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EP3500537A1 - Corps moulé poreux sous la forme d'une couche de plâtre isolant ou d'une plaque isolante - Google Patents

Corps moulé poreux sous la forme d'une couche de plâtre isolant ou d'une plaque isolante

Info

Publication number
EP3500537A1
EP3500537A1 EP16754275.2A EP16754275A EP3500537A1 EP 3500537 A1 EP3500537 A1 EP 3500537A1 EP 16754275 A EP16754275 A EP 16754275A EP 3500537 A1 EP3500537 A1 EP 3500537A1
Authority
EP
European Patent Office
Prior art keywords
cell
weight
composite particles
inorganic solid
mixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16754275.2A
Other languages
German (de)
English (en)
Inventor
Abdulmajid Hashemzadeh
Harald Zeh
Peter Asbeck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wacker Chemie AG
Original Assignee
Wacker Chemie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wacker Chemie AG filed Critical Wacker Chemie AG
Publication of EP3500537A1 publication Critical patent/EP3500537A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/005—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing gelatineous or gel forming binders, e.g. gelatineous Al(OH)3, sol-gel binders
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/30—Oxides other than silica
    • C04B14/301—Oxides other than silica porous or hollow
    • C04B14/302—Aerogels
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    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/06—Quartz; Sand
    • C—CHEMISTRY; METALLURGY
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    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/30—Oxides other than silica
    • C04B14/303—Alumina
    • C—CHEMISTRY; METALLURGY
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    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/30—Oxides other than silica
    • C04B14/305—Titanium oxide, e.g. titanates
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    • C04B14/307—Chromium oxide
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    • C04B16/04—Macromolecular compounds
    • C04B16/08—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons
    • C04B16/082—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons other than polystyrene based, e.g. polyurethane foam
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    • C04B26/06—Acrylates
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    • C04B28/04—Portland cements
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    • C04B28/06—Aluminous cements
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    • C04B28/10—Lime cements or magnesium oxide cements
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    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
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    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
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    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
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    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
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    • C04B40/02—Selection of the hardening environment
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    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/06—Quartz; Sand
    • C04B14/064—Silica aerogel
    • C—CHEMISTRY; METALLURGY
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    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/14—Minerals of vulcanic origin
    • C04B14/18—Perlite
    • C04B14/185—Perlite expanded
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    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/22—Glass ; Devitrified glass
    • C04B14/24—Glass ; Devitrified glass porous, e.g. foamed glass
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    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials
    • C04B2111/00517—Coating or impregnation materials for masonry
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    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/40—Porous or lightweight materials
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    • C04B24/2641—Polyacrylates; Polymethacrylates
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    • C04B24/42—Organo-silicon compounds

Definitions

  • Porous shaped body in the form of a DämmputzSchicht or an insulating board in the form of a DämmputzSchicht or an insulating board
  • the invention relates to porous moldings in the form of a Dämimputz- layer or an insulating board, a process for producing these porous moldings and mortar mixtures for the production of the porous moldings.
  • CH 710 162 A2 describes expanded polystyrene or polyurethane thermal insulation panels which are provided with a fire protection layer containing hollow spheres of expanded and closed-cell silica sands which are bonded to one another and to the panel with a mineral binder
  • WO 2015/056138 A1 describes panels for thermal insulation and fire protection, which are obtained by blowing expanded perlite in a mixture with a mineral binder such as cement or with an organic binder into a mold or casting it and hardening it.
  • WO 2015/056139 A2 relates to a mortar mixture for thermal insulation and fire protection, which consists of closed-cell spheres of expanded silica sand or expanded perlite and an inorganic or organic binder and optionally other additives.
  • EP 2 899 174 A2 describes a process for the thermal insulation of structures wherein closed and air-filled spheres of expanded silica sand or expanded perlite in combination with a cementitious binder are pumped into cavities and interspaces of the walls of these structures.
  • WO 2012/031717 A1 describes a smoke-tight and heat-insulating fire protection molding which contains at least one light filler, a thermally cured hybrid binder with inorganic see and organic components and a dehydrating material such as aluminum trihydrate and fibers or wollastonite.
  • a dehydrating material such as aluminum trihydrate and fibers or wollastonite.
  • inorganic binders such as gypsum, cement or water glass are used, or organic binders such as aqueous polymer dispersions used.
  • the mineral bonded insulation materials are not flammable, but are brittle and have a low flexibility.
  • the organically bound insulating materials are flexible but easily flammable.
  • the invention relates to a porous molded body in the form of a Dämmputz Anlagen or an insulating board comprising closed-cell or open-cell or mixed-cell hollow body of inorganic materials and a binder, characterized in that as binder composite particles are contained, wherein the composite particles at least one organic polymer and at least one inorganic solid contain, wherein the weight fraction of inorganic solid 15 to 50 wt .-%, based on the total weight of organic polymer and inorganic solid in the composite particle.
  • Composite particles are known in the art and are commercially available and may be in the form of their aqueous dispersions or as water-dispersible polymer powders.
  • WO 03/000760 A1 relates to a process for preparing a composite particle dispersion of inorganic solid particles and organic polymer by means of polymerization of a monomer mixture which contains small amounts of silicon-functional monomer in the presence of a dispersion of inorganic solid particles. The resulting products are recommended as binders for coatings, adhesives and mortar compounds.
  • WO 2004/035474 A1 discloses aqueous composite particle dispersions which are obtained by mixing aqueous dispersions of silanized silica particles with aqueous polymer dispersions.
  • WO 2009/112370 Al describes a process for the preparation of a Compartiparticle dispersion by condensation of one or more alkoxysilanes in a basic aqueous polymer dispersion.
  • the silica sol may be prepared separately by condensation of alkoxysilane and then blended with an aqueous polymer dispersion.
  • those in coatings and adhesives are recommended.
  • WO 2012/110618 A1 relates to a process for the preparation of modified composite particles by mixing an aqueous polymer dispersion and an aqueous silica sol and subsequent polymerization of monomers in this mixture. As applications, those already described above are described.
  • WO 2012/022667 A1 describes the preparation of composite particle dispersions by polymerization of ethylenically unsaturated monomers in the presence of inorganic solids dispersed in water, wherein epoxysilane is added during or after the polymerization in order to improve the storage stability of the dispersion thus obtained.
  • Composite particles comprise an organic polymer phase and finely divided, inorganic solid particles dispersed therein, which are preferably linked to the polymer chains of the organic polymer phase via physical bonds (for example via carboxyl-functional monomer units in the polymer) or via chemical bonds (for example via silicon-functional monomer units in the polymer) are.
  • the particle size is the weight-average particle size dw, determined by means of random light scattering measurement, for example with the Nanosizer from Coulter.
  • Suitable metal oxides are, for example, the oxides of titanium, zirconium, aluminum, barium, magnesium or iron. Such metal oxides are commercially available, for example titanium dioxide, zirconium
  • silica As a preferred semi-metal oxide is called silica.
  • Silica may be in amorphous form and / or in different crystal structures. Silica may, for example, be in the form of water glass or silica sols. Silica suitable is also known under the trade names Aerosil ®, Nalco ®, Levasil® ®, Ludox ®, Nyacol ®, ® and Bindzil Snowtex ®.
  • silica sols and silica sols modified with aluminate or epoxy silane are prepared.
  • an aqueous aluminate solution for example NaAl (OH) 4
  • an epoxysilane for example 3-glycidoxypropyltrimethoxysilane
  • the preparation of the finely divided inorganic solids is known to the person skilled in the art and is carried out, for example, by precipitation reactions or chemical reactions in the gas phase (cf., for this purpose, E. Matijevic, Chem., 1993, 5, pages 412 to 426, Ullmann's Encyclopedia of Industrial Chemistry, Vol. A 23, pages 583 to 660, Verlag Chemie, Weinheim, 1992.
  • Suitable ethylenically unsaturated monomers for the preparation of the aqueous dispersion of the organic polymer are vinyl esters of unbranched or branched alkylcarboxylic acids having 1 to 15 C atoms, methacrylic acid esters and acrylic esters of alcohols having 1 to 15 C atoms, vinylaromatics, olefins, dienes or vinyl halides.
  • vinyl esters are vinyl acetate, vinyl propionate, vinyl butyrate, vinyl 2-ethylhexanoate, vinyl laurate, 1-methylvinyl acetate, vinyl pivalate and vinyl esters of alpha-branched monocarboxylic acids having 9 to 13 carbon atoms, for example VeoVa9® or VeoValO® (trade names of Momentive ). Particularly preferred is vinyl acetate.
  • Preferred methacrylic acid esters or acrylic esters are methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate, n-butyl acrylate, n-butyl methacrylate, 2-ethylhexyl acrylate, norbornyl acrylate. Particularly preferred are methyl acrylate, methyl methacrylate, n-butyl acrylate and 2-ethylhexyl acrylate.
  • Examples of olefins and dienes are ethylene, propylene and 1,3-butadiene.
  • Suitable virus nylaromaten are styrene and vinyltoluene.
  • a preferred vinyl halide is vinyl chloride.
  • wt .-% Preferably, from 0.05 to 20 wt .-%, particularly preferably 1 to 10 wt .-%, based on the total weight of the monomers, copolymerized one or more functional comonomers.
  • functional comonomers are ethylenically unsaturated mono- and dicarboxylic acids, preferably acrylic acid, methacrylic acid, fumaric acid and maleic acid, and maleic anhydride; ethylenically unsaturated carboxylic acid amides and nitriles, preferably acrylamide and acrylonitrile;
  • ethylenically unsaturated sulfonic acids or salts thereof preferably vinylsulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid.
  • functional comonomers are also epoxide-functional comonomers such as glycidyl methacrylate and glycidyl acrylate.
  • functional comonomers are silicon-functional comonomers, such as acyloxypropyltri (alkoxy) - and methacryloxypropyltri (alkoxy) silanes, wherein as alkoxy groups, for example, methoxy, ethoxy and ethoxy propylene glycol ether radicals may be contained, such as methacryloxypropyltrimethoxysilane, vinyltrialkoxysilanes and vinylmethyldialkoxysilanes such as vinyltrimethoxysilane or vinyltriethoxysilane or vinylmethyldimethoxysilane.
  • alkoxy groups for example, methoxy, ethoxy and ethoxy propylene glycol ether radicals may be contained, such as methacryloxypropyltrimethoxysilane, vinyltrialkoxysilanes and vinylmethyldialkoxysilanes such as vinyltrimethoxysilane or vinyltriethoxysilane or vinylmethyldimethoxysilane
  • organic polymers the polymers of vinyl esters, in particular vinyl acetate, with 3 to 12 wt .-% of ethylenically unsaturated carboxylic acids, such as acrylic acid or methacrylic acid, and optionally 0.1 to 3 wt .-% of ethylenically unsaturated silanes, such as Vinyltrimethoxysilane, vinyltriethoxysilane, vinylmethyldimethoxysilane or vinylmethyldiethoxysilane;
  • the polymers of vinyl esters in particular vinyl acetate, with from 0.1 to 3% by weight of ethylenically unsaturated silanes, such as vinyltrimethoxysilane, vinyltriethoxysilane, vinylmethyldimethoxysilane or vinylmethyldiethoxysilane; wherein the polymers may each contain from 5 to 45 wt .-% of one or more monomer units, from the group comprising to the copolymerized vinyl esters various vinyl esters of unbranched or branched alkylcarboxylic acids having 3 to 15 carbon atoms, methacrylic acid esters and acrylic esters of alcohols with 1 to 15 carbon atoms, styrene, ethylene, butadiene and vinyl chloride, and wherein the information in wt .-% add up to 100 wt .-%.
  • silanes such as vinyltrimethoxysilane, vinyltriethoxysilane, vinylmethyldimethoxysilane or vinylmethyldieth
  • organic polymers are the polymers of (meth) acrylic esters of alcohols having 1 to 15 C atoms, such as methyl (meth) acrylate and / or n-butyl (meth) acrylate, with 3 to 12% by weight of ethylenic unsaturated carboxylic acids, such as acrylic acid or methacrylic acid, and optionally from 0.1 to 3 wt .-% of ethylenically unsaturated silanes, such as vinyltrimethoxysilane, vinyltriethoxysilane, vinylmethyldimethoxysilane or vinylmethyldiethoxysilane, and optionally from 0.1 to 50 wt .-%, preferably 5 to 30% by weight of styrene;
  • polymers of (meth) acrylic acid esters of alcohols having 1 to 15 carbon atoms such as methyl (meth) acrylate and / or n-butyl (meth) acrylate, with 0.1 to 3 wt .-% of ethylenically unsaturated silanes, such as Vinyltrimethoxysilane, vinyltriethoxysilane, vinylmethyldimethoxysilane or vinylmethyldiethoxysilane, and optionally 0.1 to 50% by weight, preferably 5 to 30% by weight of styrene;
  • ethylenically unsaturated silanes such as Vinyltrimethoxysilane, vinyltriethoxysilane, vinylmethyldimethoxysilane or vinylmethyldiethoxysilane, and optionally 0.1 to 50% by weight, preferably 5 to 30% by weight of styrene;
  • the organic polymers may be prepared by polymerization methods well known to those skilled in the art: the suspension or miniemulsion or, preferably, the emulsion polymerization process as described, for example, in the Encyclopedia of Polymer Science and Engineering, Vol. 8, pp. 659-677, John Wiley and Sons, Inc. , 1987 or in DE 10 2006 050 336 AI described.
  • the ethylenically unsaturated monomers are polymerized in the aqueous medium in the presence of emulsifier and / or protective colloid by means of free-radically initiated polymerization.
  • the choice of monomers or the selection of the weight proportions of the comonomer takes place in such a way that generally a glass transition temperature Tg of -50 ° C to + 50 ° C results.
  • the glass transition temperature Tg of Polymers can be determined in a known manner by means of DSC (Dynamic Differential Thermal Analysis, DIN EN ISO 11357-1 / 2), for example with the dynamic differential calorimeter DSC1 from Mettler-Toledo in an open crucible at a heating rate of 10 K / min.
  • DSC Dynamic Differential Thermal Analysis, DIN EN ISO 11357-1 / 2
  • DSC1 Dynamic Differential Thermal Analysis, DIN EN ISO 11357-1 / 2
  • the dynamic differential calorimeter DSC1 from Mettler-Toledo in an open crucible at a heating rate of 10 K / min.
  • the Tg can also be approximated by the Fox equation. After Fox T. G.
  • Tgn is the glass transition temperature in Kelvin of the homopolymer of the monomer n. Tg values for homopolymers are listed in Polymer Handbook 2nd Edition, J. Wiley & Sons, New York (1975).
  • the preparation of the composite particles containing an organic polymer and finely divided, inorganic solid particles can be carried out by means of the processes mentioned above as prior art.
  • the finely divided, inorganic solid particles are preferably used in the form of a stable, aqueous solid dispersion.
  • a finely divided, inorganic solids-containing, aqueous dispersion is added during the polymerization in the preparation of the organic polymer or added to the finished polymer dispersion.
  • the said mixing operations are preferably carried out at a temperature of 20 to 70 ° C over a period of preferably 1 to 12 hours.
  • the composite particles have at least in part a core-shell structure. In it, the inorganic particles form a core and the polymeric chains form a shell.
  • the proportion by weight of inorganic solid in the composite particles is preferably 15 to 50 wt .-%, particularly preferably 20 to 40 wt .-%, each based on the total weight of organic polymer and inorganic solid in the composite particle.
  • the composite particles thus obtainable are generally in the form of an aqueous dispersion, preferably with a solids content of 40 to 70%, more preferably 45 to 65% and most preferably 50 to 60%.
  • the dispersions of the composite particles preferably have a viscosity of from 65 to 3,000 mPas and more preferably from 75 to 2,000 mPas, in particular from 80 to 900 mPas (Brookfield viscosity at 25 ° C. as 50% dispersion in water and 20 rpm).
  • the particle size of the composite particles is between 5 and 5000 nm.
  • the preferred particle size is between 50 and 500 nm.
  • the particle size is in each case the weight-average particle size dw, determined by means of random light scattering measurement, for example with the Nanosizer from Coulter.
  • the dispersions of the modified composite particles can be spray-dried, if appropriate with the addition of protective colloids as a drying aid.
  • Polyvinyl alcohols are preferably used as drying auxiliaries.
  • the spray drying is carried out in conventional spray drying systems, wherein the atomization can be done by means of one-, two- or multi-fluid nozzles or with a rotating disk.
  • the exit temperature is generally selected in the range of 45 ° C to 120 ° C, preferably between 60 ° C to 90 ° C.
  • the powder thus obtained can be equipped with an antiblocking agent. Examples of antiblocking agents are calcium carbonate, talc, silicas, kaolins.
  • the resulting composite particles in the form of powders can be brought into the desired shape by subsequent grinding and / or redispersion in water, organic solvents or reactive diluents.
  • Suitable closed-cell or open-cell or mixed-cell hollow bodies of inorganic materials are known to the person skilled in the art and are commercially available, for example aerogels of silicate, expanded silica sand or expanded perlite or glass hollow spheres.
  • the mortar compositions for the insulating plaster layer contain 10 to 50 wt .-% closed-cell or open-cell or mixed-cell hollow bodies of inorganic materials, 5 to 20 wt .-% composite particles, 40 to 80 wt .-%, fillers, 0 to 20 wt. % mineral binders and / or polymeric binders, and optionally from 0.1 to 10% by weight of further additives, in each case based on the total weight of the dry composition without water, and the data in% by weight being in each case 100% by weight add up.
  • compositions are suitable with 10 to 80 wt .-% closed-cell or open-cell or mixed cellular hollow bodies of inorganic materials, 5 to 20 wt .-% composite particles, 10 to 40 wt .-%, fillers, 0 to 20 % By weight of mineral binders and / or polymeric binders, and optionally from 0.1 to 10% by weight of further additives, in each case based on the total weight of the dry composition without water, and wherein the data in% by weight are each based on 100% by weight Add up .-%.
  • suitable fillers are quartz sand, calcium carbonate, dolomite, aluminum silicates, clay, chalk, hydrated lime, talc or mica. It is also possible to use any desired mixtures of the stated fillers. Preference is given to quartz sand, quartz flour, calcium carbonate, chalk or hydrated lime.
  • Suitable mineral binders are, for example, cements, in particular Portland cement, aluminate cement, magnesia cement, metallurgical cement and mixed cement, pozzolan, lime and gypsum.
  • Suitable polymeric binders are vinyl ester polymers such as vinyl acetate-ethylene polymers or (meth) acrylic acid ester polymers, styrene-acrylic acid ester polymers or styrene-butadiene polymers, which are present in the form of their aqueous polymer dispersions or in the form of their Water-dispersible polymer powder can be used for the preparation of the mortar composition.
  • vinyl ester polymers such as vinyl acetate-ethylene polymers or (meth) acrylic acid ester polymers, styrene-acrylic acid ester polymers or styrene-butadiene polymers, which are present in the form of their aqueous polymer dispersions or in the form of their Water-dispersible polymer powder can be used for the preparation of the mortar composition.
  • additives for the (mortar) compositions are thickeners, for example polysaccharides such as cellulose ethers and modified cellulose ethers, starch ethers, phyllosilicates, polycarboxylic acids such as polyacrylic acid and their partial esters, as well as Polyvi- nylalkohole which may optionally be acetalated or hydrophobically modified, casein and associative acting thickener.
  • Typical additives in particular for improving the mechanical strength of insulating boards, are organic or mineral fiber materials.
  • water repellents, preservatives, film-forming aids, dispersants, foam stabilizers, defoamers and flame retardants are used in the usual amounts depending on the type of additive. Preferably dehydrating minerals such as aluminum trihydrate are not used.
  • the mortar compositions are mixed in a known manner with water and processed as Dämimputztik, that is applied to a substrate, for example, sprayed by means of a plastering machine on a masonry and then pulled smooth.
  • compositions are mixed in known manner with water and pressed into a mold or cast and then cured with or without heat input.
  • the following examples serve to further explain the invention:
  • the temperature was raised to 80 ° C and. After reaching this temperature, the initiator solution (1.4 g of potassium peroxodisulfate in 86.8 g of water) was metered in within 3 hours, at the same time a solution with the following was added separately over 2.5 hours
  • the solution thus obtained had a solids content of 42.7% and a silica content of 10% by weight, based on the total solids content.
  • composite dispersion with 30% by weight of silica (composite dispersion 3):
  • the solution thus obtained had a solids content of 41.6% and a silica content of 45% by weight, based on the total solids content.
  • the determination of the deformation was carried out according to DIN EN 12002.
  • the fracture path was determined using the 3-point bending test according to DIN EN 12002.
  • the formulations from Table 1 were used. The raw materials were stirred together and poured into a mold (1.5 cm thick, 4.5 cm wide and 28 cm long). After one week of drying time, the insulation boards (test specimens) were removed from the mold.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Civil Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Paints Or Removers (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Nanotechnology (AREA)

Abstract

L'invention a pour objet un corps moulé poreux sous la forme d'une couche de plâtre isolant ou d'une plaque isolante, comprenant un corps creux à alvéoles fermées ou à alvéoles ouvertes, ou à alvéoles fermées et ouvertes, constitué d'un matériau inorganique, ainsi qu'un agent liant. L'invention se caractérise en ce que des particules composites sont contenues comme agent liant, ces particules composites renfermant au moins un polymère organique et au moins une matière solide inorganique, la proportion en poids de matière solide inorganique étant comprise entre 15 et 50% en poids, sur la base du poids total de polymère organique et de matière solide inorganique dans les particules composites.
EP16754275.2A 2016-08-19 2016-08-19 Corps moulé poreux sous la forme d'une couche de plâtre isolant ou d'une plaque isolante Withdrawn EP3500537A1 (fr)

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PCT/EP2016/069716 WO2018033219A1 (fr) 2016-08-19 2016-08-19 Corps moulé poreux sous la forme d'une couche de plâtre isolant ou d'une plaque isolante

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KR (1) KR20190030738A (fr)
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CN111732380B (zh) * 2020-06-23 2024-04-26 闫昱伦 多层高强度膨化珍珠岩板及其制备方法
DE102020119013A1 (de) * 2020-07-17 2022-01-20 HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung Verfahren zur Herstellung eines Artikels zur Verwendung in der Gießereiindustrie, entsprechende Form, Kern, Speiserelement oder Formstoffmischung sowie Vorrichtungen und Verwendungen
AT524128B1 (de) * 2021-03-08 2022-03-15 Andreas Wolfthaler Dipl Ing Leichtbetonmischung

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RU2721612C1 (ru) 2020-05-21
WO2018033219A1 (fr) 2018-02-22
US11059755B2 (en) 2021-07-13
US20190218149A1 (en) 2019-07-18
WO2018033219A8 (fr) 2019-01-31
KR20190030738A (ko) 2019-03-22
CN109562997A (zh) 2019-04-02

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