Hollow glass and preparation method thereof

Abstract

The invention relates to the technical field of glass preparation, and provides hollow glass and a preparation method thereof.The hollow glass comprises first laminated glass and second laminated glass, a hollow layer is formed between the first laminated glass and the second laminated glass, and the first laminated glass comprises first glass, a first film and second glass; the first laminated glass comprises first glass, second glass and a first film, the first film is clamped between the first glass and the second glass, the second laminated glass comprises third glass, a second film and fourth glass, the second film is clamped between the third glass and the fourth glass, and heating wires are arranged on the first film and / or the second film. The heating wire in the hollow glass can be electrified for heating, so that the surface of the glass is prevented from being dewed or frosted, and the definition and transparency of the glass are ensured; meanwhile, the heating wire can also provide an electromagnetic shielding function to protect the interior of the glass curtain wall from external electromagnetic interference.

Description

Technical Field

[0001] The present application relates to the technical field of glass preparation, and in particular to a hollow glass and a preparation method thereof. Background Art

[0002] As a new type of energy-saving building material, insulating glass is widely used because of its advantages of heat insulation, sound insulation, energy saving, safety, etc. However, during use, when the ambient temperature drops to the point where the temperature of the outer surface of the glass drops to the dew point of the air, condensation or frost will form on the outer surface of the glass, reducing the transparency and clarity of the glass. However, existing insulating glass cannot handle condensation or frost in a short time, affecting normal use. Summary of the invention

[0003] In view of this, an embodiment of the present application provides a hollow glass and a preparation method thereof to solve the problem that the existing hollow glass cannot handle condensation or frosting in a short time.

[0004] A first aspect of the present application proposes a hollow glass, comprising a first laminated glass and a second laminated glass, wherein a hollow layer is formed between the first laminated glass and the second laminated glass, the first laminated glass comprising a first glass, a first film, and a second glass, the first film being sandwiched between the first glass and the second glass, the second laminated glass comprising a third glass, a second film, and a fourth glass, the second film being sandwiched between the third glass and the fourth glass, and a heating wire being provided on the first film and / or the second film.

[0005] The beneficial effects of the hollow glass provided by the embodiments of the present application are as follows: the film tightly bonds the two adjacent layers of glass together to form a solid sandwich structure. Even if the glass is broken by impact, the fragments will adhere to the film, reducing safety hazards. In addition, the film has a good sound insulation effect and can reduce the impact of external noise on the indoor environment; the film also has a heat insulation effect and enhances the thermal insulation performance of the overall glass curtain wall. The first film and / or the second film provided with a heating wire can be electrically heated on the basis of having the above-mentioned properties to prevent condensation or frost on the glass surface and ensure the clarity and transparency of the glass; at the same time, the heating wire can also provide an electromagnetic shielding function to protect the interior of the glass curtain wall from external electromagnetic interference.

[0006] In some embodiments, the first glass is electrochromic glass, and / or the second glass is triple-silver coated glass.

[0007] The beneficial effects of adopting the above technical solution are as follows: electrochromic glass can adjust the light transmittance according to the light conditions and effectively manage sunlight and glare. For example, in winter, it can reduce the energy exchange between indoor and outdoor, reducing heating costs; in summer, it can reduce the solar radiation heat entering the room and reduce the burden of air conditioning. Moreover, electrochromic glass can switch between different light transmission states to provide privacy protection for the interior of the glass curtain wall. Triple silver coated glass has excellent heat insulation and thermal insulation properties, which can significantly reduce energy loss; its coating can reflect most of the sun's heat and keep the indoor temperature stable; and its high thermal insulation performance does not rely on the electrochromic layer, and can continue to provide energy-saving effects even in power outages, extending the service life of the glass curtain wall.

[0008] In some embodiments, the third glass and / or the fourth glass is ultra-clear glass.

[0009] The beneficial effects of adopting the above technical solution are as follows: ultra-clear glass has extremely high transparency, can restore the most realistic colors, and provide a brighter and more transparent visual effect for the interior; moreover, compared with ordinary glass, ultra-clear glass is stronger and less prone to breakage, which improves the durability of the curtain wall.

[0010] In some embodiments, the hollow layer includes a spacer bar and a hollow cavity, the hollow cavity is surrounded by the second glass, the third glass and the spacer bar, and the hollow cavity is filled with an inert gas.

[0011] The beneficial effects of adopting the above technical solution are as follows: the thermal conductivity of inert gas is lower than that of air. Therefore, the hollow cavity filled with inert gas has better thermal insulation performance and can effectively prevent condensation caused by the temperature difference between the inside and the outside. At the same time, the hollow cavity filled with inert gas also enhances the sound insulation effect and the wind pressure resistance of the overall structure.

[0012] In some embodiments, the diameter of the heating wire is 0.2-0.5 mm.

[0013] The beneficial effect of adopting the above technical solution is: under the condition of ensuring the heating effect, the heating wire is not easily observed by the naked eye, thereby ensuring the aesthetics of the glass curtain wall.

[0014] The second aspect of the present application provides a method for preparing the insulating glass as described in the first aspect, comprising:

[0015] Providing a first laminated glass and a second laminated glass, and arranging a heating wire on a first film of the first laminated glass and / or a second film of the second laminated glass;

[0016] A spacer is placed between the first laminated glass and the second laminated glass to obtain a hollow layer.

[0017] In some embodiments, the preparation method of the first laminated glass is as follows:

[0018] The first film is sandwiched between the electrochromic glass and the triple-silver coated glass, and then the combined structure is placed in a vacuum heating device;

[0019] First chamber: temperature 140-150℃, vacuum pressure 5-10Kpa, outlet temperature 70-80℃;

[0020] Second chamber: temperature 170-180℃, vacuum pressure 0-5Kpa, outlet temperature 100-110℃;

[0021] The third chamber: continue heating and curing, the temperature is 180-200℃, and the exit temperature is 120-140℃;

[0022] The fourth chamber: vacuum pressure 10-20Kpa, cooling and shaping.

[0023] In some embodiments, the process flow of the first chamber and the second chamber is the same, and each chamber includes pre-vacuuming for 8-12 seconds, upper and lower vacuuming for 600-650 seconds, lower vacuuming for 150-180 seconds, and deflation and heat preservation for 60 seconds.

[0024] In some embodiments, the preparation method of the second laminated glass is as follows:

[0025] The second film provided with the heating wire is sandwiched between two ultra-clear glasses, and then the combined structure is placed in a vacuum heating device;

[0026] First chamber: temperature 130-140℃, vacuum pressure 5-10Kpa, outlet temperature 70-80℃;

[0027] Second chamber: temperature 140-160℃, vacuum pressure 0-5Kpa, outlet temperature 90-100℃;

[0028] The third chamber: continue heating and curing, the temperature is 160-180℃, and the exit temperature is 115-135℃;

[0029] The fourth chamber: vacuum pressure 10-20Kpa, cooling and shaping.

[0030] In some embodiments, the process flow of the first chamber and the second chamber is the same, and each chamber includes pre-vacuuming for 8-12 seconds, upper and lower vacuuming for 500-550 seconds, lower vacuuming for 160-200 seconds, and deflation and heat preservation for 60 seconds.

[0031] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or conventional technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 is a schematic diagram of the structure of insulating glass provided in some embodiments of the present application;

[0034] Figure 2 is a schematic diagram of the arrangement of heating wires provided in some embodiments of the present application;

[0035] Figure 3 This is a flow chart of a method for preparing hollow glass provided in some embodiments of the present application.

[0036] The meanings of the marks in the figure are:

[0037] 10. Insulating glass;

[0038] 11. first laminated glass; 111. first glass; 112. first film; 113. second glass;

[0039] 12, second laminated glass; 121, third glass; 122, second film; 123, fourth glass;

[0040] 13. hollow layer; 131. sealant; 132. spacer strip; 133. hollow cavity;

[0041] 14. Heating wire;

[0042] 15. Positive lead wire;

[0043] 16. Negative lead wire. DETAILED DESCRIPTION

[0044] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0046] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0047] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0048] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0049] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0050] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0051] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0052] The insulating glass of the Ice and Snow World glass curtain wall not only provides excellent energy saving, sound insulation and safety performance, but also ensures a high degree of transparency and aesthetics. These features together ensure the comfort and safety of the indoor environment of the Ice and Snow World, and meet the dual needs of architectural aesthetics and functionality. However, during use, when the ambient temperature drops to the point where the temperature of the outer surface of the glass drops to the dew point of the air, condensation or frost will form on the outer surface of the glass, reducing the transparency and clarity of the glass.

[0053] However, existing insulating glass cannot handle condensation or frosting in a short period of time, affecting normal use.

[0054] In order to solve the problem that the existing insulating glass cannot handle condensation or frosting in a short time, the present application designs an insulating glass and a manufacturing method thereof.

[0055] The first embodiment of the present application provides a hollow glass. Figure 1 and Figure 2 The insulating glass 10 includes a first laminated glass 11 and a second laminated glass 12, a hollow layer 13 is formed between the first laminated glass 11 and the second laminated glass 12, the first laminated glass 11 includes a first glass 111, a first film 112 and a second glass 113, the first film 112 is sandwiched between the first glass 111 and the second glass 113, the second laminated glass 12 includes a third glass 121, a second film 122 and a fourth glass 123, the second film 122 is sandwiched between the third glass 121 and the fourth glass 123, and a heating wire 14 is provided on the first film 112 and / or the second film 122.

[0056] Optionally, the first laminated glass 11 is outdoor glass, that is, the side of the first glass 111 of the first laminated glass 11 facing away from the second glass 113 faces outdoors; the second laminated glass 12 is indoor glass, that is, the side of the fourth glass 123 of the second laminated glass 12 facing away from the third glass 121 faces indoors. It can be understood that the insulating glass 10 is a double-laminated insulating glass.

[0057] Optionally, the hollow layer 13 includes a sealant 131, a spacer bar 132 and a hollow cavity 133, wherein the spacer bar 132 is a frame-shaped structure, that is, the spacer bar 132, the first laminated glass 11 and the second laminated glass 12 form a hollow cavity 133. In the thickness direction perpendicular to the first glass 111, opposite sides of the spacer bar 132 are respectively bonded and fixedly connected to the first laminated glass 11 and the second laminated glass 12 by adhesive.

[0058] The sealant 131 is arranged on the outside of the spacer bar 132 to ensure the sealing of the hollow cavity 133 , and can also play the role of bonding the first laminated glass 11 and the second laminated glass 12 to ensure the stability of the fixed connection between the first laminated glass 11 and the second laminated glass 12 .

[0059] Among them, the first film 112 is sandwiched between the first glass 111 and the second glass 113. It can be understood that the first film 112 tightly bonds the first glass 111 and the second glass 113 together to form a strong sandwich structure. Even if the first laminated glass 11 is broken by impact, the glass fragments will adhere to the first film 112, reducing safety hazards.

[0060] Among them, the second film 122 is sandwiched between the third glass 121 and the fourth glass 123. It can be understood that the second film 122 tightly bonds the third glass 121 and the fourth glass 123 together to form a strong sandwich structure. Even if the second laminated glass 12 is broken by impact, the glass fragments will adhere to the second film 122, reducing safety hazards.

[0061] Optionally, the first film 112 is a PVB film, and / or the second film 122 is a PVB film. PVB film has good sound insulation effect, which can reduce the impact of external noise on the indoor environment; at the same time, PVB film also has heat insulation effect, which enhances the thermal insulation performance of the glass curtain wall.

[0062] The thickness of the PVB film may be 1.1-1.2 mm, for example, the thickness of the PVB film is 1.14 mm.

[0063] It is understood that the heating wire 14 may be disposed on the first film 112, or the heating wire 14 may be disposed on the second film 122, or the heating wire 14 may be disposed on both the first film 112 and the second film 122. Optionally, the heating wire 14 is a tungsten wire.

[0064] It can be understood that one or more heating wires 14 can be provided. When one heating wire 14 is provided, the heating wire 14 is arranged in an S shape on the corresponding film, and the first end and the second end of the heating wire 14 are respectively connected to the positive lead wire 15 and the negative lead wire 16. When multiple heating wires 14 are provided, the multiple heating wires 14 can be arranged in parallel or nearly in parallel, the first ends of the multiple heating wires 14 are connected to the positive lead wire 15, and the second ends of the multiple heating wires 14 are connected to the negative lead wire 16. Of course, when multiple heating wires 14 are provided, at least one heating wire 14 can be arranged in an S shape, and at least two heating wires 14 can be arranged in parallel or nearly in parallel.

[0065] Among them, the width of the positive lead wire 15 and the negative lead wire 16 is relatively large to meet the power supply to the multiple heating wires 14. It should be noted that the positive lead wire 15 and the negative lead wire 16 are at the edge of the glass, that is, after the insulating glass 10 is installed, the positive lead wire 15 and the negative lead wire 16 will be blocked, so even if the width of the positive lead wire 15 and the negative lead wire 16 is large, the user cannot observe it.

[0066] The insulating glass 10 provided in the embodiment of the present application has the beneficial effects as follows: the film tightly bonds two adjacent layers of glass together to form a solid sandwich structure. Even if the glass is broken by impact, the fragments will adhere to the film, reducing safety hazards. Moreover, the film has a good sound insulation effect and can reduce the impact of external noise on the indoor environment; the film also has a heat insulation effect and enhances the thermal insulation performance of the overall glass curtain wall. The first film 112 and / or the second film 122 provided with the heating wire 14 have the above-mentioned properties. The heating wire 14 can be electrically heated to prevent condensation or frost on the glass surface and ensure the clarity and transparency of the glass; at the same time, the heating wire 14 can also provide an electromagnetic shielding function to protect the interior of the glass curtain wall from external electromagnetic interference.

[0067] In some embodiments, the first glass 111 is electrochromic glass, and the second glass 113 is triple-silver coated glass.

[0068] Optionally, the electrochromic glass is an inorganic all-solid-state electrochromic glass. The inorganic all-solid-state electrochromic glass is capable of infinitely adjusting the visible light transmittance between 60% and 1% under the action of a 3V DC voltage. This means that the light transmittance of the glass can be adjusted automatically or manually according to different lighting conditions, thereby effectively managing sunlight and glare. For example, in winter, it can reduce indoor and outdoor energy exchange and reduce heating costs; in summer, it can reduce solar radiation heat entering the room and reduce the burden on indoor air conditioning. Moreover, the electrochromic glass can switch between different light transmittance states to provide privacy protection for the interior of the glass curtain wall.

[0069] Optionally, the side of the triple-silver coated glass facing the hollow layer 13 is a triple-silver film layer.

[0070] Triple-silver coated glass has excellent thermal insulation and heat preservation properties, which can significantly reduce energy loss; its coating can reflect most of the sun's heat, keep the indoor temperature stable, and further reduce the burden of indoor air conditioning; and its high thermal insulation performance does not rely on the electrochromic layer, and can continue to provide energy-saving effects even in power outages.

[0071] Therefore, the combination of electrochromic glass and triple-silver coated glass enables the overall glass curtain wall to maintain excellent energy-saving performance in different seasons and weather conditions.

[0072] The first glass 111 and the second glass 113 have the same thickness. For example, the first glass 111 and the second glass 113 have a thickness of 8 mm.

[0073] In other embodiments, the first glass 111 may be an electrochromic glass, and the second glass 113 may be single-silver-coated glass, double-silver-coated glass, ultra-clear glass, or ordinary tempered glass; or, the first glass 111 may be ultra-clear glass or ordinary tempered glass, and the second glass 113 may be triple-silver-coated glass; or, the first glass 111 and the second glass 113 may both be ultra-clear glass or ordinary tempered glass; or, the first glass 111 may be triple-silver-coated glass, and the second glass 113 may be an electrochromic glass.

[0074] In some embodiments, the third glass 121 and the fourth glass 123 are both ultra-clear glass.

[0075] Optionally, the third glass 121 and the fourth glass 123 have the same thickness. For example, the thickness of the third glass 121 and the fourth glass 123 are both 8 mm.

[0076] Ultra-clear glass has extremely high transparency and can restore the most realistic colors, providing a brighter and more transparent visual effect indoors. Moreover, compared with ordinary glass, ultra-clear glass is stronger and less prone to breakage, which improves the durability of the curtain wall. At the same time, the third glass 121 and the fourth glass 123 are both ultra-clear glass, which can further improve the structural strength and ensure safety.

[0077] Optionally, the thicknesses of the first glass 111, the second glass 113, the third glass 121 and the fourth glass 123 are all the same, that is, the first laminated glass 11 and the second laminated glass 12 are symmetrically designed with the hollow layer 13 to ensure the overall stability of the glass curtain wall and avoid deformation or damage of the glass curtain wall due to differences in thermal expansion coefficients of different materials.

[0078] In other embodiments, the third glass 121 may be ultra-clear glass, and the fourth glass 123 may be ordinary glass; or, the third glass 121 may be ordinary glass, and the fourth glass 123 may be ultra-clear glass; or, the third glass 121 and the fourth glass 123 may both be ordinary glass.

[0079] In some embodiments, the hollow layer 13 includes a spacer bar 132 and a hollow cavity 133 . The hollow cavity 133 is surrounded by the second glass 113 , the third glass 121 , and the spacer bar 132 . The hollow cavity 133 is filled with an inert gas.

[0080] Optionally, the spacer bar 132 is a thermoplastic reactive spacer bar (4SG). Of course, the spacer bar 132 can also be a metal spacer bar, such as an aluminum spacer bar, a stainless steel spacer bar, etc.

[0081] Optionally, the inert gas is argon, krypton, etc.

[0082] The thermal conductivity of inert gas is lower than that of air. Therefore, the hollow cavity 133 filled with inert gas has better thermal insulation performance and can effectively prevent condensation caused by the temperature difference between the inside and the outside. At the same time, the hollow cavity 133 filled with inert gas also enhances the sound insulation effect and the wind pressure resistance of the overall structure.

[0083] In some embodiments, the diameter of the heating wire 14 is 0.2-0.5 mm.

[0084] It can be understood that the diameter of the heating wire 14 can be 0.2 mm, 0.3 mm, 0.4 mm or 0.5 mm, etc.

[0085] Optionally, the density of the heating wire 14 is in the range of 30-100 g / m 2 .

[0086] Based on the above solution, the heating wire 14 is not easily observed by naked eyes while ensuring the heating effect, thereby ensuring the aesthetics of the glass curtain wall.

[0087] In other embodiments, the diameter of the heating wire 14 may be less than 0.2 mm or greater than 0.5 mm while meeting the requirements of defrosting and dew removal.

[0088] Please also refer to Figures 1 to 3 The second aspect of the present application provides a method for preparing the insulating glass 10 as described in the first aspect, comprising:

[0089] S1. Provide a first laminated glass 11 and a second laminated glass 12 , and arrange a heating wire 14 on a first film 112 of the first laminated glass 11 and / or a second film 122 of the second laminated glass 12 .

[0090] Optionally, a heating wire 14 is provided on the second film 122 of the second laminated glass 12. Of course, a heating wire 14 can also be provided on the first film 112 of the first laminated glass 11, or a heating wire 14 can be provided on both the first film 112 of the first laminated glass 11 and the second film 122 of the second laminated glass 12.

[0091] It can be understood that when only one heating wire 14 is provided, the heating wire 14 is arranged in an S shape on the corresponding film. When multiple heating wires 14 are provided, the multiple heating wires 14 can be arranged in parallel or nearly in parallel; or at least one heating wire 14 can be arranged in an S shape, and at least two heating wires 14 can be arranged in parallel or nearly in parallel.

[0092] S2. Place a spacer bar 132 between the first laminated glass 11 and the second laminated glass 12 to obtain a hollow layer 13.

[0093] The spacer bar 132 is a frame-shaped structure; in a thickness direction perpendicular to the first glass 111 , opposite sides of the spacer bar 132 are bonded and fixedly connected to the first laminated glass 11 and the second laminated glass 12 by adhesive.

[0094] Optionally, a sealant 131 is provided on the outer side of the spacer bar 132 to ensure the sealing of the hollow cavity 133 and also to bond the first laminated glass 11 and the second laminated glass 12 to ensure the stability of the fixed connection between the first laminated glass 11 and the second laminated glass 12.

[0095] In some embodiments, the preparation method of the first laminated glass 11 is as follows:

[0096] First, the electrochromic glass (first glass 111) and the triple-silver coated glass (second glass 113) are cleaned, and then the first film 112 is sandwiched between the electrochromic glass and the triple-silver coated glass, and then the combined structure is placed in a vacuum heating device. The air between the electrochromic glass and the first film 112 and between the triple-silver coated glass and the first film 112 is exhausted by negative pressure, so that the three are tightly fitted; in a vacuum state, the equipment heats the first laminated glass 11, and the first film 112 softens during the heating process, and further exhausts air and bubbles to firmly bond with the glass surface; after heating, the first laminated glass 11 needs to be cooled for a period of time to completely solidify the first film 112 to form a uniform and transparent first laminated glass 11. Among them, the vacuum heating equipment is a non-autoclave equipment.

[0097] The specific process of the first laminated glass 11 in the vacuum heating equipment is as follows:

[0098] First chamber: temperature 140-150℃, vacuum pressure 5-10Kpa, outlet temperature 70-80℃;

[0099] Second chamber: temperature 170-180℃, vacuum pressure 0-5Kpa, outlet temperature 100-110℃;

[0100] The third chamber: continue heating and curing, the temperature is 180-200℃, no vacuum, the temperature out of the chamber is 120-140℃;

[0101] The fourth chamber: vacuum pressure 10-20Kpa, cooling and shaping; due to high temperature cooling too fast, the edge of the glass is deformed and bubbles are easily generated. Vacuuming at this stage can reduce or avoid the generation of bubbles.

[0102] The process flow of the first chamber and the second chamber is the same, and each chamber includes pre-vacuuming for 8-12s, vacuuming the upper and lower chambers for 600-650s, vacuuming the lower chamber for 150-180s, and deflation and heat preservation for 60s.

[0103] The first chamber and the second chamber exhaust the air between the first film 112 and the glass through negative pressure, and heat and cure the first film 112.

[0104] When the vacuum is drawn downward, the vacuum valve at the top of the chamber is closed, and the upper rubber plate presses the glass downward under the suction force from the bottom.

[0105] In some embodiments, the preparation method of the second laminated glass 12 is as follows:

[0106] First, clean and dry the two sheets of ultra-clear glass, then set the heating wire 14 on the second film 122, and sandwich the second film 122 with the heating wire 14 between the two sheets of ultra-clear glass, and then put the combined structure into a vacuum heating device. The air between the second film 122 and the two sheets of ultra-clear glass is discharged by negative pressure, so that the three are tightly fitted; in a vacuum state, the equipment heats the second laminated glass 12, and the second film 122 softens during the heating process, and further discharges air and bubbles to firmly bond with the glass surface; after heating, the second laminated glass 12 needs to be cooled for a period of time to completely solidify the second film 122 to form a uniform and transparent second laminated glass 12. Among them, the vacuum heating equipment is a non-autoclave equipment.

[0107] The specific process of the second laminated glass 12 in the vacuum heating equipment is as follows:

[0108] First chamber: temperature 130-140℃, vacuum pressure 5-10Kpa, outlet temperature 70-80℃;

[0109] Second chamber: temperature 140-160℃, vacuum pressure 0-5Kpa, outlet temperature 90-100℃;

[0110] The third chamber: continue heating and curing, the temperature is 160-180℃, no vacuum, the temperature out of the chamber is 115-135℃;

[0111] The fourth chamber: vacuum pressure 10-20Kpa, cooling and shaping; due to high temperature cooling too fast, the edge of the glass is deformed and bubbles are easily generated. Vacuuming at this stage can reduce or avoid the generation of bubbles.

[0112] The process flow of the first chamber and the second chamber is the same, and each chamber includes pre-vacuuming for 8-12s, vacuuming the upper and lower chambers for 500-550s, vacuuming the lower chamber for 160-200s, and deflation and heat preservation for 60s.

[0113] The first chamber and the second chamber exhaust the air between the second film 122 and the glass through negative pressure, and heat and cure the second film 122.

[0114] When the vacuum is drawn downward, the vacuum valve at the top of the chamber is closed, and the upper rubber plate presses the glass downward under the suction force from the bottom.

[0115] In some embodiments, the method of combining the first laminated glass 11 and the second laminated glass 12 into the insulating glass 10 is as follows:

[0116] Cleaning: The first laminated glass 11 and the second laminated glass 12 need to be thoroughly cleaned and dried before being joined to ensure that there are no stains, water drops or water stains on the glass surface. This step is crucial to ensure the sealing and overall quality of the final product.

[0117] Lamination: The lamination process is a key step in the production of the insulating glass 10. In this step, the first laminated glass 11 and the second laminated glass 12 are precisely spaced and combined using the spacer bar 132. The spacer bar 132 not only plays an isolation role, but also helps to improve the overall structural stability and thermal insulation performance of the insulating glass 10.

[0118] Gluing: After the lamination process, glue coating is performed. The purpose of this step is to further ensure the sealing between the layers of the insulating glass 10, prevent air and moisture from penetrating, and thus ensure the durability and insulation performance of the insulating glass 10.

[0119] Packaging and storage: After all the above processes, the insulating glass 10 will be finally packaged and stored in the warehouse.

[0120] Since the film layer of triple silver coated glass contains silver, and silver has good hydrophilicity, water vapor or sulfur dioxide will directly react with silver to oxidize, causing the film layer to diffuse and oxidize from the edge to the middle of the triple silver coated glass. After silver is oxidized, the adhesion of the film layer will decrease, causing the film layer to lose its low-radiation function and reduce the thermal insulation performance of the insulating glass 10; at the same time, after silver is oxidized, the color of the film layer will change, and the consistency of the appearance will be destroyed. Therefore, the film layer on the edge of the triple silver coated glass needs to be removed before the sheets are assembled. For example, a film removal machine is used for removal, with a film removal speed of 300-400mm / s, a film wheel pressure of 1.5-1.8bar, and a film wheel speed of 1800-2000rpm; the conductivity of the pure water in the cleaning machine is ≤10μS / cm.

[0121] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A hollow glass, characterized in that: The invention comprises a first laminated glass and a second laminated glass, wherein a hollow layer is formed between the first laminated glass and the second laminated glass, wherein the first laminated glass comprises a first glass, a first film and a second glass, wherein the first film is sandwiched between the first glass and the second glass, and wherein the second laminated glass comprises a third glass, a second film and a fourth glass, wherein the second film is sandwiched between the third glass and the fourth glass, and wherein a heating wire is arranged on the first film and / or the second film.

2. The insulating glass according to claim 1, characterized in that: The first glass is electrochromic glass, and / or the second glass is triple-silver coated glass.

3. The insulating glass according to claim 1, characterized in that: The third glass and / or the fourth glass is / are ultra-clear glass.

4. The insulating glass according to any one of claims 1 to 3, characterized in that: The hollow layer includes a spacer bar and a hollow cavity. The hollow cavity is surrounded by the second glass, the third glass and the spacer bar. The hollow cavity is filled with an inert gas.

5. The insulating glass according to any one of claims 1 to 3, characterized in that: The diameter of the heating wire is 0.2-0.5 mm.

6. A method for preparing insulating glass according to any one of claims 1 to 5, characterized in that: include: Providing a first laminated glass and a second laminated glass, and arranging a heating wire on a first film of the first laminated glass and / or a second film of the second laminated glass; A spacer is placed between the first laminated glass and the second laminated glass to obtain a hollow layer.

7. The method for preparing insulating glass according to claim 6, characterized in that: The preparation method of the first laminated glass is as follows: The first film is sandwiched between the electrochromic glass and the triple-silver coated glass, and then the combined structure is placed in a vacuum heating device; First chamber: temperature 140-150℃, vacuum pressure 5-10Kpa, outlet temperature 70-80℃; Second chamber: temperature 170-180℃, vacuum pressure 0-5Kpa, outlet temperature 100-110℃; The third chamber: continue heating and curing, the temperature is 180-200℃, and the exit temperature is 120-140℃; The fourth chamber: vacuum pressure 10-20Kpa, cooling and shaping.

8. The method for preparing hollow glass according to claim 7, characterized in that: The process flow of the first chamber and the second chamber is the same, and each chamber includes pre-evacuation for 8-12 seconds, upper and lower vacuuming for 600-650 seconds, lower vacuuming for 150-180 seconds, and deflation and heat preservation for 60 seconds.

9. The method for preparing insulating glass according to claim 6, characterized in that: The preparation method of the second laminated glass is as follows: The second film provided with the heating wire is sandwiched between two ultra-clear glasses, and then the combined structure is placed in a vacuum heating device; First chamber: temperature 130-140℃, vacuum pressure 5-10Kpa, outlet temperature 70-80℃; Second chamber: temperature 140-160℃, vacuum pressure 0-5Kpa, outlet temperature 90-100℃; The third chamber: continue heating and curing, the temperature is 160-180℃, and the exit temperature is 115-135℃; The fourth chamber: vacuum pressure 10-20Kpa, cooling and shaping.

10. The method for preparing insulating glass according to claim 9, characterized in that: The process flow of the first chamber and the second chamber is the same, and each chamber includes pre-evacuation for 8-12 seconds, upper and lower vacuuming for 500-550 seconds, lower vacuuming for 160-200 seconds, and deflation and heat preservation for 60 seconds.

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