CN218630257U - Reflective silver film - Google Patents
Reflective silver film Download PDFInfo
- Publication number
- CN218630257U CN218630257U CN202223252374.1U CN202223252374U CN218630257U CN 218630257 U CN218630257 U CN 218630257U CN 202223252374 U CN202223252374 U CN 202223252374U CN 218630257 U CN218630257 U CN 218630257U
- Authority
- CN
- China
- Prior art keywords
- reflective
- layer
- silver film
- film
- adhesive layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Laminated Bodies (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The utility model relates to a reflective silver film, which comprises a base film, a silver film and a white reflecting layer, wherein the silver film and the white reflecting layer are sequentially stacked on the base film; wherein the thickness of the silver film is more than or equal to 50nm and less than or equal to 120nm, and the reflectivity of the white reflecting layer in a wave band of 0.3-2.5 μm is more than or equal to 50%. The reflective silver film can further improve the reflectivity of the reflective silver film in a wave band of 0.3-2.5 mu m under the condition that the thickness of the silver film is not changed, so that the reflectivity of the reflective silver film in the wave band of 0.3-2.5 mu m can reach more than 94.1 percent.
Description
Technical Field
The utility model relates to a membrane technical field especially relates to a reflection silver membrane.
Background
The conventional reflective silver film generally includes a silver film and a base film, which are stacked, and has a reflectance in a 0.3 μm-2.5 μm band proportional to a thickness of the silver film, however, when the thickness of the silver film is increased to 120nm or more, the reflectance of the conventional reflective silver film in the 0.3 μm-2.5 μm band is not increased any more than 94.1%.
SUMMERY OF THE UTILITY MODEL
Accordingly, it is necessary to provide a silver reflective film which can further improve the reflectance of the silver reflective film in the 0.3 μm to 2.5 μm band and can achieve a reflectance of 94.1% or more in the 0.3 μm to 2.5 μm band without changing the thickness of the silver reflective film.
The utility model provides a reflective silver film, which comprises a base film, and a silver film and a white reflective layer which are sequentially stacked on the base film; wherein the thickness of the silver film is 50nm-120nm, and the reflectivity of the white reflecting layer in a wave band of 0.3-2.5 μm is greater than or equal to 50%.
In one embodiment, the white reflective layer has a thickness of 10 μm to 100 μm.
In one embodiment, the white reflective layer includes a glue layer and a white sub-reflective layer, and the glue layer is stacked between the silver film and the white sub-reflective layer.
In one embodiment, the white sub-reflective layer has a reflectivity of 50% to 95% in a wavelength band of 0.3 μm to 2.5 μm.
In one embodiment, the white sub-reflective layer is a white sub-reflective layer made of a thermoplastic resin.
In one embodiment, the thickness of the white sub-reflective layer is 10 μm to 100 μm.
In one embodiment, the adhesive layer is a polyurethane-based adhesive layer, an acrylic-based adhesive layer, a rubber-based adhesive layer, a silicone-based adhesive layer, a polyester-based adhesive layer, a polyamide-based adhesive layer, an epoxy-based adhesive layer, a polyvinyl acetate-based adhesive layer, a vinyl alkyl ether-based adhesive layer, or a fluorine-containing adhesive layer.
In one embodiment, the glue layer is a thermoplastic resin layer.
In one embodiment, the adhesive layer has a reflectivity of 20% to 50% in the 0.3 μm to 2.5 μm wavelength band.
In one embodiment, the thickness of the glue layer is 2 μm to 10 μm.
The utility model provides an among the reflection silver membrane, because white reflection horizon is located the silver membrane and keeps away from the surface of base film, and the reflectivity at 0.3 mu m-2.5 mu m wave band is more than or equal to 50%, the sunlight of reflection full wave band that can be fine, consequently, the absorption of silver membrane to the light of 0.3 mu m-0.4 mu m wave band has been reduced, thereby under the unchangeable condition of silver membrane thickness, further improve the reflectivity of reflection silver membrane at 0.3 mu m-2.5 mu m wave band, make the reflection silver membrane can break through 94.1 at the reflectivity of 0.3 mu m-2.5 mu m wave band.
Drawings
Fig. 1 is a schematic structural view of a reflective silver film according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a reflective silver film according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a reflective silver film according to a third embodiment of the present invention.
In the figure: 10. a base film; 20. a silver film; 30. a white reflective layer; 301. a glue layer; 3011. a filler; 302. and a white sub-reflecting layer.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, which is a schematic structural diagram of a first embodiment of the reflective silver film provided by the present invention, in this embodiment, the reflective silver film includes a base film 10, and a silver film 20 and a white reflective layer 30 sequentially stacked on the base film 10.
Generally, the side of the base film 10 facing away from the silver film 20 is a light incident side, and in order to ensure that sunlight can penetrate through the base film 10 to reach the silver film 20, the light transmittance of the base film 10 is preferably equal to or greater than 80%, more preferably equal to or greater than 85%, and even more preferably equal to or greater than 88%.
In one embodiment, the base film 10 is a flexible base film, and the base film 10 is a polyethylene terephthalate (PET) film, a polyethylene naphthalate (PEN) film, a polyethylene terephthalate-1, 4-cyclohexanedimethanol (PETG) film, or a polymethyl methacrylate (PMMA) film; in order to better ensure the flexibility of the reflective silver film; in one embodiment, the base film 10 has a thickness of 20 μm to 200 μm.
In another embodiment, the base film 10 may also be a hard transparent material such as glass or the like.
In this embodiment, the thickness of the silver film 20 is 50nm to 120nm, including but not limited to 50nm, 60nm, 70nm, 80nm, 90nm, 100nm, 110nm, 120nm; in one embodiment, the material of the silver film 20 is selected from silver or a silver alloy, wherein the mass fraction of silver is 80% to 99.99%, and the remaining alloy component is selected from at least one of Rn, co, cu, in, nd, ge, sn, si, pt, pd, zn, cd, and Au, and specifically, the silver alloy is selected from at least one of silver/gold alloy, silver/palladium/copper alloy, silver/neodymium/gold alloy, silver/indium/tin alloy, silver/neodymium/copper alloy, silver/bismuth/gold alloy, silver/gold/tin alloy, silver/titanium/germanium alloy, or silver/zinc/nickel alloy.
In the embodiment, the reflectivity of the white reflective layer 30 in the 0.3 μm-2.5 μm waveband is greater than or equal to 50%, and the white reflective layer 30 can reflect the sunlight in the whole waveband well, so that the absorption of the silver film 20 to the light in the 0.3 μm-0.4 μm waveband is reduced, the reflectivity of the reflective silver film in the 0.3 μm-2.5 μm waveband is further improved under the condition that the thickness of the silver film 20 is not changed, the reflectivity of the reflective silver film in the 0.3 μm-2.5 μm waveband can break through 94.1%, and the reflective silver film has low material cost and high reflectivity.
In one embodiment, the white reflective layer 30 is a white reflective layer 30 made of a thermoplastic resin, and the white reflective layer 30 may include a filler 3011; including, but not limited to, a white reflective layer 30 having a reflectivity of 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 99% in the 0.3 μm-2.5 μm wavelength band.
In one embodiment, the thermoplastic resin is selected from aqueous polyurethane resins; the filler 3011 is at least one selected from calcium carbonate, magnesium carbonate, barium carbonate, magnesium sulfate, barium sulfate, calcium sulfate, zinc oxide, magnesium oxide, calcium oxide, titanium oxide, zinc oxide, aluminum hydroxide, hydroxyapatite, silica, mica, talc, kaolin, clay, glass powder, asbestos powder, zeolite, and clay silicate.
In order to make the white reflective layer 30 have a higher reflectance in the wavelength band of 0.3 μm to 2.5 μm, it is preferable that the filler 3011 have a refractive index of 1.6 or more, for example, calcium carbonate having a refractive index of 1.6 or more, barium sulfate having a refractive index of 1.6 or more, titanium oxide having a refractive index of 1.6 or more, zinc oxide having a refractive index of 1.6 or more.
In one embodiment, the white reflective layer 30 has a thickness of 10 μm to 100 μm, including but not limited to 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm.
It is understood that the shape of the filler 3011 is not particularly limited, and in one embodiment, the filler 3011 may have any shape of a bur shape, a rod shape, a spherical shape, an ellipsoidal shape, or an irregular shape.
The utility model provides a reflection silver membrane through silver membrane 20 and white reflection stratum 30's synergism for reflection silver membrane can break through 94.1% at the reflectivity of 0.3 mu m-2.5 mu m wave band.
As shown in fig. 2, the difference between the schematic structural diagram of the second embodiment of the reflective silver film of the present invention and the first embodiment is that in the present embodiment, the white reflective layer 30 includes a glue layer 301 and a white sub-reflective layer 302, and the glue layer 301 is stacked between the silver film 20 and the white sub-reflective layer 302.
It should be noted that, in order to make the white reflective layer 30 better reflect sunlight in the 0.3 μm-2.5 μm band, the reflectivity of the white sub-reflective layer 302 in the 0.3 μm-2.5 μm band is 50% -95%, including but not limited to 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90% or 95%.
In one embodiment, the white sub-reflective layer 302 is made of a thermoplastic resin, and the white reflective film may further include a pigment, specifically, the substrate of the white reflective film is selected from a thermoplastic resin, specifically, the thermoplastic resin is selected from at least one of a polyester resin, an acrylic resin, a polyimide resin, a fluorine-containing resin, an olefin resin or a cycloolefin resin, including but not limited to, the polyester resin is selected from polyethylene terephthalate or polyethylene naphthalate, and the olefin resin is selected from polyethylene or polypropylene; the pigment is at least one of barium sulfate, titanium dioxide or calcium carbonate.
In one embodiment, the thickness of the white sub-reflective layer 302 is 10 μm to 100 μm, including but not limited to 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm.
In order to ensure better adhesion between the white sub-reflecting layer 302 and the silver film 20, in this embodiment, the adhesive layer 301 is a polyurethane adhesive layer, an acrylic adhesive layer, a rubber adhesive layer, a silicone adhesive layer, a polyester adhesive layer, a polyamide adhesive layer, an epoxy adhesive layer, a polyvinyl acetate adhesive layer, a vinyl alkyl ether adhesive layer, or a fluorine-containing adhesive layer; in order to allow light to better transmit through the adhesive layer 301 to the white sub-reflecting layer 302, it is preferable that the adhesive layer 301 is a polyurethane-based adhesive layer or an acrylic-based adhesive layer.
In one embodiment, the thickness of the glue layer 301 is 2 μm to 10 μm, including but not limited to 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, or 10 μm.
In the embodiment, the silver film 20, the adhesive layer 301 and the white sub-reflecting layer 302 cooperate with each other, so that the reflectance of the reflective silver film in the wavelength band of 0.3 μm to 2.5 μm can be greater than 94.1%.
As shown in fig. 3, a schematic structural diagram of a third embodiment of the reflective silver film according to the present invention is different from that of the second embodiment in that, in the present embodiment, the adhesive layer 301 is a thermoplastic resin layer.
In one embodiment, the thermoplastic resin layer in this embodiment may include the filler 3011, so that the reflectivity of the glue layer 301 in the wavelength band of 0.3 μm to 2.5 μm is 20% to 50%, including but not limited to 20%, 30%, 40% or 50%; specifically, the filler 3011 is at least one selected from calcium carbonate, magnesium carbonate, barium carbonate, magnesium sulfate, barium sulfate, calcium sulfate, zinc oxide, magnesium oxide, calcium oxide, titanium oxide, zinc oxide, aluminum hydroxide, hydroxyapatite, silica, mica, talc, kaolin, clay, glass powder, asbestos powder, zeolite, and silica clay.
In order to make the white reflective layer 30 have higher reflectivity in the wavelength band of 0.3 μm to 2.5 μm, it is preferable that the refractive index of the filler 3011 in the glue layer 301 is greater than or equal to 1.6, such as calcium carbonate having a refractive index of greater than or equal to 1.6, barium sulfate having a refractive index of greater than or equal to 1.6, titanium oxide having a refractive index of greater than or equal to 1.6, and zinc oxide having a refractive index of greater than or equal to 1.6.
It is to be understood that the present invention is not particularly limited to the shape of the filler 3011 in the adhesive layer 301, and in one embodiment, the filler 3011 in the adhesive layer 301 may have any one of a burr shape, a rod shape, a spherical shape, an ellipsoidal shape, or an irregular shape.
In one embodiment, the thickness of the glue layer 301 is 2 μm to 10 μm, including but not limited to 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, or 10 μm.
In the present embodiment, the silver film 20, the adhesive layer 301 and the white sub-reflective layer 302 cooperate with each other, so that the reflectance of the reflective silver film in the wavelength band of 0.3 μm to 2.5 μm can exceed 94.1%.
To sum up, the utility model provides a reflection silver membrane has high reflectivity, and be applied to building field, solar photovoltaic field, commodity circulation warehousing and transportation field, high-tech agricultural field, outdoor products field, electron electric power field or aerospace field that can be fine.
The field of construction, such as: the product is used for the outer surface of building glass, the outer surface of building roofs and outer walls, the outer surface of waterproof coiled materials for buildings, the outer surface of steel plates and steel tiles for buildings and the like.
Solar photovoltaic fields, such as: the solar energy concentrating solar cell is used for solar photo-thermal power generation, solar focusing heat collectors and the like.
Logistics storage and transportation fields, such as: for the outer surface of a roof glass of a vehicle, for the outer surface of a compartment of a vehicle, etc.
High-tech agricultural fields such as: used for the outer surface of the agricultural greenhouse and the like.
Outdoor applications, such as: the coating is used for the outer surfaces of outdoor articles such as hats, clothes, tents, sunshade umbrellas, car covers, car canopies and the like.
The field of electronic power, such as: for the outer surface of an electric power cabinet, etc.
The aerospace sector, such as: the heat dissipation surface is used for the outer surface of the heat dissipation surface of the spacecraft and the like.
The present invention provides a reflective silver film, which is described in detail with reference to specific examples and comparative examples.
In table 1, examples 1 to 3 are the reflective silver films of the first embodiment provided by the present invention.
Examples 4-6 in table 2 are reflective silver films of a second embodiment provided by the present invention.
Examples 7 to 9 in table 3 are reflective silver films according to a third embodiment of the present invention.
The reflective silver films provided in comparative examples 1 to 4 in table 4 include a base film, a silver film, a transparent adhesive layer, and a transparent film, which are laminated.
The test criteria for optical performance in tables 1-4 are as follows:
reflectance in the 0.3 μm-2.5 μm band (whole band): the method is carried out according to the specification of 6.4 in JG/T235-2014.
TABLE 1
TABLE 2
TABLE 3
TABLE 4
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but it can not be understood therefrom that the indication of the scope of the utility model patent is that for those skilled in the art, without departing from the concept of the present invention, several variations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A reflective silver film is characterized by comprising a base film, and a silver film and a white reflective layer which are sequentially stacked on the base film; wherein the thickness of the silver film is 50nm-120nm, and the reflectivity of the white reflecting layer in a wave band of 0.3-2.5 μm is greater than or equal to 50%.
2. The reflective silver film of claim 1, wherein the white reflective layer has a thickness of 10 μm to 100 μm.
3. The reflective silver film of claim 1, wherein said white reflective layer comprises a subbing layer and a white sub-reflective layer, said subbing layer being disposed between said silver film and said white sub-reflective layer.
4. The reflective silver film of claim 3, wherein said white sub-reflective layer has a reflectivity of 50% to 95% in the 0.3 μm to 2.5 μm wavelength band.
5. The reflective silver film of claim 4, wherein the white sub-reflective layer is a white sub-reflective layer made of a thermoplastic resin.
6. The reflective silver film of claim 3, wherein the thickness of the white sub-reflective layer is 10 μm to 100 μm.
7. The reflective silver film according to claim 3, wherein the adhesive layer is a polyurethane-based adhesive layer, an acrylic-based adhesive layer, a rubber-based adhesive layer, a silicone-based adhesive layer, a polyester-based adhesive layer, a polyamide-based adhesive layer, an epoxy-based adhesive layer, a polyvinyl acetate-based adhesive layer, a vinyl alkyl ether-based adhesive layer, or a fluorine-containing adhesive layer.
8. The reflective silver film of claim 3, wherein said subbing layer is a thermoplastic resin layer.
9. The film of claim 8, wherein the glue layer has a reflectivity of 20% to 50% in the 0.3 μm to 2.5 μm wavelength band.
10. The reflective silver film of claim 3, wherein said glue layer has a thickness of 2 μm to 10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223252374.1U CN218630257U (en) | 2022-12-06 | 2022-12-06 | Reflective silver film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223252374.1U CN218630257U (en) | 2022-12-06 | 2022-12-06 | Reflective silver film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218630257U true CN218630257U (en) | 2023-03-14 |
Family
ID=85453688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223252374.1U Active CN218630257U (en) | 2022-12-06 | 2022-12-06 | Reflective silver film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218630257U (en) |
-
2022
- 2022-12-06 CN CN202223252374.1U patent/CN218630257U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI565918B (en) | Solar photovoltaic-thermal system | |
| US5288337A (en) | Photovoltaic module with specular reflector | |
| EP2061092A1 (en) | Thin film planar solar concentrator/collector | |
| US20140083482A1 (en) | Architectural article with photovoltaic cell and visible light-transmitting reflector | |
| JP2011521289A (en) | Sunlight collecting mirror | |
| KR20120125460A (en) | Solar cell back sheet film and method for producing the same | |
| EP2693101A1 (en) | Solar lighting system | |
| CN110274326A (en) | A kind of radiation refrigerator and preparation method thereof in the daytime | |
| CN103543483A (en) | Flexible reflector film of sunlight reflector | |
| CN213291633U (en) | Radiation refrigerating film | |
| JP2011129850A (en) | Back sheet for solar cell, and solar cell module using the same | |
| JP2011103428A (en) | Back sheet for solar cell, and solar cell module using the same | |
| CN218630257U (en) | Reflective silver film | |
| CN210575985U (en) | Black component | |
| JP2000141531A (en) | Solar battery cover film and its manufacture, and solar battery module using the cover film | |
| WO2023155939A2 (en) | Heat-reducing reflection device, heat-reducing-type photovoltaic power generation device, and apparatus | |
| CN209150134U (en) | A kind of reflective membrane improving photovoltaic conversion efficiency | |
| WO2014180019A1 (en) | Solar module | |
| CN216597610U (en) | High resistant photovoltaic sunshading board of waiting | |
| JP2023053327A (en) | Rear face protective sheet for solar cell module | |
| CN203551810U (en) | Flexible reflector film of sunlight reflector | |
| CN219136684U (en) | Car cover film | |
| CN210110808U (en) | Battery backboard | |
| CN214226926U (en) | High-temperature cross-linked gap reflective film | |
| CN218333822U (en) | Novel photovoltaic backboard and photovoltaic module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |