WO1994015780A1 - Materiau de construction et d'isolation sous vide - Google Patents

Materiau de construction et d'isolation sous vide Download PDF

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Publication number
WO1994015780A1
WO1994015780A1 PCT/US1994/000105 US9400105W WO9415780A1 WO 1994015780 A1 WO1994015780 A1 WO 1994015780A1 US 9400105 W US9400105 W US 9400105W WO 9415780 A1 WO9415780 A1 WO 9415780A1
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WIPO (PCT)
Prior art keywords
article
chamber
bubbles
manufacture
air
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/US1994/000105
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English (en)
Inventor
Charles Novitsky
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to BR9403465A priority Critical patent/BR9403465A/pt
Priority to JP6516161A priority patent/JPH07508314A/ja
Priority to EP94906514A priority patent/EP0630318A4/fr
Publication of WO1994015780A1 publication Critical patent/WO1994015780A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3403—Foaming under special conditions, e.g. in sub-atmospheric pressure, in or on a liquid
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/08—Other methods of shaping glass by foaming
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • 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
    • E04B1/803—Heat insulating elements slab-shaped with vacuum spaces included in the slab
    • 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
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • 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
    • Y02A30/242—Slab shaped vacuum 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
    • Y02B80/10—Insulation, e.g. vacuum or aerogel insulation

Definitions

  • This invention relates to insulation and construction materials. In one of its aspects it relates to material used for thermal and acoustic insulation. In another of its aspects it relates to vacuum insulation materials i.e. insulating materials containing enclosed spaces in which the pressure is less than atmospheric pressure. In another of its aspects this invention relates to construction materials containing enclosed spaces in which the pressure is less than atmospheric pressure. In yet another of its aspects this invention relates to ultralight construction materials. In still another of its aspects this invention relates to the production of vacuum insulation materials. In still another of its aspects this invention relates to the production of construction materials containing enclosed spaces in which the pressure is less than atmospheric pressure. v 2. Description of the Prior Art
  • Vacuum insulation techniques have been known for use in various applications for both thermal and acoustic insulation material.
  • Such material makes use of the advantage of having a reduced number of molecules in a vacuum chamber encapsulated within the material so that the transfer of heat or sound is reduced as compared to material having chambers encapsulating gases at atmospheric pressure or higher pressures.
  • the greater the reduction of pressure within a vacuum chamber the more effective will be the barrier to the transfer of heat or sound energy through the chamber and increasing the ratio of open space to supporting structure also reduces the transfer of heat or sound through an insulating material.
  • the present invention eliminates the need to evacuate gases from filler supported structures and provides material that can retain its vacuum characteristic after being cut or machined.
  • the technique, described herein, that is used for producing vacuum insulation can be used, by the process of this invention, to produce construction materials i.e. materials, that because of the innate strength of the materials used, can be formed into shapes containing bubbles in which the contained gas is at a pressure less than atmospheric. Such construction materials are useful in constructing products in which the combination of lightness and strength of material is an asset.
  • bubbles having an internal pressure of less than atmospheric pressure can be incorporated into construction material at sufficiently high ratio to the total amount of solid material in the structure and encapsulating material that the resulting product would be buoyant in a fluid, liquid or gas, of greater density.
  • bubble includes any space surrounded by an enclosing material. It is used herein synonymously with void, chamber, pocket, interstice, area of space and other such terms. Also note that the terminology hereinafter describing the material of the invention as having at least one enclosed chamber therein refers to material that typically has numerous chambers or is filled with a multitude of chambers.
  • FIGURE 1 is a cut sample of a honeycomb textured insulating material in which bubbles of less than atmospheric pressure are encapsulated in a matrix of air- tight material with a stratum of reflective laminated, thereto.
  • FIGURE 2 is a cut sample of insulating material in which bubbles of less than atmospheric pressure are encapsulated in a matrix of material that is not air-tight and the matrix of the insulating material is encapsulated in an air-tight material.
  • a method for preparing an article of manufacture comprising at least one chamber enclosed by a solid, air-tight, encapsulating material, (a) the pressure inside the at least one chamber being less than atmospheric pressure, and (b) the encapsulating material of sufficient strength to maintain the integrity and the vacuum characteristic of the at least one chamber the method comprising: in an environment under less than atmospheric pressure (1) treating a material to provide a treated solid material having at least one enclosed chamber therein wherein the at least one enclosed chamber is under less than atmospheric pressure and (2) encapsulating the at least one enclosed chamber in a solid, air-tight, encapsulating material of sufficient strength to maintain the integrity and the vacuum characteristic of the at least one enclosed chamber.
  • an article of manufacture is prepared by treating a liquid material in an environment under less than atmospheric pressure to provide a treated solid material having at least one enclosed chamber therein under less than atmospheric pressure wherein the treated material on solidifying is air-tight thereby maintaining the vacuum characteristic of the at least one chamber and of sufficient strength to maintain the integrity of the at least one chamber when formed into an article of manufacture.
  • the material is treated to produce bubbles under atmospheric pressure or under a slight vacuum and then the material containing at least one enclosed chamber therein is transferred into an environment of greater vacuum so that the enclosed chambers are allowed to expand thereby decreasing the pressure within the enclosed chambers before the material sets or hardens to provide air-tight enclosure of the chambers.
  • Another aspect of the invention involves (1) treating a molten material to provide at least one chamber therein, (2) while still in the molten state introducing the material with at least one chamber therein into a mold, (3) allowing the material in the mold to cool below the melting temperature thereby providing a solidified molded article and (4) removing the molded article from the mold.
  • a further aspect of the invention involves foaming a foamable composition of (a) foamable material chosen from the group consisting of metal, glass, plastic and concrete and (b) foaming agent to provide a multiplicity of bubbles, with the bubbles under less than atmospheric pressure, in a foamed article of manufacture.
  • a method for preparing an article of manufacture which entails, in an environment under less than atmospheric pressure (1) treating a material to provide a treated material having at least one enclosed chamber therein in which the at least one enclosed chamber is under less than atmospheric pressure and (2) encapsulating the at least one enclosed chamber in a solid, air-tight, encapsulating material of sufficient strength to maintain the integrity and the vacuum characteristic of the at least one enclosed chamber thereby providing an air-tight, encapsulated article having at least one enclosed chamber within which the pressure is less than atmospheric pressure.
  • Using the procedure set out above can provide an article of manufacture in which there are (1) a multiplicity of chambers enclosed by the material forming the chamber walls in which the material forming said chamber walls is of sufficient strength to maintain the integrity of the structure of the chambers and in which the pressure within at least some of the chambers is less than atmospheric and (2) an air-tight covering enclosing the multiplicity of chambers.
  • a method for treating a molten, encapsulating material in an environment under less than atmospheric pressure to provide a treated, molten, encapsulating material having at least one enclosed chamber therein within which the pressure is less than atmospheric pressure wherein the treated, encapsulating material upon solidifying is (1) air-tight thereby maintaining the vacuum characteristic of the at least one chamber and (2) of sufficient strength to maintain the integrity of the at least one chamber, thereby providing an air-tight article containing at least one chamber within which the pressure is less than atmospheric pressure.
  • the process described immediately above can provide an article of manufacture having a multiplicity of chambers enclosed in air-tight encapsulation by the material forming the chamber walls in which the material forming the chamber walls is of sufficient strength to maintain the integrity of the structure of said chambers and in which the pressure within at least some of said chambers is less than atmospheric.
  • a method for foaming a foamable material and encapsulating the foamed material in a solid material that is air-tight and of sufficient strength to maintain the integrity of the encapsulated foamed material with both the foaming and the encapsulating completed in an environment under less than atmospheric pressure and subsequently transferring the encapsulated foamed material into an environment at atmospheric pressure to provide a material encapsulated in an air-tight covering having at least one enclosed chamber therein within which the pressure is less than atmospheric pressure.
  • the product is described as a foamed material in which bubbles or voids formed are enclosed in air-tight encapsulation by the foamed material itself and in which the pressure within the encapsulated bubbles or voids is less than atmospheric.
  • the product is described as being composed of (1) a foamed material in which the bubbles formed are enclosed by the material foamed and in which the pressure within the enclosed bubbles is less than atmospheric and (2) an air-tight covering encapsulating the foamed material.
  • Essential to this invention is an environment of reduced pressure within which articles of manufacture containing internal open or gaseous spaces can be produced.
  • the means for providing such an environment requires the use of an ample sized production chamber with access through air locks and control of the internal pressure to provide a desired state of vacuum.
  • Means for providing this environment are well known to those of ordinary skill in the art. It is doubted that an amount of vacuum reasonably close enough to a perfect vacuum could be maintained in a facility on the Earth's surface that formation of bubbles in a liquid would be impaired.
  • the pressure at which the production environment is controlled is, therefore, a decision based on the knowledge that the less the pressure in the bubbles formed the greater the insulation value and the practical considerations of maintaining a high state of vacuum in the production facility.
  • the pressure in the bubbles in the finished product is in a range of about 10" 12 mmHg to about 760mmHg, preferably in a range of about lC ⁇ mmHg to about 10' 2 mmHg, and most preferably in a range of about 10"mmHg to about 10"mmHg.
  • the invention is based on the knowledge that forming bubbles, voids or vacuum spaces in an environment of reduced pressure will produce areas of space having relatively the same internal pressure as the external environment in which they are produced. Advantage is taken of this fact in different ways: in an environment of reduced pressure (1) a bubble can be blown or bubbles can be formed within an encapsulating material that itself forms an air-tight encasement for the bubbles or (2) bubbles can be formed in a material which is not itself air-tight but which is then encapsulated within an air ⁇ tight encasement and subsequent to the air-tight encapsulation either (1) or (2) is removed from the environment of reduced pressure into an environment- of atmospheric pressure.
  • Bubbles can also be produced as in (1) or (2) in an environment that is not of pressure below atmospheric and, prior to the setting or hardening of the material, it can be moved into an environment of reduced pressure allowing expansion of the bubbles. Upon hardening, the material encapsulates the bubbles.
  • the internal pressure of the bubbles remains at the reduced pressure at which the bubbles were produced and because of the strength of the structure surrounding the bubbles the difference between the external pressure and the pressure within the bubbles does not cause the structure to collapse.
  • the articles can be described as having a chamber or chambers therein within which there is a reduced pressure or as having a chamber within which there is less than atmospheric pressure.
  • the present invention can take advantage of such technology as the use of production stations in space and the use of robotics.
  • a space station can easily provide the environment of reduced pressure required in the present invention.
  • Production chambers in space can more easily be provided with a desired, subatmospheric, operating pressure than can similar work places on the Earth's surface.
  • Programmed robots can operate effectively in an environment of reduced pressure either on a space station or on the Earth.
  • useful products that can be made by the process of this invention are: (1) monoliths of insulating material that can be sliced or shaped, as by machining, as desired;
  • strings of bubbled material or interlocked bubble beads that can be incorporated into fabric for use in clothing, upholstery and the like;
  • liquid can include a true liquid, a molten material or a liquid slurry; (2) can be manipulated to enclose at least one bubble therein and (3) then can be solidified to encapsulate the at least one bubble in an air-tight enclosure.
  • the useful materials include, among others, metals, metal alloys, polymeric materials (preformed polymers) , glass, glass-ceramics, metallic glass, wax, concrete and mixtures thereof, members of these groups can provide the necessary structural strength, the ability to provide air-tight encapsulation and the ability to be manipulated into the desired products.
  • Metals, glass and thermoplastics can be melted and molded into desired shapes, and in the molten state can be blown into bubbles or can be treated to disperse bubbles therein. With sufficiently rapid cooling all of these materials can be solidified with structure that will maintain the integrity of the bubbles and provide an air ⁇ tight encapsulation of the bubbles.
  • the techniques for producing molded articles useful in this invention are well known in the art and do not constitute a novel feature of this invention.
  • any of the materials useful for making foams that do not in the preparation of the foam form air-tight encapsulation of the bubbles formed can be foamed in an environment of pressure less than atmospheric pressure and subsequently the foamed product or any portion thereof can, while still in the environment of pressure less than atmospheric pressure, be encapsulated in an air-tight covering material.
  • foamed materials suitable for this mode of the invention are such flexible plastic foams as polyurethane, rubber latex, polyolefin and vinyl polymers; such rigid plastic foams as polystyrene, polyurethane, polyepoxy and polyvinyl chloride. Techniques for producing foams, either as free forms or in molded shapes, are well known in the art.
  • Some of the materials cited above can also be formed so that at least a portion of the bubbles formed therein will be encapsulated in an air-tight enclosure of the foamed material as it is foamed.
  • Such materials are flexible foams of rubber latex, polyolefin, and vinyl polymers; rigid foams of polystyrene, polyepoxy and polyvinyl chloride. Any material that can be melted, thereafter treated to form at least one bubble therein and solidified retaining the at least one bubble in air-tight encapsulation is useful by a process of this invention.
  • These same materials are useful by a process of this invention to encapsulate foamed material.
  • these materials are glass, metals and thermoplastics.
  • thermoplastics useful in the present invention are polyolefin, nylon, acrylic resin, polystyrene, polysulfone, poly(arylene sulfide) , their derivatives and mixtures thereof.
  • Thermosetting materials that can be caused to form bubbles or that can be applied to form air-tight encapsulation of foamed material can also be used in a process of this invention.
  • the useful thermosetting materials are phenolics, alkyds, amino resins, crosslinkable polyolefins, polyesters, epoxides, silicones, natural rubber and mixtures thereof.
  • any metal, or combination of metals with other additives in an alloy, that can be used for construction is suitable for the purposes of this invention among those most favored are aluminum, magnesium, and steel, including carbon steel. It should be emphasized that materials suitable for use as construction materials produced by a process of this invention will innately be superior in thermal and acoustic insulation characteristics to products made in the same manner except for having bubbles therein in which the internal pressure is greater.
  • an insulating material 1 is composed of an encapsulating matrix 5 that is air-tight in which is dispersed a multiplicity of chambers 7 having an internal pressure less than atmospheric and to which is laminated a layer 9 of reflective material such as aluminum foil.
  • an insulating material 1 is composed of an encapsulating matrix 5 that is not air-tight in which is dispersed a multiplicity of chambers 7 having an internal pressure less than atmospheric with the matrix 5 encased in an encapsulating layer of air-tight material.
  • Example I is meant to be illustrative of the current best mode for carrying out a process of the present invention. These examples should not be taken as restricting the scope of the invention.
  • Example I is meant to be illustrative of the current best mode for carrying out a process of the present invention. These examples should not be taken as restricting the scope of the invention.
  • the temperature of 1000 ml of nylon in a beaker is raised to a temperature of 230°C, exceeding the melting temperature of 223°C.
  • the molten nylon is agitated using an agitator blade that introduces gas bubbles from the chamber into the molten material and, while the molten material retains the bubbles, the material is poured into a rectangular bar shaped mold and cooled rapidly to solidify the nylon retaining the bubble structure.
  • the cooled, now solidified nylon bar is removed from the mold.
  • the bubble-containing, nylon bar is removed from the vacuum chamber into ambient conditions as a formed material having contained therein a multiplicity of chambers at less than atmospheric pressure. The formed material is cut in half revealing internal chambers at the cut edges.
  • One of the cut edges is abraded to round the cut end of the bar revealing further evidence of other chambers which are opened by the abrasion.
  • This example shows that a molded bar containing chambers at less than atmospheric pressure can be made of an air tight material which can then be cut or further shaped.
  • Example II In a chamber having an internal pressure controlled at 10" 2 mmHg the temperature of a 1000 ml steel crucible filled with glass beads is raised to a temperature of 1200°C, exceeding the melting temperature of about 1100°C.
  • the molten glass is aerated by introducing gas from the chamber in the form of small bubbles into the molten material and, while the molten material retains the bubbles, the material is poured into a rectangular bar shaped mold and cooled to solidify the glass retaining the bubble structure.
  • the cooled, now solidified glass bar is removed from the mold.
  • the bubble-containing, glass bar is removed from the vacuum chamber into ambient conditions as a formed material having contained therein a multiplicity of chambers at less than atmospheric pressure. This example shows that a molded bar containing chambers at less than atmospheric pressure can be made of glass.
  • a chamber having an internal pressure controlled at 10" 2 mmHg the temperature of a 1000 ml steel crucible filled with aluminum beads is raised to a temperature of 700°C, exceeding the melting temperature of about 660°c.
  • the molten aluminum is aerated by introducing gas from the chamber in the form of small bubbles into the molten material and, while the molten material retains the bubbles, the material is poured into a rectangular bar shaped mold and cooled to solidify the aluminum retaining the bubble structure.
  • the cooled, now solidified glass bar is removed from the mold.
  • the bubble-containing, aluminum bar is removed from the vacuum chamber into ambient conditions as a formed material having contained therein a multiplicity of chambers at less than atmospheric pressure. This example shows that a molded bar containing chambers at less than atmospheric pressure can be made of metal.
  • Example IV In a chamber having an internal pressure controlled at 10" mmHg polypropylene glycol is treated with diisocyanate in the presence of water and a tin soap catalyst to produce a polyurethane foam.
  • the foam contains a bubbled structure which, because the material is not air tight, has bubbles at the pressure of the chamber.
  • a 10 inch x 3 inch x 3 inch bar is cut from the foam and encased in a 1/16 inch nylon wrapper which is heat sealed around the bar to form an air-tight enclosure. The sealed bar is removed from the reduced pressure chamber to atmospheric pressure. The bar is then laminated on one side with aluminum foil to produce a bar foamed at reduced pressure, covered with an air ⁇ tight sealing layer and laminated on one side with a reflective surface.
  • a polyurethane foam is produced as in Example IV except the foam is produced at atmospheric pressure.
  • the non-air-tight foam is then moved into a chamber having an internal pressure controlled at 10 ⁇ mmHg and allowed to come to equilibrium of internal and external pressures.
  • a 10 inch x 3 inch x 3 inch bar is cut from the foam and encased in a 1/16 inch nylon wrapper which is heat sealed around the bar to form an air-tight enclosure. The sealed bar is removed from the reduced pressure chamber to atmospheric pressure.
  • Example VI In a chamber having an internal pressure controlled at 10 ⁇ mmHg, bubbles of molten nylon are blown. As the bubbles are blown the pressure on the inside of the bubble seeks to equilibrate with the outside pressure providing an internal pressure of less than atmospheric.
  • the bubbles of approximately 1 mm diameter can be blown to detach as individual bubbles or can be blown to form a continuous string. In either case the individual bubbles or portions of a continuous string of bubbles are allowed to solidify to provide air-tight encasement of the bubbles and are removed to an environment of atmospheric pressure and used in large amounts as fill-type insulation.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Acoustics & Sound (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Laminated Bodies (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)

Abstract

Procédé de fabrication de matériaux (1) de construction et d'isolation sous vide selon lequel on produit des matériaux solides contenant des bulles telles que des bulles individuelles, des bulles groupées, de la matière alvéolaire et autre dans un milieu dans lequel la pression est inférieure à la pression atmosphérique puis on enferme les bulles produites dans un matériau (5) d'encapsulage hermétique dans le milieu prédéfini. Lorsque les matériaux de construction et d'isolation sont placés dans un milieu dans lequel la pression est du type atmosphérique les bulles conservent leur qualité de vide.
PCT/US1994/000105 1993-01-08 1994-01-06 Materiau de construction et d'isolation sous vide Ceased WO1994015780A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BR9403465A BR9403465A (pt) 1993-01-08 1994-01-06 Material de isolamento a vácuo e de construção
JP6516161A JPH07508314A (ja) 1993-01-08 1994-01-06 真空遮断および作成材料
EP94906514A EP0630318A4 (fr) 1993-01-08 1994-01-06 Materiau de construction et d'isolation sous vide.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US226193A 1993-01-08 1993-01-08
US08/002,261 1993-01-08

Publications (1)

Publication Number Publication Date
WO1994015780A1 true WO1994015780A1 (fr) 1994-07-21

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ID=21699951

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/000105 Ceased WO1994015780A1 (fr) 1993-01-08 1994-01-06 Materiau de construction et d'isolation sous vide

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EP (1) EP0630318A4 (fr)
JP (1) JPH07508314A (fr)
CN (1) CN1101485A (fr)
BR (1) BR9403465A (fr)
CA (1) CA2131293A1 (fr)
WO (1) WO1994015780A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0773861A4 (fr) * 1994-07-21 1998-12-23 Charles Novitsky Structure contenant un vide et son procede de production
EP0892120A3 (fr) * 1997-06-25 2000-03-15 UVT GmbH Panneau isolant à vide
WO2008071373A3 (fr) * 2006-12-13 2008-09-18 Woschko Winlite Gmbh Procédé de fabrication d'un panneau à vide intérieur, panneau à vide intérieur ainsi obtenu et maçonnerie réalisée à l'aide de ce panneau

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104773947A (zh) * 2015-03-11 2015-07-15 杨敏 一种保温玻璃泡板及其制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024309A (en) * 1975-03-17 1977-05-17 Ronald P. Wilder Foam glass structural element and method of producing
US4079162A (en) * 1974-03-20 1978-03-14 Aim Associates, Inc. Soundproof structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5796852A (en) * 1980-12-09 1982-06-16 Matsushita Electric Industrial Co Ltd Heat insulating material
JPS58145425A (ja) * 1982-02-23 1983-08-30 Daihatsu Motor Co Ltd ウレタン発泡体を使用する製品の製法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079162A (en) * 1974-03-20 1978-03-14 Aim Associates, Inc. Soundproof structure
US4024309A (en) * 1975-03-17 1977-05-17 Ronald P. Wilder Foam glass structural element and method of producing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0630318A4 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0773861A4 (fr) * 1994-07-21 1998-12-23 Charles Novitsky Structure contenant un vide et son procede de production
EP0892120A3 (fr) * 1997-06-25 2000-03-15 UVT GmbH Panneau isolant à vide
WO2008071373A3 (fr) * 2006-12-13 2008-09-18 Woschko Winlite Gmbh Procédé de fabrication d'un panneau à vide intérieur, panneau à vide intérieur ainsi obtenu et maçonnerie réalisée à l'aide de ce panneau

Also Published As

Publication number Publication date
CA2131293A1 (fr) 1994-07-21
CN1101485A (zh) 1995-04-12
JPH07508314A (ja) 1995-09-14
BR9403465A (pt) 1997-08-19
EP0630318A4 (fr) 1995-07-19
EP0630318A1 (fr) 1994-12-28

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