CN115286829A - Infrared radiation-proof inner suspension film - Google Patents
Infrared radiation-proof inner suspension film Download PDFInfo
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- CN115286829A CN115286829A CN202210916295.1A CN202210916295A CN115286829A CN 115286829 A CN115286829 A CN 115286829A CN 202210916295 A CN202210916295 A CN 202210916295A CN 115286829 A CN115286829 A CN 115286829A
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- silver alloy
- infrared radiation
- film
- suspension film
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 24
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- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000002265 prevention Effects 0.000 claims abstract description 21
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- 239000002994 raw material Substances 0.000 claims description 10
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- -1 polydimethylsiloxane Polymers 0.000 claims description 4
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- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 claims description 3
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- C—CHEMISTRY; METALLURGY
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- C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
- C09D171/02—Polyalkylene oxides
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
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Abstract
The application discloses an infrared radiation prevention inner suspension film which is used for being mounted in a tensioning frame clamped between two layers of glass in a tensioning mode, wherein the inner suspension film comprises an inner suspension film base material, at least one silver alloy layer is formed on the outer side of the inner suspension film base material, and an infrared radiation prevention layer is formed on the outer side of the silver alloy layer; the inner suspension film substrate comprises a polyester film, at least one ZnO/Al layer is formed on the outermost side of the polyester film facing the silver alloy layer, and an adhesion layer is formed between the ZnO/Al layer and the outermost side of the polyester film; the silver alloy layer comprises a silver alloy base layer, a metal titanium protective layer is formed on the outer side of the silver alloy base layer, and an indium oxide protective layer is formed on the outer side of the metal titanium protective layer. This application prevents the infrared radiation layer through setting up in the outside of silver alloy-layer, can carry out twice absorption to the infrared radiation of incident, can show and reduce the outer infrared radiation of interior suspension membrane, has reduced glass curtain wall to the toast and the heating action of outside object, has reduced the harm to external environment.
Description
Technical Field
The application relates to a cavity insulating glass door and window in the energy-conserving building field especially relates to a prevent infrared radiation and hang membrane in the infrared radiation that prevents that infrared radiation from the inside interior membrane of hanging of cavity insulating glass door and window outwards reflects.
Background
Along with the more and more strict limitation of energy conservation and environmental protection, the existing high-rise buildings usually adopt large-area hollow glass doors and windows to isolate indoor and outdoor temperature difference and realize light transmission. The glass of the insulated glazing is usually provided with a reflective film or coating which reflects part of harmful light such as ultraviolet light and allows visible light to transmit.
The inner suspension film door and window is an energy-saving door and window with a lightweight structure developed on the basis of hollow glass door and window, and the basic principle is that one or more layers of transparent plastic films are added in an inner cavity of hollow glass, and the inner cavity of the hollow glass is isolated into a plurality of mutually independent spaces through the plastic films, so that convection cannot be realized by the inner and outer temperature difference of the hollow glass, and the structure weight is reduced while an excellent energy-saving effect is achieved.
The inner suspension film for the inner suspension film door and window is usually made of a plastic film with better heat insulation effect. For example, a plastic film such as a window film commonly used in the general building field can be used as the inner suspension film. For example, in prior art CN 106435497A, previously filed by the applicant, a golden low emissivity energy saving window film is disclosed, which has a golden color in the sun. The prior art window film material generally requires a metal oxide layer and a silver-containing metal layer to be formed on the surface of the substrate. For example, CN 106435497A describes that the golden window film comprises, from inside to outside: a flexible transparent PET substrate layer; from Si 3 N 4 A first high refractive index layer; a first metal oxide layer composed of ZnO: al; a first silver alloy layer composed of 98% of Ag and 2% of Pd; a first barrier layer composed of Si; from Nb 2 O 5 A second high refractive index layer; forming a second metal oxide layer from ZnO and Al; a second silver alloy layer composed of 98% of Ag and 2% of Pd; a second barrier layer made of Si; from Si 3 N 4 And a third high refractive index layer. The prior art particularly points out that the color of the golden window film and the functions of effectively reflecting infrared rays and ultraviolet rays and improving the heat insulation performance of the window film are mainly brought by the compact silver alloy layer, the compactness of the silver alloy layer can be improved by the ZnO/Al metal oxide layer with the thickness of several nanometers, and the ZnO/Al layer with the thickness of several nanometers can promote the growth of the subsequent silver alloy layer to enable the subsequent silver alloy layer to grow into a continuous compact structure as soon as possible, so that the thickness of the subsequent silver alloy layer is obviously reduced, and the light transmittance of the window film is improved.
For the interior membrane door and window that hangs, the thermal expansion coefficient of the interior membrane of centre gripping between two glass is greater than glass, therefore interior membrane that hangs can have the tendency of lax gradually in the use, and the refraction direction of lax interior membrane to light is inconsistent, can make through the outdoor scenery of glass door and window observation and can produce visual deformation because of the refraction. In order to maintain parallel transmission of light rays and avoid visual distortion, the inner suspension film needs to be installed between the hollow glasses in a tensioned state. The suspended membrane in the tensioned state is deformed in the transverse direction. However, the ZnO film layer grown by the magnetron sputtering method has a highly vertical crystallization property, is very sensitive to transverse deformation, and is easy to generate longitudinal cracks under the action of transverse stretching force, so that the metal silver film layer attached to the surface of the ZnO film layer also generates cracks, and the light transmittance and the reflection performance of the window film are influenced. Therefore, the window film containing the silver metal layer in the prior art can only be generally adhered to a flat and firm glass surface for use, and is difficult to apply to the field of the internal suspension film.
In addition, the prior art also has a reflective coated window film, which reflects infrared radiation in harmful light to heat the surrounding environment, and the large area of arc glass also forms light focusing, causing very serious light pollution to the surrounding environment and sometimes even igniting the surrounding articles. Thus, with such window films having a reflective coating, consideration is also given to suppressing the reflection of infrared radiation.
Disclosure of Invention
The technical problem to be solved by the present application is to provide an infrared radiation prevention internal suspension film to reduce or avoid the aforementioned problems.
In order to solve the technical problem, the application provides an infrared radiation prevention inner suspension film, which is used for being mounted in a tensioning frame clamped between two layers of glass in a tensioning mode, wherein the inner suspension film comprises an inner suspension film base material, at least one silver alloy layer is formed on the outer side of the inner suspension film base material, and an infrared radiation prevention layer is formed on the outer side of the silver alloy layer; the inner suspension film substrate comprises a polyester film, at least one ZnO/Al layer is formed on the outermost side of the polyester film facing the silver alloy layer, and an adhesion layer is formed between the ZnO/Al layer and the outermost side of the polyester film; the silver alloy layer comprises a silver alloy base layer, a metal titanium protective layer is formed on the outer side of the silver alloy base layer, and an indium oxide protective layer is formed on the outer side of the metal titanium protective layer.
Preferably, the adhesion layer is prepared from the following raw materials in parts by weight: 6-8 parts of polydimethylsiloxane; 1-5 parts of polyurethane; 15-30 parts of vinyl trimethoxy silane; 80-120 parts of isopropanol; 10-20 parts of polyethylene glycol; 1-5 parts of zinc oxide; 0.1-0.5 weight part of alumina; 0.1-0.5 weight part of magnesium sulfate.
Preferably, the thickness of the silver alloy base layer is 10-15nm; the thickness of the metal titanium protective layer is 3-6nm; the thickness of the indium oxide protective layer is 55-85nm.
Preferably, the thickness of the adhesion layer is 10-20nm; the thickness of the ZnO-Al layer is 3-6nm.
Preferably, the outer side of the inner suspending film substrate comprises two superposed silver alloy layers, the two silver alloy layers have the same structure and comprise a silver alloy base layer, a metal titanium protective layer and an indium oxide protective layer.
Preferably, the inner suspension film substrate comprises an adhesion layer and a ZnO-Al layer which are sequentially symmetrical on two sides and take the polyester film as the center; a silver alloy layer is formed on both sides of the inner suspending film substrate; a layer of infrared radiation prevention layer is formed on the outer side of each of the two silver alloy layers; the silver alloy layers on the two sides of the inner suspension film substrate have the same structure and comprise a silver alloy base layer, a metal titanium protective layer and an indium oxide protective layer.
Preferably, the infrared radiation prevention layer is formed by coating an ultraviolet curing glue containing an infrared absorber on the outer side of the silver alloy layer and then curing the glue by ultraviolet light.
Preferably, the infrared radiation prevention layer is prepared by ultraviolet curing the following raw materials in parts by weight: 50-80 parts of dipentaerythritol pentahexaacrylate, 50-100 parts of polyacrylate resin, 5-10 parts of phthalocyanine, 25-55 parts of nano lead oxide and 1-5 parts of 2-hydroxy-2-methyl-1-phenyl-1-acetone as an initiator.
This application can carry out twice absorption to the infrared radiation of incidence through set up in the outside on silver-alloy layer, can show and reduce the outer infrared radiation of interior suspension membrane, has reduced glass curtain wall to the toast and the heating effect of outside object, has reduced the harm to external environment.
Drawings
The drawings are only for purposes of illustrating and explaining the present application and are not to be construed as limiting the scope of the present application.
Fig. 1 is a partially cut-away schematic view of an inner suspension membrane door and window according to an embodiment of the present application.
Fig. 2 shows a schematic diagram of the principle of thermal insulation of an inner suspension membrane according to an embodiment of the present application.
Fig. 3a-3c show schematic cross-sectional structures of an inner suspension membrane according to three embodiments of the present application, respectively.
FIG. 4 shows an exploded perspective view of a tension frame according to one embodiment of the present application.
FIG. 5 is an enlarged, partially exploded view of a tensioning block according to another embodiment of the present application.
Fig. 6 is a schematic structural diagram of a second frame body according to an embodiment of the present application.
Figure 7 shows a schematic diagram of a resilient tensioner according to an embodiment of the present application.
Figure 8 shows an exploded perspective view of an elastic tensioning device according to yet another embodiment of the present application.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present application, embodiments of the present application will now be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
As shown in fig. 1, the present application provides an inner suspension film door and window, comprising at least a tension frame 3 sandwiched between two glass sheets 1 for tensioning an inner suspension film 2, wherein the tension frame 3 of the present application can be installed between the two glass sheets 1 as a separate component with the inner suspension film 2 tensioned thereon, so that the glass door and window need not be installed in consideration of the tensioning of the inner suspension film, thereby reducing the complexity of installation.
The inner suspension film 2 is the inner suspension film for preventing infrared radiation from reflecting outwards from the inside of the hollow heat-insulating glass door window, and the inner suspension film for preventing infrared radiation is called as the inner suspension film for conciseness in the following description.
Further, in the illustrated embodiment, both sides of the tension frame 3 may be adhered between the two sheets of glass 1 by the spacer 4. For example, the spacer 4 may be an existing composite butyl aluminum spacer, butyl rubber for adhesion is provided on both sides of the spacer 4, and a molecular sieve for adsorbing water vapor may be provided in a hollow structure inside the spacer 4. The inner suspension film door and window shown in the figure is only provided with one layer of inner suspension film 2, and can also be deformed into a structure with two or more layers of inner suspension films in a mode of additionally arranging the tensioning frame 3 according to needs.
The inner suspension film 2 is made of a plastic film with good heat-resistant and insulating effects, and needs to be tensioned between hollow glasses to keep light rays transmitted in parallel and avoid visual deformation.
Fig. 2 is a schematic diagram illustrating the principle of thermal insulation of the inner suspension film according to an embodiment of the present application, and the inner suspension film 2 comprises an inner suspension film substrate 21, at least one silver alloy layer 22 is formed on the outer side of the inner suspension film substrate 21, and an infrared radiation preventing layer 27 is formed on the outer side of the silver alloy layer 22. The silver alloy layer 22 can realize the functions of high visible light transmittance and reflection of most infrared rays, so as to effectively insulate heat.
The infrared radiation preventing layer 27 is a coating layer having an infrared absorption function, and is used for absorbing infrared radiation and preventing the infrared radiation from reflecting outwards from the inside of the hollow heat insulating glass door or window. More specifically, the infrared radiation preventing layer 27 is formed by coating an ultraviolet curing paste containing an infrared absorber on the outer side of the silver alloy layer 22 and then curing by ultraviolet light. The infrared radiation prevention layer 27 formed on the outer side of the silver alloy layer 22 absorbs infrared radiation in sunlight once when the sunlight enters, after light penetrating through the infrared radiation prevention layer 27 is reflected by the silver alloy layer 22, the infrared radiation therein is absorbed once by the infrared radiation prevention layer 27, the infrared radiation of the inner suspension film to the outside can be obviously reduced through two times of absorption, the baking and heating effects of the glass curtain wall on objects on the outer side are reduced, and the harm to the external environment is reduced.
Fig. 3a to 3c further show schematic cross-sectional structures of the inner suspension film according to various embodiments of the present application, wherein the inner suspension film substrate 21 comprises a polyester film 211, the outermost side of the polyester film 211 facing the silver alloy layer 22 is at least formed with a ZnO: al layer 213 (aluminum-doped zinc oxide layer, aluminum content is not more than 2 wt%), and an adhesion layer 212 is formed between the ZnO: al layer 213 and the outermost side of the polyester film 211. The ZnO — Al layer 213 may be formed on the surface of the adhesion layer 212 by a single rotating cathode or by dc reactive magnetron sputtering.
As mentioned above, the ZnO-Al layer can promote the growth of the subsequent silver alloy layer to enable the subsequent silver alloy layer to grow into a continuous compact structure as soon as possible, so that the thickness of the subsequent silver alloy layer is obviously reduced, and the light transmittance of the window film is improved. However, the ZnO-Al layer has a defect that the film layer is crystallized by growing along the vertical direction of the film, and cracks are generated in a transverse stretching state. The inventors found that the probability of crack generation in the case of extreme wrinkles can be reduced by reducing the thickness of the ZnO: al layer, but the growth rate of the silver alloy layer on the ZnO: al layer and the compactness of the film layer are reduced at the same time.
A ZnO/Al layer with a thickness of 3nm to 6nm was formed on the polyester film under the same conditions as disclosed in CN 106435497A cited in the background art. The ZnO/Al layer was tested to be substantially crack free at a bend diameter of 5 mm, while the ZnO/Al layer still exhibited significant cracking at 10% tensile extension of the suspended film. Of course, if a thick silver alloy layer is formed on the surface of ZnO — Al layer, these cracks can be covered to some extent because of the good ductility of the silver alloy layer, and the surface inspection of the silver alloy layer will not reveal cracks. In this case, there is a contradiction that the thickness of the ZnO — Al layer may be decreased in order to reduce cracks, which may result in a decrease in the growth rate of the silver alloy layer, but a thicker silver alloy layer thickness is required to mask cracks in the inner layer, which may further increase the growth time of the silver alloy layer, thereby further increasing the production cost.
In order to overcome the contradiction, the present application provides an adhesion layer 212 on the inner side of the ZnO: al layer 213, so that the adhesion layer 212 is matched with the ZnO: al layer 213, surface cracks of the inner suspension film substrate and the silver alloy layer thereon are reduced, the light transmittance is improved, the growth rate of the silver alloy layer is increased without increasing the thickness of the ZnO: al layer, and the processing time and the production cost are reduced.
Fig. 2 is a schematic structure of an embodiment of the present disclosure, and those skilled in the art will understand that many modifications may be made to the present disclosure to achieve the above technical effects. For example, as in the prior art, a plurality of silver alloy layers 22 may be formed on the inner suspending film substrate 21, and a ZnO/Al layer 213 and an adhesion layer 212 may be provided for each silver alloy layer 22 (for example, the structure shown in fig. 3 c). Alternatively, other functional structural layers or the like may be provided between the attachment layer 212 and the mylar film 211. The silver alloy layer 22 may also be a multi-layer composite structure including other protective layers (described in further detail below).
Specifically, the adhesion layer 212 is formed by coating on the outer surface of the polyester film 211 and curing, and the adhesion layer 212 may be prepared from the following raw materials in parts by weight: 6-8 parts of polydimethylsiloxane; 1-5 parts of polyurethane; 15-30 parts of vinyl trimethoxy silane; 80-120 parts of isopropanol; 10-20 parts of polyethylene glycol; 1-5 parts of zinc oxide; 0.1-0.5 weight part of alumina; 0.1-0.5 weight part of magnesium sulfate.
In one embodiment, the inner membrane substrate can be prepared by the following method steps.
Firstly, 10-20 parts by weight of polyethylene glycol and 60-80 parts by weight of isopropanol are uniformly mixed, 1-5 parts by weight of zinc oxide, 0.1-0.5 part by weight of alumina and 0.1-0.5 part by weight of magnesium sulfate are respectively added into the mixed solution, and the mixture is mixed and stirred for 30-60 minutes to prepare the component A.
Then, 6-8 parts by weight of polydimethylsiloxane, 1-5 parts by weight of polyurethane, 15-30 parts by weight of vinyltrimethoxysilane and 20-40 parts by weight of isopropanol are mixed and stirred for 20-30 minutes, and the viscosity is 200-300 centipoises, so that the component B is prepared.
And mixing the component A and the component B, stirring for 20-30 minutes, coating the mixture on the surface of at least one side of the polyester film in a spin coating or spray coating mode, and curing at 120-130 ℃ for 2-3 hours to obtain the adhesive layer 212.
On the prepared adhesion layer 212, a ZnO: al layer 213 was formed by means of single-rotating cathode, dc reactive magnetron sputtering, thereby preparing the inner suspension film substrate 21 of the present application.
Further, at least one silver alloy layer 22 may be formed on the inner suspension film substrate 21 by single rotating cathode, dc reactive magnetron sputtering, and then the infrared radiation prevention layer 27 may be formed on the outer side of the silver alloy layer 22, thereby preparing an inner suspension film 2 that can be used in the present application.
Examples 1 to 3
The adhesion layer 212 was prepared on the surface of the polyester film 211 according to the following weight ratio of raw materials, based on the above preparation method. The polyester film 211 is a PET film with a light transmittance of 89% and a thickness of 25 μm.
Examples 4 to 6
On the adhesion layers prepared in examples 1 to 3, znO, al layer 213 (Al content 1.5wt%, znO content 98.5 wt%) and silver alloy layer 22 (98 wt% Ag, 2wt% Pd) were respectively formed by magnetron sputtering in this order, corresponding to examples 4 to 6.
Comparative examples D1 to D3
Referring to the preparation steps of examples 1 to 3, adhesive layers 212 for comparison were prepared on the surfaces of the polyester films 211 according to the following weight ratio of raw materials. The polyester film 211 was a PET film having a light transmittance of 89% and a thickness of 25 μm, to obtain comparative examples D1 to D3.
Comparative examples D4 to D6
Referring to the preparation steps of examples 1 to 3, adhesive layers 212 were prepared on the surfaces of the polyester films 211 according to the following raw material weight ratio, respectively, to obtain a comparative example. The polyester film 211 was a PET film having a light transmittance of 89% and a thickness of 25 μm, to obtain comparative examples D4 to D6.
Comparative examples D7 to D12
On the adhesion layers prepared in comparative examples D1 to D6, a ZnO: al layer (Al content 1.5wt%, znO content 98.5 wt%) and a silver alloy layer 22 (98 wt% Ag, 2wt% Pd) were respectively formed as comparative examples in sequence by magnetron sputtering, corresponding to comparative examples D7 to D12.
| Comparative example | D7 | D8 | D9 | D10 | D11 | D12 |
| ZnO to Al layer thickness nm | 3 | 5 | 6 | 3 | 5 | 6 |
| Thickness nm of |
10 | 13 | 15 | 10 | 13 | 15 |
| Average growth speed nm/min of silver alloy layer | 0.1 | 0.15 | 0.05 | 0.5 | 0.51 | 2.5 |
Through the above comparative experiments, the average growth rate of the silver alloy layer was greatly affected by the oxide composition, and particularly, the effect of a very small amount of magnesium sulfate on the growth rate was the greatest.
The performance parameters of the surface layers of the respective adhesion layers of the polyester films of examples 1 to 6 and comparative examples D1 to D12 were measured, respectively.
The comparison of various performance parameters shows that the additional layer arranged on the inner side of the silver alloy layer is matched with the ZnO/Al layer, so that the surface cracks of the inner suspension film base material can be obviously reduced, the light transmittance is improved, the growth speed of the silver alloy layer is improved under the condition of not increasing the thickness of the ZnO/Al layer, and the processing time and the production cost are reduced.
In addition, excessive addition of metal oxide can reduce the transparency of the film, easily cause cracks on the surface of ZnO-Al layer, further affect the surface quality of the silver alloy layer and the product quality. Further tests show that the addition of a small amount of polyurethane is beneficial to maintaining the bonding strength of the silver alloy layer and the ZnO-Al layer and avoiding the layering of the silver alloy layer and the ZnO-Al layer.
Further, as previously mentioned, the silver alloy layer 22 is a multi-layer composite structure that may include other protective layers.
For example, in the specific embodiment shown in fig. 3a, in the inner suspension film 2 of the present application, the silver alloy layer 22 on the outer side of the inner suspension film substrate 21 comprises a silver alloy base layer 221 with a thickness of 10-15nm, a metallic titanium protective layer 222 with a thickness of 3-6nm is formed on the outer side of the silver alloy base layer 221, and an indium oxide protective layer 223 with a thickness of 55-85nm is formed on the outer side of the metallic titanium protective layer 222; the infrared radiation preventing layer 27 is formed outside the indium oxide protective layer 223 of the silver alloy layer 22. The silver alloy base layer 221 may be formed on the outer surface of the inner suspension film substrate 21, that is, on the outer surface of the ZnO/Al layer 213, by using a single rotating cathode and dc reactive magnetron sputtering method using 98wt% Ag and 2wt% Pd. The metallic titanium protective layer 222 may be formed on the outer surface of the silver alloy base layer 221 by a single rotating cathode or dc reactive magnetron sputtering method. The indium oxide protection layer 223 may be formed on the outer surface of the titanium metal protection layer 222 by a double-rotating cathode and intermediate frequency reactive magnetron sputtering method. In a preferred embodiment, the indium oxide protective layer 223 may contain 90wt% indium oxide and 10wt% tin oxide.
As described above, in order to ensure the production efficiency of the silver alloy base layer 221 and to save the production cost, the thickness of the ZnO/Al layer 213 must be reduced, and the adhesion layer 212 must be added to match the ZnO/Al layer 213 to increase the growth rate of the silver alloy base layer 221. However, as the thickness of the silver alloy base layer 221 increases, it is promoted by the adhesion layer 212 to gradually decrease until it disappears. In the absence of the complete adhesion layer 212, the growth rate of the silver alloy base layer 221 is greatly reduced (see average growth rate parameters of comparative examples D7 to D9), and therefore the thickness of the silver alloy base layer 221 is preferably not more than 15nm, otherwise the production efficiency is greatly reduced. The surface quality of the silver alloy base layer 221 with a lower thickness has certain defects, so that the surface quality of the silver alloy base layer 221 can be improved by additionally arranging a thin metal titanium protective layer 222. In addition, the silver alloy base layer 221 may be originally used to compensate for the occurrence of surface cracks (see the performance parameters of 5 mm diameter bending surface cracks and 5% film stretching surface cracks of comparative examples D7-D11), but since the thickness of the silver alloy base layer 221 is limited, its coverage of cracks is artificially reduced. Therefore, in order to make up for the defect of crack coverage caused by the thickness of the silver alloy base layer 221 (the thickness of the titanium metal protective layer 222 is too small, the growth rate is slow, and it is difficult to provide crack coverage by the titanium metal protective layer), an indium oxide protective layer 223 with a large thickness is additionally arranged on the outer side of the titanium metal protective layer 222. The growth speed of the amorphous indium oxide is high, and the surface quality of the bottom layer is repaired through the metal titanium protective layer, so that the indium oxide protective layer can grow quickly and keep good surface quality. Meanwhile, the amorphous indium oxide is not easy to crack in a stretching state relative to the crystalline ZnO, al layer, silver alloy layer and metal titanium layer of the bottom layer, so that the bottom layer can be covered and prevented from cracking by the large-thickness indium oxide protective layer 223, and meanwhile, the transparent indium oxide protective layer 223 has little influence on the light transmission performance of the film layer.
In the embodiment shown in fig. 3b, in the inner suspension film 2 of the present application, the outer side of the inner suspension film substrate 21 includes two stacked silver alloy layers 22, wherein the two silver alloy layers 22 have the same structure and each include a silver alloy base layer 221, a metallic titanium protective layer 222 and an indium oxide protective layer 223.
In the embodiment shown in fig. 3c, a silver alloy layer 22 is formed on both sides of the inner suspension film substrate 21, and an infrared radiation preventing layer 27 is formed on the outer sides of the two silver alloy layers 22. In order to accommodate the growth of the silver alloy layers 22 on both sides, the inner suspension film substrate 21 of the present embodiment actually includes the adhesion layer 212 and the ZnO/Al layer 213, which are symmetric on both sides in this order with respect to the polyester film 211, thereby forming the inner suspension film substrate 21 having a high growth rate and a low tensile crack defect on both sides. In the present embodiment, the silver alloy layers 22 on both sides of the inner suspension film base 21 have the same structure, and each of the silver alloy layers includes a silver alloy base layer 221, a metallic titanium protective layer 222, and an indium oxide protective layer 223.
When the inner suspending film 2 of the embodiment shown in fig. 3a and 3b is used, the installation direction needs to be taken into consideration, and the side corresponding to the silver alloy layer 22 needs to face the direction of sunlight irradiation. The inner suspension membrane 2 of the embodiment shown in fig. 3c can be installed in any direction during use, and the problem of installation direction does not need to be considered.
Further, the infrared radiation prevention layer 27 of the present application may adopt any one of the prior art coatings having an infrared absorption function and the processing technology thereof. In one embodiment of the present application, the infrared radiation preventing layer 27 is formed by coating an ultraviolet curing paste containing an infrared absorber on the outer side of the silver alloy layer 22 and then curing the paste by ultraviolet light.
Further, the infrared radiation prevention layer 27 of the present application is preferably prepared by uv curing the following raw materials in parts by weight: 50-80 parts of dipentaerythritol pentahexaacrylate, 50-100 parts of polyacrylate resin, 5-10 parts of phthalocyanine, 25-55 parts of nano lead oxide and 1-5 parts of 2-hydroxy-2-methyl-1-phenyl-1-acetone as an initiator.
Examples 7 to 9
On the silver alloy layers prepared in examples 4 to 6, infrared radiation preventing layers 27 were respectively coated and formed by ultraviolet light curing according to the following raw material weight ratio to obtain examples 7 to 9.
The films of examples 7 to 9 having the infrared radiation preventing layer were compared with the films of examples 4 to 6 having no infrared radiation preventing layer, and the reflectance and transmittance were measured, respectively, as follows.
| Visible light transmittance% | Reflectance of infrared light% | |
| Example 7 | 75 | 9 |
| Example 8 | 74 | 7 |
| Example 9 | 74 | 5 |
| Example 4 | 76 | 74 |
| Example 5 | 75 | 75 |
| Example 6 | 75 | 78 |
By contrast, the film provided with the infrared radiation prevention layer has no significant change in visible light transmittance, but has a significant decrease in the amount of infrared light reflected outward.
In order to more clearly understand the tensile tension state of the inner suspension film, the structure of the inner suspension film door and window of the present application will be further described in detail with reference to fig. 4 to 8.
Because the tensioning operation of the inner suspension film in the prior art is very complicated, four edges of the inner suspension film need to be clamped on a plurality of elastic elements respectively during installation, and the tensioning force needs to be locally and repeatedly adjusted in order to prevent the inner suspension film from wrinkling. In addition, the interior membrane of hanging repeats expend with heat and contract with cold in the long-term use, and the tensile force difference can lead to the film to local position extrusion formation fold, and this can influence glass door and window's permeability, and the outdoor scenery of observation can produce visual deformation because of the refraction.
In order to solve the above problem, as seen in the exploded perspective view of the tension frame 3 shown in fig. 4, the four sides of the inner suspension film 2 of the present application are wound around four reels 20, respectively, and both ends of the four reels 20 are mounted inside the tension frame 3 by elastic tensioners 5, respectively.
In one illustrated embodiment, in order to facilitate the exposure of both ends of the winding shaft 20 while tensioning the inner suspension film 2, the inner suspension film 2 is a rectangle with four corners cut off such that the width of the four sides of the inner suspension film 2 becomes narrower as they are closer to the edge positions, and thus the winding thickness of the inner suspension film 2 on the winding shaft 20 becomes thicker as it is closer to the middle of the winding shaft 20 and the winding thickness of the inner suspension film near both ends of the winding shaft 20 becomes thinner when wound on the winding shaft 20. That is, the inner suspension film 2 wound on the reel 20 is formed into a spindle shape having a thick middle and thin ends. Therefore, as the inner suspension film 2 is tightly wound around the winding shaft 20, the tension of the middle position of the inner suspension film 2 is gradually greater than that of the corner position, and the stretching and loosening of the film caused by the thermal expansion of the middle suspended inner suspension film can be offset. Meanwhile, the winding edge of the inner suspension film 2 tends to extend towards the two thinner ends, thereby naturally eliminating the phenomenon that the film is locally extruded to generate wrinkles.
As can be seen from the process of stretching the inner suspension film under tension, the central suspended portion of the inner suspension film is stretched to the greatest extent during use, while the reel portion does not need to be stretched excessively, but if the thickness of the silver alloy layer is too thin or the ZnO: al layer is not dense enough during winding around the reel 20, cracks are likely to occur in the portion of the inner suspension film adjacent to the reel, and the cracks are likely to propagate toward the middle under long-time tension, so that it is necessary to provide structural improvement of the inner suspension film.
Further, in order to facilitate the winding of the inner suspension film 2 by the winding shaft 20 to generate a uniform tension, it is preferable that the cross section of the middle portion of the winding shaft 20 for winding the inner suspension film 2 is circular. In addition, in order to facilitate that the tension force connected to the elastic tension device 5 is not loosened after the tension, the cross section of the reel 20 for connecting both ends of the elastic tension device 5 is square, so that the reel 20 is not easily rotated.
This application is through rolling up four limits of interior suspension membrane respectively on four spools, can obtain bigger tensile force in the middle part of interior suspension membrane, has offset interior suspension membrane be heated relaxation, has eliminated the fold through coiling nature simultaneously, therefore when installing on the tensioning frame, only need the both ends of tensioning spool, need not adjust the tensile force one by one to every position of periphery of interior suspension membrane, greatly reduced the complexity of tensioning operation.
Further, as shown in fig. 5, the tension frame 3 includes a first frame 31 and a second frame 32 disposed on both sides of the inner suspension film 2, and the elastic tension device 5 is disposed inside a cavity formed by the first frame 31 and the second frame 32 being engaged. In the illustrated embodiment, two elastic tensioning devices 5 are provided for each reel 20, so that a total of eight elastic tensioning devices 5 are provided inside the first frame 31 and the second frame 32, and only six elastic tensioning devices 5 are shown in fig. 4 due to the view angle occlusion. Two elastic tensioning devices 5 are arranged in a group and are connected into a whole through a corner connecting piece 6 and are arranged at the corner position of the tensioning frame 3 together.
The first frame 31 may be formed by splicing four profiles, for example, as shown in fig. 5, which shows a partial structure of two profiles at a corner position. The four profiles can be connected into a whole in a welding or bonding mode, or two adjacent profiles can be connected into a whole through a corner connecting piece 6 through a screw. At this time, the corner connecting piece 6 not only integrally connects the two elastic tensioners 5 at the corner position (integrally connected by welding or screwing), but also integrally connects the two profiles. In the embodiment shown in fig. 5, the elastic tensioning device 5 is arranged mounted on the first frame 31. Of course, it will be understood by those skilled in the art that in an embodiment not shown, the elastic tensioning device 5 may also be arranged mounted on the second frame body 32.
The second frame 32 may be integrally formed by punching a metal plate or by casting metal or injection molding plastic, as shown in fig. 6. Alternatively, the second frame 32 may be formed by joining four sectional materials, as in the case of the first frame 31. Alternatively, the first housing 31 may be integrally formed of metal or plastic, as with the second housing 32. Preferably, the frame body for mounting the elastic tensioning device 5 is formed by splicing metal profiles, so that the frame body can have higher supporting strength to adapt to tensioning operation; correspondingly, the other frame body can be made of metal or plastic integrally molded parts.
The second frame 32 may be snap-fitted inside the first frame 31 as shown in fig. 1, or in a not shown embodiment, the first frame 31 may be snap-fitted inside the second frame 32. In order to prevent the first frame 31 and the second frame 32 from being separated accidentally, the side edges of the first frame 31 and the second frame 32 may be fastened by screws (screw holes are shown in the figure, and screws are not shown).
As shown in fig. 5 and 6, the first frame body 31 and the second frame body 32 have a first annular inner flange 311 and a second annular inner flange 321, respectively, which are located opposite to each other, and the first annular inner flange 311 and the second annular inner flange 321 abut against both side surfaces of the inner suspension film 2, respectively (fig. 1). Lean on and to hang membrane 2 centre gripping in first annular inner flange 311 and the second annular inner flange 321 on two sides of membrane 2 including leaning on for the inside of first framework 31 and second framework 32 can not communicate in the both sides cavity of interior membrane 2 that hangs, thereby makes the cavity of the both sides of interior membrane 2 that hangs obtain better isolation, has avoided the air current in the both sides cavity to take place the heat exchange.
Further, in order to further improve the insulating effect, in a not shown embodiment, it is preferable that elastic sealing strips are installed on the top of the first annular inner flange 311 and the second annular inner flange 321 abutting against the inner suspension membrane 2.
The following describes in further detail the specific structure of the elastic tension device for inner suspension membrane doors and windows according to the present invention with reference to fig. 7 to 8. As shown in the figure, the elastic tensioning device 5 includes a fixed base 51, a telescopic clamping seat 52 is disposed below the fixed base 51, and a spring 53 is disposed between the telescopic clamping seat 52 and the fixed base 51. For force balance, two springs 53 are arranged between the telescopic clamping seat 52 and the fixed base 51 side by side.
Further, the fixed base 51 may be formed by integrally cutting and bending a metal plate, and includes a fixed top plate 511 that abuts against the first end of the spring 53, two sides of the fixed top plate 511 are respectively bent to form fixed guide plates 512, and the bottom of the fixed guide plates 512 is bent to form a mounting plate 513; a positioning screw hole 5111 for positioning the spring 53 is formed on the fixed top plate 511; the mounting plate 513 is formed with a mounting screw hole 5131, and the entire elastic tension device 5 can be mounted inside the tension frame 3 by screws inserted into the mounting screw hole 5131.
Two positioning screw holes 5111 are provided on the fixed top plate 511 corresponding to the number of the springs 53, and one positioning screw 5112 is provided in each positioning screw hole 5111. After the set screw 5112 passes through the set screw hole 5111, the end of the set screw passes through the end of the spring 53, so that the spring 53 will not break away from the set screw 5112 and fail during compression.
The retractable clamping seat 52 can also be formed by integrally cutting and bending a metal plate, and comprises a movable top plate 521 which abuts against the second end of the spring 53, the bottom of the movable top plate 521 is bent towards one side of the fixed top plate 511 to form a retractable guide plate 522, the retractable guide plate 522 passes through the tail end of a guide port 5113 at the bottom of the fixed top plate 511 and is bent upwards to form a hanging plate 523, and the tail end of the hanging plate 523 is formed with a clip hook plate 524; the end of the square section of the spool 20 is unrotatably caught in the concave space formed by the telescopic guide plate 522, the hanging plate 523, and the hook plate 524.
A guide groove 5121 is formed on the fixed guide plate 512, and protrusions 5211 are respectively formed at both ends of the movable top plate 521, and the protrusions 5211 are inserted into the guide groove 5121 and can move back and forth along the guide groove 5121.
When the elastic tensioning device 5 is assembled, the telescopic clamping seat 52 deflects by a certain angle, the protruding part 5211 is inserted into the guide groove 5121, then the telescopic clamping seat 52 is corrected, the spring 53 is placed between the telescopic clamping seat 52 and the fixed base 51, and finally the positioning screw 5112 is screwed to fix the position of the spring 53. After the fixed base 51 is installed on the tension frame 3, the telescopic clamping seat 52 is limited below the fixed base 51 through the guide groove 5121 and the guide opening 5113, and the telescopic clamping seat 52 can only move in parallel along the guide groove 5121, so that a stable elastic action can be provided for the end of the reel 20.
The end of the scroll 20 is of a square section structure, and can be clamped in concave spaces of the telescopic guide plate 522, the hanging plate 523 and the clip hook plate 524 without rotating, so that the clamping structure is simple and effective, and the operation is very convenient. The elastic tensioning device 5 is simple in structure and high in operation reliability, the compression force of the spring 53 is converted into the tensile elastic force, the elastic continuous effect of the whole structure is extremely high, and the elastic tensioning device can be used in a maintenance-free operation mode for life.
It should be understood by those skilled in the art that although the present application has been described in terms of several embodiments, not every embodiment includes every implementation of an independent aspect. The description is thus given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims and are to be interpreted as combined with each other in a different embodiment so as to cover the scope of the present application.
The above description is only an exemplary embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any equivalent alterations, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of this application shall fall within the scope of this application.
Claims (8)
1. An infrared radiation prevention internal suspension film for being installed in a tensioning frame (3) clamped between two layers of glass (1) in a tensioning mode, and is characterized in that the internal suspension film (2) comprises an internal suspension film base material (21), at least one silver alloy layer (22) is formed on the outer side of the internal suspension film base material (21), and an infrared radiation prevention layer (27) is formed on the outer side of the silver alloy layer (22); the inner suspension film substrate (21) comprises a polyester film (211), at least one ZnO/Al layer (213) is formed on the outermost side of the polyester film (211) facing the silver alloy layer (22), and an adhesion layer (212) is formed between the ZnO/Al layer (213) and the outermost side of the polyester film (211); the silver alloy layer (22) comprises a silver alloy base layer (221), a metal titanium protective layer (222) is formed on the outer side of the silver alloy base layer (221), and an indium oxide protective layer (223) is formed on the outer side of the metal titanium protective layer (222).
2. The infrared radiation prevention internal suspension film as claimed in claim 1, wherein the adhesion layer (212) is prepared from the following raw materials in parts by weight: 6-8 parts of polydimethylsiloxane; 1-5 parts of polyurethane; 15-30 parts of vinyl trimethoxy silane; 80-120 parts of isopropanol; 10-20 parts of polyethylene glycol; 1-5 parts of zinc oxide; 0.1-0.5 weight part of alumina; 0.1-0.5 weight part of magnesium sulfate.
3. The infrared radiation resistant inner suspension film according to claim 1, wherein the silver alloy based layer (221) has a thickness of 10 to 15nm; the thickness of the metallic titanium protective layer (222) is 3-6nm; the thickness of the indium oxide protective layer (223) is 55-85nm.
4. The infrared radiation resistant inner suspension film of claim 1, wherein the thickness of the adhesion layer (212) is 10-20nm; the thickness of the ZnO-Al layer (213) is 3-6nm.
5. The infrared radiation preventing internal suspension film according to any one of claims 1 to 4, wherein the outer side of the internal suspension film substrate (21) comprises two superposed silver alloy layers (22), and the two silver alloy layers (22) have the same structure and each comprise a silver alloy base layer (221), a metallic titanium protective layer (222) and an indium oxide protective layer (223).
6. The infrared radiation preventing inner suspension film according to any one of claims 1 to 4, wherein the inner suspension film substrate (21) comprises an adhesion layer (212) and a ZnO: al layer (213) which are bilaterally symmetrical in this order with respect to a polyester film (211) as a center; a silver alloy layer (22) is formed on both sides of the inner suspending film substrate (21); a layer of infrared radiation prevention layer (27) is formed on the outer side of each of the two silver alloy layers (22); the silver alloy layers (22) on both sides of the inner suspension film substrate (21) have the same structure, and each silver alloy layer comprises a silver alloy base layer (221), a metallic titanium protective layer (222) and an indium oxide protective layer (223).
7. The infrared radiation preventing internal suspension film as claimed in any one of claims 1 to 6, wherein the infrared radiation preventing layer (27) is formed by coating an ultraviolet-curable paste containing an infrared absorber on the outer side of the silver alloy layer (22) and then curing by ultraviolet light.
8. The infrared radiation prevention internal suspension film according to claim 7, wherein the infrared radiation prevention layer (27) is prepared by ultraviolet curing the following raw materials in parts by weight: 50-80 parts of dipentaerythritol pentahexaacrylate, 50-100 parts of polyacrylate resin, 5-10 parts of phthalocyanine, 25-55 parts of nano lead oxide and 1-5 parts of 2-hydroxy-2-methyl-1-phenyl-1-acetone as an initiator.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895276A (en) * | 2013-10-16 | 2014-07-02 | 信义玻璃工程（东莞）有限公司 | Silver-based low-radiation coated glass |
| CN105229252A (en) * | 2013-05-28 | 2016-01-06 | 索斯华尔技术公司 | There is the insulating window unit of cracking resistance Low emissivity suspended membrane |
| CN106435497A (en) * | 2016-09-08 | 2017-02-22 | 江苏双星彩塑新材料股份有限公司 | Gold low-radiation energy-saving window film and preparation method thereof |
| JP2017040921A (en) * | 2013-01-31 | 2017-02-23 | 日東電工株式会社 | Infrared reflection film |
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2022
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017040921A (en) * | 2013-01-31 | 2017-02-23 | 日東電工株式会社 | Infrared reflection film |
| CN105229252A (en) * | 2013-05-28 | 2016-01-06 | 索斯华尔技术公司 | There is the insulating window unit of cracking resistance Low emissivity suspended membrane |
| CN103895276A (en) * | 2013-10-16 | 2014-07-02 | 信义玻璃工程（东莞）有限公司 | Silver-based low-radiation coated glass |
| CN106435497A (en) * | 2016-09-08 | 2017-02-22 | 江苏双星彩塑新材料股份有限公司 | Gold low-radiation energy-saving window film and preparation method thereof |
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| CN115286829B (en) | 2024-01-09 |
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