CN213291635U - Substrate for transparent back plate with multilayer structure and corresponding back plate - Google Patents
Substrate for transparent back plate with multilayer structure and corresponding back plate Download PDFInfo
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- CN213291635U CN213291635U CN202021383398.9U CN202021383398U CN213291635U CN 213291635 U CN213291635 U CN 213291635U CN 202021383398 U CN202021383398 U CN 202021383398U CN 213291635 U CN213291635 U CN 213291635U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model relates to a substrate for multilayer structure transparent backplate, this substrate include first resistant layer of waiting, first bond line, the resistant layer of waiting of second, the resistant layer of second bond line and the resistant layer of waiting of third in proper order, first resistant layer of waiting and the resistant layer of third be the resistant layer of waiting of PET, the resistant layer of second be the resistant layer of waiting of PCT, first resistant layer of waiting, the resistant layer of second and the resistant layer of third all make through biaxial stretching. The utility model discloses still relate to corresponding backplate. The base material utilizes good ultraviolet aging resistance of PET resin and good hydrolysis resistance of PCT resin, and the PCT is used as a core layer to support the outer PET layer. The transparent substrate for a back sheet may be a part of a back sheet or may be used as a back sheet directly. The transparent glass has good transparency, low cost and good comprehensive performance of ultraviolet aging resistance and hydrolysis resistance.
Description
Technical Field
The utility model relates to a solar PV modules technical field specifically indicates a multilayer structure's transparent substrate for backplate and corresponding backplate.
Background
With increasingly poor international traditional energy, global demand for novel energy becomes the focus of world attention, and solar energy is used as the novel energy, is inexhaustible and has the characteristics of cleanness, no pollution, safety, no public nuisance and the like, is concerned by the global and realizes the industrialization of energy photovoltaic conversion.
In the field of photovoltaic power generation, the development trend of the technology is high-efficiency power generation of a photovoltaic module, and due to the fact that double-sided high-efficiency solar cells are arranged, the power generation efficiency of the module is greatly improved. Among traditional components, the most common one currently used in China is a back plate of a TPT (thermoplastic vulcanizate) and TPE (thermoplastic elastomer) type structure produced by DuPont, which is composed of an upper fluorine film layer and a lower fluorine film layer or an upper fluorine film layer, a lower PE (polyethylene) film layer and a middle polyester layer
(PET) is compounded. And the appearance of dual glass assembly has expanded the application of two-sided high-efficient battery in the photovoltaic power generation field for the two-sided electricity generation of photovoltaic becomes possible. But the whole weight of dual glass assembly is bigger, and the fragmentation rate is than higher, and the problem such as traditional lamination inefficiency has restricted its application to a certain extent.
Therefore, the transparent back sheet is capable of well avoiding the problems, and the transparent back sheet not only meets the mechanical properties, weather resistance and water vapor transmittance of the conventional back sheet, but also needs to ensure higher light transmittance, lower haze, excellent ultraviolet aging resistance and the like. The transparent back plate has unique advantages when used in environments requiring strict anti-glare, such as photovoltaic building integration, glass curtain walls, greenhouse garages, highways, railways, airports and the like.
The conventional transparent back plate is mainly formed by compounding a transparent double-sided fluorine-containing film or coating, a transparent PET (polyethylene terephthalate) base layer and anti-ultraviolet glue, the cost of the transparent raw materials of the back plate is high, the prepared back plate is low in transparency and high in haze, and the power generation efficiency of the solar cell is influenced. Therefore, a backboard with good transparency, low cost, ultraviolet aging resistance and hydrolysis resistance becomes a hot spot of current research.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multilayer structure's substrate and corresponding backplate for transparent backplate, this backplate utilize the good ultraviolet ageing resistance ability of PET resin and the good hydrolytic resistance of PCT resin, support the layer of nai time that the outside was made with PET resin with PCT resin as the core layer. The transparent glass has good transparency, low cost and good comprehensive performance of ultraviolet aging resistance and hydrolysis resistance.
The purpose of the utility model is mainly realized through the following technical scheme:
the substrate for the transparent backboard with the multilayer structure sequentially comprises a first weather-resistant layer, a first bonding layer, a second weather-resistant layer, a second bonding layer and a third weather-resistant layer, wherein the first weather-resistant layer and the third weather-resistant layer are PET weather-resistant layers, the second weather-resistant layer is a PCT weather-resistant layer, and the first weather-resistant layer, the second weather-resistant layer and the third weather-resistant layer are all prepared by biaxial stretching.
The utility model provides a substrate can directly regard as the backplate also can be the partly of backplate.
The first weather-resistant layer, the second weather-resistant layer and the third weather-resistant layer are subjected to modification treatment, the ageing resistance is excellent, the substrate is formed by bonding the first bonding layer and the second bonding layer, and the total thickness of the substrate is 86-610 mu m.
Preferably, the thickness of the first weather-resistant layer and the third weather-resistant layer is 30-200 μm, the thickness of the first adhesive layer and the second adhesive layer is 3-30 μm, and the thickness of the second weather-resistant layer is 20-150 μm.
The utility model has the advantages that:
adopt the utility model discloses a multilayer structure's substrate and corresponding backplate for transparent backplate, this backplate utilize the good ultraviolet ageing resistance ability of PET resin and the good hydrolytic resistance of PCT resin, support the weather resistant layer that the outside was made with PET resin with PCT resin as the core layer. The transparent substrate for a back sheet may be a part of a back sheet or may be used as a back sheet directly. The transparent glass has good transparency, low cost and good comprehensive performance of ultraviolet aging resistance and hydrolysis resistance.
Drawings
Fig. 1 is a schematic structural view of the substrate for transparent back plate of the multi-layer back plate of the present invention.
Reference numerals
1 first weather resistant layer
2 first adhesive layer
3 second weather resistant layer
4 second adhesive layer
5 third weather resistant layer
Detailed Description
The present invention will be described in further detail with reference to embodiments and drawings, but the embodiments of the present invention are not limited thereto.
The utility model provides a multilayer structure's manufacturing method of substrate for transparent backplate, concrete step is:
and 3, combining the first weather-resistant layer 1, the second weather-resistant layer 3 and the third weather-resistant layer 5 prepared in the steps 1 and 2 through an adhesive to obtain the substrate for the transparent back plate with the multilayer structure shown in the figure 1.
Specific embodiments of each example are as follows
Table-multi-layer structure base material each layer thickness table for transparent back plate
Adopt the utility model discloses a multilayer structure's substrate and corresponding backplate for transparent backplate, this backplate utilize the good ultraviolet ageing resistance ability of PET resin and the good hydrolytic resistance of PCT resin, support the weather resistant layer that the outside was made with PET resin with PCT resin as the core layer. The transparent substrate for a back sheet may be a part of a back sheet or may be used as a back sheet directly. The transparent glass has good transparency, low cost and good comprehensive performance of ultraviolet aging resistance and hydrolysis resistance.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (4)
1. A substrate for a multilayer-structure transparent back plate is characterized in that: the base material sequentially comprises a first weather-resistant layer, a first bonding layer, a second weather-resistant layer, a second bonding layer and a third weather-resistant layer, the first weather-resistant layer and the third weather-resistant layer are PET weather-resistant layers, the second weather-resistant layer is a PCT weather-resistant layer, and the first weather-resistant layer, the second weather-resistant layer and the third weather-resistant layer are all prepared by biaxial stretching.
2. The substrate for the transparent back sheet with a multilayer structure according to claim 1, wherein the total thickness of the substrate is 86 to 610 μm.
3. The substrate for a transparent back sheet having a multilayer structure according to claim 1 or 2, wherein the first weather-resistant layer and the third weather-resistant layer have a thickness of 30 to 200 μm, the first adhesive layer and the second adhesive layer have a thickness of 3 to 30 μm, and the second weather-resistant layer has a thickness of 20 to 150 μm.
4. A multilayer-structured transparent backsheet, comprising the substrate for a multilayer-structured transparent backsheet according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021383398.9U CN213291635U (en) | 2020-07-14 | 2020-07-14 | Substrate for transparent back plate with multilayer structure and corresponding back plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021383398.9U CN213291635U (en) | 2020-07-14 | 2020-07-14 | Substrate for transparent back plate with multilayer structure and corresponding back plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213291635U true CN213291635U (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021383398.9U Active CN213291635U (en) | 2020-07-14 | 2020-07-14 | Substrate for transparent back plate with multilayer structure and corresponding back plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113927986A (en) * | 2020-07-14 | 2022-01-14 | 上海海优威应用材料技术有限公司 | Transparent photovoltaic back plate with multilayer structure |
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2020
- 2020-07-14 CN CN202021383398.9U patent/CN213291635U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113927986A (en) * | 2020-07-14 | 2022-01-14 | 上海海优威应用材料技术有限公司 | Transparent photovoltaic back plate with multilayer structure |
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