EP3418464A1 - Dämmelement - Google Patents

Dämmelement Download PDF

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Publication number
EP3418464A1
EP3418464A1 EP18187249.0A EP18187249A EP3418464A1 EP 3418464 A1 EP3418464 A1 EP 3418464A1 EP 18187249 A EP18187249 A EP 18187249A EP 3418464 A1 EP3418464 A1 EP 3418464A1
Authority
EP
European Patent Office
Prior art keywords
coating
insulating element
element according
fibers
insulating
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Withdrawn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
EP18187249.0A
Other languages
German (de)
English (en)
French (fr)
Inventor
Gerd-Rüdiger Klose
Werner Paulitschke
Herbert Pieper
Klaus Franz
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.)
Rockwool AS
Original Assignee
Rockwool International AS
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 Rockwool International AS filed Critical Rockwool International AS
Publication of EP3418464A1 publication Critical patent/EP3418464A1/de
Withdrawn legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/288Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/16Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like

Definitions

  • the invention relates to an insulating element, in particular for the thermal and acoustic insulation of flat or flat-inclined roofs, consisting of bound with binders mineral fibers, in particular glass and / or stone fibers and with one, a surface to be insulated facing first large surface and a parallel thereto and spaced apart second large surface, said large surfaces being interconnected via side surfaces, which side surfaces are oriented substantially perpendicular to each other and to the large surfaces, and having at least one coating disposed on a surface.
  • insulating materials made of mineral fibers are known, which are offered for example under the name "rock wool” on the market and are characterized by high thermal resistance. These insulating materials have a melting point ⁇ 1000 ° C according to DIN 4102 Part 17 and are made of melts, their stones, slags and other residues include. The raw materials are melted in cupola or tank furnaces and the melts are formed on different shredding machines.
  • organic binders in particular mixtures of thermosetting phenolic, formaldehyde, urea resins are used.
  • the proportions of organic binders are generally less than 4.5% by mass, according to the nozzle blowing method limited rock wool insulation materials to less than about 8% by mass.
  • Rock wool insulation materials are also made using the processes commonly used to make glass wool. Such a production process is characterized in particular by the fact that no or only very small amounts of non-fibrous particles are formed.
  • the mineral fibers formed are impregnated with additives that once have a water-repellent effect and, due to the changed interfacial properties of the mineral fibers, develop low adhesive forces that can hold fragments of the finest mineral fibers to a small extent.
  • additives that once have a water-repellent effect and, due to the changed interfacial properties of the mineral fibers, develop low adhesive forces that can hold fragments of the finest mineral fibers to a small extent.
  • high-boiling mineral oils, oil-in-water emulsions, rare silicone oils or resins are used for this purpose. The proportions are about 0.2 to about 0.4 mass%.
  • Rock wool insulation products are predominantly produced by cascade fiberizing machines. These shredding machines allow the processing of high alkaline glasses with very narrow processing areas. However, only very short mineral fibers are formed, which are additionally deformed by the high air velocities required for the removal of the mineral fibers formed.
  • the defibering machine is arranged at the entrance of a horizontally directed collection chamber, in which the formed mineral fiber stream with the aid of an air flow is continuously passed to an arranged at the end of the collection chamber air-permeable conveyor. On the way to this conveyor, the coarser non-fibrous particles are separated.
  • the mineral fiber stream consists of the impregnated with binders and additives mineral fibers and the non-fibrous particles. Furthermore, mineral fibers are transported, which are not impregnated with binders.
  • the cohesion and the deformation behavior of the fiber mass formed from the mineral fibers is significantly influenced by the blowing in of production waste in the form of ground insulation particles or fibers and regularly worsened with larger quantities. These processed by crushing insulation materials do not get into the actual binder flow and are therefore captured only because of their shape of just formed fiber flakes.
  • the solidified binders contained in them carry additional combustible organic substances in the pulp and thus in to be produced from the fiber mass insulating materials.
  • the air-permeable conveyor has a filtering effect.
  • the mineral fibers deposit in the form of an impregnated primary fiber web on the conveyor with a thickness which is dependent on the performance of the fiberizing machine and the conveying speed of the conveyor.
  • low basis weights of the primary fibrous web are desired to avoid premature solidification of the binders despite minimal amounts of coolant, such as water.
  • the primary fiber web is then placed transversely and obliquely overlapping each other on a third slow-moving conveyor with the aid of a swinging second conveyor.
  • the described manner of forming a sufficiently thick impregnated fiber web is referred to as indirect collection.
  • a direct Aufsammlung is known in which impregnated with binders and additives mineral fibers, optionally including the non-fibrous particles, the binder-free fibers and the fine recycled fine insulation flakes using a chute or by deflection from the horizontal in a correspondingly high Collection chamber are stored to the desired height or the required basis weight on a slow-speed conveyor.
  • the mineral fibers are layered flat without preference preferred flat.
  • the continuous impregnated fiber web formed in the indirect and direct collection can then be compressed to the desired thickness and then compressed into a curing oven. are, after this predominant vertical compression between the curing oven has two superimposed pressure-transmitting conveyor belts.
  • the two conveyor belts of the curing oven consist of U-shaped elements, which are attached to rotating tension members and thus form an endless belt. In the pressure-transmitting surfaces of the lamellar elements long and round holes are present through the hot air in the vertical direction durhc the endless fiber web is sucked.
  • the insulation sheet can by longitudinal and transverse saws in plate-like body, if also be divided by horizontal sawing into thinner plates.
  • the non-combustible insulating materials made of mineral fibers, in particular rock wool, are used on a large scale for the insulation of lightweight roof constructions in particular. Roof constructions with a slope of the roof surface of ⁇ 10 ° are called flat in the relevant technical rules. These lightweight flat roof constructions often have as a load-bearing roof shell wide-stretched and also still thin profile sheets. Extremely profiled sheets have clear widths between edges of the upper chords up to 172 mm. Occasionally, the profiled sheets are also installed in a negative position, so that the wider upper straps are now directed downward, which increases the clear widths between the now upper lying lower straps. The lightweight flat roof constructions bend already under their own weight and later under the weights of water and snow through.
  • the insulation boards are usually designed in the form of large-sized plates in the dimension of, for example, 2 m length x 1.2 m width on the supporting roof shell or the vapor-damping airtightness layer in the association.
  • these large-format plates form multi-field carriers, which have a significantly higher carrying capacity than narrower plates or even the previously customary small-format plates with dimensions of, for example, 1 m length x 625 mm width.
  • the insulation boards must be cut so that the plate joints are each on the middle of a top chord.
  • pressure-resistant form-fitting bead fillers can be used above the lower chords in the profiles on which rest the plate joints of adjacent insulation boards.
  • roofing membranes are then glued or foils designed.
  • the roof waterproofing membranes or foils, as well as the insulation boards are connected with screws with the profile sheets.
  • pressure-distributing plates or rails are screwed with the screws.
  • Rock wool insulation materials have the advantage that they do not react chemically with the different sealants.
  • the insulating panels made from these insulation materials have no thermally induced changes in dimensions, their edges are also relatively soft, both of which prevents mechanical effects on the sealing materials.
  • the insulating materials are also permeable, allowing for an unhindered passage of water vapor and, if sufficient amounts of energy are available, for drying possibly damp roof structures.
  • the flat roof constructions described above are in contrast to, for example, parking decks or terraces as unusable roof structures that are to be entered only occasionally for maintenance after the deployment phase. Partial surfaces to be controlled regularly, such as running paths, are protected by pressure-distributing layers on the sealing sheets or foils and structures raised thereon. There is also the possibility to set up heavy-duty supporting structures on the supporting roof shell. As a result, but the seal and the insulating layer are penetrated, so that errors or leaks can arise.
  • Rock wool insulation boards are designed primarily for high compressive strength, generally seeking to maintain a thermal conductivity of ⁇ 0.040 W / m K.
  • Insulation boards under waterproofing shall have a minimum compressive stress CS (10Y) 60, ie at 10% compression ⁇ 60 kPa, for the mean compressive loads that occur in unused roofs according to DIN EN 13162.
  • the insulation boards In order to achieve such compressive stress values, the insulation boards must have either a high bulk density and / or high binder contents.
  • the insulation boards are heavily folded for use in the flat roof area, so that the mineral fibers are aligned in a steep storage to the large surfaces.
  • the forces to unfold the impregnated fiber web are introduced through the large surfaces of the primary fiber web. Since forces of similar magnitude and direction act on the fibrous web in the curing oven via the conveyor belts, mineral fibers are oriented in and below the two major surfaces of the fibrous web and those made therefrom relatively flat or at least flatter to the large surfaces than in an area between the two major ones Surfaces of the insulation board. The same applies to the insulating panels made from the insulating material.
  • the insulating material web is divided horizontally into one or more layers, at least one of the large surfaces of a partial web obtained in this way lies in a region of the insulating material web which has low strength.
  • insulation boards which have a high layer on a surface.
  • This layer usually has bulk densities of about 150 to about 170 kg / m 2 , so that the thus formed insulation boards have densities of about 180 to about 220 kg / m 3 .
  • a further improvement in the load-bearing capacity of an insulating layer is achieved by placing two highly compressed layers on top of one another in such a way that one high-density layer at the top and one on the other bearing roof shell or the vapor-damping and air-blocking layer rests.
  • the load-bearing capacity of such an insulation board formed by multiple layers of insulating layer does not increase or only insignificantly increases.
  • the strength of the insulation layer decreases over time due to relaxation effects, i. H. by reducing the stresses induced by compression and convolution. These effects are accelerated and increased by repeated mechanical stress.
  • the resulting hydromechanical mechanisms of action can lead to substantial loss of strength as a result of the dissolution of the structure.
  • the present invention seeks to improve a generic insulation element in terms of its static properties, in particular its flexural rigidity and beyond in terms of its processability.
  • the coating consists of at least one reaction product of light-burned magnesia (MgO) with at least one concentrated Magnesiachloridgins.
  • the core of the invention is thus to form per se known insulation elements, in particular roof insulation panels on at least one surface with a rigid layer, which is non-positively connected to the surface.
  • the coating consists of a Sorelzement, wherein optionally inorganic additives, finely ground glass fibers and / or waste of mineral wool insulation materials are added. Additionally or alternatively, plastic short fibers, wood and / or cellulose fibers can be used for reinforcement.
  • Sorel cement is an acid-base cement.
  • the acid used is an aqueous magnesium chloride solution, as a base caustic burned magnesite (magnesium oxide).
  • a base caustic burned magnesite magnesium oxide
  • hardening of the mixture takes place within minutes or even after hours.
  • the coating can be adjusted such that it cures variably within the production process of such insulation elements, so that a fast or late hardening is selected depending on the production process. For example, this visually subsequent processing steps may be useful in which the coating must either be cured or not yet cured.
  • the stoichiometric formula of the reaction is: 5 MgO + MgCl 2 + 13 H 2 O -> 5Mg (OH) 2 ⁇ 8H 2 O 2 .MgCl
  • the resulting compound is a magnesium oxichloride.
  • the coating has a reinforcement.
  • the reinforcement consists of at least one, in particular perforated flat element, in particular of at least a glass fiber batt, fiberglass or cellulose fabric and / or glass fiber staple fibers.
  • the number of reinforcement layers is at least one and a maximum of seven layers.
  • the thickness of the reinforcement or the coating is varied between 2 and 10 mm. In particular, layer thicknesses of about 3 and about 7 mm are built up.
  • the coating may have recesses distributed over the surface in order to improve the diffusion of water vapor through the insulating element.
  • a contact layer of a thin roof insulation panel of mineral fibers, in particular of stone fibers is arranged on the coating.
  • This contact layer preferably has a layer thickness between 5 and 40 mm, in particular between 15 and 25 mm, wherein it has proved to be advantageous to bond the contact layer with the coating.
  • a development of this embodiment provides that the bonding between the contact layer and the coating is effected by the adhesive effect of the uncured coating.
  • the contact layer establishes a contact between the coating and on the insulating elements in the area laid roofing sealants, such as bitumen membranes. Furthermore, the contact layer serves as a water vapor pressure compensation layer.
  • an inventive insulating element is thus constructed at least three layers in the form of a sandwich element, wherein the coating is in communication both with the mineral fiber body of the insulating element and with the contact layer.
  • the adhesive effect of the applied coating is exploited prior to their solidification. If the contact layer is applied only after the coating has set, an unreinforced thin sorel cement layer can be used for this purpose, which forms a connection between the contact layer and the coating on the mineral fiber body of the insulating element.
  • the contact layer described above of a relatively thin mineral fiber plate has a relatively low strength and serves as a powder layer.
  • the thickness of this contact layer is selected such that on the one hand mechanical fastening elements, in particular on the insulating element resting mounting plate can not penetrate so deep into the insulating element that form depressions in which optionally collects surface water.
  • this contact layer also serves insulating and protects the lying below the contact layer coating of Sorelzement at least against the effects of low temperatures, which can lead to frost.
  • the coating is treated and in particular covered with diffusion-permeable impregnation and / or hydrophobizing agents and / or diffusion-open paints, in particular silicate and / or dispersion paint system.
  • diffusion-permeable impregnation and / or hydrophobizing agents and / or diffusion-open paints reduce the effect of the condensation water frequently precipitating on the back of the roof sealing elements.
  • the insulating element is formed as an insulating board with rectangular or triangular surfaces or by training as a shaped body, in particular with semi-cylindrical, spherical or arbitrarily curved shaped surfaces.
  • a first embodiment of a Dämmelements 1 is shown.
  • the insulating element consists of a mineral fiber body 2, which has two large surfaces 3, which are spaced aligned parallel to each other. Perpendicular to the large surfaces 3, the mineral fiber body 2 four side surfaces 4, of which in Fig. 1 two side surfaces 4 are shown. The side surfaces 4 are perpendicular to the large surfaces and each other.
  • the coating has a reinforcement 6, as it consists of a sheet-like element in the form of a glass fiber random web, which is formed perforated.
  • the coating 5 has a layer thickness of 5 mm.
  • the insulating element is designed as an insulating board.
  • a second embodiment of a Dämmelements 1 is in Fig. 2 shown.
  • the embodiment according to Fig. 2 relative to the embodiment of the Dämmelements according to Fig. 1 supplemented by a contact layer 8, which is connected to the coating 5, namely glued.
  • the contact layer 8 consists of a thin Dachdämmplatte of mineral fibers and has a layer thickness of 20 mm.
  • the bonding between the contact layer 8 and the coating 5 is carried out with a layer not shown Sorelzement, which is applied to the previously cured coating 5 free of reinforcements.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Building Environments (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
EP18187249.0A 2005-10-07 2006-10-07 Dämmelement Withdrawn EP3418464A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202005015894 2005-10-07
DE102006041560A DE102006041560A1 (de) 2005-10-07 2006-09-05 Dämmelement
EP06792397A EP1931838A1 (de) 2005-10-07 2006-10-07 Dämmelement
PCT/EP2006/009708 WO2007042232A1 (de) 2005-10-07 2006-10-07 Dämmelement

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP06792397A Division EP1931838A1 (de) 2005-10-07 2006-10-07 Dämmelement

Publications (1)

Publication Number Publication Date
EP3418464A1 true EP3418464A1 (de) 2018-12-26

Family

ID=37547036

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18187249.0A Withdrawn EP3418464A1 (de) 2005-10-07 2006-10-07 Dämmelement
EP06792397A Withdrawn EP1931838A1 (de) 2005-10-07 2006-10-07 Dämmelement

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06792397A Withdrawn EP1931838A1 (de) 2005-10-07 2006-10-07 Dämmelement

Country Status (7)

Country Link
EP (2) EP3418464A1 (uk)
CN (1) CN101287881B (uk)
DE (1) DE102006041560A1 (uk)
EA (1) EA013044B1 (uk)
MY (1) MY157895A (uk)
UA (1) UA93521C2 (uk)
WO (1) WO2007042232A1 (uk)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UA104625C2 (uk) * 2009-05-12 2014-02-25 Роквул Интернешнл А/С Звукоізолюючий елемент і спосіб виготовлення звукоізолюючого елемента
DE202010003760U1 (de) * 2010-03-17 2010-07-08 Wedi Gmbh Als Fliesenträger geeignete Bauplatte
DE102010023633A1 (de) * 2010-06-14 2011-12-15 Martin Reuter Bauelement
EP2614192B1 (en) * 2010-09-09 2020-02-12 Rockwool International A/S Heat insulation element for insulating building facades; heat insulation composite system and method for producing a heat insulation composite system
DE102010061539A1 (de) * 2010-12-23 2012-06-28 Saint-Gobain Isover G+H Ag Wärmedämmverbundsystem sowie Fassadendämmplatte hierfür und Verfahren zur Herstellung der Fassadendämmplatte

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2522515A1 (de) * 1974-05-22 1975-12-04 Asahi Chemical Ind Magnesiumoxydzement, seine herstellung und verwendung
WO1985004860A1 (en) * 1984-04-25 1985-11-07 Delphic Research Laboratories, Inc. Fire barrier i. coatings
WO1997021884A1 (en) * 1995-12-14 1997-06-19 Oy Firmo Ltd. Lining panel, a method for manufacturing the same, and a fire retardant composition for use in the method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB454323A (en) * 1934-03-02 1936-09-25 Magnesium Cement Lab Inc Improvements in or relating to structural units
AU6729174A (en) * 1973-04-10 1975-10-02 Carl Maximillian Tryggve Herme Plaster compositions
DE3315901C2 (de) * 1983-05-02 1995-04-27 Deutsche Heraklith Mehrschicht-Leichtbauplatte
CN2231179Y (zh) * 1995-11-18 1996-07-17 芜湖市永春琦防火装璜材料厂 一种防火装饰板

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2522515A1 (de) * 1974-05-22 1975-12-04 Asahi Chemical Ind Magnesiumoxydzement, seine herstellung und verwendung
WO1985004860A1 (en) * 1984-04-25 1985-11-07 Delphic Research Laboratories, Inc. Fire barrier i. coatings
WO1997021884A1 (en) * 1995-12-14 1997-06-19 Oy Firmo Ltd. Lining panel, a method for manufacturing the same, and a fire retardant composition for use in the method

Also Published As

Publication number Publication date
DE102006041560A1 (de) 2007-04-19
WO2007042232A1 (de) 2007-04-19
EA013044B1 (ru) 2010-02-26
MY157895A (en) 2016-08-15
CN101287881A (zh) 2008-10-15
EP1931838A1 (de) 2008-06-18
UA93521C2 (uk) 2011-02-25
EA200800910A1 (ru) 2008-10-30
CN101287881B (zh) 2011-11-30

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