CN210572842U - Composite silver reflective film - Google Patents
Composite silver reflective film Download PDFInfo
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- CN210572842U CN210572842U CN201921860835.9U CN201921860835U CN210572842U CN 210572842 U CN210572842 U CN 210572842U CN 201921860835 U CN201921860835 U CN 201921860835U CN 210572842 U CN210572842 U CN 210572842U
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Abstract
The utility model discloses a compound silver reflectance coating, including flexible substrate layer, first titanium nitride protective layer, silver reflective layer, the second titanium nitride protective layer that stacks gradually the setting. Titanium nitride is used as a protective layer, so that the oxidation resistance of the composite silver reflective film is improved, and the titanium nitride is used as a non-metallic ceramic material, so that the absorption of light is less, and the influence on the reflective performance of the composite silver reflective film is small; a metal isolation layer is not required to be further arranged between the titanium nitride protection layer and the silver reflection layer, so that the problem of reflectivity reduction caused by the introduction of the metal isolation layer is avoided; the composite silver reflecting film has high binding force of each layer, can adapt to outdoor severe environment, and has wide application field.
Description
Technical Field
The utility model relates to a compound silver reflectance coating.
Background
When preparing a silver reflective film on a flexible substrate, the silver reflective layer needs to be protected to prevent it from being oxidized.
At present, oxides are generally used as barrier films or protective layers, such as silicon oxide, aluminum oxide and the like, but because the oxide protective layers have oxygen, the silver films are oxidized by the protective layers in the preparation process and the long-term use process in the later period, so that the protective effect is reduced, and the protective mode is mainly used in indoor scenes. In order to solve the problem that the silver reflecting layer is oxidized by the protective layer, a very thin metal isolating layer can be directly added to the silver reflecting layer and the protective layer, but the addition of the metal isolating layer can lead to the absorption enhancement of the composite reflecting film, the reflection is reduced, and the requirement of high reflection of a product cannot be met.
In addition, silicon nitride and the like are adopted as protective layers, and the silicon nitride has high water vapor blocking capacity, but the bonding force between the silicon nitride and the silver reflecting layer is poor, so that the silicon nitride is not suitable for outdoor use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be applicable to outdoor, high anti-oxidant compound silver reflectance coating.
In order to achieve the above object, the utility model provides a composite silver reflective film, including flexible substrate layer, first titanium nitride protective layer, silver reflective layer, the second titanium nitride protective layer that stacks gradually the setting.
In some of these embodiments, the flexible substrate layer is a PET layer or a PETG layer.
In some embodiments, the first titanium nitride protective layer has a thickness of 1 μm to 30 μm, and the second titanium nitride protective layer has a thickness of 1 μm to 30 μm. Preferably, the thickness of the first titanium nitride protective layer is 5-15 μm, and the thickness of the second titanium nitride protective layer is 15-30 μm.
In some embodiments, the thickness of the silver reflecting layer is 100 μm to 200 μm.
In some of these embodiments, the flexible substrate layer has a roughness greater than 150 nm.
Compared with the prior art, the beneficial effects of the utility model reside in that: titanium nitride is used as a protective layer, so that the oxidation resistance of the composite silver reflective film is improved, and the titanium nitride is used as a non-metallic ceramic material, so that the absorption of light is less, and the influence on the reflective performance of the composite silver reflective film is small; a metal isolation layer is not required to be further arranged between the titanium nitride protection layer and the silver reflection layer, so that the problem of reflectivity reduction caused by the introduction of the metal isolation layer is avoided; the composite silver reflecting film has high binding force of each layer, can adapt to outdoor severe environment, and has wide application field.
Drawings
Fig. 1 is a schematic view of an embodiment of the composite silver reflective film of the present invention;
in the figure: 1. a flexible substrate layer; 2. a first titanium nitride protective layer; 3. a silver reflective layer; 4. a second titanium nitride protective layer.
Detailed Description
The present invention will be further described with reference to the following detailed description, and it should be noted that, in the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form a new embodiment.
In the description of the present invention, it should be noted that, for the orientation words, there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicating the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be construed as limiting the specific scope of the present invention.
It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, the utility model provides a composite silver reflective film, including flexible substrate layer 1, first titanium nitride protective layer 2, silver reflective layer 3 and the second titanium nitride protective layer 4 that stack gradually the setting.
The utility model discloses a titanium nitride replaces traditional oxide as silver barrier film and protective layer, and first titanium nitride protective layer 2, second titanium nitride protective layer 4 all can not lead to the oxidation of silver reflecting layer 3 in preparation process and long-term use, are favorable to improving compound silver reflecting film's ageing resistance. The compact film layer formed by the titanium nitride can effectively isolate oxygen and water vapor in the air, and the composite silver reflecting film taking the titanium nitride as a protective layer has excellent oxidation resistance.
The lattice constant of titanium nitride is 0.42nm, the lattice constant of silver is 0.41nm, the internal stress between the titanium nitride protective layer and the silver reflecting layer is small during film forming, and the binding force is high. Further, the thermal expansion coefficient of titanium nitride was 9.35E-6Which is close to the coefficient of thermal expansion of most flexible substrates, e.g., the coefficient of thermal expansion of the common PET, PETG, etc. substrates is 6E-6Therefore, the first titanium nitride protective layer 2 and the flexible substrate layer 1 have strong bonding force. That is, the adhesion of the first titanium nitride protective layer 2 to the flexible base material layer 1 is high, the adhesion of the silver reflective layer 3 to the first titanium nitride protective layer 2 is high, and the adhesion of the second titanium nitride protective layer 4 to the silver reflective layer 3 is high.
Titanium nitride is used as a non-metallic ceramic material, and the absorption of light is small, so that the influence of the titanium nitride on the reflectivity of the composite silver reflecting film is small when the titanium nitride is used as a protective layer. The reflectivity of the composite silver reflecting film of the utility model can reach about 93 percent.
In some embodiments, the flexible substrate layer 1 is a PET layer or a PETG layer.
In some embodiments, the first titanium nitride protective layer 2 has a thickness of 1 μm to 30 μm, and the second titanium nitride protective layer 4 has a thickness of 1 μm to 30 μm. Preferably, the thickness of the first titanium nitride protective layer 2 is 5 μm to 15 μm, and the thickness of the second titanium nitride protective layer 4 is 15 μm to 30 μm.
In some embodiments, the silver reflective layer has a thickness of 100 μm to 200 μm.
In some embodiments, the roughness of the flexible substrate layer 1 is greater than 150 nm. The roughness of the flexible substrate layer 1 is larger than 150nm, so that the adhesive force of the protective layer on the flexible substrate layer can be effectively improved.
[ examples ] A method for producing a compound
The utility model provides a compound silver reflecting film, including the flexible substrate layer of PET, first titanium nitride protective layer, silver reflecting layer and the second titanium nitride protective layer that stack gradually the setting.
[ COMPARATIVE EXAMPLES ]
The utility model provides a compound silver-colored reflectance coating, including the flexible substrate layer of PET, first titanium oxide protective layer, silver-colored reflectance coating and the second titanium dioxide protective layer that stacks gradually the setting.
The thicknesses of the PET flexible base material layer and the silver reflecting layer in the comparative example are the same as those of the PET flexible base material layer and the silver reflecting layer in the example, the thickness of the first titanium oxide protective layer is the same as that of the first titanium nitride protective layer, and the thickness of the second titanium oxide protective layer is the same as that of the second titanium nitride protective layer.
The titanium nitride or titanium oxide in the examples and comparative examples were tested for adhesion to the substrate and aging resistance, and the results were as follows:
| adhesion force | Oxidation resistance | |
| Examples | 7N | Yellowing does not occur under high temperature and high humidity environment (60 ℃, 90 percent RH) for 15 days |
| Comparative example | 2N | Yellowing occurred in a high-temperature and high-humidity environment (60 ℃ C., 90% RH) for 3 days |
The basic principles, main features and advantages of the present invention have been described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The composite silver reflecting film is characterized by comprising a flexible substrate layer, a first titanium nitride protective layer, a silver reflecting layer and a second titanium nitride protective layer which are sequentially stacked.
2. The composite silver reflective film according to claim 1, wherein the flexible substrate layer is a PET layer or a PETG layer.
3. The composite silver reflective film according to claim 1, wherein the first titanium nitride protective layer has a thickness of 1 μm to 30 μm, and the second titanium nitride protective layer has a thickness of 1 μm to 30 μm.
4. The composite silver reflective film according to claim 3, wherein the first titanium nitride layer has a thickness of 5 μm to 15 μm, and the second titanium nitride layer has a thickness of 15 μm to 30 μm.
5. The composite silver reflective film according to claim 1, wherein the thickness of the silver reflective layer is 100 to 200 μm.
6. The composite silver reflective film of claim 1, wherein the flexible substrate layer has a roughness greater than 150 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921860835.9U CN210572842U (en) | 2019-10-31 | 2019-10-31 | Composite silver reflective film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921860835.9U CN210572842U (en) | 2019-10-31 | 2019-10-31 | Composite silver reflective film |
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| CN210572842U true CN210572842U (en) | 2020-05-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111730920A (en) * | 2020-07-30 | 2020-10-02 | 宁波瑞凌新能源科技有限公司 | Functional membrane structure, preparation method thereof, refrigeration membrane and refrigeration product |
| CN112812701A (en) * | 2021-02-23 | 2021-05-18 | 深圳市志凌伟业光电有限公司 | Silver reflective film and method for manufacturing same |
-
2019
- 2019-10-31 CN CN201921860835.9U patent/CN210572842U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111730920A (en) * | 2020-07-30 | 2020-10-02 | 宁波瑞凌新能源科技有限公司 | Functional membrane structure, preparation method thereof, refrigeration membrane and refrigeration product |
| CN111730920B (en) * | 2020-07-30 | 2020-11-17 | 宁波瑞凌新能源科技有限公司 | Functional membrane structure, preparation method thereof, refrigeration membrane and refrigeration product |
| CN112812701A (en) * | 2021-02-23 | 2021-05-18 | 深圳市志凌伟业光电有限公司 | Silver reflective film and method for manufacturing same |
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