CN108625740B - Composite glass with built-in aerogel and preparation method thereof - Google Patents

Composite glass with built-in aerogel and preparation method thereof Download PDF

Info

Publication number
CN108625740B
CN108625740B CN201710161775.0A CN201710161775A CN108625740B CN 108625740 B CN108625740 B CN 108625740B CN 201710161775 A CN201710161775 A CN 201710161775A CN 108625740 B CN108625740 B CN 108625740B
Authority
CN
China
Prior art keywords
glass
aerogel
low
composite
sealing
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.)
Active
Application number
CN201710161775.0A
Other languages
Chinese (zh)
Other versions
CN108625740A (en
Inventor
卢梦言
卢军
卢孟磊
张丁日
卢斌
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.)
Changsha Xingna Aerogel Co ltd
Original Assignee
Changsha Xingna Aerogel Co ltd
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 Changsha Xingna Aerogel Co ltd filed Critical Changsha Xingna Aerogel Co ltd
Priority to CN201710161775.0A priority Critical patent/CN108625740B/en
Publication of CN108625740A publication Critical patent/CN108625740A/en
Application granted granted Critical
Publication of CN108625740B publication Critical patent/CN108625740B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • E06B3/6715—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased thermal insulation or for controlled passage of light
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/06—Joining glass to glass by processes other than fusing
    • C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
    • 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
    • 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
    • E04C2/546—Slab-like translucent elements made of glass bricks
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • E04D3/06—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • E04D3/18—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of specified materials, or of combinations of materials, not covered by any of groups E04D3/04, E04D3/06 or E04D3/16
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/663—Elements for spacing panes
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/673—Assembling the units
    • 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
    • Y02B80/22—Glazing, e.g. vaccum glazing

Abstract

The invention provides a composite glass with a built-in aerogel, which comprises a glass sealing body and a vacuum air extractor arranged on the glass sealing body, wherein the glass sealing body consists of two pieces of glass, a spacing body between the two pieces of glass and an aerogel supporting body arranged in a glass cavity, and the upper surface and the lower surface of the spacing body are connected with the two pieces of glass through low-temperature sealing materials. The manufacturing method comprises the following steps: (1) laying a support; (2) laying a low-temperature sealing material; (3) laminating; (4) sealing by fusing; (5) and (6) vacuumizing. The composite glass with the aerogel arranged therein disclosed by the invention has better heat insulation and light transmission, and is suitable for the fields of doors and windows, curtain wall glass, daylighting roofs and the like of green buildings, ultralow-energy buildings and near-zero-energy buildings.

Description

Composite glass with built-in aerogel and preparation method thereof
Technical Field
The invention relates to the technical field of glass preparation, in particular to composite glass with a built-in aerogel and a preparation method thereof.
Background
In the prior art, glass used for buildings is mainly used for sealing, lighting and heat preservation. However, in winter in cold areas, the heat insulation effect of glass is not ideal, and in summer in hot-summer and cold-winter areas or hot-summer and warm-winter areas, the heat insulation effect of glass is not ideal. Along with the high-speed development of economy in China, the requirements of people on life quality are higher and higher, the areas of doors, windows and glass curtain walls of buildings are larger and larger, and the proportion of heat exchange through the doors, the windows and the glass curtain walls in heat exchange between the buildings and the outside is larger and larger. In order to reduce the heat exchange through glass doors, windows and curtain walls, a plurality of heat-insulating glass is developed at home and abroad in recent years, and the glass is mainly divided into three types according to the structure, (1) hollow glass consisting of two layers or multiple layers of common glass; (2) hollow glass formed by glass plated with low-radiation films; (3) the vacuum glass is formed by pumping negative pressure from a support body arranged at the middle of double-layer glass. The heat transfer coefficient of the hollow glass is high, and the sealing quality is determined by the service life of the hollow glass; the low-radiation coated glass can prevent sunlight from entering a room to the maximum extent in summer and prevent far infrared radiation from the outside to the maximum extent, but is obviously not suitable for preventing outdoor heat energy from entering the room in winter needing heating, and influences the transmittance of visible light. The vacuum glass is one of ideal energy-saving glass due to the excellent heat preservation performance and the characteristics of thinness, lightness and the like. However, due to the fact that the point supporting bodies are arranged in the vacuum cavity, local stress concentration is easy to cause, the impact resistance is reduced, potential safety hazards exist, the point supporting bodies form a thermal bridge, further reduction of the heat transfer coefficient of the vacuum glass is further limited, and the theoretical limit value cannot be reached. In addition, the increase of the thickness of the vacuum layer is beneficial to further reducing the limit level of the heat transfer coefficient, but the sealing thickness of the cavity is difficult to break through 1mm due to the limitation of the existing vacuum glass sealing technology. Therefore, there is a need to develop energy-saving glass having an energy-saving effect comparable to that of vacuum glass and higher safety.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the composite glass with the built-in aerogel and the preparation method thereof have the advantages that the energy-saving effect can be comparable to that of vacuum glass, the safety is higher, the composite glass with the built-in aerogel produced by the preparation method has good heat insulation and heat preservation performance and light transmission performance, the safety performance is excellent, and the composite glass can be widely applied to the fields of doors and windows, curtain wall glass, lighting roofs and the like of green buildings, ultra-low energy consumption green buildings, near-zero energy consumption green buildings and the like.
The solution of the invention is: (1) and adopting a preset spacer low-temperature sealing technology. Researches find that the sealing thickness of the existing vacuum glass cavity is difficult to break through 1mm, and is mainly limited by the capillary force of a gap, the capillary force cannot meet the requirement that the molten sealing material is limited in the gap formed by two pieces of glass, the satisfactory sealing quality cannot be obtained, and the product percent of pass is low. In order to realize the sealing of the large-gap vacuum glass, the spacer is placed in the welding seam in advance, and then the sealing material is placed between the glass and the spacer, so that the sealing problem of the large-gap vacuum glass is solved. In addition, by arranging the spacing body, the mechanical property of the vacuum glass can be improved through composite strengthening. (2) Adopts a transparent heat-insulating surface support body technology. The transparent aerogel with super thermal-insulated heat preservation performance of itself is used as vacuum glass's supporter, replaces traditional some supporter, is about to traditional some support converts the face into and supports, eliminates the local stress concentration problem that produces because of some supporter from the root to show improvement intracavity negative pressure glass's security performance. In addition, the aerogel support body with ultralow heat conductivity coefficient replaces the traditional supportThe vacuum glass support can also reduce the thermal bridge effect caused by the traditional support with higher heat conductivity coefficient, and further reduces the heat transfer coefficient limit of the vacuum glass. (3) The synergistic effect technology of aerogel and negative pressure is adopted. Generally, the thermal conductivity of the aerogel under normal pressure is in the range of 0.010-0.015W/m.k. Researches find that the synergistic effect generated by the negative pressure technology and the nanometer size of the aerogel can completely obstruct the convection heat transfer of the gas in the pores of the aerogel in the cavity, the heat conductivity coefficient of the aerogel is easily reduced to be less than 0.004W/m.k, the thickness of the aerogel is less than 5mm, and the heat insulation level of the vacuum glass (the heat transfer coefficient is about 0.5W/m) can be achieved2K) to solve the problem of thinning of energy-saving glass.
The solution of the invention is realized by the following steps: a preparation method of composite glass with an aerogel inside comprises the following steps:
(1) laying a support, disposing an aerogel support on the glass;
(2) laying a low-temperature sealing material, laying the low-temperature sealing material at the sealing position of the peripheral edge of the glass, placing the spacer on the laid low-temperature sealing material, and laying the low-temperature sealing material on the spacer;
(3) laminating, namely placing another piece of glass on the pre-assembly obtained in the step (2);
(4) sealing by fusing, namely heating the pre-assembly obtained in the step (3) to a low-temperature sealing material for fusing and sealing to obtain a glass sealing body containing the aerogel support body;
(5) and (4) vacuumizing, and exhausting the glass sealing body through a vacuum air exhaust device.
Therefore, through the steps, the aerogel composite glass which takes at least two pieces of glass as a shell, is provided with at least one sealed cavity of a vacuum air extractor and is internally provided with the aerogel support body can be obtained. The energy-saving effect of the aerogel composite glass with the built-in aerogel support body can be comparable to that of vacuum glass, and the transparent aerogel arranged in the aerogel composite glass has excellent heat insulation performance and few gas molecule convection heat phenomena caused by vacuum in the cavity, so that the obtained built-in aerogel composite glass has very excellent heat insulation performance. And the point support replacement that current vacuum glass was supported with glass's built-in aerogel supporter is for the face to support, and the security is higher, in addition, because the aerogel has better anti compressive deformation characteristic, can support effectively because of the compressive stress effect that the vacuum produced in the cavity, avoids stress concentration phenomenon simultaneously, is the super energy-conserving glass of a safe type. Therefore, the composite glass with the built-in aerogel produced by the preparation method not only has good heat insulation performance, but also has excellent safety performance, and also solves the problems that the aerogel support body is reinforced and edge-sealed by adopting a low-temperature sealing material when the thickness of the aerogel support body exceeds the thickness of the existing vacuum glass support body.
On the basis, the surface of the glass sealing part is pretreated and moistened before the manufacturing step of the glass cavity body, namely the surface of the glass sealing part is cleaned by acid or alkaline solution to remove oil stains and impurities, and then a layer of wetting agent is coated. Therefore, the surface tension of the glass sealing part is reduced, and the interface bonding strength between the glass surface and the low-temperature sealing material is increased.
In another technical solution of the present invention, based on the above, the shape of the aerogel support is one or more of flat plate, granule, column, and irregular body. Wherein, the abnormal shape body is a cylinder and a flat-plate integrated molding structure. So, when the aerogel supporter is the graininess, fill up the cavity in order to play the supporting role through the close processing, when the aerogel supporter is other shapes, be full of the aerogel supporter or array distribution in the glass cavity, and thickness highly suits in order to play the supporting role with the cavity, from this with itself having super thermal-insulated thermal insulation performance in built-in aerogel composite glass inner chamber, the supporter is made to large-size transparent aerogel, realize multiple modes such as face supporting, the piece supports, the post supports, diversified support, avoided the thermal bridge phenomenon that leads to because of the higher tradition point of coefficient of heat transfer aerogel supporter on the one hand, the thermal-insulated thermal insulation performance of built-in aerogel composite glass has further been improved, on the other hand has thoroughly eliminated the condition that produces stress concentration from the root, thereby show improvement built-in composite glass's security performance.
Another technical solution of the present invention is that, on the basis of the above, the aerogel support material further comprises an aerogel support or an aerogel composite support having a low-density surface layer and a high-density core. Thus, the thermal conductivity of the aerogel is usually not less than 0.010W/m.k, and the heat transfer coefficient is controlled to the level of the heat transfer coefficient k of the vacuum glass (k value is about 0.5W/m.k)2K), the thickness of the traditional aerogel needs at least 15mm, the aerogel is cooperated with a negative pressure technology, the negative pressure technology and the nano size of the aerogel are implemented to generate a synergistic effect, the convection heat transfer of gas in pores of the aerogel in the cavity is completely blocked, and the heat conductivity coefficient of the aerogel is reduced to be below 0.004W/m.k, so that the thickness of the aerogel is greatly reduced, and the optimized thickness is 1 mm-5 mm. When the aerogel support body is low-density surface layer and high-density core, the aerogel support body with higher internal strength and elastic surface layer can be obtained, the requirement of slight expansion or contraction of a glass cavity caused by the ambient temperature in the use process of the glass can be met, and the excessive stress concentration of the aerogel support body is avoided; when the aerogel support body is the aerogel composite support body, the aerogel support body has good thermal insulation performance, and the compressive strength of the aerogel support body is enhanced.
Another technical solution of the present invention is to provide that, based on the above, the aerogel composite support body in the aerogel support body further includes one or two of an aerogel/glass composite support body and an aerogel/resin composite support body. So, adopt aerogel and glass or resin composite technology, by light, the transparent aerogel that itself has excellent thermal-insulated heat preservation performance, the performance of making an uproar falls in the sound insulation, the energy-absorbing characteristic is as the functional component, use glass or resin to make the binder phase, the composite support body of aerogel and glass or resin that produces, have the excellent characteristic of aerogel and the good mechanical properties of glass or resin concurrently, both had good thermal-insulated heat preservation performance on the one hand, on the other hand can obtain good security performance and sound insulation again and fall the performance of making an uproar, in addition still has good mechanical properties.
Another technical solution of the present invention is that, on the basis of the above, a method for preparing the aerogel/glass composite support body in the aerogel composite support body comprises:
(1) mixing materials, namely uniformly mixing glass powder and aerogel;
(2) melting, namely heating the glass powder in the mixture obtained in the step (1) to be melted to obtain semi-solid mixed glass melt;
(3) and (3) molding, namely pouring the mixed glass melt obtained in the step (2) into a mold, and cooling and solidifying.
Thus, through the steps, the aerogel/glass composite support body with heat insulation and preservation performance, which is composed of the aerogel and the glass phase bonded with the aerogel, can be obtained.
On the basis, the preparation method of the aerogel/resin composite support body in the aerogel support body comprises the following steps:
(1) mixing materials, namely uniformly mixing the aerogel and the resin powder;
(2) paving, namely paving a layer of mixture obtained in the step (1) on a mould substrate;
(3) melting, namely rapidly heating the resin powder in the mixture obtained in the step (2) to be molten in a step scanning mode by using a laser;
(4) and (3) alternately spreading and melting, and alternately repeating the step (2) and the step (3) on the previous deposition layer for solidification.
Thus, through the steps of mixing, paving, heating by a laser and the like, the aerogel/resin composite support body which is composed of aerogel and a resin phase bonding the aerogel and has heat insulation and preservation performance can be obtained.
On the basis, when the sheet combining step and the melt sealing step are carried out in a vacuum environment, the subsequent vacuumizing step is not needed, and the vacuumizing step can be carried out again to achieve a better effect.
On the basis, a transparent adhesive is arranged between the contact surfaces of the aerogel support body and the glass. So, use transparent gluing agent can be fixed with aerogel supporter and glass internal surface connection to play better supporting role.
On the basis, the low-temperature sealing material is low-temperature glass powder or a low-temperature metal edge sealing material. Therefore, the low-temperature sealing material is adopted for sealing, so that the annealing phenomenon of toughened glass or semi-toughened glass caused by overhigh sealing temperature can be avoided, and the physical property of the toughened glass or the semi-toughened glass is reduced; the sealing welding of the glass and the spacer is realized by carrying out the melt sealing through the low-temperature glass powder or the low-temperature metal edge sealing material, and the requirement of high vacuum degree is met, so that the service life of the built-in aerogel composite glass is effectively prolonged.
On the basis, the other technical scheme of the invention is that the low-temperature metal edge sealing material in the low-temperature sealing material is one of indium, indium alloy, tin and tin alloy. Thus, the melting point of low temperature metals such as indium, indium alloys, tin alloys, etc. generally does not exceed the annealing temperature of the glass.
On the basis, one or more of metal strips, metal nets or metal wires are arranged in the low-temperature sealing material 4. Therefore, the metal strip, the metal net or the metal wire are arranged in the sealing edge, so that on one hand, when the glass to be sealed is heated and sealed by melting, the temperature of the metal strip, the metal net or the metal wire is raised and the low-temperature sealing material is melted, and further the glass is sealed; on the other hand, the metal strip, the metal mesh or the metal wire is used as a solid reinforcing phase in the low-temperature sealing material and plays a supporting role between the two glass plates.
On the basis, the spacer is one of a ceramic spacer, a metal spacer and a composite material spacer. The spacer can also be a heat-insulating spacer, wherein the ceramic spacer mainly comprises a glass spacer, a traditional ceramic spacer and the like, the metal spacer mainly comprises an aluminum spacer, an aluminum alloy spacer, a stainless steel spacer and the like, and the composite material spacer mainly comprises a plastic steel spacer, an aluminum-plastic spacer, a composite adhesive tape, a glass fiber reinforced composite spacer and the like. So, because aerogel supporter thickness is thicker than traditional supporter, if use low temperature sealing material directly to two glass seal, because low temperature sealing material extension is excessive, lead to sealing edge portion gap or hourglass phenomenon to appear, influence vacuum glass's leakproofness, consequently, melt again after presetting the interval body between two glass and seal, can solve on the one hand because the sealing problem that low temperature sealing material extension excessively arouses, on the other hand can also play main supporting role, reduce the stress of aerogel supporter and concentrate excessively, negative pressure glass's bending resistance has further been improved, compressive strength.
On the basis, the other technical scheme of the invention is that the heating mode of the melt seal is one of laser heating, electron beam heating and microwave heating. Therefore, the sealing process can be realized by integrally heating the glass sealing body to the melting of the low-temperature sealing material, and the glass to be sealed can be locally heated by adopting modes such as laser heating, electron beam heating, microwave heating and the like, so that the metal strip, the metal mesh or the metal wire arranged in the low-temperature sealing material is heated up in an induction manner and the low-temperature sealing material is melted, and the sealing of the glass is realized.
On the basis, the other technical scheme of the invention is that the surface of the glass sealing part is pretreated and moistened before the manufacturing step of the glass cavity body, and the method specifically comprises the following steps: cleaning the surface of the glass sealing part by using an acidic or alkaline solution, and coating a layer of wetting agent on the surface of the glass sealing part; the wetting agent is one or more of sodium dodecyl sulfate, lauryl sulfate, dialkyl sulfosuccinate, castor oil sulfate, alkyl pyridinium chloride, alkylphenol polyoxyethylene, polyoxyethylene alkyl ether, polyoxyethylene glycol alkyl ester and acetylene glycol. Thus, typically the acidic solution is H2SO4And HNO3The alkaline solution is NaOH or Na2CO3The surface of the sealing part of the glass 1 is firstly cleaned by acid solution or alkaline solution to achieve the purpose of removing oil stains and impurities, so that the next step of wetting treatment is facilitated; then againAnd a layer of wetting agent is coated on the surface of the glass sealing part after pretreatment, so that the surface tension of the sealing part of the glass 1 is reduced, the purpose of increasing the interface bonding strength between the glass surface and the low-temperature sealing material is achieved, and the sealing property of the glass sealing part is further ensured.
According to another technical scheme, the composite glass with the aerogel inside comprises a glass sealing body and a vacuum air extractor arranged on the glass sealing body, wherein the glass sealing body is composed of two pieces of glass, a spacing body between the two pieces of glass and an aerogel supporting body arranged in a glass cavity, and the upper surface and the lower surface of the spacing body are connected with the two pieces of glass through low-temperature sealing materials.
On the basis of the above, the vacuum pumping device is located at one corner of the front surface of the glass or one corner of the end part of the spacing body. Therefore, the vacuum air extractor is usually arranged on the front surface of the glass, and can also be arranged on one corner of the end part of the spacing body so as to achieve the purpose of not influencing the mechanical property of the spacing body and the appearance of the glass.
The other technical scheme of the invention is that on the basis, the aerogel support body and the glass are connected through a transparent adhesive.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
Fig. 1 to 8 are sectional views of a composite glass with aerogel embedded therein according to an embodiment of the present invention.
Wherein:
1-glass; 2-an aerogel support; 21-adhesive; 3-a spacer; 4-low temperature sealing material; 41-metal strip; 42-metal mesh; 43-wire; 5-vacuum air-pumping device.
Detailed Description
The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
The embodiment of the invention is as follows, and as shown in figure 1, the preparation method of the composite glass with the aerogel inside comprises the following steps:
(1) disposing the aerogel support 2 on the central surface of the glass 1;
(2) then laying low-temperature sealing materials 4 in corresponding shapes at the sealing positions of the peripheral edges of the glass 1, placing the interval support body 3 on the laid low-temperature sealing materials 4, and then laying the low-temperature sealing materials 4 in corresponding shapes on the interval support body 3;
(3) placing another piece of glass on the pre-assembly obtained in the step (2) in parallel;
(4) heating the combination obtained in the step (3) to a low-temperature sealing material 4 for melting and sealing welding, so that the two pieces of glass 1 and the interval support body 3 are completely sealed, and a glass sealing body containing the aerogel support body 2 is obtained;
(5) the air is evacuated by a vacuum evacuation device 5 and then sealed with a plug.
Thus, through the above steps, an aerogel composite glass can be obtained, which has at least two pieces of glass 1 as a housing, a sealed cavity with at least one vacuum pumping device 5, and an aerogel support body 2 disposed in the cavity, as shown in fig. 1. The energy-saving effect of the aerogel composite glass with the built-in aerogel support body 2 can be comparable to that of vacuum glass, and the transparent aerogel arranged in the aerogel composite glass has excellent heat insulation performance and few gas molecule convection heat phenomena caused by vacuum in the cavity, so that the obtained built-in aerogel composite glass has very excellent heat insulation performance. And the point support replacement that current vacuum glass was supported with glass 1 to built-in aerogel supporter 2 is for the face to support, and the security is higher, in addition, because the aerogel has better anti compressive deformation characteristic, can support effectively because of the compressive stress effect that the vacuum produced in the cavity, avoids the stress concentration phenomenon simultaneously, is the super energy-conserving glass of a safe type. Therefore, the composite glass with the built-in aerogel produced by the preparation method not only has good heat insulation performance, but also has excellent safety performance, and also solves the problems that the aerogel support body is reinforced and edge-sealed by adopting a low-temperature sealing material when the thickness of the aerogel support body exceeds the thickness of the existing vacuum glass support body.
On the basis of the above embodiment, in another embodiment of the present invention, before the manufacturing step of the glass cavity body, the method further includes a pretreatment and a wetting treatment of the surface of the sealing portion of the glass 1, specifically: cleaning the surface of the sealing part of the glass 1 by using an acidic or alkaline solution, and coating a layer of wetting agent on the surface of the sealing part of the glass 1; the wetting agent is one or more of sodium dodecyl sulfate, lauryl sulfate, dialkyl sulfosuccinate, castor oil sulfate, alkyl pyridinium chloride, alkylphenol polyoxyethylene, polyoxyethylene alkyl ether, polyoxyethylene glycol alkyl ester and acetylene glycol. Thus, typically the acidic solution is H2SO4And HNO3The alkaline solution is NaOH or Na2CO3The surface of the sealing part of the glass 1 is firstly cleaned by acid solution or alkaline solution to achieve the purpose of removing oil stains and impurities, so that the next step of wetting treatment is facilitated; and then coating a layer of wetting agent on the surface of the sealing part of the glass 1 after pretreatment to reduce the surface tension of the sealing part of the glass 1 so as to achieve the purpose of increasing the interface bonding strength between the surface of the glass 1 and the low-temperature sealing material 4 and further ensure the sealing property of the sealing part of the glass 1.
In another embodiment of the present invention, the aerogel support 2 is one or more of flat plate, granular, column, and irregular shapes. Wherein, the abnormal shape body is a cylinder and a flat-plate integrated molding structure. Therefore, when the aerogel support body 2 is in a granular shape, the supporting effect can be achieved by densely filling the reliable cavity, when the aerogel support body 2 is in other shapes, the aerogel support body 2 is fully distributed or distributed in the glass cavity in an array mode, and the thickness and the height of the cavity are suitable for achieving the supporting effect, so that the transparent aerogel with super thermal insulation performance and large size is used as the support body in the inner cavity of the aerogel composite glass, multiple modes such as surface support, block support, column support and diversified support are achieved, on one hand, a thermal bridge phenomenon caused by a traditional point support body with a high heat transfer coefficient is avoided, the thermal insulation performance of the aerogel composite glass is further improved, on the other hand, the condition of stress concentration is radically eliminated, and the safety performance of the aerogel composite glass is remarkably improved.
In another embodiment of the present invention, based on the above embodiment, the aerogel support body 2 material further comprises an aerogel support body or an aerogel composite support body with a low-density surface layer and a high-density core. Thus, the thermal conductivity of the aerogel is usually not less than 0.010W/m.k, and the heat transfer coefficient is controlled to the level of the heat transfer coefficient k of the vacuum glass (k value is about 0.5W/m.k)2K), the thickness of the traditional aerogel needs at least 15mm, the aerogel is cooperated with a negative pressure technology, the negative pressure technology and the nano size of the aerogel are implemented to generate a synergistic effect, the convection heat transfer of gas in pores of the aerogel in the cavity is completely blocked, and the heat conductivity coefficient of the aerogel is reduced to be below 0.004W/m.k, so that the thickness of the aerogel is greatly reduced, and the optimized thickness is 1 mm-5 mm. When the aerogel support body is low-density surface layer and high-density core, the aerogel support body with higher internal strength and elastic surface layer can be obtained, the requirement of slight expansion or contraction of a glass cavity caused by the ambient temperature in the use process of the glass can be met, and the excessive stress concentration of the aerogel support body is avoided; when the aerogel support body is the aerogel composite support body, the aerogel support body has good thermal insulation performance, and the compressive strength of the aerogel support body is enhanced.
In another embodiment of the present invention, based on the above embodiment, the aerogel composite support body of the aerogel support body 2 includes one or both of an aerogel/glass composite support body and an aerogel/resin composite support body. So, adopt aerogel and glass or resin composite technology, by light, the transparent aerogel that itself has excellent thermal-insulated heat preservation performance, the performance of making an uproar falls in the sound insulation, the energy-absorbing characteristic is as the functional component, use glass or resin to make the binder phase, the composite support body of aerogel and glass or resin that produces, have the excellent characteristic of aerogel and the good mechanical properties of glass or resin concurrently, both had good thermal-insulated heat preservation performance on the one hand, on the other hand can obtain good security performance and sound insulation again and fall the performance of making an uproar, in addition still has good mechanical properties.
Based on the above embodiments, in another embodiment of the present invention, a method for preparing the aerogel/glass composite support in the aerogel composite support comprises:
(1) mixing materials, namely uniformly mixing glass powder and aerogel;
(2) melting, namely heating the glass powder in the mixture obtained in the step (1) to be melted to obtain semi-solid mixed glass melt;
(3) and (3) molding, namely pouring the mixed glass melt obtained in the step (2) into a mold, and cooling and solidifying.
Thus, through the steps, the aerogel/glass composite support body with heat insulation and preservation performance, which is composed of aerogel and glass bonding phase, can be obtained. The step (2) in the preparation method can be paving, namely placing the mixture obtained in the step (1) in a mould; then, the step (3) is melting, namely heating the glass powder in the mixture to be melted to obtain semi-solid mixed glass melt, and cooling and solidifying; a clarification process is also included after the melting step and before the forming step; the volume ratio of the aerogel to the glass bonding phase is 0.1-9: 1; the aerogel has the characteristics of internal hydrophobicity and surface hydrophilicity; the shape of the aerogel is one of block, particle and powder.
On the basis of the above embodiment, in another embodiment of the present invention, a method for preparing the aerogel/resin composite support body in the aerogel composite support body comprises:
(1) mixing materials, namely uniformly mixing the aerogel and the resin powder;
(2) paving, namely paving a layer of mixture obtained in the step (1) on a mould substrate;
(3) melting, namely rapidly heating the resin powder in the mixture obtained in the step (2) to be molten in a step scanning mode by using a laser;
(4) and (3) alternately spreading and melting, and alternately repeating the step (2) and the step (3) on the previous deposition layer for solidification.
Thus, through the steps of mixing, paving, heating by a laser and the like, the aerogel/resin composite support body with heat insulation and preservation performance, which is composed of aerogel and a resin binder phase, can be obtained. Wherein the alternating spreading and melting steps are performed before the resin in the melting step is cured; the alternating spreading and melting step is carried out after the resin in the melting step is solidified; the volume ratio of the aerogel to the resin powder is 0.1-9: 1; the aerogel has the characteristics of internal hydrophobicity and surface hydrophilicity; the shape of the aerogel is one of block, particle and powder; the resin is a thermosetting resin or a thermoplastic resin.
On the basis of the above embodiment, in another embodiment of the present invention, when the sheet combining step and the sealing step are performed in a vacuum environment, the subsequent vacuum-pumping step may not be performed, and in order to achieve a better effect, the vacuum-pumping step may be performed again.
On the basis of the above embodiment, in another embodiment of the present invention, a transparent adhesive 21 may be disposed between the contact surfaces of the aerogel support 2 and the glass 1. Therefore, the transparent adhesive 21 can be used for fixedly connecting the aerogel support body 2 with the inner surface of the glass 1 so as to play a better supporting role.
On the basis of the above embodiment, in another embodiment of the present invention, the low-temperature sealing material 4 is one of low-temperature glass frit and low-temperature metal edge sealing material. Therefore, the low-temperature sealing material 4 is adopted for sealing, so that the annealing phenomenon of toughened glass or semi-toughened glass caused by overhigh sealing temperature can be avoided, and the physical property of the toughened glass or the semi-toughened glass is reduced; the sealing welding of the glass 1 and the spacing body 3 is realized by carrying out the melt sealing through the low-temperature glass powder or the low-temperature metal edge sealing material, and the requirement of high vacuum degree is met, so that the service life of the built-in aerogel composite glass is effectively prolonged.
On the basis of the above embodiment, in another embodiment of the present invention, the low-temperature metal edge sealing material in the low-temperature sealing material is one of indium, indium alloy, tin, and tin alloy. Thus, the melting point of low temperature metals such as indium, indium alloys, tin alloys, etc. generally does not exceed the annealing temperature of the glass.
On the basis of the above embodiment, in another embodiment of the present invention, one or more of the metal strips 41, the metal meshes 42, or the metal wires 43 are disposed inside the low-temperature sealing material 4. Therefore, by arranging the metal strip 41, the metal mesh 42 or the metal wire 43 inside the sealing edge, on one hand, when the glass to be sealed is heated and sealed, the temperature of the metal strip 41, the metal mesh 42 or the metal wire 43 rises and the low-temperature sealing material 4 is melted, so that the glass is sealed; on the other hand, the metal strips 41, the metal mesh 42 or the metal wires 43 serve as a solid reinforcing phase in the low-temperature sealing material 4 and support between the two glass plates 1.
On the basis of the above embodiment, in another embodiment of the present invention, the spacer 3 is one of a ceramic spacer, a metal spacer and a composite material spacer. In addition, the spacing body can also be a heat-insulating spacing body, wherein the ceramic spacing body mainly comprises a glass spacing body, a traditional ceramic spacing body and the like, the metal spacing body mainly comprises an aluminum spacing body, an aluminum alloy spacing body, a stainless steel spacing body and the like, and the composite spacing body mainly comprises a plastic steel spacing body, an aluminum-plastic spacing body, a composite rubber strip, a glass fiber reinforced composite spacing body and the like. So, because 2 thickness of aerogel supporter are thicker than traditional supporter, if use low temperature sealing material 4 directly to two glass 1 seal, because low temperature sealing material 4 extension is excessive, lead to sealing edge portion gap or hourglass phenomenon to appear, influence vacuum glass's leakproofness, therefore, preset between two glass 1 after the interval body 3 and carry out the melt seal again, can solve the sealing problem that causes because low temperature sealing material 4 extension is excessive on the one hand, on the other hand can also play main supporting role, reduce aerogel supporter 2's stress and excessively concentrate, negative pressure glass's bending resistance has further been improved, compressive strength.
On the basis of the above embodiment, in another embodiment of the present invention, the heating manner of the melt seal is one of laser heating, electron beam heating, and microwave heating. Therefore, the sealing process can be realized by heating the whole glass sealing body to melt the low-temperature sealing material 4, and the glass to be sealed can be locally heated by adopting laser heating, electron beam heating, microwave heating and other modes, so that the metal strip 41, the metal mesh 42 or the metal wire 43 arranged in the low-temperature sealing material 4 are heated by induction and the low-temperature sealing material 4 is melted, and the sealing of the glass is realized.
In another embodiment of the invention, the composite glass with the aerogel inside comprises the glass sealing body and a vacuum air extractor 5 arranged on the glass sealing body, wherein the glass sealing body is composed of two pieces of glass 1, a spacing body 3 arranged between the two pieces of glass 1 and an aerogel supporting body 2 arranged in a glass cavity, and the upper surface and the lower surface of the spacing body 3 are connected with the two pieces of glass 1 through a low-temperature sealing material 4.
On the basis of the above embodiment, in another embodiment of the present invention, the vacuum pumping device 5 is located on one corner of the front surface of the glass or one corner of the end of the spacer. Therefore, the vacuum air extractor is usually arranged on the front surface of the glass, and can also be arranged on one corner of the end part of the spacing body so as to achieve the purpose of not influencing the mechanical property of the spacing body and the appearance of the glass.
On the basis of the above embodiment, in another embodiment of the present invention, the aerogel support and the glass are connected by a transparent adhesive.
On the basis of the above embodiment, in another embodiment of the present invention, the aerogel composite glass is prepared by the following steps:
(1) performing pretreatment and wetting treatment on the surface of the sealing part at the edge of the glass 1, namely cleaning by using an acid solution, and then coating a layer of lubricant;
(2) arranging a tabular aerogel support body 2 on the central surface of the glass 1, wherein the aerogel support body 2 is an aerogel support body 2 with a low surface layer density and a high core density;
(3) then, laying corresponding strip-shaped low-temperature sealing materials 4 at the sealing positions of the peripheral edges of the glass 1 close to the flat-plate aerogel support bodies 2, placing the interval support bodies 3 on the laid low-temperature sealing materials 4, and then laying the corresponding strip-shaped low-temperature sealing materials 4 on the interval support bodies 3;
(4) placing another piece of glass 1 in parallel on the obtained pre-assembly;
(5) heating the obtained assembly to melt and seal the low-temperature sealing material 4 to completely seal the two pieces of glass 1 and the spacing body 3 to obtain a glass sealing body containing the aerogel support body 2;
(6) the glass sealing body is vacuumized, air is extracted through a vacuum air extractor 5 to generate certain negative pressure, and then the glass sealing body is sealed through a plug.
The structural cross-sectional view of the aerogel composite glass built-in obtained through the above steps is shown in fig. 1.
On the basis of the above embodiment, in another embodiment of the present invention, the aerogel composite glass is prepared by the following steps:
(1) the aerogel/glass composite support body is prepared by the following preparation method: (a) uniformly mixing the glass powder with the aerogel; (b) heating the glass powder in the mixture to be molten to obtain semi-solid mixed melt; (c) pouring the obtained mixed solution into a mold of a column body, and cooling and solidifying; (d) annealing to obtain the cylindrical aerogel/glass composite support body;
(2) performing pretreatment and wetting treatment on the surface of the sealing part at the edge of the glass 1, namely cleaning by using an alkaline solution, and then coating a layer of lubricant;
(3) laying transparent adhesives at the bottoms and the tops of the plurality of cylindrical aerogel supports 2, and then arranging and fastening the transparent adhesives on the glass surface in an array manner;
(4) then laying corresponding strip-shaped low-temperature sealing materials 4 at the sealing positions of the peripheral edges of the glass 1, placing the interval support body 3 on the laid low-temperature sealing materials 4, and then laying the corresponding strip-shaped low-temperature sealing materials 4 on the interval support body 3;
(5) placing another piece of glass on the obtained pre-assembly in parallel;
(6) heating the obtained assembly to melt and seal the low-temperature sealing material 4 to completely seal the two pieces of glass 1 and the spacing body 3 to obtain a glass sealing body containing the aerogel support body 2;
(7) the glass sealing body is vacuumized, air is extracted through a vacuum air extractor 5 to generate certain negative pressure, and then the glass sealing body is sealed through a plug.
The structural cross-sectional view of the aerogel composite glass built-in obtained through the above steps is shown in fig. 2.
On the basis of the above embodiment, in another embodiment of the present invention, the aerogel composite glass is prepared by the following steps:
(1) the aerogel/resin composite support body is prepared by the following preparation method: (a) uniformly mixing the aerogel and the resin powder; (b) laying a layer of mixture on the mould substrate; (c) rapidly heating the resin powder in the paved mixture to be molten in a step scanning mode by using a laser; (d) alternately repeating the steps (b) and (c) on the previous deposition layer according to the shape of the input special-shaped aerogel support body, and curing to obtain the special-shaped aerogel/resin composite support body;
(2) performing pretreatment and wetting treatment on the surface of the sealed part at the edge of the glass 1, namely cleaning by using an acid solution, and then coating a layer of lubricant lauryl sulfate;
(3) then filling the special-shaped aerogel support body 2 into the glass cavity;
(4) then laying corresponding strip-shaped low-temperature sealing materials 4 at the sealing positions of the peripheral edges of the glass 1, placing the interval support body 3 on the laid low-temperature sealing materials 4, and then laying the corresponding strip-shaped low-temperature sealing materials 4 on the interval support body 3;
(5) placing another piece of glass on the obtained pre-assembly in parallel;
(6) heating the obtained assembly to melt and seal the low-temperature sealing material 4 to completely seal the two pieces of glass 1 and the spacing body 3 to obtain a glass sealing body containing the aerogel support body 2;
(7) the glass sealing body is vacuumized, air is extracted through a vacuum air extractor 5 to generate certain negative pressure, and then the glass sealing body is sealed through a plug.
The structural cross-sectional view of the aerogel composite glass built-in obtained through the above steps is shown in fig. 3.
On the basis of the above embodiment, in another embodiment of the present invention, the aerogel composite glass is prepared by the following steps:
(1) performing pretreatment and wetting treatment on the surface of the sealed part at the edge of the glass 1, namely cleaning by using an acid solution, and then coating a layer of lubricant castor oil sulfate;
(2) disposing a particulate aerogel support 2 on the central surface of the glass 1;
(3) then laying low-temperature glass powder 4 with corresponding shapes at the sealing position of the peripheral edge of the glass 1, placing a ceramic interval support body 3 on the laid low-temperature sealing material 4, and then laying the low-temperature glass powder 4 with corresponding shapes on the ceramic interval support body 3;
(4) placing another piece of glass 1 in parallel on the obtained pre-assembly in a vacuum environment;
(5) and in a vacuum environment, the obtained assembly is integrally heated to a low-temperature sealing material 4 for melting and sealing welding, so that the two pieces of glass 1 and the ceramic interval support body 3 are completely sealed, and the glass sealing body containing the aerogel support body 2 is obtained.
The structural cross-sectional view of the aerogel composite glass built-in obtained through the above steps is shown in fig. 4.
On the basis of the above embodiment, in another embodiment of the present invention, the aerogel composite glass is prepared by the following steps:
(1) performing pretreatment and wetting treatment on the surface of the sealed part at the edge of the glass 1, namely cleaning by using an alkaline solution, and then coating a layer of lubricant alkyl pyridinium chloride;
(2) disposing a tabular aerogel support 2 on the central surface of the glass 1;
(3) then laying low-temperature metal indium 4 with a corresponding shape at the sealing position of the peripheral edge of the glass 1 close to the flat aerogel support body 2, placing the metal interval support body 3 on the laid low-temperature metal indium 4, and laying the low-temperature metal indium 4 with the corresponding shape on the metal interval support body 3, wherein the metal strip 41 is embedded in the low-temperature metal indium 4 in advance;
(4) placing another piece of glass 1 in parallel on the obtained pre-assembly in a vacuum environment;
(5) and in a vacuum environment, the obtained assembly is integrally heated to low-temperature metal indium 4 for fusion sealing welding, so that the two pieces of glass 1 and the metal interval supporting body 3 are completely sealed, and the glass sealing body containing the aerogel supporting body 2 is obtained.
The structural cross-sectional view of the aerogel composite glass built-in obtained through the above steps is shown in fig. 5.
On the basis of the above embodiment, in another embodiment of the present invention, the aerogel composite glass is prepared by the following steps:
(1) performing pretreatment and wetting treatment on the surface of the sealed part at the edge of the glass 1, namely cleaning by using an acidic solution, and then coating a layer of alkylphenol polyethenoxy ether serving as a lubricant;
(2) laying transparent adhesives at the bottom and the top of a cylindrical aerogel support body 2, and arranging and fastening the transparent adhesives on the surface of glass in an array manner, wherein the cylindrical aerogel support body is an aerogel support body with a low-density surface layer and a high-density core part;
(3) then laying low-temperature metal indium alloy 4 with a corresponding shape at the sealing position of the peripheral edge of the glass 1 close to the flat aerogel support body 2, placing the composite material interval support body 3 on the laid low-temperature metal indium alloy 4, and laying the low-temperature metal indium alloy 4 with the corresponding shape on the composite material interval support body 3, wherein a metal mesh 42 is pre-embedded in the low-temperature metal indium alloy 4;
(4) placing another piece of glass 1 in parallel on the obtained pre-assembly in a vacuum environment;
(5) in a vacuum environment, the obtained assembly is integrally heated to a low-temperature metal indium alloy 4 for melting and sealing welding, so that the two pieces of glass 1 and the composite material interval support body 3 are completely sealed, and a glass sealing body containing the aerogel support body 2 is obtained;
(6) the glass sealing body is vacuumized, air is extracted through a vacuum air extractor 5 to generate certain negative pressure, and then the glass sealing body is sealed through a plug.
The structural cross-sectional view of the aerogel composite glass built-in obtained through the above steps is shown in fig. 6.
On the basis of the above embodiment, in another embodiment of the present invention, the aerogel composite glass is prepared by the following steps:
(1) performing pretreatment and wetting treatment on the surface of the sealed part at the edge of the glass 1, namely cleaning by using an alkaline solution, and then coating a layer of lubricant polyoxyethylene alkyl ether;
(2) transparent adhesives are laid at the bottom and the top of the special-shaped aerogel support body 2;
(3) then laying low-temperature metal tin 4 with a corresponding shape at the sealing position of the peripheral edge of the glass 1 close to the special-shaped aerogel support body 2, placing the composite material interval support body 3 on the laid low-temperature metal tin 4, and laying the low-temperature metal tin 4 with the corresponding shape on the composite material interval support body 3, wherein a plurality of metal wires 43 arranged in parallel are pre-embedded in the low-temperature metal tin 4;
(4) placing another piece of glass 1 in parallel on the obtained pre-assembly;
(5) the obtained assembly is wholly heated by laser, electron beam or microwave until the low-temperature metal tin 4 is melted and sealed, so that the two pieces of glass 1 and the composite material interval support body 3 are completely sealed, and a glass sealing body containing the aerogel support body 2 is obtained;
(6) the glass sealing body is vacuumized, air is extracted through a vacuum air extractor 5 to generate certain negative pressure, and then the glass sealing body is sealed through a plug.
The structural cross-sectional view of the aerogel composite glass built-in obtained through the above steps is shown in fig. 7.
In another embodiment of the invention, the composite glass with the aerogel inside comprises the glass sealing body and a vacuum air extractor 5 arranged on the glass sealing body, wherein the glass sealing body consists of two pieces of glass 1, a spacing body 3 between the two pieces of glass 1 and an aerogel supporting body 2 arranged in a glass cavity, and the upper surface and the lower surface of the spacing body 3 are connected with the two pieces of glass 1 through a low-temperature sealing material 4; wherein the vacuum suction device 5 is positioned on one corner of the front surface of the glass 1 or one corner of the end of the spacing body 3, as shown in fig. 1 and 8.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. The preparation method of the composite glass with the aerogel inside is characterized by comprising the following steps of:
(1) preparing an aerogel-glass composite support: a, mixing materials, namely uniformly mixing glass powder and aerogel; b, melting, namely heating the glass powder in the mixture obtained in the step a to be melted to obtain semi-solid mixed glass melt; c, molding, namely pouring the mixed glass melt obtained in the step b into a mold, and cooling and solidifying;
(2) preparing an aerogel-resin composite support body: i, mixing materials, namely uniformly mixing aerogel and resin powder; ii, paving a layer of the mixture obtained in the step i on a mould substrate; iii, melting, namely rapidly heating the resin powder in the mixture obtained in the step ii to be molten by using a laser in a step scanning manner; iv alternately spreading and melting, and alternately repeating steps ii and iii on the previous deposition layer, and solidifying;
(3) the pretreatment and the wetting treatment of the surface of the glass sealing part specifically comprise the following steps: cleaning the surface of a glass sealing part by using an acidic or alkaline solution, and coating a layer of wetting agent on the surface of the glass sealing part, wherein the wetting agent is one or more of sodium dodecyl sulfate, lauryl sulfate, dialkyl sulfosuccinate, castor oil sulfate, alkyl pyridinium chloride, alkylphenol ethoxylates, polyoxyethylene alkyl ether, polyoxyethylene glycol alkyl ester and acetylene glycol;
(4) laying a support, disposing an aerogel support on the glass; wherein the aerogel support body also comprises an aerogel composite support body with a low-density surface layer and a high-density core part, and the aerogel composite support body comprises the aerogel-glass composite support body and the aerogel-resin composite support body prepared in the steps (1) and (2);
(5) laying a low-temperature sealing material, laying the low-temperature sealing material at the sealing position of the peripheral edge of the glass, placing the spacer on the laid low-temperature sealing material, and laying the low-temperature sealing material on the spacer;
(6) laminating, namely placing another piece of glass on the pre-assembly obtained in the step (5);
(7) sealing by fusing, namely heating the pre-assembly obtained in the step (6) to a low-temperature sealing material for fusing and sealing to obtain a glass sealing body containing the aerogel support body;
(8) and (4) vacuumizing, and exhausting the glass sealing body through a vacuum air exhaust device.
2. The method for preparing the composite glass with the built-in aerogel according to claim 1, wherein the aerogel support body is in the shape of more than one of a flat plate, a particle, a column and a special shape.
3. The method for preparing the aerogel composite glass with an internal structure as claimed in claim 1, wherein the steps (6) and (7) are performed in a vacuum environment, and then the step of evacuating step (8) or the step of evacuating step (8) is not performed.
4. The method for preparing the composite glass with the built-in aerogel according to claim 1, wherein a transparent adhesive is arranged between the contact surfaces of the aerogel support and the glass.
5. The method for preparing the composite glass with the built-in aerogel according to claim 1, wherein the low-temperature sealing material is low-temperature glass powder or a low-temperature metal edge sealing material, and the low-temperature metal edge sealing material is one of indium, indium alloy, tin and tin alloy; the heating mode of the melt seal is one of laser heating, electron beam heating and microwave heating; the spacer is one of a ceramic spacer, a metal spacer and a composite spacer.
6. The method for preparing the composite glass with the built-in aerogel according to claim 1, wherein one or more of metal strips, metal nets or metal wires are arranged inside the low-temperature sealing material.
CN201710161775.0A 2017-03-17 2017-03-17 Composite glass with built-in aerogel and preparation method thereof Active CN108625740B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710161775.0A CN108625740B (en) 2017-03-17 2017-03-17 Composite glass with built-in aerogel and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710161775.0A CN108625740B (en) 2017-03-17 2017-03-17 Composite glass with built-in aerogel and preparation method thereof

Publications (2)

Publication Number Publication Date
CN108625740A CN108625740A (en) 2018-10-09
CN108625740B true CN108625740B (en) 2020-04-10

Family

ID=63687384

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710161775.0A Active CN108625740B (en) 2017-03-17 2017-03-17 Composite glass with built-in aerogel and preparation method thereof

Country Status (1)

Country Link
CN (1) CN108625740B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110219417B (en) * 2019-05-05 2021-02-12 江苏建筑职业技术学院 High-cohesiveness steel rib and production process thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0552484A2 (en) * 1992-01-20 1993-07-28 BASF Aktiengesellschaft Formed pieces or plates from silica-aerogel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101010187A (en) * 2004-06-29 2007-08-01 思攀气凝胶公司 Energy efficient and insulated building envelopes
CN103382079B (en) * 2013-06-27 2015-10-14 中国建筑材料科学研究总院 The method for sealing of toughened vacuum glass, preparation method and toughened vacuum glass
CN104973807A (en) * 2014-04-11 2015-10-14 青岛鑫泰青玻璃有限公司 Tempered vacuum glass and production method thereof
CN106032310A (en) * 2014-10-27 2016-10-19 金承黎 Vacuum glass and manufacturing method thereof
CN104496159A (en) * 2014-12-19 2015-04-08 洛阳兰迪玻璃机器股份有限公司 Edge-sealing method of vacuum glass and vacuum glass product
CN104478202A (en) * 2014-12-19 2015-04-01 洛阳兰迪玻璃机器股份有限公司 Vacuum glass sealing method and vacuum glass product
CN105041142B (en) * 2015-09-06 2018-01-02 长沙星纳气凝胶有限公司 A kind of preparation method of aerogel thermal insulation glass

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0552484A2 (en) * 1992-01-20 1993-07-28 BASF Aktiengesellschaft Formed pieces or plates from silica-aerogel

Also Published As

Publication number Publication date
CN108625740A (en) 2018-10-09

Similar Documents

Publication Publication Date Title
WO2013139281A1 (en) Low pressure air or vacuum glass edge-sealed with bar frame and groove
EP3575273A1 (en) Vacuum glass and preparation process therefor
CN102951820A (en) Vacuum glass and preparation method thereof
WO2015066957A1 (en) Method for manufacturing tempered vacuumed glass
CN108623194B (en) Composite glass with built-in aerogel and preparation method thereof
CN108625740B (en) Composite glass with built-in aerogel and preparation method thereof
CN108625737B (en) Composite glass with built-in aerogel and preparation method thereof
CN207761521U (en) A kind of hollow glass that stability is strong
CN108625741B (en) Composite glass with built-in aerogel and preparation method thereof
CN108625742B (en) Composite glass with built-in aerogel and preparation method thereof
CN206581822U (en) A kind of built-in aerogel composite glass
CN104746664A (en) Glass welded double-vacuum-layer metal composite vacuum plate and production method thereof
CN206581820U (en) A kind of built-in aerogel composite glass
CN108625743B (en) Hollow glass with built-in sun-shading device
CN108621505B (en) Energy-saving glass with aerogel composite board inside and preparation method thereof
CN104746752A (en) Metal vacuum composite heat-insulation plate with edge sealed by seal strip and manufacturing method thereof
CN111302657A (en) Glass, stainless steel frame and metal brazing isolation interlayer vacuum heat-insulation glass plate
DE102008034842A1 (en) Heat-insulating molded padding for solar collector, has supporting body with glass casing, where glass casing has glass element provided on supporting body
CN112777953A (en) Manufacturing method and production line of tempered vacuum glass
CN111302661A (en) Rolling support metal brazing interlayer regulation and control vacuum insulation glass plate with protective frame
CN206053207U (en) A kind of solar energy heating composite heat insulation plate structure
CN206337995U (en) A kind of shellproof double glazing of energy-saving fire proof
CN111302656B (en) Glass and stainless steel frame and stretching support frame metal brazing sandwich vacuum glass
CN111305715B (en) Metal brazing sandwich hollow heat-insulating glass plate with protective frame rolling support
CN104746711A (en) Double-vacuum-layer glass composite vacuum plate with edge sealed by seal strip and manufacturing method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant