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WO2010080060A1 - Aérogel de silice en tant que panneau transparent dans une fenêtre permettant des économies d'énergie - Google Patents

Aérogel de silice en tant que panneau transparent dans une fenêtre permettant des économies d'énergie Download PDF

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Publication number
WO2010080060A1
WO2010080060A1 PCT/SE2010/050004 SE2010050004W WO2010080060A1 WO 2010080060 A1 WO2010080060 A1 WO 2010080060A1 SE 2010050004 W SE2010050004 W SE 2010050004W WO 2010080060 A1 WO2010080060 A1 WO 2010080060A1
Authority
WO
WIPO (PCT)
Prior art keywords
silica aerogel
present
panel
anyone
body according
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.)
Ceased
Application number
PCT/SE2010/050004
Other languages
English (en)
Inventor
Leif Gullberg
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.)
AIRGLASS AB
Original Assignee
AIRGLASS AB
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 AIRGLASS AB filed Critical AIRGLASS AB
Publication of WO2010080060A1 publication Critical patent/WO2010080060A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/60—Thermal insulation
    • F24S80/65—Thermal insulation characterised by the material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/157—After-treatment of gels
    • C01B33/158—Purification; Drying; Dehydrating
    • C01B33/1585—Dehydration into aerogels
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/14—Solid materials, e.g. powdery or granular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/50—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/50—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings
    • F24S80/56—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings characterised by means for preventing heat loss
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/10—Solid density
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/24—Structural elements or technologies for improving thermal insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/24—Structural elements or technologies for improving thermal insulation
    • Y02A30/249—Glazing, e.g. vacuum glazing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/10—Insulation, e.g. vacuum or aerogel insulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
    • Y02B80/22—Glazing, e.g. vaccum glazing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Definitions

  • the present invention relates to a body of a silica aerogel material and to a process for the production of shaped silica aerogel materials, such as e.g. panels.
  • silica aerogel in powder form. It is also known to produce silica aerogel in the form of blocks. For example, it is described in SE 422 045, a way to produce silica aerogel in the form of a substantially crack-proof, preferably transparent block.
  • the method is carried out by hydrolysis of tetraalkoxysilane, preferably tetramethoxysilane, in an alcohol, preferably methanol, in the presence of a catalyst, preferably ammonia, to the formation of an alcogel, which is aged about 10 days and washed with alcohol to remove water.
  • the alcogel is subsequently treated in an autoclave by temperature increase to over the critical point of the alcohol, isotherm pressure drop by the discharge of alcohol vapour, and temperature drop.
  • SE 422 045 There are several drawbacks to the way or method described in SE 422 045.
  • the method is energy-intensive as it is carried out at comparatively high temperatures, such as e.g. at the after-heat treatment carried out bet- ween 500 0 C and 75O 0 C.
  • the process to perform the method is not quite easy to keep secure because the removal of the solvents from the alcogel and finally out from the autoclave is carried out at relatively high pressures and temperatures, such as for the preferred solvent methanol at about 90 bar and at a final temperature of 275 0 C.
  • the material produ- ced according to SE 422 045 is further not optimal for various uses. An example of this is that the coefficient of thermal conductivity specified in SE 422 045 is 0.021 W / (m * K) for the obtained aerogel material after evacuation.
  • WO2007011988 A2 describes aerogel composites comprising organic- inorganic hybrid aerogel particles and binders.
  • Hybrid aerogel materials are materials that include aerogels and other materials.
  • the material described in WO2007011988 A2 is not meant to serve as insulating materials in applications where light must be able to penetrate, which is evident as the material include for example polymers, monomers or oligomers. This implies that the material is not high-transparent and also not particularly heat-resistant or fire- resistant.
  • the material according to WO2007011988 A2 is not super-insulating and cannot be made super-insulating. All of these intrinsic features imply that the material according to WO2007011988 A2 is not appropriate as super-insulating material in applications where light shall penetrate.
  • WO2007146945 A2 describes flexible aerogel foam composites which comprise at least one open cell foam component and at least one aerogel matrix.
  • the material according to WO2007146945 A2 includes at least one component which is not of aerogel type. This allows the material to be made flexible. To make an aerogel material flexible is virtually impossible without the involvement of other material types, which also is apparent from WO2007146945 A2. This also brings about completely different effects. Also in this case, as in the case of WO2007011988 A2, the material can never be high-transparent, heat-resistant or be made super-insulating.
  • One aim of the present invention is to provide a process for the production of a shaped silica aerogel material body which remedies the above men- tioned problems.
  • Another aim of the present invention is to provide a body, e.g. a panel, of an improved silica aerogel material, such as based on e.g. coefficient of thermal conductivity, with a predetermined desired and decided shape and size. Summary of the invention The latter stated purpose above is achieved by a body of a silica aerogel material which is porous and comprises nanoparticles, wherein the body
  • - has a density in the range of 60-300 kg/m 3 ;
  • - has a thermal conductivity ⁇ of less than 0.020 W / (m * K) when measured at a density of 150 kg/m 3 and temperature of about 2O 0 C, and
  • - is transparent and has a total transparency which is at least 90%; and - has a refractive index in the range of 1.017-1.060, when measured at a thickness of 14 mm and as non-encased body.
  • the body or the silica aerogel material which it is composed of according to the present invention has a very low thermal conductivity.
  • the thermal conductivity (the coefficient of thermal conductivity) is below 0.020 W / (m * K), which shall be compared with 0.021 W / (m * K) for the aerogel material described in SE 422 045, the latter, however, measured at a higher density of 240 kg/m 3 but yet in evacuated state (air-free state for the pores), which in itself implies a much lower thermal conductivity than the non-evacuated state.
  • the thermal conductivity is 0.022 W / (m * K) at about room temperature.
  • a body such as e.g. a panel
  • the silica aerogel material according to the present invention may be given different properties which are appropriate for the specific application.
  • An intrinsic property of a silica aerogel material according to the present inven- tion is the possibility of a high transparency of the material. This implies that the material according to one specific embodiment may provide a high clarity, which means that it is appropriate to use in applications where both light is to penetrate and where one should to be able to see through the material almost as good as for ordinary window glass.
  • a panel in accordance with the present invention may be used in energy-window applications, which also are transparent, but also save energy because of the fact that the coefficient of thermal conductivity is so low for the material.
  • - is transparent and has a total transparency which is at least 90%
  • - has a refractive index in the range of 1.017-1.060, when measured at a thickness of 14 mm and as non-encased body.
  • Transparency in the field of optics is synonymous with transparent and translucent, i.e. clear.
  • the transparency of a material can be divided into the transparency that can be derived from the light or radiation that directly penetrates straight through the material, so-called normal illumination, and light or radiation which is distributed in the material, but subsequently penetrates, so- called scattered light or diffused light.
  • the total transparency can be defined as transparency which is derived from both direct light penetration and the penetration of scattered or diffused light.
  • the bodies may, however, be produced so that they have other characteristics than just high transparency.
  • One such example is a body in accor- dance with the present invention which is translucent by means of glass fibers being admixed in the silica aerogel material or by means of the surface of the body being heat treated or roughened. Such treatment may for example be made by surface treatment by spraying with water or by burning on the surface.
  • a translucent material implies a material that passes light through but is not transparent.
  • translucent bodies according to the present invention could be very useful.
  • One such example is for panels in energy-windows in e.g. a bathroom where you want to let light through, but do not wish to have any transparency. Through the mixing of e.g.
  • the glass fibers which can be admixed may have different forms, such as for example nets, sticks or chips.
  • To heat treat the surface to make the material translucent may be accomplished by overheating the surface, causing the pores to "crash" and thus the surface to rise.
  • wavelength shifters and light filters This may e.g. be performed in order to alter the colour of the material.
  • a standard panel according to the present invention There is naturally a bluish in a standard panel according to the present invention.
  • a wavelength shifter With the help of e.g. a wavelength shifter, the blue light as the standard panel material normally emits may be shifted to another colour, e.g. green light.
  • a wavelength shifter may be ad- mixed to reduce the proportion of diffused light, by reduced scattering of light, and thus give the effect of an increased proportion of direct penetrated light.
  • a wavelength shifter is therefore admixed in the silica aerogel material.
  • certain types of components may be admixed in the material according to the present invention.
  • Such examples are carbon fibers, glass wool, mineral wool and/or rock wool. This, however, implies that the material to some extent becomes opaque, which is not advantageous for applications where light must penetrate.
  • an opaque material is meant in this respect, a material that is untransparent, which means that light does not go through the material and obviously that one neither is able to see through the material.
  • the mechanical stability of the material is increased, but transparency is, how- ever, completely lost.
  • Opaque bodies, such as panels, can preferably be used as insulating materials when a low thermal conductivity and mechanical stability are important while transparency is not interesting.
  • the body is evacuated and is super- insulating and has a thermal conductivity ⁇ which is 0.007 W / (m * K) or less, when measured at a density of 150 kg/m 3 and temperature of about 2O 0 C. This is a value of the coefficient of thermal conductivity which is significantly lower than for both vacuum and the material described in SE 422 045.
  • the density of the silica aerogel material according to the present invention may be between 60 and 300 kg/m 3 , such as between 80 and 250 kg/m 3 , but in a number of applications the desired density is between 100 and 200 kg/m 3 , such as in the range of 125-175 kg/m 3 , e.g. at about 150 kg/m 3 .
  • WO2007146945 A2 The material according to the present invention is however a solid and therefore withstand very high outspread pressures.
  • the silica aerogel material is further water-resistant in view of the fact that a silane compound is bound into the silica aerogel material. This may be an advantage because the material thus becomes more easily handled.
  • An example of silane compounds which can be bound is hexamethyldisilazane (HMDS).
  • HMDS hexamethyldisilazane
  • the body according to the present invention may also be encased in a surrounding material. This is also something that could lead to the fact that panels according to the present invention will be easier to handle and transport.
  • an en- casing material therefore surrounds the body, such as when the material is evacuated as according to above.
  • the encasing material is chosen from the group consisting of transparent materials, plastic foils, glass panels and plastic sheets. What type of encasing material used of course depends on the desired application. For example, when an encased body with high transparency is the desired one, the encasing material must of course also be transparent, e.g. a transparent plastic foil. Another possibility is to use a glass material to encase the body. In the case when a panel of the silica aerogel material according to the present invention is encased between two insulating glasses, these insulating glasses may e.g. be coloured. This to reduce the impression of the blue mist sight that otherwise might occur from the silica aerogel material.
  • body according to the present invention is meant a geometric body.
  • the body is therefore a panel, e.g. a panel with a thickness of up to 5 cm.
  • the body is a halfpipe-shaped body.
  • the panel is further meant geometric shapes where length and width are larger than the thickness. According to the present invention, completely different thicknesses, lengths and widths are possible. According to one specific embodiment, the panel has a size of up to 1.5 m * 2 m (width * length), such as e.g. 600 mm * 1200 mm (width * length).
  • the present invention also describes a process for the production of a silica aerogel body which is porous and comprises nanoparticles. According to one specific embodiment of the present invention, the process comprises the steps of:
  • recipe start components at least include a silane compound, an alcohol chosen from the group consisting of methanol, ethanol and propanol, and a catalyst which is either ammonia or titanium lactate;
  • a solgel is, by definition, a suspension consisting of a solvent and a sol which then may polymerize and aggregate to form a gel. Polymerization above implies binding together into longer chains by chemical reaction, and not that any polymer is admixed into the material.
  • the solvent in this case methanol, ethanol or propanol, may then be evaporated away and the result is a porous material.
  • An example of a material for a mould is e.g. glass, but there are other materials that are equally possible.
  • the step of duration of the wetgel in the mould may for instance be performed by the mould being immersed in a water bath and kept there for about 1-3 days. It would, according to the present invention, also be possible to speed up the polymerization during the duration step. This could for example be possible by treating the wetgel with radiation, such as ultraviolet light, or ultra sound or by heat treatment.
  • An example of the form removal step is that said mould is immersed in a form removal bath containing solvent, then the top side of the mould is removed so that the wetgel releases from the mould and floats up into the solvent, when the wetgel then becomes heavier by interference from the solvent the wetgel sinks down on a transport device placed in the form removal bath between the wetgel and mould after the wetgel has floated up into the solvent.
  • the solvent in this case is preferably the same solvent used in the remaining part of the process.
  • the transport device described above may be of different type. There are various examples that are possible. A grill has been tested and this may act under this procedure adequate for certain application types. On the other hand, there may occur small marks in the gel where the grid holds this. For other applications, such as during the manufacture of transparent panels for window applications, that is not fully acceptable and then other types of transport devices should be used, such as a supporting plane, e.g. a membrane, which is gas permeable. There are also other techniques that could be possible to use according to the present invention. This is e.g. transportation of the gel on an air bed which keeps the gel floating. Also in the autoclave, technology may be used to ensure that the gel does not need to rest against a transport device, such as a grill or a supporting plane. This could for example be to direct a gas inflow of suitable gas, e.g. an inert gas, with sufficient force to keep the gel floating. Furthermore, devices having elements which in relation to each other varying hold up the gel are also possible.
  • suitable gas e.g. an
  • the wetgel is not changed in terms of structure and shape, and therefore the transport device or transport technology should be chosen carefully.
  • the remaining part of the process may have a significant importance.
  • the evaporation of alcohol carried out in the autoclave, which autoclave is filled with the alcohol in question, can either be done by using supercritical carbon dioxide or liquid carbon dioxide.
  • An example of how this may be accomplished is with supercritical carbon dioxide at for example from 90 bar to 150 bar and at from 45 0 C to 8O 0 C or with liquid carbon dioxide at for example 50-70 bar and temperature of 10-20 0 C.
  • This step is much easier and much safer than the alcohol evaporation step as described in SE 422 045.
  • the process for the preparation of a silica aerogel body, which is porous and comprises nanoparticles comprises the following steps:
  • recipe start components at least include a silane compound, an alcohol chosen from the group consisting of methanol, ethanol and propanol, and a catalyst which is either ammonia or titanium lactate;
  • the subsequent heating process is performed at a temperature above 200 0 C.
  • the temperature chosen depends largely on the desired final material for the silica aerogel body.
  • the heating process is performed at 250°C-350°C, which is adequate for those solvents intended according to the present invention. This implies that the heating process according to the present invention is significantly less energy consuming than that described in SE 422 045, where a temperature range of between 500 0 C and 75O 0 C is current, i.e. to achieve a similar effect.
  • the produced material according to the present invention is heat-resistant and sustains at least 35O 0 C, e.g. at least 400 0 C.
  • the material according to the present invention has according to one specific embodiment e.g. a heat-resistance of 600 0 C. Also this feature is something that distinguishes the material according to the present invention substantially from the materials according to WO2007011988 A2 and WO2007146945 A2.
  • the heating process is therefore performed at at least 500 0 C in order to achieve shrinkage of the essentially alcohol-free silica aerogel material. Shrinkage increases with increasing temperature, and if a more powerful shrinkage of the material is desired, the heating process may thus be performed at e.g. at least 700 0 C.
  • Sealing the pores on the surface can also be conducted on the material according to the present invention. This could with another word be called surface glazing or shrinkage of only the surface. This can be performed by different types of technologies, such as by "sputtering”, which is also known as sputtering or cathode flocking in Swedish, of the surface or by overheating of the surface.
  • silica aerogel bodies such as for example panels or halfpipe-shaped bodies.
  • the formed silica aerogel body therefore is panel or halfpipe-shaped.
  • the formed silica aerogel body is encased finally in an encasing material. This can e.g. be done for panels, but also other shapes.
  • the recipe start components include at least one silane compound which is tetramethyl ortho- silicate (TMOS), also known as tetramethoxysilane, or a mixture of tetramethyl orthosilicate (TMOS) and tetraethyl orthosilicate (TEOS), the latter also known as tetraethoxysilane.
  • TMOS tetramethyl ortho- silicate
  • TEOS tetraethyl orthosilicate
  • supply of further recipe components are optionally performed at either the mixing in the mixer, in the extraction or in the heating process.
  • Examples of such possible further recipe components are carbon fibers, rock wool, glass wool, mineral wool, glass fibers, wavelength shifters, iron, titanium or tin compounds, boron compounds and silane compounds, or a mixture thereof.
  • one specific embodiment is a panel or a halfpipe-shaped body which is produced by a process according to the present invention.
  • Two other possible specific embodiments is an energy window comprising a transparent or translucent panel according to the present invention and an insulating material comprising an opaque panel according to the present invention.
  • the present invention describes a body of a silica aerogel material which has excellent properties, such as a very low coefficient of thermal conductivity, i.e. is highly insulating. Furthermore, various specific embodiments are described where the body, such as e.g. a panel, according to the present invention has been given various advantageous properties, such as high transparency, increased mechanical stability and improved handling and transportation option, the latter being made by the fact that the panel has been encased in an encasing material.
  • the present invention describes processes for the produc- tion of a shaped silica aerogel material, such as e.g. a panel, which are both relatively energy efficient and safe in comparison with known technologies.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • General Engineering & Computer Science (AREA)
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  • Sustainable Energy (AREA)
  • Dispersion Chemistry (AREA)
  • Architecture (AREA)
  • Inorganic Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Electromagnetism (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Silicon Compounds (AREA)

Abstract

L'invention concerne un corps constitué d'un matériau aérogel de silice ayant d'excellentes propriétés, comme un très faible coefficient de conductivité thermique, et étant donc hautement isolant. Par ailleurs, l'invention concerne différents modes de réalisation spécifiques. Selon la présente invention, le corps présente différentes propriétés avantageuses, comme haute transparence, stabilité mécanique accrue et plus grande facilité de manipulation et de transport, cette dernière propriété étant due au fait que le corps, p. ex. un panneau, est enrobé dans un matériau d'enrobage. De plus, la présente invention concerne également des procédés de production d'un corps en aérogel de silice, comme par exemple un panneau.
PCT/SE2010/050004 2009-01-08 2010-01-04 Aérogel de silice en tant que panneau transparent dans une fenêtre permettant des économies d'énergie Ceased WO2010080060A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0950003-4 2009-01-08
SE0950003A SE0950003A1 (sv) 2009-01-08 2009-01-08 Silikaaerogelkropp som transparent panel i energifönster

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WO2010080060A1 true WO2010080060A1 (fr) 2010-07-15

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PCT/SE2010/050004 Ceased WO2010080060A1 (fr) 2009-01-08 2010-01-04 Aérogel de silice en tant que panneau transparent dans une fenêtre permettant des économies d'énergie

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SE (1) SE0950003A1 (fr)
WO (1) WO2010080060A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013083474A1 (fr) 2011-12-09 2013-06-13 BSH Bosch und Siemens Hausgeräte GmbH Porte d'appareil ménager de traitement thermique
GR20150100145A (el) * 2015-03-26 2016-10-20 Πανεπιστημιο Πατρων Παθητικος δροσισμος υαλοπινακων με υδροφιλα διαφανη υλικα

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EP1707897A1 (fr) * 2003-12-03 2006-10-04 Dynax Corporation Panneau solaire
WO2007011988A2 (fr) * 2005-07-18 2007-01-25 Aspen Aerogels, Inc. Composites d'aerogel a geometries complexes
WO2007146945A2 (fr) * 2006-06-12 2007-12-21 Aspen Aerogels, Inc. Composites d'aérogel et de mousse

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US4327065A (en) * 1979-04-30 1982-04-27 Dardel Guy Von Method of preparing silica aerogel
EP1707897A1 (fr) * 2003-12-03 2006-10-04 Dynax Corporation Panneau solaire
US20060178496A1 (en) * 2005-02-07 2006-08-10 Industrial Technology Research Institute Silica aerogels with high-temperature hydrophobation synthesized by using co-precursor solutions
WO2007011988A2 (fr) * 2005-07-18 2007-01-25 Aspen Aerogels, Inc. Composites d'aerogel a geometries complexes
WO2007146945A2 (fr) * 2006-06-12 2007-12-21 Aspen Aerogels, Inc. Composites d'aérogel et de mousse

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Publication number Priority date Publication date Assignee Title
WO2013083474A1 (fr) 2011-12-09 2013-06-13 BSH Bosch und Siemens Hausgeräte GmbH Porte d'appareil ménager de traitement thermique
DE102011088093A1 (de) 2011-12-09 2013-06-13 BSH Bosch und Siemens Hausgeräte GmbH Tür für ein Haushalts-Wärmebehandlungsgerät
GR20150100145A (el) * 2015-03-26 2016-10-20 Πανεπιστημιο Πατρων Παθητικος δροσισμος υαλοπινακων με υδροφιλα διαφανη υλικα

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