EP0799943A1 - Feuerbeständiges Plattenmaterial - Google Patents

Feuerbeständiges Plattenmaterial Download PDF

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Publication number
EP0799943A1
EP0799943A1 EP97200997A EP97200997A EP0799943A1 EP 0799943 A1 EP0799943 A1 EP 0799943A1 EP 97200997 A EP97200997 A EP 97200997A EP 97200997 A EP97200997 A EP 97200997A EP 0799943 A1 EP0799943 A1 EP 0799943A1
Authority
EP
European Patent Office
Prior art keywords
sodium silicate
fireproof
plate material
substance
fire
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Withdrawn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
EP97200997A
Other languages
English (en)
French (fr)
Inventor
Nicolaas Dirk Brouwer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0799943A1 publication Critical patent/EP0799943A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • E04B1/942—Building elements specially adapted therefor slab-shaped

Definitions

  • the invention relates to a fireproof plate material comprising at least two at least substantially parallel panels which enclose a cavity between them, in which cavity a fireproof, or at least fire-inhibiting material is accommodated comprising a solid substance which undergoes at least one phase transition in the temperature range from normal ambient temperature to a temperature prevailing in a fire.
  • Such a plate material is used in particular for the manufacture or shielding of cabinets and other spaces in which flammable substances or valuable goods or data are stored. Examples of these are fireworks, valuable papers, and computer files stored on suitable carriers.
  • the primary function of the plate material here is to retard for as long as is possible any temperature rise within the relevant space resulting from a fire raging outside it.
  • British Patent GB-B-138758 discloses such a plate material provided with two panels where the cavity is provided with a framework into which a powder is sprinkled. Upon heating (for example in the case of fire), the panels will detach themselves from the framework and the powder will expand by foaming, so that the cavity is filled up.
  • the present invention has for its object to provide a plate material of the kind mentioned in the opening paragraph which has an improved fire-inhibiting effect compared with a known plate material of the same thickness.
  • a plate material of the kind mentioned in the opening paragraph is for this purpose characterized in that the fireproof substance comprises a mixture of solid sodium silicate particles and dissolved sodium silicate. It was found that mixing of solid sodium silicate particles with liquid sodium silicate leads to a much higher concentration of sodium silicate than had been possible until now. Owing to this higher concentration, the sodium silicate will not only form a gel upon heating, for example in a fire, but also expand by foaming, which is not possible at lower concentrations. Highly satisfactory results were obtained with this material in practice.
  • the fireproof substance according to the invention comprises a mixture of a solid and a liquid material. The use of a mixture of solid sodium silicate particles and liquid sodium silicate now renders it possible to obtain a fireproof substance which forms a foam in the case of fire and similar circumstances without the addition of other (solid) substances.
  • a preferred embodiment of the plate material according to the invention is characterized in that the sodium silicate is mixed with a compressible filler material.
  • the addition of the compressible filler material renders it possible for the space between the two panels to be completely or substantially completely filled up. Any expansion of the fireproof substance foaming out at an elevated temperature can thus be accommodated by the compressible filler material, so that it is avoided that the plate material becomes seriously deformed during this.
  • a special embodiment of such a filler material is formed by foamed globules which can be added at a comparatively low cost. It is alternatively possible to use a filler material of, for example, perlite or vermiculite.
  • partition walls which may or may not be interconnected and which extend transversely to the two panels.
  • the partition walls in that case keep the contents of the cavity in place before, during, and after said phase transition, so that the fire-inhibiting properties of the plate material are continuously ensured over the entire surface area thereof.
  • a preferred embodiment of the fireproof plate material is characterized in that at least one partition wall of each chamber is provided with an opening. The provision of openings in the partition walls of the chambers achieves that any excess air can escape during the foaming process of the sodium silicate.
  • a preferred embodiment of the fireproof plate material is characterized in that chipboard is used as a basic material for the fireproof plate material. It is achieved thereby that the fireproof plate material is immediately ready for processing, fastening, etc. after its manufacture.
  • the invention also relates to a method of manufacturing a fireproof substance, which method consists in that sodium silicate is dissolved, the dissolved sodium silicate is mixed, and the sodium silicate mixture is dried.
  • a method according to the invention is characterized in that the liquid sodium silicate is mixed with dry sodium silicate during mixing.
  • Sodium silicate is obtained in much higher concentrations in this way than had been possible until now, with the result that the sodium silicate foams out after forming a gel upon heating, for example owing to a fire.
  • the partition walls 5 form part of a coherent framework 25 having a honeycomb structure, cf. Fig. 2, which simplifies its mounting.
  • the framework 25 is made from a cardboard of sufficient strength and is commercially available in the thickness of 20 mm as used here.
  • the cavities 5 of the plate material are thus subdivided into a number of separate chambers 51, 52, 53, etc.
  • each chamber is provided with an opening.
  • a fireproof substance 7 undergoing a phase transition in the temperature range from ambient temperature to a fire temperature is provided in the cavity 5.
  • a mixture of solid sodium silicate particles and liquid sodium silicate mixed with a compressible substance in the form of foamed globules of, for example, perlite or vermiculite has for this purpose been introduced into the chambers 51, 52, 53 in the present case before the second or third panel, as the case may be, is provided thereon.
  • the globules may be made from any suitable material, for example also from polyurethane.
  • the mixture may comprise an adhesive substance (the sodium silicate itself can also provide adhesion) and is adequately wetted so as- to provide a good adhesion to the panels 1, 2, 3, so that it will remain distributed over the entire surface area thereof and will ensure a good fire protection over this entire surface area.
  • Further filler materials may also be added to the mixture, such as in particular vermiculite particles, which promote a weight reduction of the filled panel.
  • a fill is used of approximately 60% mixture of solid sodium silicate particles and liquid sodium silicate (the preparation of which will be discussed below) as the fireproof substance, in accordance with the material of the panels 1, 2, 3, 20% compressible polyurethane globules, and 20% weight-reducing vermiculite globules, all percentages relating to the respective occupied volumes.
  • the fireproof mixture 7 will first become liquid at a certain moment under the influence of the rising temperature and subsequently foam out. This phase transition consumes energy, which leads to an instantaneous drop in temperature and a resulting improved fire resistance within the plate material.
  • the foam which has been formed provides an adequate heat insulation after that.
  • the panel shown here was thus found to be capable in practice of reducing a temperature rise to an acceptable level for a period of two hours at a side of the plate material opposed to a side where a standardized, controlled fire was made to burn.
  • a known plate material filled with rock wool would require a thickness of approximately 200 mm to achieve this, which would lead to a considerable increase in cost.
  • the plate material may be expanded to include more panels, or no more than two panels may be used.
  • the invention offers a plate material having an enhanced fire resistance in all these cases compared with known panels of the same thickness.
  • the provision of openings in the partition walls of the chambers 51, 52, 53 ... achieves that any excess air can escape during foaming of the sodium silicate.
  • the sodium silicate mixture according to the invention is obtained in that sodium silicate in liquid form is mixed with sodium silicate in dry form. The sodium silicate is finally dried.
  • Sodium silicate is obtained in much higher concentrations thereby than had hitherto been possible. Owing to this higher concentration, the sodium silicate will not only form a gel when heated, for example in a fire, but also foam out subsequently, which is not possible at lower concentrations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
  • Laminated Bodies (AREA)
EP97200997A 1996-04-05 1997-04-07 Feuerbeständiges Plattenmaterial Withdrawn EP0799943A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1002806 1996-04-05
NL1002806A NL1002806C2 (nl) 1996-04-05 1996-04-05 Brandwerend plaatmateriaal.

Publications (1)

Publication Number Publication Date
EP0799943A1 true EP0799943A1 (de) 1997-10-08

Family

ID=19762631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97200997A Withdrawn EP0799943A1 (de) 1996-04-05 1997-04-07 Feuerbeständiges Plattenmaterial

Country Status (2)

Country Link
EP (1) EP0799943A1 (de)
NL (1) NL1002806C2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001049372A1 (de) * 1999-12-30 2001-07-12 Adolf Frick Brandschutzeinrichtung
CN114293724A (zh) * 2021-12-21 2022-04-08 江苏中天消防设备有限公司 一种建筑用吸音防火板材

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1387581A (en) * 1971-02-12 1975-03-19 Nat Res Dev Fire-resistant structures containing intumescent material
EP0006525A1 (de) * 1978-06-24 1980-01-09 BASF Aktiengesellschaft Alterungsbeständiges Brandschutzmaterial, Verfahren zur Herstellung desselben und Verwendungen
DE3217260A1 (de) * 1981-07-07 1983-02-10 KNIPSM "Savodproekt", Sofia Zusammensetzung zur herstellung von wasserbestaendigem waermeisolierenden isolationsmaterial auf wasserglas-basis und verfahren zur herstellung des isolationsmaterials

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2405225A1 (fr) * 1977-10-04 1979-05-04 Noirats Sarl Usine Structure de panneau sandwich coupe-feu
CA1258328A (en) * 1986-04-04 1989-08-08 John S. Luckanuck Fire retardant composition

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1387581A (en) * 1971-02-12 1975-03-19 Nat Res Dev Fire-resistant structures containing intumescent material
EP0006525A1 (de) * 1978-06-24 1980-01-09 BASF Aktiengesellschaft Alterungsbeständiges Brandschutzmaterial, Verfahren zur Herstellung desselben und Verwendungen
DE3217260A1 (de) * 1981-07-07 1983-02-10 KNIPSM "Savodproekt", Sofia Zusammensetzung zur herstellung von wasserbestaendigem waermeisolierenden isolationsmaterial auf wasserglas-basis und verfahren zur herstellung des isolationsmaterials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001049372A1 (de) * 1999-12-30 2001-07-12 Adolf Frick Brandschutzeinrichtung
CN114293724A (zh) * 2021-12-21 2022-04-08 江苏中天消防设备有限公司 一种建筑用吸音防火板材

Also Published As

Publication number Publication date
NL1002806C2 (nl) 1997-10-07

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