about 300°C to 600°C, the alumina trihydrate melts by losing water of crystallisation and, at temperatures up to about 1200°C, re-solidifies to bond the heat-stable material into a stable hard fire-barrier compound. This effect may be promoted by the presence of a substance such as zinc hydroxy stannate, for instance about 15 to 20 parts by weight per 100 parts by weight of alumina trihydrate. By employment of such a substance, the temperature at which the solid fire-barrier compound is produced may be lowered, for instance to about 800°C or less.
  • the proportions of heat-stable and fusible inorganic materials in the composition preferably should be greater than those at which the composition would produce a friable non-bound compound when subjected to fire heat and less than those at which the composition would be unprocessable or impractically difficult to process.
  • these materials are present in a preponderant proportion in relation to the amount of binder matrix material. They may constitute at least 50%, preferably at least 60%, by weight of the composition.
  • the composition may contain from about 25% to about 35% of fusible material such as "Ceepree" and from about 30% to about 50% of one or more heat-stable materials.
  • the binder matrix material holds the other composition ingredients in blended form, preferably as a substantially homogenous blend, and facilitates processing and fabrication of the composition.
  • the binder material is an organic polymer material.
  • a preferred binder material is an elastomeric material, which may be natural or synthetic, cured or uncured.
  • the elastomeric material has good tack and flexibility over a wide temperature range such as from -35°C to +120°C.
  • suitable elastomers are polychloroprene rubbers (neoprenes), chlorosulphonated polyethylene (e g "Hypalon") , and blends of polychloroprene with EPDM.
  • One preferred elastomer is polychloroprene rubber having low-temperature flexibility and crystallinity, such as the Neoprene W grades.
  • the composition may contain from about 20% to about 30% by weight of elastomer.
  • a non-elastomeric binder material may be employed, for instance a plastics or resin. If a flexible fire barrier composition is not required, the binder material may be a thermosetting or otherwise hardenable plastics or resin. Such a binder material may be converted into rigid set form either before a fire barrier comprising the composition is utilised or by the effect of the fire heat on the fire barrier in an actual fire situation.
  • the composition may contain a plasticizer for the elastomer.
  • a plasticizer may enable the composition to contain a higher loading of solid inorganic materials and/or may confer higher flexibility without detriment to fire barrier properties, and/or it may aid processability of the composition.
  • a plasticizer may be employed in place of at least a proportion of the elastomer.
  • suitable plasticizers are those of the phthalate, phosphate and halogen-containing types. Improved flame-retardance and/or self-extinguishing properties may be conferred on the composition by employing one or more plasticizers of the halogen-containing or phosphate type.
  • plasticizer may be present in an amount of up to about 5% by weight of the composition, although a much greater proportion of plasticizer may be employed if desired.
  • the composition may contain one or more other ingredients to confer desired properties without significant detriment to the required fire barrier properties.
  • additional ingredients include antidegradants e g antioxidants, and pigments e g carbon black.
  • the composition may contain up to about 2% by weight of antidegradant(s) and/or up to about 1% by weight of pigment(s).
  • the composition may be prepared by conventional blending methods.
  • the binder material is an elastomeric material
  • conventional high-shear milling may be employed, followed by calendering if required.
  • the invention enables the provision of a flexible fire-barrier composition which acts as an environmental barrier and remains flexible for ease of fabrication, assembly and replacement, over a wide atmospheric temperature range of about -35°C to +120°C.
  • the composition functions as an advantageous fire barrier by undergoing the following changes as the temperature increases: the binder matrix material commences to carbonise or otherwise deteriorate; the fusible inorganic material fuses sufficiently to bond the heat-stable inorganic material in coherence before the binding effect of the matrix material has completely diminished; and then the fusible inorganic material re-solidifies to provide a solid, hard, insulating, fire-barrier compound.
  • the composition provides a fire barrier which is effective under intense fire situations up to temperatures such as about 1600°C and which maintains its fire barrier effectiveness on cooling to normal temperatures.
  • the composition may be formed into a sheet or other shape as appropriate for the required fire barrier application or it may be applied by coating directly onto a surface to be fire protected. If desired, it may be made into panels to be assembled together for covering an article or space to be protected. The panels may be secured together, such as in abutment, for instance by means of fire-resistant thread e g filament comprising stainless steel.
  • the composition may be employed as a component of a composite material.
  • the composition may be formed into a composite with one or more fire- resistant fibrous components which may provide reinforcement for handling and fabrication.
  • One form of such a composition is a laminate of the composition with fire-resistant fabric, for example a layer of the composition having a fire-resistant open- or closed- weave fabric sheet attached to one or each face.
  • the composition may be attached to a fabric sheet by, for example, calendering or adhesive bonding.
  • One advantageous fabric is a high melting point glass cloth. When such a cloth is located on the fire-exposure side of the composition it may protect against premature degradation of the binder matrix material.
  • the composition may be formed into a composite with one or more heat- insulation components, for instance as a laminate of the composition (reinforced or not) with one or more layers of heat-insulation material.
  • a laminate normally should be oriented so that the composition layer is nearer the fire source.
  • composition thickness may be influenced by physical factors such as the tensile strength required to resist the force of a jet fire and/or the practical weight and thickness limitations for ease of fabrication and assembly of the fire barrier.
  • An example of an efficient fire barrier thickness of the composition is about 3 mm.
  • the composition is capable of providing fire barriers for intense fire situations, for instance in jet fire situations which may occur in the oil and petroleum industries.
  • the composition may be formed into protective covers for valve actuators on oil rigs. If required, a heat-insulation material may be located between the cover and the surface to be protected.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Building Environments (AREA)
  • Fireproofing Substances (AREA)

Abstract

Une composition ignifuge conçue pour lutter contre des feux dégageant une température élevée est constituée par un mélange de matériaux inorganiques solides et thermiquement stables, de matériaux inorganiques solides et fusibles, ainsi que par un matériau de matrice liante. Cette composition, quand elle est soumise à des températures d'incendie, subit des modifications consécutives sans augmentation de la température, à savoir: le matériau de matrice liante commence à se carboniser ou à se dégrader; le matériau inorganique fusible fond suffisamment pour s'agglomérer au matériau inorganique thermiquement stable avant diminution complète de l'effet liant du matériau de la matrice; enfin, le matériau inorganique fusible redevient solide, de façon à constituer un composé ignifuge, solide, dur et isolant.
EP94909981A 1993-03-18 1994-03-17 Composition ignifuge Withdrawn EP0689573A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9305546 1993-03-18
GB9305546A GB2277091B (en) 1993-03-18 1993-03-18 Fire barrier composition
PCT/GB1994/000550 WO1994021748A1 (fr) 1993-03-18 1994-03-17 Composition ignifuge

Publications (1)

Publication Number Publication Date
EP0689573A1 true EP0689573A1 (fr) 1996-01-03

Family

ID=10732257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94909981A Withdrawn EP0689573A1 (fr) 1993-03-18 1994-03-17 Composition ignifuge

Country Status (4)

Country Link
EP (1) EP0689573A1 (fr)
AU (1) AU6261194A (fr)
GB (1) GB2277091B (fr)
WO (1) WO1994021748A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140139312A1 (en) * 2012-11-19 2014-05-22 Electro-Motive Diesel, Inc. Insulation resistant to dry band arcing

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6153674A (en) * 1998-01-30 2000-11-28 3M Innovative Properties Company Fire barrier material
CN101193835A (zh) * 2005-05-31 2008-06-04 先进玻璃陶瓷公司 绝热复合材料及其制备方法
FR3049029B1 (fr) 2016-03-18 2018-03-09 Hutchinson Dispositif antivibratoire tenant au feu destine a une application ferroviaire

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4289680A (en) * 1974-12-09 1981-09-15 Ishikawa Giken Kogyo Kabushiki Kaisha Heat resistant and fire-proof synthetic resin material containing inorganic substances and process of producing same
US4130538A (en) * 1977-09-19 1978-12-19 Vitrofil Corporation Preparation of smoke and flame retardant resinous compositions
US4273879A (en) * 1978-03-31 1981-06-16 Minnesota Mining And Manufacturing Company Intumescent fire retardant composites
US4327001A (en) * 1980-07-01 1982-04-27 Gulf & Western Manufacturing Company Low smoke polyolefin jacket composition for electrical wire
JPH0745595B2 (ja) * 1986-08-09 1995-05-17 大日精化工業株式会社 ノンハロゲン難燃性熱可塑性合成樹脂組成物
DE3882070T2 (de) * 1987-04-11 1993-10-28 Brunner Mond & Co Ltd Feuerhemmende Zusammensetzungen.
US4923729A (en) * 1987-07-16 1990-05-08 Springs Industries, Inc. Coated fire barriers for upholstered furnishings
US4952615A (en) * 1988-05-13 1990-08-28 Minnesota Mining And Manufacturing Company Compressible fireproof seal
DE4135678A1 (de) * 1991-10-30 1993-05-06 Chemie Linz (Deutschland) Gmbh, 6200 Wiesbaden, De Thermisch expandierbare brandschutzmasse
DE4142903A1 (de) * 1991-12-24 1993-07-01 Gruenau Gmbh Chem Fab Brandschutzmasse und ihre verwendung
EP0572763B1 (fr) * 1992-06-03 1996-10-02 Asahi Glass Company Ltd. Composition pour moulage
GB2268497B (en) * 1992-07-08 1995-10-25 Ferodo Caernarfon Ltd Fire-retardant elastomer material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9421748A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140139312A1 (en) * 2012-11-19 2014-05-22 Electro-Motive Diesel, Inc. Insulation resistant to dry band arcing

Also Published As

Publication number Publication date
WO1994021748A1 (fr) 1994-09-29
GB2277091A (en) 1994-10-19
GB2277091B (en) 1997-04-16
GB9305546D0 (en) 1993-05-05
AU6261194A (en) 1994-10-11

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