WO1998007780A1 - Produit composite transparent a teneur en aerogel et matiere plastique, procede de production et application - Google Patents

Produit composite transparent a teneur en aerogel et matiere plastique, procede de production et application Download PDF

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Publication number
WO1998007780A1
WO1998007780A1 PCT/EP1997/004361 EP9704361W WO9807780A1 WO 1998007780 A1 WO1998007780 A1 WO 1998007780A1 EP 9704361 W EP9704361 W EP 9704361W WO 9807780 A1 WO9807780 A1 WO 9807780A1
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WO
WIPO (PCT)
Prior art keywords
composite material
airgel
plastic
material according
transparent
Prior art date
Application number
PCT/EP1997/004361
Other languages
German (de)
English (en)
Inventor
Fritz Schwertfeger
Marc Schmidt
Original Assignee
Cabot Corporation
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 Cabot Corporation filed Critical Cabot Corporation
Priority to EP97940068A priority Critical patent/EP0920473A1/fr
Publication of WO1998007780A1 publication Critical patent/WO1998007780A1/fr

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Classifications

    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10376—Laminated safety glass or glazing containing metal wires
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/16—Solid spheres
    • C08K7/18—Solid spheres inorganic
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/54—Slab-like translucent elements
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/102—Oxide or hydroxide
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating

Definitions

  • Airgel- and plastic-containing, transparent composite material process for its production and its use.
  • the invention relates to novel composite materials of any shape with high thermal insulation capacity, which contain 5 to 97 vol .-% transparent or translucent airgel particles and at least one transparent or translucent plastic.
  • Polyurethanes are made using blowing agents such as CFCs or CO 2 .
  • the blowing agent enclosed in the cells of the foam is responsible for the high thermal insulation capacity.
  • blowing agents pollute the environment because they slowly escape into the atmosphere.
  • foamed insulation materials are opaque.
  • Aerogels especially those with porosities above 60% and densities below 0.6 g / cm 3 , are transparent, translucent or opaque depending on the manufacturing process and have an extremely low thermal conductivity. You will therefore find application as a heat insulation material such. B. is described in EP-A-0 171 722.
  • Aerogels in the broader sense are produced by drying a suitable gel.
  • airgel in this sense includes aerogels in the narrower sense, xerogels and cryogels.
  • a dried gel is referred to as an airgel in the narrower sense if the liquid of the gel is largely removed at temperatures above the critical temperature and starting from pressures above the critical pressure. If, on the other hand, the liquid of the gel is removed subcritically, for example with the formation of a liquid-vapor boundary phase, the resulting gel is often referred to as a xerogel.
  • aerogels in the present application is aerogels in the broader sense, ie in the sense of "gel with air as a dispersing agent"
  • aerogels can in principle also be divided into inorganic and organic aerogels, inorganic aerogels having been known since 1931 (SS Kistler, Nature 1931, 127, 741), and organic aerogels from a wide variety of starting materials. e.g. from melamine formaldehyde, have only been known for a few years (RW Pekala, J Mater
  • the aerogels obtained by supercritical drying are generally hydrophilic or only hydrophobic for a short time, whereas subcritically dried aerogels are permanently hydrophobic due to their manufacturing process (soiling before drying)
  • Transparent airgel and xerogel composites are disclosed in DE-A-44 30 642 and DE-A-44 30669 These composites are in the form of a mat containing an airgel or xerogel and fibers distributed therein, the airgel or xerogel fragments being held together by the fibers.
  • the airgel monoliths should partially be firmly connected to the glass plates. In this way, almost crystal-clear, transparent panes can be achieved, but because of the low mechanical stability of the aerogels, the effort for producing correspondingly large monoliths is on the one hand too high, and on the other hand the handling during the manufacture of the panes is too complicated to accommodate such glass panes to be able to use on a larger scale.
  • Granule balls are only transferred over very small contact surfaces. This results in relatively high compressive and / or shear stresses, which can lead to the destruction of airgel particles
  • Vacuum panel systems filled with airgel are also known, as disclosed, for example, in EP-A-0468 124, EP-A-0 114 687 and DE-A-33 47 619
  • vacuum panel systems are that they can no longer be changed in shape or size at the point of use
  • a plastic-containing, transparent composite material which contains 5 to 97% by volume of transparent or translucent airgel particles and at least one transparent or translucent plastic
  • the plastic forms a matrix that connects or encloses the airgel particles and runs as a continuous phase through the entire composite material.
  • a content of airgel particles that is significantly above 97% by volume would lead to a content of plastic of less than 3% by volume. In this case, its proportion would be too low to ensure sufficient connection of the airgel particles to one another and mechanical pressure and bending strength.
  • the proportion of airgel particles is preferably in the range from 10 to 97% by volume and particularly preferably in the range from 40 to 95% by volume.
  • a particularly high proportion of airgel particles in the composite material can be achieved by using a bimodal distribution of the grain sizes.
  • Another possibility of achieving a particularly high proportion of airgel particles in the composite material is the use of airgel particles which have a logarithmic distribution of the grain size.
  • the airgel particles are small in relation to the total thickness of the molded part.
  • the airgel particles should be large enough so that the transparency of the composite material is as high as possible.
  • the number of scattering centers through interfaces of the airgel particles can thereby be kept as low as possible.
  • the size of the airgel particles is therefore preferably in the range from 250 ⁇ m to 10 mm.
  • aerogels for the compositions according to the invention are those based on metal oxides which are suitable for sol-gel technology (CJ Bnnker, GW Scherer, Sol-Gel-Science, 1990, chapters 2 and 3), such as Si or Al compounds, or those based on organic substances which are suitable for the sol-gel technique, such as melamine formaldehyde condensates (US Pat. No. 5,086,085) or resorformaldehyde condensates (US Pat. No. 4,873,218).
  • the compositions can also based on mixtures of the above materials. Aerogels containing Si compounds and in particular SiO 2 aerogels are preferably used
  • the airgel can contain IR opacifiers, such as titanium dioxide or zirconium dioxide, as well as mixtures thereof. Care must be taken that these IR opacifiers do not adversely affect the transparency in the visible area of the airgel particles
  • the airgel particles have permanently hydrophobic surface groups.
  • Suitable groups for permanent hydrophobization are, for example, silyl groups of the general formula
  • n 1, 2 or 3, preferably t ⁇ substituted silyl groups
  • the radicals R in general, independently of one another, the same or different, each being a hydrogen atom or a non-reactive, organic linear, branched, cyclic, aromatic or heteroaromatic
  • These groups can be introduced as described in WO 94/25149, or by gas phase reaction between the airgel and, for example, an activated trialkylsilane derivative, such as, for example, a chlorotrialkylsilane or a hexaalkyldisilazane (compare R.
  • the thermal conductivity of the aerogels decreases with increasing porosity and decreasing density. Aerogels with porosities above 60% and densities below 0.6 g / cm 3 are therefore preferred. Aerogels with densities below 0.2 g / cm 3 are particularly preferred.
  • plastics are suitable for producing the composite materials according to the invention if they are transparent or translucent after production in the visible light wavelength range.
  • the plastic is amorphous, semi-crystalline and / or crystalline.
  • the plastic is used either in liquid form, ie as a liquid, melt, solution, dispersion or suspension, or else as a solid powder.
  • Suitable transparent or translucent plastics are, for example, polymethyl methacrylates (PMMA, for example Degalan®), cycloolefin copolymers (COC, for example Topas®), polyvinyl butyrals (for example Mowital®), polycarbonates and polyethylene terephthalates (PET, for example Hostaglas®), with polyvinyl butyrals, polycarbonates and polymethyl methacrylate are preferred.
  • the plastic is generally used in an amount of 3 to 95% by volume of the composite material, preferably in an amount of 3 to 90% by volume and particularly preferably in an amount of 5 to 60% by volume.
  • the choice of plastic is made in each case according to the desired mechanical and thermal properties of the composite material. Mixtures of different plastics can also be used
  • the gusset between the airgel particles should preferably be filled as completely as possible with transparent plastic
  • the composite material can contain IR opacifiers, such as titanium dioxide or zirconium dioxide, as well as mixtures thereof, as long as the transparency is not significantly impaired, which is particularly advantageous for applications at higher temperatures and / or in evacuated systems.
  • the composite material can also contain fillers, for example for coloring or for achieving special decorative effects.
  • the composite material can also up to 85 vol .-% of transparent fillers such.
  • the proportion of the fillers, based on the composite material, is preferably below 70% and particularly preferably in the range from 0 to 50% by volume.
  • the composite material is hydrophilic due to the plastic used and / or due to hydrophilic airgel particles
  • a subsequent treatment can optionally be carried out which gives the composite material hydrophobic properties.
  • All substances known to the person skilled in the art for this purpose are suitable for this purpose, which give the composite material a hydrophobic surface, such as, for. B. paints, films, silylating agents, silicone resins, inorganic and / or organic binders.
  • Coupled agents can also be used for bonding. They bring about better contact of the plastics with the surface of the airgel particles and can also form a firm bond with both the airgel particles and the plastic.
  • the molded articles produced according to the invention from airgel granules preferably have a density of less than 0.6 g / cm 3 and preferably a thermal conductivity of less than 100 mW / mK.
  • the thermal conductivity is particularly preferably below 50 mW / mK.
  • the fire class of the composite material obtained after drying is determined by the fire class of the airgel and the plastic.
  • the composite materials can also be laminated with suitable materials, such as. B. window panes or silicone resin adhesives.
  • suitable materials such as. B. window panes or silicone resin adhesives.
  • fire protection agents known to the person skilled in the art is possible.
  • all coatings known to the person skilled in the art are also possible which, for. B. dirt-repellent, IR semi-transparent and / or hydrophobic.
  • Another object of the present invention was to develop a manufacturing method for the composite materials described above.
  • the airgel particles are connected to one another by means of at least one plastic.
  • the individual particles can be connected to one another in a quasi-punctiform manner.
  • Such a surface coating can be achieved, for example, by spraying the airgel particles with the plastic.
  • the coated particles are then filled into a mold, for example, and cured in the mold.
  • Another object of the invention is therefore a method for producing a composite material containing 5 to 97 vol .-% transparent or translucent airgel particles and at least one transparent or translucent plastic, which is characterized in that airgel and plastic are mixed into the brings the desired shape and hardens.
  • the gusset volume between the individual particles is also completely or partially filled by the plastic. If a particularly transparent version is required, make sure that there are as few gas bubbles as possible in the gusset volume. On the other hand, the degree of transparency can be determined by specifically including gas bubbles in the
  • Control gusset volume Such a composition can be produced, for example, by mixing the airgel particles with the plastic granulate.
  • the mixing can be carried out in any conceivable way. So on the one hand it is possible to simultaneously insert the at least two components into the
  • mixing device but on the other hand, one of the components can also be submitted and the other (s) can then be added.
  • the mixing device necessary for the mixing is in no way limited. Any mixing device known to those skilled in the art for this purpose can be used.
  • the mixing process is carried out until there is an approximately uniform distribution of the airgel particles in the composition.
  • the mixing process can be regulated both over the duration and, for example, over the speed of the mixing process.
  • the mixture is pressed. It is possible for the person skilled in the art to select the suitable press and the suitable pressing tool for the respective application.
  • the use of vacuum presses is advantageous due to the high air content of the airgel-containing molding compounds.
  • the airgel-containing molding compounds are pressed into sheets.
  • the airgel-containing mixture to be compressed can be separated off against the pressing tool using release paper or release film.
  • the mechanical strength of the airgel-containing plates can be improved by laminating screen fabrics, foils or glass panes onto the plate surface. The screen fabrics, foils or glass panes can be applied to the airgel-containing plates both subsequently and during the production of the composite material.
  • the latter is preferred and can preferably be carried out in one working step by inserting the screen cloth, foils or glass panes into the mold and placing them on the airgel-containing molding compound to be compressed and then pressing them under pressure and temperature to form an airgel-containing composite panel.
  • the pressing generally takes place at pressures of 1 to 1000 bar and temperatures of 0 to 300 ° C. in any shape.
  • heat can additionally be brought into the plates with the aid of suitable radiation sources. If, as in the case of polyvinyl butyrals, the plastic used couples with microwaves, this radiation source is preferred.
  • the composite materials according to the invention are suitable, for example, because of their low thermal conductivity
  • hydrophobic aerogels were produced analogously to the process disclosed in DE-A-4342 548.
  • the thermal conductivities of the airgel granules were measured using a heating wire method (see, for example, 0.Nielsen, G. Rüschenpöhler, J. subject, J. Fricke, High Temperatures - High Pressures, Vol. 21, 267-274 (1989)).
  • the transparency of the moldings was determined using an apparatus consisting of a Voltage measuring device (Keithley multimeter), a pyranometer (Lambrecht company, type CM3, sensitivity +/- 0.5%, 16.30 * 10 "6 V / Wm 2 ), an inside matt white painted aluminum cube and a halogen lamp (500 W)
  • the shaped bodies are placed directly in front of the round opening (0 80 mm) of the aluminum cube painted matt white on the inside.
  • the halogen lamp set up in 400 mm serves as the light source.
  • the pyranometer placed in the aluminum cube behind a panel converts the detected light into a voltage
  • the transmission in percent of l 0 was determined by measuring the voltage without (l 0 ) and with the respective insulation board (l D ).
  • Shaped body made of 50 vol .-% airgel and 50 vol .-% polyvinyl butyral
  • the hydrophobic airgel granulate has a grain size greater than 650 ⁇ m, a BET surface area of 640 m 2 / g and a thermal conductivity of 11 mW / mK.
  • ®Mowital (Polymer F) Hoechst AG, Frankfurt, Germany
  • a grain size of around 50 ⁇ m is used as the polyvinyl butyral powder.
  • the bottom of the mold with a base area of 30 cm x 30 cm is lined with release paper.
  • the airgel-containing molding compound is then evenly distributed and the whole thing is covered with a release paper. It is pressed at 220 ° C for 30 minutes to a thickness of 18 mm.
  • the molded body obtained has a density of 481 kg / m 3 and a thermal conductivity of 57 mW / mK.
  • the transmission is 28%.
  • Shaped body made of 50 vol .-% airgel and 50 vol .-% polyvinyl butyral 50% by volume of hydrophobic airgel granules (solid density 130 kg / m 3 ) and 50% by volume of a polyvinyl butyral powder (solid density 1100 kg / m 3 ) are mixed intimately.
  • the percentage volume relates to the target volume of the shaped body.
  • the hydrophobic airgel granulate has a grain size of less than 650 ⁇ m, a BET surface area of 640 m 2 / g and a thermal conductivity of 11 mW / mK.
  • ®Mowital (Polymer F) Hoechst AG, Frankfurt, Germany
  • a grain size of around 50 ⁇ m is used as the polyvinyl butyral powder.
  • the bottom of the mold with a base area of 30 cm x 30 cm is lined with release paper.
  • the airgel-containing molding compound is then evenly distributed and the whole thing is covered with a release paper. It is pressed at 220 ° C for 30 minutes to a thickness of 18 mm.
  • the molded body obtained has a density of 510 kg / m 3 and a thermal conductivity of 59 mW / mK.
  • the transmission is 20%.
  • Shaped body made of 65 vol .-% airgel and 35 vol .-% polyvinyl butyral
  • the hydrophobic airgel granulate has a grain size greater than 650 ⁇ m, a BET surface area of 640 m 2 / g and a thermal conductivity of 11 mW / mK.
  • ®Mowital (Polymer F) Hoechst AG, Frankfurt, Germany
  • a grain size of around 50 ⁇ m is used as the polyvinyl butyral powder.
  • the bottom of the mold with a base area of 30 cm x 30 cm is lined with release paper.
  • the airgel-containing molding compound is then evenly distributed and the whole thing is covered with a release paper. It is pressed at 220 ° C for 30 minutes to a thickness of 18 mm.
  • the molded body obtained has a density of 539 kg / m 3 and a thermal conductivity of 32 mW / mK. The transmission is 31%.
  • Shaped body made of 50 vol.% Airgel and 50 vol.% Polymethyl methacrylate (PMMA)
  • hydrophobic airgel granulate 50% by volume of hydrophobic airgel granules (solid density 130 kg / m 3 ) and 50% by volume of a polymethyl methacrylate (solid density 1200 kg / m 3 ) are mixed intimately.
  • the percentage volume relates to the target volume of the shaped body.
  • the hydrophobic airgel granulate has a grain size greater than 650 ⁇ m, a BET surface area of 640 m 2 / g and a thermal conductivity of 11 mW / mK.
  • ®Degalan (PMMA) DEGUSSA, Frankfurt, Germany) with a grain size of around 50 ⁇ m is used as the polymethyl methacrylate.
  • the bottom of the mold with a base area of 30 cm x 30 cm is lined with release paper.
  • the airgel-containing molding compound is then evenly distributed and the whole thing is covered with a release paper. It is pressed at 220 ° C for 30 minutes to a thickness of 18 mm.
  • the molded body obtained has a density of 615 kg / m 3 and a thermal conductivity of 59 mW / mK.
  • the transmission is 25%.
  • Shaped body made of 50 vol.% Airgel and 50 vol.% Polymethyl methacrylate (PMMA)
  • the hydrophobic airgel granulate has a grain size of less than 500 ⁇ m, a BET surface area of 640 m 2 / g and a thermal conductivity of 11 mW / mK.
  • PMMA polymethyl methacrylate ®Degalan
  • the bottom of the mold with a base area of 30 cm x 30 cm is lined with release paper.
  • the airgel-containing molding compound is then distributed evenly and the whole thing is covered with a release paper. It is pressed at 220 ° C for 30 minutes to a thickness of 18 mm.
  • the molded body obtained has a density of 628 kg / m 3 and a thermal conductivity of 64 mW / mK.
  • the transmission is 17%.
  • Shaped body made of 50 vol .-% airgel and 50 vol .-% cycloolefin copolymer (COC)
  • hydrophobic airgel granulate 50% by volume of hydrophobic airgel granules (solid density 130 kg / m 3 ) and 50% by volume of a cycloolefin copolymer (solid density 1200 kg / m 3 ) are mixed intimately.
  • the percentage volume relates to the target volume of the shaped body.
  • the hydrophobic airgel granulate has a grain size greater than 650 ⁇ m, a BET surface area of 640 m 2 / g and a thermal conductivity of 11 mW / mK.
  • ® Topas (COC) Hoechst AG, Frankfurt, Germany
  • a grain size of around 250 ⁇ m is used as the cycloolefin copolymer.
  • the bottom of the mold with a base area of 30 cm x 30 cm is lined with release paper.
  • the airgel-containing molding compound is then distributed evenly and the whole thing is covered with a release paper. It is pressed at 220 ° C for 30 minutes to a thickness of 18 mm.
  • the molded body obtained has a density of 585 kg / m 3 and a thermal conductivity of 62 mW / mK.
  • the transmission is 25.6%.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
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Abstract

La présente invention porte sur un produit composite contenant, à raison de 5 à 97 % de son volume, des particules d'aérogel transparentes et translucides et au moins une matière plastique transparente ou translucide, sur le procédé de fabrication et sur l'application de ce produit.
PCT/EP1997/004361 1996-08-23 1997-08-11 Produit composite transparent a teneur en aerogel et matiere plastique, procede de production et application WO1998007780A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97940068A EP0920473A1 (fr) 1996-08-23 1997-08-11 Produit composite transparent a teneur en aerogel et matiere plastique, procede de production et application

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19634109.4 1996-08-23
DE19634109A DE19634109C2 (de) 1996-08-23 1996-08-23 Aerogel- und kunststoffhaltiges, transparentes Verbundmaterial, Verfahren zu seiner Herstellung sowie seine Verwendung

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WO1998007780A1 true WO1998007780A1 (fr) 1998-02-26

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PCT/EP1997/004361 WO1998007780A1 (fr) 1996-08-23 1997-08-11 Produit composite transparent a teneur en aerogel et matiere plastique, procede de production et application

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EP (1) EP0920473A1 (fr)
DE (1) DE19634109C2 (fr)
WO (1) WO1998007780A1 (fr)

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US7621299B2 (en) 2003-10-03 2009-11-24 Cabot Corporation Method and apparatus for filling a vessel with particulate matter
US7635411B2 (en) 2004-12-15 2009-12-22 Cabot Corporation Aerogel containing blanket
US7641954B2 (en) 2003-10-03 2010-01-05 Cabot Corporation Insulated panel and glazing system comprising the same
US7781492B2 (en) 2006-06-08 2010-08-24 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Foam/aerogel composite materials for thermal and acoustic insulation and cryogen storage
US7790787B2 (en) 2006-05-03 2010-09-07 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Aerogel/polymer composite materials
EP1682611B1 (fr) * 2003-11-10 2016-02-17 W.L. Gore & Associates, Inc. Materiau isolant composite aerogel/ptfe

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Publication number Priority date Publication date Assignee Title
WO2006048690A2 (fr) * 2004-11-08 2006-05-11 General Applications For Special Materials Limited Materiau isolant
DE102006061666A1 (de) 2006-12-27 2008-07-03 Siebrecht, Ralf, Dr. Poröse Festkörper mit Beschichtung
DE102010062295A1 (de) * 2010-12-01 2012-06-06 Endress + Hauser Gmbh + Co. Kg Kompositwerkstoff, Formkörper, elektronisches Gerät mit Formkörper, und Verfahren zur Herstellung für einen Formkörper
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US7621299B2 (en) 2003-10-03 2009-11-24 Cabot Corporation Method and apparatus for filling a vessel with particulate matter
US7641954B2 (en) 2003-10-03 2010-01-05 Cabot Corporation Insulated panel and glazing system comprising the same
EP1682611B1 (fr) * 2003-11-10 2016-02-17 W.L. Gore & Associates, Inc. Materiau isolant composite aerogel/ptfe
US7635411B2 (en) 2004-12-15 2009-12-22 Cabot Corporation Aerogel containing blanket
US8021583B2 (en) 2004-12-15 2011-09-20 Cabot Corporation Aerogel containing blanket
US7790787B2 (en) 2006-05-03 2010-09-07 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Aerogel/polymer composite materials
US9777126B2 (en) 2006-05-03 2017-10-03 The United States Of America As Represented By The Administrator Of Nasa Aerogel / polymer composite materials
US7781492B2 (en) 2006-06-08 2010-08-24 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Foam/aerogel composite materials for thermal and acoustic insulation and cryogen storage
US7977411B2 (en) 2006-06-08 2011-07-12 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Foam/aerogel composite materials for thermal and acoustic insulation and cryogen storage

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DE19634109A1 (de) 1998-02-26
DE19634109C2 (de) 1998-08-27

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