EP0958330A1 - Agent de protection contre les incendies pour panneaux en copeaux ou en fibres - Google Patents

Agent de protection contre les incendies pour panneaux en copeaux ou en fibres

Info

Publication number
EP0958330A1
EP0958330A1 EP97925009A EP97925009A EP0958330A1 EP 0958330 A1 EP0958330 A1 EP 0958330A1 EP 97925009 A EP97925009 A EP 97925009A EP 97925009 A EP97925009 A EP 97925009A EP 0958330 A1 EP0958330 A1 EP 0958330A1
Authority
EP
European Patent Office
Prior art keywords
parts
weight
fibers
chips
protection agent
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Withdrawn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
EP97925009A
Other languages
German (de)
English (en)
Inventor
Herbert G. Nopper
Hubert F. Schmidt
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.)
Sud-West-Chemie GmbH
Original Assignee
Sud-West-Chemie GmbH
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 Sud-West-Chemie GmbH filed Critical Sud-West-Chemie GmbH
Publication of EP0958330A1 publication Critical patent/EP0958330A1/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Withdrawn legal-status Critical Current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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0028—Liquid extinguishing substances
    • A62D1/0035—Aqueous solutions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N9/00—Arrangements for fireproofing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K2240/00—Purpose of the treatment
    • B27K2240/30—Fireproofing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B27K3/163—Compounds of boron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B27K3/32—Mixtures of different inorganic impregnating agents

Definitions

  • the invention relates to a fire protection agent for boards or molded parts made of chips or fibers, which were obtained from wood or components of annual plants, and to such boards and molded parts containing such a fire protection agent.
  • the invention further relates to a method for fire-resistant equipping of such plates or molded parts.
  • Sheets or molded parts of the type mentioned are generally highly flammable. Due to their material properties, however, they are used in a variety of ways as a material, for example in furniture construction, in the interior construction of buildings and in motor vehicles. In many possible uses, however, the easy flammability of the chipboard or fiberboard and molded parts, which results from the easy flammability of the organic raw materials used, interferes. Especially in the construction industry, for safety reasons, efforts are being made to use only flame-retardant or fire-resistant materials.
  • the invention is therefore based on the object of proposing a fire protection agent with which plates or molded parts made of chips or fibers, which are made of Wood or components of annual plants have been obtained, can be made fire-resistant. Furthermore, it is an object of the invention to provide panels and molded parts of the type mentioned which are fire-resistant or highly fire-resistant and to propose a method for fire-resistant finishing of panels or molded parts of the type mentioned.
  • the proposed fire protection agent must be compatible with the usual binders for gluing the chips or fibers and must not develop smoke gases harmful to health under the influence of flames.
  • This object is achieved according to the invention with a fire protection agent which contains 65 to 85, preferably 74 parts by weight of ammonium sulfate, 10 to 25, preferably 19 parts by weight of borax and 4 to 10, preferably 7 parts by weight of trisodium phosphate.
  • the sheets and moldings proposed according to the invention contain this fire protection agent.
  • the method according to the invention for the fire-resistant finishing of panels or molded parts of the type mentioned at the beginning comprises the following method steps:
  • the impregnated chips or fibers are dried to a moisture content of approximately 1% to approximately 12%, preferably 1 to 4%,
  • the impregnated and dried chips or fibers are glued with a binder
  • the proposed fire protection agent is a mixture of inorganic salts which contain no chlorides and are not toxic. It is compatible with all known condensation and polymerization resins, for example urea, melamine and phenol formaldehyde resins, epoxy resins, novolak resins, PMDI resins, etc. In addition, it does not cause harmful gases to evaporate from the finished plate or the finished one Molding.
  • the ammonium sulfate contained in the proposed fire protection agent promotes the surface charring of cellulose through the formation of sulfuric acid.
  • the trisodium phosphate also contained in the fire protection agent decomposes from 75 ° C to NaOH and P 2 0 5 ; it has emulsifying, water softening and buffering properties.
  • a fire protection agent is obtained with which plates or molded parts made of chips or fibers, which have been obtained from wood or components of annual plants, can be made fire-resistant.
  • An advantageous development of the fire protection agent according to the invention is that an additional 0.5 to 2 parts by weight, preferably 1 part by weight, of sodium metasilicate is added.
  • Sodium metasilicate has a water-softening effect, has a wetting agent effect and a disinfectant effect and releases water when heated. If it is added to a solution of the fire protection agent, it serves as a wetting agent and thus promotes the wetting of the chips or fibers with the fire protection agent.
  • An advantageous side effect is the fungicidal and insecticidal properties that the fire retardant obtains by adding the sodium metasilicate.
  • the proposed fire protection agent is best used when it is in an aqueous solution, the solution concentration being 20 to 50%, preferably 30 to 35%.
  • the chips or fibers can be impregnated with the fire protection agent and thus impregnated even before being instructed and pressed into sheets or molded parts.
  • This fire protection agent can comprise ammonium sulfate, borax and trisodium phosphate in the mixture ratios indicated above or, as an advantageous further development, additionally contain sodium metasilicate.
  • fire-resistant plates or molded parts are produced from chips or fibers using the method described in claim 11.
  • a solution of the proposed fire protection agent is therefore used to pre-impregnate the chips or fibers with which the chips or fibers are impregnated.
  • the fire protection agent can contain the salt mixture specified in claim 1 or the salt mixture described in claim 2.
  • the fire protection agent is preferably present in an aqueous solution with a concentration of 20 to 50%, preferably 30 to 35%.
  • the chips or fibers can be pre-impregnated with the fire protection agent in an immersion bath or by injecting the fire protection agent into a continuous mixer or a mixing screw.
  • the density of the fire protection agent solution used is preferably approximately 1.2 g / cm 3 , it having a pH in the slightly alkaline range, preferably approximately 8.5.
  • the impregnated chips or fibers To glue the chips or fibers, these must usually not exceed a moisture content of approx. 12%. Therefore, after impregnation with an aqueous fire protection agent solution, it is necessary to dry the impregnated chips or fibers. After drying, the impregnated chips or fibers have a pH of approx. 3.5 to 4.5.
  • Urea or melamine resins are preferably used for gluing the chips or fibers impregnated with the fire protection agent. This offers the great advantage that the ammonium sulfate contained in the fire retardant dissociates during the pressing of the chips or fibers due to the resulting heating and acts as a hardener for the binder. The addition of a separate hardening substance is therefore unnecessary.
  • PMDI resins are preferably used as binders.
  • the result of the method according to the invention consists of plates or molded parts made of chips or fibers which are fire-resistant to highly fire-resistant, without it being necessary to apply an additional flame-retardant coating.
  • the invention is explained further below using two examples.
  • Pine wood chips were obtained in a known manner by machining round wood, so that their length was 5 to 15 mm, their width 2 to 4 mm and their thickness 0.2 to 0.5 mm. These chips were pre-dried to a moisture content of approximately 30%.
  • a fire protection agent solution of the following composition was added to the predried chips in a continuous mixer.
  • the ratio between the mass of the added fire protection agent solution and the dry mass of the chips was 0.6.
  • the impregnated chip was then dried in a drum dryer to a residual moisture of approx. 1% and metered into a glue mixer.
  • An aqueous binder of the following composition was added to the impregnated chip in the glue mixer.
  • the dried, impregnated chip had a pH of 3.5 to 4 and the added fire retardant thus acted as a hardener when pressed.
  • the ratio between the mass of the aqueous binder and the mass of the dried, impregnated chip was approximately 0.2.
  • the glued chips were sprinkled into a fleece and pressed into a particle board for 3.4 minutes at a temperature of 180 ° C. with a pressing time factor of 10 sec / mm.
  • the chipboard produced in this way had the following parameters:
  • Thickness 20.4 mm
  • the finished chipboard can be used as a furniture board in dry and damp rooms as well as outdoors according to DIN standards 68761 (parts 1 and 4), 68762, 68763 and 68800.
  • the fire-resistant equipment of the chipboard was tested by pointing the full flame of a Bunsen burner at a distance of 13.5 cm to the surface of the board, whereby the temperature was between 800 ° C and 1000 ° C. A flame treatment of 5 minutes could not cause the particle board to ignite. Only a surface charring was found; the smoke development was extremely low.
  • the chipboard met the requirements of DIN standard 4102.
  • Wheat straw was chopped up to a length of 4 to 8 mm, a width of 0.5 to 2 mm and a thickness of about 0.15 mm. These straw fibers were mixed in a mixing screw with a fire protection agent solution of the following composition:
  • the impregnated straw fibers were then freed of excess fire protection agent solution in a dewatering screw and then dried to a residual moisture content of approximately 4%.
  • the impregnated and glued straw fibers were sprinkled into a fleece, heated in a preheating station to a core temperature of approx. 60 ° C. and then for 4.4 minutes, at a temperature of 200 ° C. and with a pressing time factor of 15 sec / mm, pressed into a fiberboard.
  • the finished fiberboard had the following parameters:
  • Thickness 17.5 mm
  • This fiberboard was also exposed to the flame of a Bunsen burner at a distance of 13.5 cm, so that a temperature between 800 ° C. and 1000 ° C. resulted on the surface of the plate. After a flaming time of 5 minutes, the plate experienced no change except for surface charring that developed without flame formation. There was only very little smoke development.
  • the DIN standard 4102 was also met.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Fireproofing Substances (AREA)

Abstract

L'invention concerne un agent de protection contre les incendies permettant de conférer des propriétés ignifuges à des panneaux ou à des pièces moulées en copeaux ou en fibres, d'origine ligneuse ou provenant de plantes annuelles. Cet agent de protection contre les incendies contient entre 65 et 85, de préférence 74 parties en poids de sulfate d'ammonium, entre 10 et 25, de préférence 19 parties en poids de borax et entre 4 et 10, de préférence 7 parties en poids de phosphate trisodique. Il est possible d'ajouter au mélange entre 0,5 et 2 parties en poids, de préférence 1, de métasilicate sodique. L'invention concerne en outre un procédé permettant de rendre de tels panneaux ou de telles pièces moulées ignifuges. Selon ce procédé, les copeaux ou les fibres sont d'abord imprégnés avec une solution de l'agent de protection contre les incendies proposé, puis sont séchés jusqu'à ce que leur teneur en humidité soit comprise entre approximativement 1 et approximativement 12 %, de préférence entre 1 et 4 %, avant d'être encollés avec un liant, d'être assemblés pour former un non-tissé obtenu par compression, puis pour finir, d'être comprimés pour former des panneaux ou des pièces moulées.
EP97925009A 1996-05-30 1997-05-28 Agent de protection contre les incendies pour panneaux en copeaux ou en fibres Withdrawn EP0958330A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1996121606 DE19621606A1 (de) 1996-05-30 1996-05-30 Brandschutzmittel für Platten oder Formteile aus Spänen oder Fasern und Verfahren zum feuerbeständigen Ausrüsten von solchen Platten oder Formteilen
DE19621606 1996-05-30
PCT/EP1997/002780 WO1997046635A1 (fr) 1996-05-30 1997-05-28 Agent de protection contre les incendies pour panneaux en copeaux ou en fibres

Publications (1)

Publication Number Publication Date
EP0958330A1 true EP0958330A1 (fr) 1999-11-24

Family

ID=7795619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97925009A Withdrawn EP0958330A1 (fr) 1996-05-30 1997-05-28 Agent de protection contre les incendies pour panneaux en copeaux ou en fibres

Country Status (6)

Country Link
EP (1) EP0958330A1 (fr)
AU (1) AU3030197A (fr)
BR (1) BR9709375A (fr)
CA (1) CA2256398A1 (fr)
DE (1) DE19621606A1 (fr)
WO (1) WO1997046635A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2303870A1 (fr) * 1997-09-18 1999-03-25 Huttenes-Albertus Chemische Werke Gmbh Procede de production de pieces moulees, piece moulee et installation permettant de mettre en oeuvre ce procede
DE10139128A1 (de) * 2001-08-09 2003-02-27 Herbert Georg Nopper Vorrichtung und Verfahren zur Vakuumimprägnierung
DE10222955C1 (de) * 2002-05-24 2003-08-14 Fraunhofer Ges Forschung Verfahren zur Herstellung von OSB-Platten
SI2663686T1 (sl) 2011-01-13 2020-08-31 Blmh Techologies Inc. Postopek za tvorjenje ognjevzdržnega izdelka iz celuloze in pripadajoča aparatura
KR20140032384A (ko) 2011-04-20 2014-03-14 존 그리엠 내화성의 배향형 스트랜드 보드 및 그 제조
CN104118016B (zh) * 2014-07-23 2016-05-04 连云港保丽森实业有限公司 一种环保型无机阻燃复合纤维板及其生产方法

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
DE1215357B (de) * 1958-02-11 1966-04-28 August Moralt Fa Verwendung von Flammschutzmittel-Zubereitungen zur Impraegnierung von Holzspaenen zur Herstellung schwer entflammbarer Holzspanformkoerper
CA997263A (en) * 1973-05-02 1976-09-21 Champion International Corporation Fire retardant particleboard and process for its manufacture
CA1057184A (fr) * 1974-07-08 1979-06-26 Robert P. Coyle Panneau refractaire inedit a base de particules et methode speciale de fabrication
FR2406659A1 (fr) * 1977-10-24 1979-05-18 Pont A Mousson Composition intumescente moulable pour dispositif coupe-feu
SE7904708L (sv) * 1978-06-16 1979-12-17 Tjernberg Bo Otto Erland Sett att gora ett cellulosahaltigt material brandherdigt
JPS5580747A (en) * 1978-12-08 1980-06-18 Yoshitaka Masuda Blast furnace slag type coating material*its manufacture and use
DE3144773A1 (de) * 1981-11-11 1983-05-19 Chemische Fabrik Kalk GmbH, 5000 Köln Verfahren zur herstellung nichtbrennbarer, beschichteter holzspanformkoerper
DE3520780A1 (de) * 1984-09-06 1986-03-13 Murillo Contreras, Jesús, México Brandhemmendes mittel
CN1031494C (zh) * 1994-01-08 1996-04-10 谭永良 木(竹)材、胶合板阻燃防腐剂

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9746635A1 *

Also Published As

Publication number Publication date
AU3030197A (en) 1998-01-05
CA2256398A1 (fr) 1997-12-11
BR9709375A (pt) 2000-01-11
DE19621606A1 (de) 1997-12-04
WO1997046635A1 (fr) 1997-12-11

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