WO2019101277A1 - Composite thermal wall element - Google Patents
Composite thermal wall element Download PDFInfo
- Publication number
- WO2019101277A1 WO2019101277A1 PCT/DK2018/050307 DK2018050307W WO2019101277A1 WO 2019101277 A1 WO2019101277 A1 WO 2019101277A1 DK 2018050307 W DK2018050307 W DK 2018050307W WO 2019101277 A1 WO2019101277 A1 WO 2019101277A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- wall element
- thermal wall
- csh
- diffusion open
- Prior art date
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 42
- 238000009792 diffusion process Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000012774 insulation material Substances 0.000 claims abstract description 19
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 9
- 239000000378 calcium silicate Substances 0.000 claims abstract description 9
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 112
- 239000006260 foam Substances 0.000 claims description 38
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 22
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 18
- 239000005011 phenolic resin Substances 0.000 claims description 17
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 239000000853 adhesive Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 12
- 239000004604 Blowing Agent Substances 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 9
- 239000003377 acid catalyst Substances 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 8
- 229920003987 resole Polymers 0.000 claims description 8
- 229920001568 phenolic resin Polymers 0.000 claims description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000004014 plasticizer Substances 0.000 claims description 5
- 238000010561 standard procedure Methods 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- 125000005396 acrylic acid ester group Chemical group 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
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- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
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- 150000004692 metal hydroxides Chemical class 0.000 claims 1
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- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims 1
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- 238000002360 preparation method Methods 0.000 abstract description 10
- JLDKGEDPBONMDR-UHFFFAOYSA-N calcium;dioxido(oxo)silane;hydrate Chemical compound O.[Ca+2].[O-][Si]([O-])=O JLDKGEDPBONMDR-UHFFFAOYSA-N 0.000 abstract description 4
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- 239000004927 clay Substances 0.000 description 2
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- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- 229920000582 polyisocyanurate Polymers 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- JIRHAGAOHOYLNO-UHFFFAOYSA-N (3-cyclopentyloxy-4-methoxyphenyl)methanol Chemical compound COC1=CC=C(CO)C=C1OC1CCCC1 JIRHAGAOHOYLNO-UHFFFAOYSA-N 0.000 description 1
- 229920001342 Bakelite® Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
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- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
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- ULYZAYCEDJDHCC-UHFFFAOYSA-N isopropyl chloride Chemical compound CC(C)Cl ULYZAYCEDJDHCC-UHFFFAOYSA-N 0.000 description 1
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- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/72—Density
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2607/00—Walls, panels
-
- 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
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
- E04B2/90—Curtain walls comprising panels directly attached to the structure
- E04B2/92—Sandwich-type panels
Definitions
- One traditional construction method for external walls comprises the following steps each m 2 : Firstly, the inner wall of e.g. either 63 clay bricks and 40-50 kg masonry mortar or light weight concrete blocks laid in masonry mortar, layer by layer, is built.
- the inner wall e.g. either 63 clay bricks and 40-50 kg masonry mortar or light weight concrete blocks laid in masonry mortar, layer by layer, is built.
- the present invention solves the problem above by providing according to claim 1 a wall material for construction and insulation of new buildings and extensions wherein said wall material is a composite comprising an insulating layer and two diffusion open calcium silicate hydrate (CSH) layers, e.g. hydrothermal hardened, on each side of the insulating layer, wherein at least one of the calcium silicate hydrate layers are reinforced with rods or fibres, and wherein the layers are by the adhesive character of the insulating layer or, optionally, by an adhesive diffusion open third layer, attached to each other.
- CSH calcium silicate hydrate
- An advantage of the composite wall element of the invention is improved construction speed, fire protection and thermal insulation.
- the thermal insulation properties are improved by lowering the thermal conductivity while maintaining good fire resistance properties.
- Both the insulation material and the mineral CSH-component have high resistance to fire, and improvement of the
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Building Environments (AREA)
Abstract
A composite thermal wall element for new buildings and extensions are disclosed. The composite thermal wall element comprises at least three layers, where a first layer is a diffusion open rigid insulation material (1) and a second and third layer is made by calcium silicate hydrate (CSH) (2) attached on each side to the insulation material (1). At least one of the CSH-layers (2) is reinforced. Methods for preparation of the composite thermal wall element are also disclosed.
Description
Composite thermal wall element
Abbreviations
CSH calcium silicate hydrate
EPS expanded polystyrene
EXP extruded polystyrene
PUR polyurethane
PIR polyisocyanurate
Description
The present invention relates to a wall element for new buildings and extensions, methods for preparation of the wall element, and a use of said wall element.
More specifically it relates to a wall element comprising an insulation material and a calcium silicate hydrate (CSH)-component material on both sides of the insulation material, and methods for preparation of the wall element.
The governments around the civilized world face the consumers of energy for heating both in private housings and in industrial buildings with still higher requirements to lower heat loss to the environment in order to save energy and thus decrease C02 emission. The purpose is to mitigate the increasing average temperatures and consequences of the climate change caused by e.g. increased concentration of CO2 in the air.
New buildings and extensions have today and for many years been built the same way. First the foundation is made, then the walls are set up. Subsequently, the walls are insulated in order to avoid loss of heat through the walls.
One traditional construction method for external walls comprises the following steps each m2:
Firstly, the inner wall of e.g. either 63 clay bricks and 40-50 kg masonry mortar or light weight concrete blocks laid in masonry mortar, layer by layer, is built.
Secondly, mineral insulation is mounted on the outside on the inner wall.
Thirdly, the wall ties are mounted evenly distributed into the inner wall, through the insulation layer.
Fourthly, the outer wall is built of 63 clay bricks and 40-50 kg masonry mortar, layer by layer.
All external joints are manually scratched clean on the face side for preparing final filling,
Thereafter the surface is brushed clean manually with a stiff brush for cleaning off loose mortar remains.
Then all joints in the brickwork are manual sealed with compacted weather resistant mortar.
Finally, all surfaces are cleaned in a 1 ,5 % solution of HCI.
The disadvantages of the method of prior art are that the total building process requires several steps and the insulation of the walls are not very effective, and because it is a construction with so many parts and processes, there always is many risks of failures e.g. air tightness, waterproofness, frost damages and failures in mortar cohesion in between the bricks/blocks and the mortar, which can result in failure.
Thus, it is highly desirable to provide a wall material for new buildings and extensions whereby the heat loss and construction costs are lowered by significant less parts lowering the risks for failure e.g. airtightness,
waterproofness, frost damages and failures in mortar cohesion, while the fabrication process of the wall materials is not more expensive than the total costs of the wall and insulation materials of prior art.
Prior art describes in EP2395171A1 a board of a composite material with a sandwiched structure, an insulation material of porous concrete in the middle
and two outer layers, one on each side of the insulation material. The outer layers and the insolation layer are made from porous concrete i.e. calcium silicate hydrate, and, the middle layer has pores of a smaller diameter. It is a monolithic structure.
However, the composite is suited as a building material only for a minor block wall. If it is a large element it would break during transport and handling to the building site. It is not strong enough against mechanical load from e.g. wind load, roof load and transport impacts, because the CSH-layers are not strong enough. Summary of the invention.
The present invention solves the problem above by providing according to claim 1 a wall material for construction and insulation of new buildings and extensions wherein said wall material is a composite comprising an insulating layer and two diffusion open calcium silicate hydrate (CSH) layers, e.g. hydrothermal hardened, on each side of the insulating layer, wherein at least one of the calcium silicate hydrate layers are reinforced with rods or fibres, and wherein the layers are by the adhesive character of the insulating layer or, optionally, by an adhesive diffusion open third layer, attached to each other.
An anticipated embodiment is where the insulation layer and the CSH- component layers are further specified as in claim 2 and 3.
Yet other anticipated embodiments are wherein the regid phenol foam is further specified as in claim 4 or 5.
Claims 6 to 8 claim embodiments wherein the glue for adhesion is further specified.
Claim 9 claims an embodiment wherein the rigid phenol foam is specified by its preparation from its starting materials.
Anticipated embodiments wherein the diffusion open rigid insulation material is further specified, are claimed in claim 10, anticipated embodiments wherein the rods or fibres are further specified, are claimed in claim 11 , or wherein the wall element has a hole for lifting the wall element is specified, is claimed in claim 12.
A method for preparation of the composite thermal wall element is claimed in claim 13 and further methods in claims 14 to 22. Claim 13 to 16 claims horizontal preparation methods and claim 17 a vertical preparation method.
In order that the invention may be well understood, some non-limiting examples will now be described in which:
Fig.1 shows a cross-section of a building and where a composite wall element of the invention is intended for use. The reinforcement is not shown.
Fig. 2 shows a composite wall element of the invention comprising three layers.
Fig. 3 shows a composite wall element of the invention comprising five layers.
Fig. 4 shows a composite wall element of the invention comprising seven layers.
Fig. 5 shows a cross-section of a composite wall of the invention intended for plastering.
Fig. 6 shows a cross-section of a composite wall of the invention intended for a raw appearance or for paint.
Fig. 7 shows an example of wall made from composite thermal wall elements of the invention. The reinforcement is not shown.
Fig. 8 shows an example of a wall made from composite thermal wall elements of the invention for a window opening. The reinforcement is not shown.
The advantages of the present invention are now described and where possible by referring to the figures above.
Fig. 1 shows a cross-section of a building. The arrows point to where the composite thermal wall element of the invention may be applied, i.e. for the external structural walls, in the basement, at first or higher floors, or in the middle of the house in-between rooms that needs thermal or acoustic insulation. The wall has a low thermal conductivity and is noise reducing as well. It is very effective for thermal insulation. The reinforcement is not shown.
Referring to Fig. 2 the composite thermal wall element according to the invention
comprises at least three layers. The foam layer, 1 , is attached on each face side, 11 , visible on the figure and 12, not visible, to a CSH-component layer, 2. Either, the foam layer is sticking to the CSH-component layer, 2, or an adhesive layer (not shown) joins the foam, 1 , and CSH-component layer, 2, see Fig. 3.
An advantage of the composite wall element of the invention is improved construction speed, fire protection and thermal insulation. The thermal insulation properties are improved by lowering the thermal conductivity while maintaining good fire resistance properties. Both the insulation material and the mineral CSH-component have high resistance to fire, and improvement of the
reinforcement can raise the low bearing capacity even further.
The construction speed and the working environment regarding healthy and safety is improved, because the walls are installed by using special lifting tools and less manual handling. A special lift or crane can handle a wall element.
Fig. 3 shows another composite thermal wall element according to the invention. It has five layers. The foam layer, 1 , is attached to an adhesive layer, 3, on both face sides, 11 and 12, and the adhesive layers, 3, are each attached to a CSH- component layer, 2. One CSH-layer, 2, is reinforced with rods as illustrated in the drawing.
Fig. 4 shows a composite thermal wall element according to the invention. It has seven layers. The foam layer, 1 , is in the middle and by the adhesive
characteristic of the foam layer, 1 , attached on each face side to a protective glass-fibre fabric layer, 4. The protective layers, 4, are each on their other face sides, one is not visible, attached to an adhesive layer, 3, and the adhesive layers, 3, are each attached to a CSH-component layer, 2. One CSH-layer, 2, is reinforced with rods as illustrated.
The above composite is prepared directly from products available on the market.
Fig. 5 shows a reinforced cross section of joined composite thermal wall elements as in Fig. 2. The wall elements are covered with a layer of plaster that can be reinforced by a mesh of glass fibre fabric on the whole surface. 5. The outmost layer is typically a voluntary optical layer of paint, 6. The ends of the rods, 10, of the reinforcement are shown.
Fig. 6 shows a reinforced cross section of a joined composite thermal wall elements as in Fig. 2. The edges are chamfered. The outmost layer is a layer of paint, 6. As seen, the edges are chamfered, 7, and the joint sealed, 8. The paint covers both the CSFI-component and the joint. The ends of the rods, 10, of the reinforcement are shown.
Fig. 7 shows an example of how composite thermal wall elements are installed.
In between the complete thermal wall elements in the vertical joints, there is used an adhesive layer of thin layer mortar, synthetic glue or other practical functioning adhesive. The rods of the reinforcement are not shown.
Fig. 8 shows an example of how composite thermal wall elements can be installed around windows. In between the complete thermal wall elements in the vertical joints, there is an adhesive layer of thin layer mortar, synthetic glue or other practical functioning adhesive. The rods of the reinforcement are not shown.
Fig. 2 to 7 show all an embodiment of a thermal wall element according to the invention. The insulating phenolic foam is commercially available. It is anticipated that the foam layer may be made from a resole. This has a composition, if it includes a facing material, of:
About 70% resole resin, about 15% additives, 9% facing material and a propellant with no depletion potential 5%.
It is made from a liquid resole resin, calcium carbonate as filler, additives and a blowing agent. The foam is rigid and has 90% or more closed cells. Examples
are published in EP1922356 B1 and EP1922357 B1.
The CSH-component of the claimed embodiments of the composite thermal wall element may deviate in its composition as follows:
It is anticipated that e.g. a light weight aircrete for the CSH-component may have the following composition:
The traditional manufacturing of the phenolic foam needs a surface covering to prevent the foam from sticking to the production equipment but also a firm support layer or surface to form the foam. So, on the market the foam layer is sold sticking on both sides to a glass fibre fabric. A thermal wall element of the invention may or may not comprise the support layer.
Examplel . Preliminary experiment for filling.
Two CSH-component boards are provided from H+H Deutschland GmbH. They have been prepared according to a well-known method, see Environmental Product Declaration of Non-reinforced autoclaved aerated concrete, 2014.
A similar adhesive foam, which has the adhesive property of phenol foam, polyurethane foam, is used in investigating tests to confirm that a proper adhesion of the formed foam to the CSH-components can be achieved.
The CSH-components are placed aligned and plan parallelly, vertically, at a distance of 10 cm and the polyurethane foam is raised and filled up the cavity. No glue layer is used as the freshly formed foam itself between the CSH- components established the necessary cohesion to the CSH-components. A composite with good insulation properties was obtained.
Example 2. Vertical preparation for filling.
Two autoclaved aerated concrete CSH-component boards are provided from H+H Deutschland GmbH. They have been prepared according to a well-known method published in Environmental Product Declaration of Non-reinforced autoclaved aerated concrete, 2014.
The following test is performed with not reinforced boards as these were available, and the test should show whether a composite could be prepared applying the adhesive character of a foam prepared from a liquid resole resin.
Two concrete CSH-component boards are aligned plan parallelly, vertically, at a distance of 5 to 20 cm, tempering the CSH-component layers to 50°C to 80°C, and filling in between a liquid phenol resin with calcium carbonate as filler, an acid catalyst and a blowing agent, forming an insulation material layer, 1 , in between the preheated CSH- component layers, by applying the liquid phenol resin with calcium carbonate as filler, an acid catalyst and a blowing agent and wait until the curing step has finished.
As a preferred example the tempering step is performed to 60°C to 70°C.
As a preferred example the liquid phenol resin may be the phenol resole resin composition comprising in the following ratios: 240 g of the commercially available liquid phenol formaldehyde resin supplied by Sumikomo Bakelite, R330, having a viscosity of 8000-10000 cP at 25°C, weight average molecular weight 600-1200 and pH 5,3 to 6,3, containing from 2 to 4% free phenol and 3 to 4% free formaldehyde, with a phenol/formaldehyde molar ratio of 1 :2 and a water content of 11 to 13%, is mixed at 15°C with 12,0 g powdered urea and 6,0 g of a castor oil-ethylene oxide adduct as plasticiser and allowed to stand 14 hours. Then 12 g calcium carbonate is added and mixed into the resin until uniformly dispersed. Finally, 20 g of blended isopropyl chloride/isopentane 85/15 parts by weight as blowing agent is mixed at 1 °C into the resin. Once a uniform
suspension is formed the resin mixture is cooled to 8°C. Then 40,0 g liquid para- toluene sulfonic acid/xylene sulfonic acid blend 65/35 parts by weight at 92% concentration at 8°C is quickly mixed in.
200 g of the resin mix is quickly poured in between the boards, and then cured at elevated temperature 70°C. The foam is cured for 10 minutes and cured in an oven afterwards for another 2 hours.
A composite having very good thermal insulation properties and good fire resistance is obtained.
Example 3. Horizontal preparation for gluing.
An anticipated method of preparing the composite wall element of the invention comprises, to prepare the composite wall element by
providing two autoclaved aerated concrete CSH-component boards are provided from H+H Deutschland GmbH. They have been prepared according to a well- known method published in Environmental Product Declaration of Non-reinforced autoclaved aerated concrete, 2014, preparing a foam layer board according to standard method EN 13166:2012 +
A2:2016 (E) on a support layer which also serves as a first protective layer, placing a second protective layer on the other side of the foam layer,
provide one CSH-component layers pre-prepared using standard methods, and at least one CSH-component layer reinforced with rods or fibres, applying a suitable adhesive layer to each protective layer’s face side or to one side of each CSH-component layer, and combining the layers, thereby attaching the protective layers to the CSH- component layers and allowing the resulting composite to be diffusion open.
A suitable adhesive is an air-hardening moistens fast synthetic aqueous copolymer dispersion, in German called a“Kunststofharzdispersion”, based on styrene and an acrylic acid ester with a solid content of 20-80%, preferably 50% +/- 1 %.
Example 4. Horizontal preparation for filling.
Yet another anticipated method comprises,
providing two CSH-component layers, one layer may be prepared by using standard methods as e.g. published in Environmental Product Declaration of Non-reinforced CSH-component, and at least one other CSH-component layer is prepared with rods or fibres for reinforcement,
and wait until the CSH-component layers have reached 50 to 80°C, fill onto one of the horizontal laying CSH-component layers a composition comprising a phenol resin, using a standard method for preparing foam boards, e.g. as published in Environmental Product Declaration Kingspan Kooltherm K5, EP1922356B1 EP1922357B1 or as described in Example 2 except for that the curing process is postponed, as the next step is placing on the other side said other CSH-component layer as a second foam support layer or carrier
and then performing a curing step for the foam forming process above, applying the adhesive property of the formed foam for attaching the layers of CSH- component, one on each side of the foam layer.
The phenolic foam may, preferably, be formed from a liquid resole resin comprising calcium carbonate as filler, an acid catalyst and a blowing agent. An additive may also be present.
Claims
1. A thermal wall element for a building wherein said thermal wall element is a composite comprising at least three layers, where a first layer, 1 , is a diffusion open rigid insulation material, and a second layer, 2, attached thereto and a third layer, 2, are diffusion open calcium silicate hydrate layers, the first, 1 , and second layer, 2, being attached to each other, and the first, 1 , and third layer, 2, being attached to each other, characterised in that at least one of said diffusion open calcium silicate hydrate layers, 2, is a layer reinforced with rods or fibres, and wherein any of said layers, 2, are attached by an adhesive diffusion open layer, 3, or by the adhesive character of the first layer, 1.
2. A thermal wall element according to claim 1 wherein the rigid open
insulation layer, 1 , is a rigid phenol resin foam with more than 70%, preferable more than 90%, closed cells.
3. A thermal wall element according to claim 1 or 2 wherein said at least two diffusion open calcium silicate hydrate layers or second layer, 2, and third layer, 2, have a density of 250-2500 kg/m3 and a compressive strength of 1 ,5-40 MPa.
4. A thermal wall element according to any of the claims 2 to 3 wherein the
rigid phenol foam is prepared from a composition comprising a liquid resole resin and calcium carbonate as filler using an acid catalyst and a blowing agent.
5. A thermal wall element according to claim 4 wherein the composition further comprises a plasticiser.
6. A thermal wall element according to any of the claims 1 to 5 wherein said adhesive diffusion open layer, 3, is a layer of glue such as a non-plasticized aqueous copolymer dispersion based on styrene and an acrylic acid ester.
7. A thermal wall element according to claim 6 wherein said glue is an air- hardening moistens fast synthetic aqueous copolymer dispersion based on styrene and an acrylic acid ester with a solid content of 20-80%, preferably 50% +/- 1 %.
8. A thermal wall element according to claim 7 wherein said synthetic aqueous copolymer dispersion is a styrene acrylic acid esters.
9. A thermal wall element according to any of the claims 2 to 8 wherein the rigid phenol foam is prepared from a phenolic resin composition comprising a phenolic resin, a blowing agent comprising at least one of butane, hexane and isomers thereof, an acid catalyst and a metal hydroxide or metallic carbonate with an Equilibrium Solubility (Ksp) less than 108 when measured at 25°C and is present in an amount of from 1 to 10 parts per weight per 100 parts by weight of phenolic resin, and wherein the phenolic foam comprises a plasticiser for the phenolic resin wherein the plasticiser has a molecular structure containing both an ester backbone and a hydroxyl group, an organic modifier for co-reacting with the phenolic resin, the phenolic foam having a pH of 5 or more.
10. A thermal wall element according to any of the claims 1 to 9 wherein said diffusion open rigid insulation material, 1 , is a layer of EPS, EXPS, PIR,
PUR, mineral wool, or glass wool.
11. A thermal wall element according to any of the claims 1 to 10 wherein said rods or fibres are steel rods, synthetic, organic, inorganic, mineral, or metallic fibres.
12. A thermal wall element according to any of the claims 1 to 11 wherein the wall element has a hole for lifting said wall element using a tool adapted to be inserted in said hole.
13. A method for preparing a composite thermal wall element characterised in, that it comprises the steps, provide preferably horizontally a first layer made from a diffusion open rigid insulation material, 1 , if it is a foam material having above 70% preferably above 90% closed cells, such as a board according to standard method EN 13166:2012 + A2:2016 (E), optionally, covered on one or both sides with a glass-fibre layer or another carrier layer, provide a first and a second diffusion open CSH-component layer, 2, at least one reinforced with rods or fibres, and attaching on top of each side of the insulation material layer, 1 , e.g. horizontally or vertically, one of the diffusion open CSH- component layers, 2,
applying a layer of a suitable adhesive layer, 3, such as a glue by applying the layer of a glue, 3, to the first layer, 1 , one on each face side of the first layer, 1 , and attaching on top of each one of the layers of glue, 3, one of the diffusion open component layers, 2.
14. A method for preparing a composite thermal wall element according to claim 13 where the hardening of the glue takes place at a film forming
temperature of above 5°C.
15. A method for preparing a composite thermal wall element according to claim
13 or 14 wherein the diffusion open rigid insulation material is a diffusion open rigid phenol resin foam with closed cells, optionally prepared on a diffusion open glass fibre support layer.
16. A method for preparing a composite thermal wall element characterised in, that it comprises the steps, providing a first and a second diffusion open CSH-component layer, 2, of 50 to 80°C, preferably 60 to 70°C, at least one reinforced with rods or fibres forming, preferably horizontally, an insulation material layer, 1 , on top of one side of the first diffusion open CSH-component layer, 2, by applying a liquid phenol resin with calcium carbonate as filler, an acid catalyst and a blowing agent, foaming and curing the phenolic resin, thereby providing a diffusion open rigid insulation material, 1 , having above 70%, preferably above 90% closed cells, and attaching before the curing has finished the second diffusion open CSH-component layer, 2, of 50 to 80°C, preferably 60 to 70°C, applying the adhesive character of the foam for the attachment, into a composite.
17. A method for preparing a composite thermal wall element characterised in, that it comprises the steps, providing a first and a second diffusion open CSH-component layer, 2, at least one reinforced with rods or fibres,
placing the second diffusion open CSH-component layer, 2, plan parallelly preferably vertically at a distance from the first diffusion
open CSH-component layer, provide pre-tempered to 50 to 80°C the CSH-component layers and a composition comprising a liquid phenol resin, calcium carbonate as filler, an acid catalyst and a blowing agent, forming an insulation material layer, 1 , in between the preheated CSH-component layers, by applying the composition comprising a liquid phenol resin, calcium carbonate as filler, an acid catalyst and a blowing agent, and curing the foam, thereby providing a diffusion open rigid insulation material, 1 , having above 70%, preferably above 90% closed cells, thereby obtaining a composite by applying the adhesive character of the foam for the attachment.
18. A method according to claim 17 wherein the preheating is performed at a temperature of 60°C to 70°C.
19. A method according to claim 16, 17 or 18 wherein the liquid phenol resin composition comprises a plasticiser.
20. A method according to any of the claims 16 to 19 wherein the liquid phenol resin is a resole resin.
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EP18881038.6A EP3714111A4 (en) | 2017-11-24 | 2018-11-21 | Composite thermal wall element |
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DKPA201800307A DK180181B1 (en) | 2017-11-24 | 2018-06-29 | Thermal composite wall element |
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