EP1249547A2 - Verfahren zur Herstellung eines Brandschutz-Bauelementes - Google Patents
Verfahren zur Herstellung eines Brandschutz-Bauelementes Download PDFInfo
- Publication number
- EP1249547A2 EP1249547A2 EP02004086A EP02004086A EP1249547A2 EP 1249547 A2 EP1249547 A2 EP 1249547A2 EP 02004086 A EP02004086 A EP 02004086A EP 02004086 A EP02004086 A EP 02004086A EP 1249547 A2 EP1249547 A2 EP 1249547A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- wood wool
- wool fibers
- impregnated
- binder
- weight
- 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- Withdrawn
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Classifications
-
- 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
Definitions
- the invention relates to a method for manufacturing a component of fire protection class A2 (according to DIN 4102 and ISO 1182), based on a lightweight component from irregularly three-dimensionally distributed as far as possible raw, i.e. untreated wood wool fibers. Free rooms between the wood wool fibers usually make at least 50% by volume, often 80% by volume and more of the total Lightweight construction element.
- the terms “lightweight component” and “component” refer to any type of molded product, for example a plate.
- a “lightweight component” differs from another component in particular by its relatively low bulk density (usually up to 350 kg / m 3 , according to DIN 1101 to at least 570 kg / m 3 ), due to a considerable volume of free space between the solid parts of the component.
- Wood wool lightweight boards have long been known under the trade name "HERAKLITH”.
- the wood wool fibers usually have a length of more than 8 cm, a width of 1 to 6 mm and a thickness of 0.2 to 0.5 mm.
- the individual wood fibers are characterized by a considerable open porosity (so-called cells).
- the brittle wood wool fibers which have an irregular geometry, are distributed irregularly within the lightweight construction element in the form of an open-pore, three-dimensional framework and are connected to one another at least in sections by a binder, for example a magnesite binder.
- DIN 4102 divides such components into A - non-combustible building materials - with subclasses A1 - substances that are not combustible at all, and A2 - substances that are only slightly combustible - but do not continue to fire.
- DIN 4102 is further subdivided into B - flammable materials - whereby this class is again divided into B1 - flame retardant building materials -, B2 - normally flammable building materials - and B3 - easily flammable building materials -.
- the known wood wool lightweight board described above is classified in class B1.
- the aim of the present invention is to based on wood wool lightweight construction elements wood wool construction elements to provide an elevated Create fire protection and in class A2 according to DIN 4102 / ISO 1198 can be classified.
- the invention is based on the following finding:
- the invention sees a multi-stage Process which avoids the disadvantages mentioned, just like ammonia outgassing that occurs during the reaction an impregnating agent with a binder based Magnesium hydroxide can arise.
- the invention uses the outlined properties of raw wood wool fibers, by using at least one liquid Flame retardants are at least partially impregnated. Impregnation means that the liquid Flame retardant in the named cells (open pores) and / or superficial sack pores of the wood wool fibers is filled. For example, an aqueous Flame retardants are used. After evaporation the fire retardant remains in the water Form in the cavities of the wood fiber cells.
- the flame retardant can be used as an example Magnesium sulfate, also in combination with urea, consist. Both substances can be easily dissolved in water.
- Magnesium sulfate and urea as possible as one fractional, i.e. staggered, impregnation (Impregnation) with magnesium sulfate and urea.
- solutions with urea and Magnesium sulfate concentrations 10 wt .-% to to the solubility limit of approx. 30% by weight and use.
- the concentrations are corresponding higher and are for urea or magnesium sulfate each up to 60 wt .-%.
- the advantage of fractional Impregnation lies in the possibility of at least one provide aqueous solution in higher concentration. It is advantageous when using Magnesium sulfate and urea are both substances equal mass proportions (concentration amounts) for To make available, for example, related to 100 parts by weight of flame retardant, 40 to 60 Parts by weight of magnesium sulfate and 60 to 40 parts by weight Urea, which also identifies identical proportions.
- Wood wool fibers of the lightweight element at least partly with an inorganic binder coated.
- Coating means that the Binder in particular on the surface Wood wool fiber is applied so Contact / binding points between the individual wood fibers to get that make the molding stable.
- this can take the form of a dry binder, for example a powder prepared binder.
- a dry binder for example a powder prepared binder.
- Advantage is that no additional water is needed.
- the dry one Binder gets in contact with the still moist Surface of the wood wool fibers, previously impregnated were made into a suspension.
- a possible binder is magnesium oxide, which is in contact with water converts to magnesium hydroxide and in the contact area to the at least one already in or flame retardants on the wood fiber, for example, magnesium sulfate.
- magnesium sulfate fulfills the role of a reaction partner in Setting of the magnesium hydroxide.
- Another kind of Binder coating is done by entering a Binder foam in the wood wool frame.
- Binder made from a mixture of magnesium oxide and Calcium hydroxide.
- the importance of calcium hydroxide will explained in more detail using the third process stage.
- Water glass fulfills two functions. It leads to one, as a kind of second binder, to one Strength increase, and also has another fire retardant properties, so one Fire protection effect.
- the evenly distributed Calcium hydroxide ensures that water glass on everyone Place in the amount required for the precipitation reaction is absorbed and so does the water glass statistically about the volume of the lightweight element distributed. All in all, the calcium hydroxide also helps to an increased water glass intake and thus overall to improved fire protection behavior.
- the at least one Flame retardants in an amount of 20 to 250 wt .-%, based on the weight of the non-impregnated Wood wool fibers used. Quantities from 30 to 100 % By weight is often sufficient. It can be relative high percentage solutions are used, for example a 30 to 60% urea solution.
- the amount of binder may be 150 in one embodiment to 300 wt .-%, based on the weight of not impregnated wood wool fibers. Proportions of 175 to 260% by weight is often sufficient.
- the water glass portion will be based, among other things, on the amount of calcium hydroxide present and will usually be between 10 and 200% by weight, based on the non-impregnated wood wool fibers.
- a ratio of water glass / raw wood wool fibers between 0.2 and 1.8 is usually sufficient and is also dependent on the density of the flooded product. The denser the product, the more water glass is needed. For example, 20 to 160 kg / m 3 of water glass are used for one cubic meter of total volume of the component.
- the ratio Ca (OH) 2 to the raw wood wool is usually between 0.05 and 1.
- a ratio 0.3 and 0.6 is usually sufficient.
- a lightweight structural element in the form of a wood wool building board produced by the method according to the invention is shown in sections and in a highly schematic manner. In its basic structure, it does not differ from known wood wool lightweight panels. This is particularly so because, for example, the flame retardant is macroscopically invisible in the wood wool cells.
- the building board has a bulk density of approximately 500 kg / m 3 and consists of wood wool fibers with a length of 8 to 15 cm, a width of 3 to 6 mm and a thickness of 0.2 to 0.5 mm.
- the volume fraction of "air" between the wood wool fibers is approximately 80% (within the external dimensions of the Plate).
- the originally prefabricated wood wool lightweight board from raw wood wool fibers with a Flame retardant made from magnesium sulfate and urea impregnated, then with a powder Binder based on magnesium oxide and calcium hydroxide coated and finally with a liquid water glass flooded and then dried.
- a generally applicable impregnation process for this is: First impregnation of the wood wool fibers with a 30 to 60% urea solution to achieve a Solids content of urea on the wood wool fibers between 100 and 200% by weight. Subsequent "rinsing" (Impregnation) with a 25% magnesium sulfate solution, where the magnesium sulfate content, based on the Wood wool fibers is between 10 and 40 wt .-%.
- Every wood fiber has a kind Cell structure with a significant amount of open Porosity. Individual of these cells accessible from the outside are symbolized with the reference number 12.
- the flame retardant has at the Impregnation treatment not only on the Surfaces of wood wool fibers 10 deposited, but also on the walls of the superficial sac pores as well of the open pores (cells) 12 inside the Wood wool fibers.
- the binder and the water glass are against it predominantly on the surface area of the wood wool fibers 10.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Building Environments (AREA)
Abstract
Description
Claims (8)
- Verfahren zur Herstellung eines Bauelementes der Brandschutzklasse A2, ausgehend von einem Leichtbauelement aus unregelmäßig dreidimensional verteilten rohen Holzwollefasern mit folgenden Schritten:in einem ersten Schritt werden die Holzwollefasern zumindest teilweise mit mindestens einem flüssigen Flammschutzmittel imprägniert,anschließend werden die imprägnierten Holzwollefasern zumindest teilweise mit einem anorganischen Bindemittel beschichtet,in einem dritten Schritt wird das so vorbehandelte Leichtbauelement mit flüssigem Wasserglas geflutet,abschließend wird das Leichtbauelement getrocknet.
- Verfahren nach Anspruch 1, bei dem die Holzwollefasern mit mindestens einem Flammschutzmittel aus der Gruppe Magnesiumsulfat, Harnstoff, Kaliumhydrogencarbonat, Aluminiumhydroxid, Natriumhydrogencarbonat, Natriumcarbonat und Kaliumsulfat imprägniert werden.
- Verfahren nach Anspruch 1, bei dem die Holzwollefasern mit einem Flammschutzmittel auf Basis einer wässrigen Mischung aus Magnesiumsulfat und Harnstoff imprägniert werden.
- Verfahren nach Anspruch 1, bei dem die imprägnierten Holzwollefasern mit einem Bindemittel auf Basis Magnesiumoxid, Calciumhydroxid oder einer Mischung daraus beschichtet werden.
- Verfahren nach Anspruch 1, bei dem das Bindemittel als Pulver auf die noch feuchten imprägnierten Holzwollefasern aufgetragen wird.
- Verfahren nach Anspruch 1, bei dem das Flammschutzmittel in einer Menge von 20 bis 200 Gew.-%, bezogen auf das Gewicht der nicht imprägnierten Holzwollefasern, eingesetzt wird.
- Verfahren nach Anspruch 1, bei dem das Bindemittel in einer Menge von 150 bis 300 Gew.-%, bezogen auf das Gewicht der nicht imprägnierten Holzwollefasern, eingesetzt wird.
- Verfahren nach Anspruch 1, bei dem das Wasserglas in einer Menge von 10 bis 200 Gew.-%, bezogen auf das Gewicht der nicht imprägnierten Holzwollefasern, eingesetzt wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2001117942 DE10117942A1 (de) | 2001-04-10 | 2001-04-10 | Verfahren zur Herstellung eines Bauelementes |
| DE10117942 | 2001-04-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1249547A2 true EP1249547A2 (de) | 2002-10-16 |
| EP1249547A3 EP1249547A3 (de) | 2003-08-20 |
Family
ID=7681135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02004086A Withdrawn EP1249547A3 (de) | 2001-04-10 | 2002-02-25 | Verfahren zur Herstellung eines Brandschutz-Bauelementes |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1249547A3 (de) |
| CN (1) | CN1380170A (de) |
| DE (1) | DE10117942A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004065317A3 (de) * | 2003-01-18 | 2005-02-24 | Heraklith Ag | Leichtbauelement |
| EP2514731A1 (de) * | 2011-04-20 | 2012-10-24 | Knauf Insulation | Holzwolle-Leichtbauelement |
| CN117127730A (zh) * | 2023-09-20 | 2023-11-28 | 北京红集兢业科技有限公司 | 阻燃木棉保温板、阻燃木棉加工方法及凝化反应设备 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390073A (zh) * | 2009-09-16 | 2012-03-28 | 廖树汉 | 用玉米秆生产千度不燃无烟保温如陶瓷纤维的挡火板 |
| CN102514339A (zh) * | 2009-09-16 | 2012-06-27 | 廖树汉 | 用包装箱纸皮生产千度不燃无烟保温如陶瓷纤维的挡火板 |
| AU2016340155B2 (en) * | 2015-10-16 | 2022-06-30 | Ultracell Insulation, Llc | Cellulose-based insulation and methods of making the same |
| CN115142256B (zh) * | 2022-08-17 | 2023-09-08 | 石家庄海关技术中心 | 一种阻燃布料及其制备方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH150607A (de) * | 1929-09-25 | 1931-11-15 | Ig Farbenindustrie Ag | Verfahren zur Herstellung von wässerigen Salzlösungen. |
| CH173003A (de) * | 1932-12-19 | 1934-11-15 | Alge Bruno | Verfahren zur Herstellung eines Leichtbaumaterials. |
| NL103479C (de) * | 1959-02-20 | |||
| AT370470B (de) * | 1981-06-24 | 1983-04-11 | Oesterr Heraklith Ag | Mehrschicht-daemmplatte und verfahren zu ihrer herstellung |
| DE3224125C1 (de) * | 1982-06-29 | 1983-06-01 | Nukem Gmbh, 6450 Hanau | Baustoffplatten und Baustofformteile auf Zementbasis |
-
2001
- 2001-04-10 DE DE2001117942 patent/DE10117942A1/de not_active Withdrawn
-
2002
- 2002-02-25 EP EP02004086A patent/EP1249547A3/de not_active Withdrawn
- 2002-04-10 CN CN 02106060 patent/CN1380170A/zh active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004065317A3 (de) * | 2003-01-18 | 2005-02-24 | Heraklith Ag | Leichtbauelement |
| EP2514731A1 (de) * | 2011-04-20 | 2012-10-24 | Knauf Insulation | Holzwolle-Leichtbauelement |
| CN117127730A (zh) * | 2023-09-20 | 2023-11-28 | 北京红集兢业科技有限公司 | 阻燃木棉保温板、阻燃木棉加工方法及凝化反应设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10117942A1 (de) | 2002-10-24 |
| CN1380170A (zh) | 2002-11-20 |
| EP1249547A3 (de) | 2003-08-20 |
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| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| AK | Designated contracting states |
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| PUAL | Search report despatched |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: HERAKLITH AG |
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| 17P | Request for examination filed |
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| AKX | Designation fees paid |
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| 18W | Application withdrawn |
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