EP2914795B1 - Procédé de fabrication d'éléments profilés - Google Patents

Procédé de fabrication d'éléments profilés Download PDF

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Publication number
EP2914795B1
EP2914795B1 EP13785874.2A EP13785874A EP2914795B1 EP 2914795 B1 EP2914795 B1 EP 2914795B1 EP 13785874 A EP13785874 A EP 13785874A EP 2914795 B1 EP2914795 B1 EP 2914795B1
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EP
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Prior art keywords
profile
organic
component
insulating core
porous material
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EP13785874.2A
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German (de)
English (en)
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EP2914795A1 (fr
Inventor
Marc Fricke
Mark Elbing
Nils Mohmeyer
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BASF SE
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BASF SE
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/06—Single frames
    • E06B3/08—Constructions depending on the use of specified materials
    • E06B3/20—Constructions depending on the use of specified materials of plastics
    • E06B3/205—Constructions depending on the use of specified materials of plastics moulded or extruded around a core
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/06—Single frames
    • E06B3/08—Constructions depending on the use of specified materials
    • E06B3/20—Constructions depending on the use of specified materials of plastics
    • E06B3/22—Hollow frames
    • E06B3/221—Hollow frames with the frame member having local reinforcements in some parts of its cross-section or with a filled cavity
    • E06B3/222—Hollow frames with the frame member having local reinforcements in some parts of its cross-section or with a filled cavity with internal prefabricated reinforcing section members inserted after manufacturing of the hollow frame
    • E06B3/223—Hollow frames with the frame member having local reinforcements in some parts of its cross-section or with a filled cavity with internal prefabricated reinforcing section members inserted after manufacturing of the hollow frame the hollow frame members comprising several U-shaped parts assembled around a reinforcing core member

Definitions

  • the present invention relates to a method for producing a composite element comprising a profile and an insulating core at least partially enclosed by the profile, wherein the insulating core consists of an organic porous material having a thermal conductivity in the range of 13 to 30 mW / m * K, determined according to DIN 12667, and a compressive strength of greater than 0.20 N / mm 2 , determined according to DIN 53421, and the use of a composite element obtained by the method for the production of windows, doors, refrigerators and chests or elements for facade construction.
  • DE 28 44 006 A1 discloses, for example, a method of extruding plastic profiles having a foamed plastic core surrounded on all sides by a plastic sheath, in which the material for the sheath is introduced into the extruder tool in one operation while introducing the core material into the cavity of the formed sheath is, are discharged via the extruder tool during the foaming of the core material into the cavity of the shell introduced gases.
  • WO 99/16996 A1 discloses a method for the production of frame profiles for windows or doors, in which first the outer profile is made of a thermoplastic material and then a foaming mixture based on a polyurethane is introduced into the profile, and while foaming the mixture, a bond between outer profile and Foam is produced. This document also discloses a method in which in the initially shaped outer profile, a prefabricated, finished foamed foam core is inserted.
  • DE 199 61 306 A1 also discloses a method for producing a profile by extrusion.
  • This profile includes an outer shell and a foamed inner core. It is extruded in this process, first the profile outer shell and then foamed with foamable material.
  • DE 1 959 464 also discloses a method for continuous extrusion of continuous profiles with a jacket of thermoplastic material and a foam core, wherein first the jacket of thermoplastic material is produced by extrusion, and this is then foamed with a foamable material.
  • EP 2 072 743 A2 discloses a method for foaming a hollow window or door frame. For this purpose, plastic profiles produced by extrusion are assembled into finished window or door frames and then foamed by introducing a foamable material.
  • DE 10 2009 037 851 A1 discloses insulating elements for thermal separation in profiles for window, door and facade elements, a profile for window, door and facade elements and manufacturing method therefor.
  • EP 2 062 717 A1 discloses a method for producing plastic profiles with a foamed core in a coextrusion process wherein a foamable material, especially in a solid state, is co-extruded into the cavity of a plastic hollow profile and foamed therein.
  • US2010 / 139195 discloses a method of making a composite member having a fiber reinforced airgel insulating core.
  • organic aerogels or xerogels are therefore also used in the prior art as insulating materials which have good property profiles for use as insulating material.
  • WO 2012/059388 A1 Aerogels and xerogels and the use of aerogels and xerogels as insulating material and in vacuum insulation panels.
  • the document further discloses a process for the preparation of porous materials in the form of aerogels or xerogels wherein at least one polyfunctional isocyanate is reacted with an amine component comprising at least one polyfunctional substituted aromatic amine.
  • an object of the present invention was thus to provide a process-technically easy method for producing a composite element having good insulation properties.
  • this object is achieved by a continuous method for producing a composite element comprising a profile and an insulating core at least partially enclosed by the profile, wherein the insulating core consists of an organic porous material having a thermal conductivity in the range of 13 to 30 mW / m * K , determined according to DIN 12667, and has a compressive strength of greater than 0.20 N / mm 2 , determined according to DIN 53421, wherein the profile is built around the insulating core, characterized in that the organic porous material is selected from the group consisting of organic xerogels or organic aerogels or combinations of two or more thereof, wherein the profile is continuously built up around the insulating core by means of a ring extruder.
  • a profile is understood to be a solid structure which has recesses or hollow chambers which extend along the profile. In these recesses or hollow chambers is according to the invention in the composite element of the insulating core.
  • the profile encloses accordingly the insulating core at least partially, preferably completely.
  • the insulating core extends accordingly along the profile.
  • the insulating core according to the invention consists of an organic porous material having a thermal conductivity in the range of 13 to 30 mW / m * K, determined according to DIN 12667, and a compressive strength of greater than 0.20 N / mm 2 , determined according to DIN 53421 ,
  • Suitable materials are known in principle.
  • organic aerogels or organic xerogels have these properties.
  • the resulting composite elements have surprisingly good insulation properties. Due to the low thermal conductivities of the organic porous materials used, good properties can be achieved despite the structurally predetermined small thicknesses of the insulating material, which fulfill the growing requirements for thermal insulation.
  • Such composite elements are particularly suitable for the production of components in which a low U-value (heat transfer coefficient) is required, such as windows or doors.
  • the invention relates to a continuous process for producing a composite element comprising a profile and an insulating core at least partially enclosed by the profile, wherein the insulating core consists of an organic porous material having a thermal conductivity in the range of 13 to 30 mW / m * K, determined according to DIN 12667, and a compressive strength greater than 0.20 N / mm 2 , determined according to DIN 53421, wherein the profile is built around the insulating core around.
  • the organic porous materials used according to the invention have a thermal conductivity in the range of 13 to 30 mW / m * K, determined according to DIN 12667, in particular in the range of 13.5 to 25 mW / m * K, more preferably in the range of 14 to 22 mW / m * K, more preferably in the range of 14.5 to 20 mW / m * K.
  • organic aerogels having a thermal conductivity in the range of 14 to 22 mW / m.sup.-1 K, particularly preferably in the range of 14.5 to 20 mW / m.sup.-K, are particularly preferably used as organic porous materials.
  • the organic porous materials used according to the invention have a compressive strength of greater than 0.20 N / mm 2 , determined in accordance with DIN 53421, in particular greater than 0.25 N / mm 2 , more preferably greater than 0.30 N / mm 2 , more preferably greater than 0.35 N / mm 2 .
  • the high compressive strength of the materials which is a measure of stiffness, allows production and storage of the materials, which facilitates processing in the manufacture of composite elements.
  • the materials can make a constructive contribution.
  • Standard rigid foams which are usually used for insulation, have only compressive strengths of about 0.15 N / mm 2 , for example, with a thermal conductivity in the range of 20 to 25 mW / m * K. Although the compressive strength of such materials could be increased by increasing the thickness, but at the same time the thermal conductivity would increase and thus the insulation properties would be worse.
  • a xerogel is understood as meaning a porous material having a porosity of at least 70% by volume and a volume-average mean pore diameter of at most 50 micrometers, which was produced by a sol-gel process, the liquid phase being dried by drying below the critical temperature and below the critical pressure of the liquid phase (“subcritical conditions") was removed from the gel.
  • an airgel in the context of the present invention is a porous material having a porosity of at least 70% by volume and a volume-averaged mean Pore diameter of at most 50 microns, which was prepared by a sol-gel process, wherein the liquid phase was removed by drying above the critical temperature and above the critical pressure of the liquid phase ("supercritical conditions") from the gel.
  • the mean pore diameter is determined by means of mercury intrusion measurement according to DIN 66133 and is in the context of the present invention basically a volume-weighted average.
  • the volume-weighted mean pore diameter of the porous material is at most 20 microns.
  • the volume-weighted average pore diameter of the porous material is particularly preferably at most 10 micrometers, very particularly preferably at most 5 micrometers and in particular at most 3 micrometers.
  • the volume-weighted mean pore diameter is at least 50 nm, preferably at least 100 nm. In many cases, the volume-weighted average pore diameter is at least 200 nm, in particular at least 300 nm.
  • the organic airgel or xerogel is based on isocyanates and optionally other components which are reactive toward isocyanates.
  • the organic aerogels or xerogels may be based on isocyanates and OH-functional and / or NH-functional compounds.
  • Preference according to the invention for example, organic xerogels based on polyurethane, polyisocyanurate or polyurea or organic aerogels based on polyurethane, polyisocyanurate or polyurea.
  • the organic airgel or xerogel is particularly preferably based on isocyanates and isocyanate-reactive components, with at least one polyfunctional aromatic amine being used as the isocyanate-reactive component.
  • the organic xerogel or airgel is based on polyurea and / or polyisocyanurate.
  • “Based on polyurea” means that at least 50 mol%, preferably at least 70 mol%, in particular at least 90 mol% of the linkages of the monomer units in the organic xerogel or airgel are present as urethane linkages. "Based on polyurea” means that at least 50 mol%, preferably at least 70 mol%, in particular at least 90 mol% of the linkages of the monomer units in the organic xerogel or airgel are present as urea linkages. "Based on polyisocyanurate” means that at least 50 mol%, preferably at least 70 mol%, in particular at least 90 mol% of the linkages of the monomer units in the organic xerogel or airgel are present as isocyanurate linkages.
  • polyurea and / or polyisocyanurate means that at least 50 mol%, preferably at least 70 mol%, in particular at least 90 mol% of the linkages of the monomer units in the organic xerogel or airgel are present as urea linkages and / or isocyanurate linkages.
  • the composite elements may also have combinations of different aerogels and xerogels. It is also possible in the context of the present invention that the composite element has a plurality of insulating cores. It is also possible for the composite element to comprise, in addition to the organic porous material, a further insulating material, for example a polyurethane.
  • organic airgel or xerogel used according to the invention is referred to below as an organic porous material.
  • the polyfunctional isocyanates (a1) are referred to collectively below as component (a1). Accordingly, the polyfunctional aromatic amines (a2) will be collectively referred to below as component (a2). It will be apparent to those skilled in the art that the said monomer components are present in reacted form in the organic porous material.
  • functionality of a compound is to be understood as meaning the number of reactive groups per molecule.
  • the functionality is the number of isocyanate groups per molecule.
  • the functionality denotes the number of reactive amino groups per molecule.
  • a multifunctional compound has a functionality of at least 2.
  • a polyfunctional compound contains at least two of the above-mentioned functional groups per molecule.
  • At least one polyfunctional isocyanate is used as component (a1).
  • the amount of component (a1) used is preferably at least 20% by weight, in particular at least 30% by weight, particularly preferably at least 40% by weight, very particularly preferably at least 55% by weight, in particular at least 68 wt .-%, each based on the total weight of components (a1), (a2) and optionally (a3), which gives 100 wt .-%.
  • the amount of component (a1) used is moreover preferably at most 99.8% by weight, in particular at most 99.3% by weight, particularly preferably at most 97.5% by weight, based in each case on Total weight of components (a1), (a2) and optionally (a3), which gives 100 wt .-%.
  • Suitable polyfunctional isocyanates are aromatic, aliphatic, cycloaliphatic and / or araliphatic isocyanates. Such polyfunctional isocyanates are known per se or can be prepared by methods known per se. The polyfunctional isocyanates can also be used in particular as mixtures, so that component (a1) in this case contains various polyfunctional isocyanates. Monomer building blocks (a1) suitable polyfunctional isocyanates have two (hereinafter Diisocyanates) or more than two isocyanate groups per molecule of the monomer component.
  • MDI 2,2'-, 2,4'- and / or 4,4'-diphenylmethane diisocyanate
  • NDI 1,5-naphthylene diisocyanate
  • TDI 2,4- and / or 2,6-toluene diisocyanate
  • PPDI p-phenylene diisocyanate
  • PPDI tri-, tetra-, penta-, hexa-, hepta- and / or octamethylene diisocyanate, 2-methylpentamethylene-1 , 5-diisocyanate, 2-ethylbutylene-1,4-diisocyanate, pentamethylene-1,5-diisocyanate, butylene-1,4-diisocyanate, 1-isocyanato-3,3,5-trimethyl-5-isocyana
  • oligomeric diphenylmethane diisocyanate As a polyfunctional isocyanate is particularly preferred oligomeric diphenylmethane diisocyanate.
  • Oligomeric diphenylmethane diisocyanate (referred to below as oligomeric MDI) is a mixture of several oligomeric condensation products and thus derivatives of diphenylmethane diisocyanate (MDI).
  • MDI diphenylmethane diisocyanate
  • the polyfunctional isocyanates may preferably also be composed of mixtures of monomeric aromatic diisocyanates and oligomeric MDI.
  • Oligomeric MDI contains one or more polynuclear condensation products of MDI having a functionality of more than 2, in particular 3 or 4 or 5. Oligomeric MDI is known and is often referred to as polyphenylpolymethylene isocyanate or else as polymeric MDI. Oligomeric MDI is usually composed of a mixture of MDI-based isocyanates with different functionality. Typically, oligomeric MDI is used in admixture with monomeric MDI.
  • the (average) functionality of an isocyanate containing oligomeric MDI may vary in the range of about 2.2 to about 5, especially from 2.4 to 3.5, especially from 2.5 to 3.
  • Such a mixture of MDI based on polyfunctional isocyanates with different functionalities is especially the crude MDI, which arises in the production of MDI, usually catalyzed by hydrochloric acid, as an intermediate of the production of crude MDI.
  • Polyfunctional isocyanates or mixtures of several polyfunctional isocyanates based on MDI are known and are sold, for example, by BASF Polyurethanes GmbH under the name Lupranat®.
  • component (a1) is preferably at least two, in particular at least 2.2 and particularly preferably at least 2.4.
  • the functionality of component (a1) is preferably from 2.2 to 4 and more preferably from 2.4 to 3.
  • the content of isocyanate groups of component (a1) is preferably from 5 to 10 mmol / g, in particular from 6 to 9 mmol / g, particularly preferably from 7 to 8.5 mmol / g. It is known to the person skilled in the art that the content of isocyanate groups in mmol / g and the so-called equivalent weight in g / equivalent are in a reciprocal ratio. The content of isocyanate groups in mmol / g results from the content in wt .-% according to ASTM D 5155-96 A.
  • component (a1) consists of at least one polyfunctional isocyanate selected from diphenylmethane-4,4'-diisocyanate, diphenylmethane-2,4'-diisocyanate, diphenylmethane-2,2'-diisocyanate and oligomeric diphenylmethane diisocyanate.
  • component (a1) particularly preferably contains oligomeric diphenylmethane diisocyanate and has a functionality of at least 2.4.
  • the viscosity of the component (a1) used can vary within a wide range.
  • the component (a1) preferably has a viscosity of 100 to 3000 mPa.s, particularly preferably of 200 to 2500 mPa.s.
  • component (a2) at least one polyfunctional OHfunktionalintestine or NH-functionalized compound is used.
  • component (a2) is at least one polyfunctional aromatic amine.
  • Component (a2) can be generated partially in situ.
  • the reaction in step (a) is carried out in the presence of water (a3).
  • Water reacts with the isocyanate groups to amino groups to release CO 2 .
  • Polyfunctional amines partially generated as an intermediate (in situ).
  • they are reacted with isocyanate groups to form urea linkages.
  • the reaction is carried out in the presence of water (a3) and a polyfunctional aromatic amine as component (a2) and optionally in the presence of a catalyst (a4).
  • the reaction of component (a1) and a polyfunctional aromatic amine as component (a2) is optionally carried out in the presence of a catalyst (a4). There is no water (a3) present.
  • Multifunctional aromatic amines are known per se to the person skilled in the art.
  • Polyfunctional amines are to be understood as those which have at least two isocyanate-reactive amino groups per molecule. Reactive towards isocyanates are primary and secondary amino groups, the reactivity of the primary amino groups generally being significantly higher than that of the secondary ones.
  • the polyfunctional aromatic amines are preferably binuclear aromatic compounds having two primary amino groups (bifunctional aromatic amines), corresponding trinuclear or polynuclear aromatic compounds having more than two primary amino groups or mixtures of the abovementioned compounds.
  • Preferred polyfunctional aromatic amines of component (a2) are in particular isomers and derivatives of diaminodiphenylmethane.
  • the bifunctional binuclear aromatic amines mentioned are particularly preferably those according to the general formula I, wherein R 1 and R 2 may be the same or different and are independently selected from hydrogen and linear or branched alkyl groups having from 1 to 6 carbon atoms and wherein all substituents Q 1 to Q 5 and Q 1 ' to Q 5' are the same or different and independently selected from hydrogen, a primary amino group and a linear or branched alkyl group having from 1 to 12 carbon atoms, which alkyl group may carry further functional groups, provided that the compound according to the general formula I comprises at least two primary amino groups wherein at least one of Q 1 , Q 3 and Q 5 is a primary amino group and at least one of Q 1 ' , Q 3' and Q 5 'is a primary amino group.
  • the alkyl groups in the context of the substituents Q according to the general formula I are selected from methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl and tert-butyl. Such compounds are referred to below as substituted aromatic amines (a2-s). However, it is also preferred if all substituents Q represent hydrogen, unless they are amino groups as defined above (so-called unsubstituted polyfunctional aromatic amines).
  • R 1 and R 2 in the general formula I are the same or different and are independently selected from hydrogen, a primary amino group and a linear or branched alkyl group having from 1 to 6 carbon atoms.
  • Suitable polyfunctional aromatic amines (a2) are also in particular isomers and derivatives of toluenediamine.
  • preferred isomers and derivatives of toluenediamine are in particular toluene-2,4-diamine and / or toluene-2,6-diamine and diethyltoluenediamines, in particular 3,5-diethyltoluene-2,4-diamine and / or 3.5 diethyltoluene-2,6-diamine.
  • component (a2) comprises at least one polyfunctional aromatic amine selected from 4,4'-diaminodiphenylmethane, 2,4'-diaminodiphenylmethane, 2,2'-diaminodiphenylmethane and oligomeric diaminodiphenylmethane.
  • Oligomeric diaminodiphenylmethane contains one or more polynuclear methylene bridged condensation products of aniline and formaldehyde.
  • Oligomeric MDA contains at least one, but generally more, oligomers of MDA having a functionality of more than 2, in particular 3 or 4 or 5.
  • Oligomeric MDA is known or can be prepared by methods known per se. Usually, oligomeric MDA is used in the form of mixtures with monomeric MDA.
  • the (average) functionality of a polyfunctional amine of component (a2) containing oligomeric MDA can vary in the range of from about 2.3 to about 5, especially from 2.3 to 3.5 and especially from 2.3 to 3.
  • Such a mixture of MDA-based polyfunctional amines with different functionalities is especially the crude MDA, which is formed in particular in the condensation of aniline with formaldehyde, usually catalyzed by hydrochloric acid, as an intermediate of the production of crude MDI.
  • the at least one polyfunctional aromatic amine particularly preferably contains diaminodiphenylmethane or a derivative of diaminodiphenylmethane.
  • the at least one polyfunctional aromatic amine particularly preferably contains oligomeric diaminodiphenylmethane. It is particularly preferred if component (a2) contains oligomeric diaminodiphenylmethane as compound (a2) and has an overall functionality of at least 2.1. In particular, component (a2) contains oligomeric diaminodiphenylmethane and has a functionality of at least 2.4.
  • substituted multifunctional aromatic amines within component (a2).
  • the abovementioned substituted polyfunctional aromatic amines hereinafter referred to as (a2-s), may be used in mixture with the abovementioned (unsubstituted) diamino-diphenylmethanes (all Q in formula I hydrogen, if not NH 2 ) or else exclusively.
  • Q 2, Q 4, Q 2 'and Q 4' is preferably selected within the scope of Formula I shown above, including the associated definitions so that the compound according to general formula I at least one linear or branched alkyl group, which further functional Groups having from 1 to 12 carbon atoms in the ⁇ position to at least one attached to the aromatic nucleus primary amino group.
  • Q 2 , Q 4 , Q 2 ' and Q 4' in this embodiment are selected such that the substituted aromatic amine (a 2 -s) comprises at least two primary amino groups each having one or two linear or branched alkyl groups of from 1 to Have 12 carbon atoms in the ⁇ -position, which can carry more functional groups.
  • Q 2 , Q 4 , Q 2 ' and Q 4' are selected to correspond to linear or branched alkyl groups having from 1 to 12 carbon atoms bearing further functional groups, then amino groups and / or hydroxy groups and or halogen atoms are preferred as such functional groups.
  • the amines (a2-s) are selected from the group consisting of 3,3 ', 5,5'-tetraalkyl-4,4'-diaminodiphenylmethane, 3,3', 5,5'-tetraalkyl-2,2 ' -diaminodiphenylmethane and 3,3 ', 5,5'-tetraalkyl-2,4'-diaminodiphenylmethane, wherein the alkyl groups in the 3,3', 5 and 5 'position may be the same or different and are independently selected from linear or branched alkyl groups having from 1 to 12 carbon atoms which may carry further functional groups.
  • the aforementioned alkyl groups are methyl, ethyl, n-propyl, i-propyl, n-butyl, sec-butyl or t-butyl (each unsubstituted).
  • one, several or all of the hydrogen atoms of one or more alkyl groups of the substituents Q may be replaced by halogen atoms, in particular chlorine.
  • one, several or all of the hydrogen atoms of one or more alkyl groups of the substituents Q may be replaced by NH 2 or OH.
  • the alkyl groups in the context of the general formula I are composed of carbon and hydrogen.
  • component (a2-s) comprises 3,3 ', 5,5'-tetraalkyl-4,4'-diaminodiphenylmethane, wherein the alkyl groups may be the same or different and are independently selected from linear or branched alkyl groups with From 1 to 12 carbon atoms which may optionally bear functional groups.
  • the abovementioned alkyl groups are preferably selected from unsubstituted alkyl groups, in particular methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl and tert-butyl, more preferably from methyl and ethyl.
  • polyfunctional amines of component (a2) are known per se to the person skilled in the art or can be prepared by known methods.
  • One of the known methods is the reaction of aniline or of derivatives of aniline with formaldehyde under acid catalysis.
  • water as component (a3) may partially replace the polyfunctional aromatic amine by reacting in situ with a then-calculated amount of additional polyfunctional aromatic isocyanate of component (a1) to form a corresponding polyfunctional aromatic amine.
  • the components (a1) to (a3) will hereinafter be referred to collectively as the organic gel precursor (A).
  • the process according to the invention is preferably carried out in the presence of at least one catalyst as component (a4).
  • Suitable catalysts are in principle all catalysts known to those skilled in the art, which is the trimerization of isocyanates (so-called trimerization catalysts) and / or the reaction of isocyanates with amino groups (so-called gel catalysts) and / orpillar water used - the reaction of isocyanates with water (so-called Propellant catalysts).
  • the corresponding catalysts are known per se and have different characteristics with respect to the abovementioned three reactions. Depending on their characteristics, they can thus be assigned one or more of the aforementioned types. It is also known to those skilled in the art that reactions other than those mentioned above may occur.
  • Corresponding catalysts can be characterized inter alia on the basis of their gel to propellant ratio, as known, for example Polyurethanes, 3rd edition, G. Oertel, Hanser Verlag, Kunststoff, 1993, pages 104 to 110 ,
  • preferred catalysts (a4) have a balanced gel to propellant ratio, so that the reaction of component (a1) with water is not accelerated too rapidly and leads to a negative influence on the network structure and simultaneously a short gelation time results, so that the demolding time is advantageously low.
  • Preferred catalysts have a significant at the same time Activity with respect to trimerization. As a result, the homogeneity of the network structure is favorably influenced, resulting in particularly favorable mechanical properties.
  • the catalysts can be a monomer unit (incorporable catalyst) or non-installable.
  • the component (a4) is suitably used in the least effective amount.
  • Preferably used are amounts of from 0.01 to 5 parts by weight, in particular from 0.1 to 3 parts by weight, more preferably from 0.2 to 2.5 parts by weight of component (a4), based on a total of 100 Parts by weight of components (a1), (a2) and (a3).
  • Preferred catalysts in component (a4) are selected from the group consisting of primary, secondary and tertiary amines, triazine derivatives, organometallic compounds, metal chelates, quaternary ammonium salts, ammonium hydroxides and alkali and alkaline earth hydroxides, alkoxides and carboxylates.
  • Suitable catalysts are in particular strong bases, for example quaternary ammonium hydroxides, such as.
  • alkali metal hydroxides such as.
  • potassium or sodium hydroxide and alkali metal alkoxides such.
  • Suitable catalysts are also in particular alkali metal salts of carboxylic acids, such as. As potassium, sodium, potassium acetate, potassium 2-ethylhexanoate, potassium adipate and sodium benzoate, alkali salts of long-chain fatty acids having 8 to 20, in particular 10 to 20 carbon atoms and optionally pendant OH groups.
  • Suitable catalysts are also especially N-hydroxyalkyl quaternary ammonium carboxylates, e.g. Trimethylhydroxypropylammoniumformiat.
  • Suitable organophosphorus compounds are e.g. 1-methylphospholene oxide, 3-methyl-1-phenylphosphite oxide, 1-phenylphospholene oxide, 3-methyl-1-benzylphospholenoxide.
  • Organometalltellen are known to those skilled in particular as gel catalysts per se and as catalysts (a4) are also suitable.
  • Organotin compounds such as e.g. Tin 2-ethylhexanoate and dibutyltin dilaurate are preferred in the context of component (a4).
  • metal acetylacetonates are preferred, in particular zinc acetylacetonate.
  • Tertiary amines are known per se to the person skilled in the art as gel catalysts and as trimerization catalysts. Tertiary amines are particularly preferred as catalysts (a4).
  • Preferred tertiary amines are, in particular, N, N-dimethylbenzylamine, N, N'-dimethylpiperazine, N, N-dimethylcyclohexylamine, N, N ', N "-tris- (dialkylaminoalkyl) -s-hexahydrotriazines, such as, for example, N, N ', N "-tris (dimethylaminopropyl) -s-hexahydrotriazine, Tris (dimethylaminomethyl) phenol, bis (2-dimethylaminoethyl) ether, N, N, N, N, N-pentamethyldiethylenetriamine, methylimidazole, dimethylimidazole, aminopropylimidazole
  • catalysts are selected from the group consisting of N, N-dimethylcyclohexylamine, bis (2-dimethylaminoethyl) ether, N, N, N, N, N-pentamethyldiethylenetriamine, methylimidazole, dimethylimidazole, aminopropylimidazole, dimethylbenzylamine , 1,6-diazabicyclo [5,4,0] undecene-7, tris-dimethylaminopropylhexahydrotriazine, triethylamine, tris (dimethylaminomethyl) phenol, triethylenediamine (diazabicyclo [2,2,2] octane), dimethylaminoethanolamine, dimethylaminopropylamine, N , N-dimethylaminoethoxyethanol, N, N, N-trimethylaminoethylethanolamine, triethanolamine, diethanolamine, triisoprop
  • the use of the preferred catalysts (a4) in the context of the present invention leads to porous materials with improved mechanical properties, in particular to improved compressive strength.
  • the gelation time is reduced, i. H. accelerates the gelation reaction without negatively affecting other properties.
  • the preparation of the organic aerogels or xerogels used according to the invention takes place in the presence of a solvent.
  • solvent in the context of the present invention comprises liquid diluents, that is to say both solvents in the strict sense and dispersants.
  • the mixture may in particular be a true solution, a colloidal solution or a dispersion, e.g. an emulsion or suspension.
  • the mixture is a true solution.
  • the solvent is a compound which is liquid under the conditions of step (a), preferably an organic solvent.
  • Suitable solvents are, in principle, an organic compound or a mixture of several compounds, wherein the solvent is liquid under the conditions of temperature and pressure under which the mixture is provided (in short: solution conditions).
  • the composition of the solvent is chosen so that it is able to dissolve or disperse the organic gel precursor, preferably to dissolve.
  • preferred solvents are those which are a solvent for the organic gel precursor (A), ie those which completely dissolve the organic gel precursor (A) under reaction conditions.
  • the reaction product of the reaction in the presence of the solvent is first a gel, d. H. a viscoelastic chemical network swollen by the solvent.
  • a solvent which is a good swelling agent for the formed network usually results in a network of fine pores and small mean pore diameter, whereas a solvent which is a poor swelling agent for the resulting gel tends to be a coarsely porous network large average pore diameter leads.
  • the choice of solvent thus influences the desired pore size distribution and the desired porosity.
  • the choice of solvent is generally also such that precipitation or flocculation by formation of a precipitated reaction product during or after step (a) of the process of the present invention does not occur as much as possible.
  • the proportion of precipitated reaction product is usually less than 1 wt .-%, based on the total weight of the mixture.
  • the amount of precipitated product formed in a given solvent can be determined gravimetrically by filtering the reaction mixture before the gel point over a suitable filter.
  • Suitable solvents are the solvents known from the prior art for isocyanate-based polymers.
  • Preferred solvents are those which are a solvent for the components (a1), (a2) and optionally (a3), ie. H. those which largely completely dissolve the constituents of components (a1), (a2) and optionally (a3) under reaction conditions.
  • the solvent is inert to component (a1), d. H. not reactive.
  • Suitable solvents are, for example, ketones, aldehydes, alkylalkanoates, amides such as formamide and N-methylpyrollidone, sulfoxides such as dimethyl sulfoxide, aliphatic and cycloaliphatic halogenated hydrocarbons, halogenated aromatic compounds and fluorine-containing ethers. Also suitable are mixtures of two or more of the aforementioned compounds.
  • acetals in particular diethoxymethane, dimethoxymethane and 1,3-dioxolane, are suitable solvents.
  • Dialkyl ethers and cyclic ethers are also suitable as solvents.
  • Preferred dialkyl ethers are in particular those having 2 to 6 carbon atoms, in particular methyl ethyl ether, diethyl ether, methyl propyl ether, methyl isopropyl ether, propyl ethyl ether, ethyl isopropyl ether, dipropyl ether, propyl isopropyl ether, diisopropyl ether, methyl butyl ether, methyl isobutyl ether, Methyl t-butyl ether, ethyl n-butyl ether, ethyl isobutyl ether and ethyl t-butyl ether.
  • Preferred cyclic ethers are in particular tetrahydrofuran, dioxane and tetrahydropyran.
  • alkyl alkanoates in particular methyl formate, methyl acetate, ethyl formate, butyl acetate and ethyl acetate.
  • Preferred halogenated solvents are in the WO 00/24799 , Page 4, line 12 to page 5, line 4 described.
  • Aldehydes and / or ketones are preferred as solvents.
  • Suitable aldehydes or ketones as solvents are in particular those corresponding to the general formula R 2 - (CO) -R 1 , where R 1 and R 2 are hydrogen or alkyl groups having 1 , 2, 3 or 4 carbon atoms.
  • aldehydes or ketones are acetaldehyde, propionaldehyde, n-butyraldehyde, isobutyraldehyde, 2-ethylbutyraldehyde, valeraldehyde, isopentaldehyde, 2-methylpentaldehyde, 2-ethylhexaldehydes, acrolein, methacrolein, crotonaldehyde, furfural, acrolein dimer, methacrolein dimer, 1,2,3, 6-tetrahydrobenzaldehyde, 6-methyl-3-cyclohexene aldehyde, cyanoacetaldehyde, ethyl glyoxylate, benzaldehyde, acetone, diethyl ketone, methyl ethyl ketone, methyl isobutyl ketone, methyl n-butyl ketone, ethyl is
  • ketones can also be used in the form of mixtures. Ketones and aldehydes having alkyl groups of up to 3 carbon atoms per substituent are particularly preferred as the solvent. Very particular preference is given to ketones of the general formula R 1 (CO) R 2 , where R 1 and R 2 are selected, independently of one another, from alkyl groups having 1 to 3 C atoms.
  • the ketone is acetone.
  • at least one of the two substituents R 1 and / or R 2 comprises an alkyl group having at least 2 carbon atoms, in particular methyl ethyl ketone.
  • porous materials having a particularly small mean pore diameter are obtained.
  • the pore structure of the resulting gel is particularly fine-pored due to the higher affinity of the aforementioned particularly preferred ketones.
  • particularly suitable solvents result by using two or more completely miscible compounds selected from the aforementioned solvents in the form of a mixture.
  • step (a) of the process according to the invention it is preferable to provide the components (a1), (a2), optionally (a3) and optionally (a4) and the solvent.
  • the components (a1) on the one hand and (a2) and optionally (a3) and optionally (a4) on the other hand are preferably provided separately from one another in each case in a suitable subset of the solvent.
  • the separate provision allows optimal control of the gelation reaction before and during mixing.
  • component (a3) When water is used as component (a3), component (a3) is more preferably provided separately from component (a1). This avoids the reaction of water with component (a1) to form networks without the presence of component (a2). Otherwise, premixing water with component (a1) will result in less favorable properties with respect to the homogeneity of the pore structure and the thermal conductivity of the resulting materials.
  • the mixture or mixtures provided before carrying out step (a) may contain conventional auxiliaries known to the person skilled in the art as further constituents. Mention may be made, for example, of surfactants, nucleating agents, oxidation stabilizers, lubricants and mold release aids, dyes and pigments, stabilizers, e.g. against hydrolysis, light, heat or discoloration, inorganic and / or organic fillers, reinforcing agents and biocides.
  • step (a) of the process In order to carry out the reaction according to step (a) of the process, first of all a homogeneous mixture of the components provided before the reaction according to step (a) has to be produced.
  • step (a) The provision of the components converted in step (a) can be carried out in a customary manner. Preference is given to a stirrer or other mixing device is used to achieve a good and fast mixing.
  • the time required to produce the homogeneous mixture should be small relative to the length of time that the gelation reaction results in the at least partial formation of a gel to avoid mixing errors.
  • the other mixing conditions are generally not critical, for example, at 0 to 100 ° C and 0.1 to 10 bar (absolute), in particular, e.g. at room temperature and atmospheric pressure. After the production of a homogeneous mixture, the mixing apparatus is preferably switched off.
  • the gelation reaction is a polyaddition reaction, in particular a polyaddition of isocyanate groups and amino or hydroxy groups.
  • a gel is understood as meaning a crosslinked system based on a polymer which is in contact with a liquid (so-called solvogel or lyogel, or with water as liquid: aquagel or hydrogel).
  • solvogel or lyogel or with water as liquid: aquagel or hydrogel.
  • the polymer phase forms a continuous spatial network.
  • the gel is usually formed by resting, for example by simply leaving the container, reaction vessel or reactor in which the mixture is located (hereinafter called gelling device).
  • gelling device Preference is given during gelling does not agitate or agitate the mixture, as this may hinder the formation of the gel. It has proved to be advantageous to cover the mixture during gelling or to close the gelling device.
  • the solvent is removed in the course of step (b) (drying).
  • drying under supercritical conditions comes into consideration, preferably after replacement of the solvent by CO 2 or other solvents suitable for supercritical drying purposes.
  • Such drying is known per se to the person skilled in the art.
  • Supercritical conditions indicate a temperature and pressure at which the fluid phase to be removed is in the supercritical state. This can reduce the shrinkage of the gel body during removal of the solvent.
  • the material obtained from the supercritical drying is called airgel.
  • the process it is preferable to dry the obtained gels by converting the liquid contained in the gel to the gaseous state at a temperature and a pressure below the critical temperature and the critical pressure of the liquid contained in the gel.
  • the material obtained from the subcritical drying is called xerogel.
  • the drying of the resulting gel is carried out by converting the solvent to the gaseous state at a temperature and a pressure below the critical temperature and the critical pressure of the solvent. Accordingly, drying preferably occurs by removal of the solvent present in the reaction without prior replacement with another solvent.
  • Appropriate methods are also known in the art and are described in the WO-2009/027310 on page 26, line 22 to page 28, line 36 described.
  • organic porous materials are obtained which have good properties for use as insulating material.
  • an organic porous material used as an insulating core in the composite elements has a density in the range from 70 to 300 kg / m 3 , in particular in the range from 75 to 250 kg / m 3 , more preferably in the range from 85 to 220 kg / m 3 , more preferably in the range of 90 to 200 kg / m 3 .
  • the organic porous material has a density in the range of 70 to 300 kg / m 3 .
  • Preferred organic porous materials also have a temperature resistance which allows the profile to be continuously built around the insulating core, i. For example, they are stable when extruding a profile. Accordingly, preferred organic porous materials have a temperature resistance greater than 160 ° C.
  • the organic porous material has a temperature resistance of greater than 160 ° C.
  • the preferably used organic aerogels and xerogels have property profiles which, on the one hand, ensure good thermal insulation of the composite elements and, on the other hand, enable the simple production of the composite elements due to their stability.
  • the insulating core may generally have any desired shape that appears to those skilled in the art suitable for the desired application.
  • the insulating core may have a round and / or angular shape.
  • the core may be formed uniformly or unevenly, and for example, recesses, grooves, edges, etc., which profiles may be parallel but also perpendicular to the direction of production.
  • the insulating core generally has dimensions of 5 to 250 mm, preferably 10 to 150 mm, particularly preferably 15 to 100 mm, in particular 20 to 80 mm, these dimensions describing unevenly shaped cores the largest distances present in one direction.
  • the composite element produced according to the invention contains exactly one insulating core made of an organic porous material. It is also possible according to the invention for the composite element to have two, three or four cores of an organic porous material. In the event that two, three or four cores are present in the composite element according to the invention, they may be the same or different in their shape. According to the invention it is also possible that the composite element comprises at least one insulating core made of an organic porous material and at least one other of a different material, for example a polyurethane foam.
  • the composite element has a profile, wherein the profile can basically consist of any conceivable suitable material, in particular of thermoplastically processable materials or of aluminum.
  • the profile encloses the Dämmkern partially or completely, preferably completely. Furthermore, in a preferred embodiment, the profile has webs which are connected to it.
  • the profile itself, or the profile and the optionally present webs of the profile generally have a thickness of 1 to 20 mm, preferably 2 to 15 mm, particularly preferably 3 to 10 mm, wherein the profile and the webs different or the same Thicknesses may have.
  • the jacket or webs have different thicknesses at different points of the profile, the thicknesses being the same in the longitudinal direction but may be different in the transverse direction. This depends, for example, on the shape of the profile, which in turn depends on the later application.
  • the profile of the composite element to be produced according to the invention preferably contains at least one thermoplastic material.
  • thermoplastic materials are known per se to those skilled in the art and are selected, for example, from the group consisting of polyolefins, for example acrylonitrile-butadiene-styrene (ABS), polymethyl methacrylate (PMMA), polyethylene (PE), polypropylene (PP), polystyrene (PS) or polyvinyl chloride (PVC), polycondensates such as polyamides (PA), for example PA 6 or PA 6,6, polylactate (PLA), polycarbonates (PC), polyesters, for example polyethylene terephthalate (PET), polyetheretherketone (PEEK), polyaddition products such as thermoplastic polyurethane, wood plastic composites and mixtures thereof.
  • the jacket of the profile produced according to the invention contains polyvinyl chloride (PVC).
  • Polyvinyl chloride (PVC) and its preparation by polymerization of vinyl chloride are known per se to those skilled in the art.
  • the profile preferably consists of polyvinyl chloride or aluminum.
  • the profile is made of polyvinyl chloride.
  • the profile contains a thermoplastic material having a melting point below 220 ° C.
  • the profile is built around the insulating core around. This simplifies the manufacturing process of the composite element, since the formation of hollow bodies in the profile is facilitated because the insulating core dictates the shape of the hollow body.
  • the invention thus relates to a continuous process for producing a composite element comprising a profile and an insulating core at least partially enclosed by the profile, wherein the insulating core consists of an organic porous material, which determines a thermal conductivity in the range of 13 to 30 mW / m * K according to DIN 12667, and a compressive strength greater than 0.20 N / mm 2 , determined according to DIN 53421, wherein the profile is built around the insulating core around.
  • the insulating core is produced in the desired shape, is stored and then further processed.
  • the structure of the profile is done by means of a ring extruder.
  • the present invention accordingly relates to a method for producing a composite element comprising a profile and an insulating core at least partially enclosed by the profile as described above, wherein the profile consists of polyvinyl chloride.
  • the composite element is produced by means of a ring extruder.
  • the method comprises introducing the insulating core into an extruder with an attached extrusion die for producing ring profiles, in order to envelop the insulating core with a profile of at least one thermoplastic material in order to obtain the composite element.
  • the insulating core is introduced into an extruder containing a nozzle which is modeled on the shape of the profile.
  • the thermoplastic material which is to form the jacket is then applied in molten form to the core.
  • Embodiments of this extruder used according to the invention are generally known to the person skilled in the art and are described, for example, in US Pat WO 2009/098068 ,
  • the process according to the invention is preferably carried out at a temperature at which the thermoplastic material of the profile has melted, for example from 100 to 220 ° C., particularly preferably from 130 to 190 ° C.
  • a temperature is preferably at which the thermoplastic material solidifies, for example 25 to 180 ° C, preferably 50 to 150 ° C.
  • thermoplastic materials are known per se to the person skilled in the art and described, for example, in US Pat. Introduction to plastics processing ", 5th edition, September 2006, pp. 87-180, Walter Michaeli, Hanser Anlagenverlag ,
  • a reinforcement is introduced into the profile, then it can be fully formed, for example as a strip, fed to the extruder.
  • the reinforcement is extruded simultaneously with the jacket of the profile in the extruder.
  • the material of the reinforcement preferably in the molten state, fed through the extruder.
  • the reinforcement has in a preferred embodiment dimensions which are dependent on the dimensions of the profile and allow the highest possible stability of the reinforced profile.
  • the reinforcement is designed so that a heat transport within the profile, for example in window or door frames, reduced or at least not increased.
  • the composite elements have a low thermal conductivity with constant insulation thickness, which makes them suitable for use for components, such as windows or doors.
  • the present invention also relates to the use of a composite element obtainable by a method according to the invention for the production of windows, doors, refrigerators and chests or elements for facade construction.
  • step (a) 80 g of compound M200 were dissolved with stirring at 20 ° C in 220 g of 2-butanone in a beaker. 8 g of the compound MDEA and 8 g of butyldiethanolamine and 1 g of water were dissolved in 220 g of 2-butanone in a second beaker. The two solutions from step (a) were mixed. A clear, low-viscosity mixture was obtained. The mixture was allowed to cure at room temperature for 24 hours. The gel was then removed from the beaker and dried in an autoclave by solvent extraction with supercritical CO 2 .
  • the gel monolith was removed from the beaker and transferred to a 25 L autoclave.
  • the autoclave was filled with> 99% acetone so that the monolith was completely covered by acetone and then sealed. This can prevent shrinkage of the monolith from occurring by evaporation of the organic solvent before the monolith comes in contact with supercritical CO 2 .
  • the monolith was dried in CO 2 stream for 24 h.
  • the pressure (in the drying system) was between 115-120 bar; the temperature was 40 ° C. At the end, the pressure in the system was controlled to reduce to atmospheric pressure within about 45 minutes at a temperature of 40 ° C.
  • the autoclave was opened and the dried monolith was removed.
  • the obtained porous material had a density of 150 g / L.
  • the thermal conductivity ⁇ was determined according to DIN EN 12667 with a disk device from Hesto (Lambda Control A50). The thermal conductivity was 20.0 mW / m * K at 10 ° C.
  • the tensile strength was determined according to DIN 53292 and was 0.87 N / mm 2 .
  • the modulus of elasticity was according to DIN 53292 and was 15.3 N / mm 2 .
  • step (a) 80 g of compound M200 were dissolved with stirring at 20 ° C in 220 g of 2-butanone in a beaker. 8 g of the compound MDEA and 8 g of butyldiethanolamine and 2 g of water were dissolved in 220 g of 2-butanone a second beaker. The two solutions from step (a) were mixed. A clear, low-viscosity mixture was obtained. The mixture was allowed to cure at room temperature for 24 hours. The gel was then removed from the beaker and dried in an autoclave by solvent extraction with supercritical CO 2 .
  • the gel monolith was removed from the beaker and transferred to a 25 L autoclave.
  • the autoclave was filled with> 99% acetone so that the monolith was completely covered by acetone and then sealed. This can prevent shrinkage of the monolith from occurring by evaporation of the organic solvent before the monolith comes in contact with supercritical CO 2 .
  • the monolith was dried in CO 2 stream for 24 h.
  • the pressure (in the drying system) was between 115-120 bar; the temperature was 40 ° C. At the end, the pressure in the system was controlled to reduce to atmospheric pressure within about 45 minutes at a temperature of 40 ° C.
  • the autoclave was opened and the dried monolith was removed.
  • the obtained porous material had a density of 153 g / L.
  • the thermal conductivity ⁇ was determined according to DIN EN 12667 with a disk device from Hesto (Lambda Control A50). The thermal conductivity was 21, 0 mW / m * K at 10 ° C.
  • the compressive strength was determined according to DIN 53421 and was 0.64 N / mm 2 at a compression of 5.3%.
  • the modulus of elasticity was 31 N / mm 2 .
  • step (a) 80 g of compound M200 were dissolved with stirring at 20 ° C in 250 g of ethyl acetate in a beaker. 8 g of the compound MDEA and 8 g of methyldiethanolamine were dissolved in 250 g of ethyl acetate in a second beaker. The two solutions from step (a) were mixed. A clear, low-viscosity mixture was obtained. The mixture was allowed to cure at room temperature for 24 hours. The gel was then removed from the beaker and dried in an autoclave by solvent extraction with supercritical CO 2 .
  • the gel monolith was removed from the beaker and transferred to a 25 L autoclave.
  • the autoclave was filled with> 99% acetone so that the monolith was completely covered by acetone and then sealed. This can prevent shrinkage of the monolith from occurring by evaporation of the organic solvent before the monolith comes in contact with supercritical CO 2 .
  • the monolith was dried in CO 2 stream for 24 h.
  • the pressure (in the drying system) was between 115-120 bar; the temperature was 40 ° C. At the end, the pressure in the system was controlled to reduce to atmospheric pressure within about 45 minutes at a temperature of 40 ° C.
  • the autoclave was opened and the dried monolith was removed.
  • the obtained porous material had a density of 110 g / L.
  • the thermal conductivity ⁇ was determined according to DIN EN 12667 with a disk device from Hesto (Lambda Control A50). The thermal conductivity was 20.0 mW / m * K at 10 ° C.
  • the compressive strength was 0.52 N / mm 2 at a compression of 10%.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Architecture (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Refrigerator Housings (AREA)
  • Physics & Mathematics (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Electromagnetism (AREA)
  • Thermal Insulation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Acoustics & Sound (AREA)

Claims (6)

  1. Procédé continu de fabrication d'un élément composite comprenant un profilé et un noyau isolant au moins partiellement entouré par le profilé, le noyau isolant étant constitué d'un matériau organique poreux, qui présente une conductivité thermique dans la plage allant de 13 à 30 mW/m*K, déterminée selon DIN 12667, et une résistance à la compression supérieure à 0,20 N/mm2, déterminée selon DIN 53421, le profilé étant formé autour du noyau isolant,
    caractérisé en ce que le matériau organique poreux est choisi dans le groupe constitué par les xérogels organiques ou les aérogels organiques ou les combinaisons de deux ou plus d'entre eux,
    le profilé étant formé au moyen d'une extrudeuse annulaire en continu autour du noyau isolant.
  2. Procédé selon la revendication 1, dans lequel le profilé est constitué de polychlorure de vinyle.
  3. Procédé selon l'une quelconque des revendications 1 ou 2, dans lequel le matériau organique poreux est choisi dans le groupe constitué par les xérogels organiques à base de polyuréthane, de polyisocyanurate ou de polyurée, les aérogels organiques à base de polyuréthane, de polyisocyanurate ou de polyurée ou les combinaisons de deux ou plus d'entre eux.
  4. Procédé selon l'une quelconque des revendications 1 à 3, dans lequel le matériau organique poreux présente une densité dans la plage allant de 70 à 300 kg/m3.
  5. Procédé selon l'une quelconque des revendications 1 à 4, dans lequel le matériau organique poreux présente une résistance à la température de plus de 160 °C.
  6. Utilisation d'un élément composite pouvant être obtenu par un procédé selon l'une quelconque des revendications 1 à 5 pour la fabrication de fenêtres, de portes, de réfrigérateurs et de congélateurs ou d'éléments pour la construction de façades.
EP13785874.2A 2012-11-05 2013-11-04 Procédé de fabrication d'éléments profilés Not-in-force EP2914795B1 (fr)

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US10100513B2 (en) 2012-11-05 2018-10-16 Basf Se Process for producing profiled elements
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EP4121469A1 (fr) 2020-03-17 2023-01-25 aerogel-it GmbH Matériau d'isolation thermique mince et flexible faisant appel à un aérogel organique monolithique
KR102857532B1 (ko) 2025-05-29 2025-09-10 주식회사 세중씨엔지 복합재료로된 지지구조물 제조방법

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JP2015536849A (ja) 2015-12-24
RU2015121321A (ru) 2016-12-27
AU2013340732A1 (en) 2015-05-21
RU2641083C2 (ru) 2018-01-15
KR20150082550A (ko) 2015-07-15
JP2019073720A (ja) 2019-05-16
EP2914795A1 (fr) 2015-09-09
KR102115257B1 (ko) 2020-05-27
JP6755297B2 (ja) 2020-09-16
CN104781491A (zh) 2015-07-15
MX2015005658A (es) 2016-03-03
WO2014068105A1 (fr) 2014-05-08
DK2914795T3 (en) 2017-06-06
CN109488160A (zh) 2019-03-19

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