Adhesive aging performance testing method and adhesive aging performance testing sample piece

Abstract

The invention relates to an adhesive aging performance test method and an adhesive aging performance test sample piece. The method for testing the aging performance of the adhesive comprises the following steps that a first adhesive film layer, a first isolation layer, an adhesive layer, a second isolation layer, a second adhesive film layer and a cover plate which are sequentially arranged in a stacked mode are formed on the surface of a back plate, a middleware is obtained, materials of the adhesive layer comprise an adhesive, and materials of the second isolation layer comprise the adhesive. The adhesive layer is not adhered to the first isolation layer and the second isolation layer; the middleware is laminated; the periphery of the laminated middleware is packaged through a packaging piece, so that the adhesive layer is located in an area jointly defined by the packaging piece, the back plate and the cover plate, and an adhesive aging performance test sample piece is obtained; carrying out aging treatment on the adhesive aging performance test sample piece; taking out the adhesive layer from the aged adhesive aging performance test sample piece; and testing the adhesive layer.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a method for testing the aging performance of adhesives and a sample for testing the aging performance of adhesives. Background Technology

[0002] The core of OBB (Optical Gridless) technology lies in abandoning the traditional grid design on solar cells and instead employing innovative ribbon connection schemes or other efficient current conduction mechanisms to achieve current extraction during the photovoltaic module integration stage. OBB technology can reduce silver paste consumption, decrease the number of recombination centers on the cell surface caused by silver paste, promote an increase in light-receiving area, and improve conversion efficiency.

[0003] Compared to traditional solar cell modules, OBB modules typically use adhesives to fix the solder ribbons. There are two main traditional methods for evaluating the aging resistance of adhesives. Method 1: Evaluate the aging resistance of the photovoltaic module to assess the aging performance of the adhesive. However, this method is difficult to accurately determine whether the adhesive has failed. Method 2: Directly test the aging resistance of the exposed adhesive sheet. However, directly exposing the adhesive sheet to air makes it prone to oxidation, accelerating the adhesive failure process. This does not reflect actual usage conditions and is also difficult to accurately determine the aging resistance of the adhesive under real-world aging conditions. Summary of the Invention

[0004] Therefore, it is necessary to provide a method for testing the aging performance of adhesives and a test sample for adhesive aging performance. The adhesive aging performance testing method of this application can accurately test the aging performance of adhesives to determine their aging performance under actual aging conditions.

[0005] In a first aspect, this application provides a method for testing the aging performance of adhesives, comprising the following steps:

[0006] A first adhesive film layer, a first isolation layer, an adhesive layer, a second isolation layer, a second adhesive film layer, and a cover plate are sequentially stacked on the surface of a back plate to obtain an intermediate part. The adhesive layer is made of the adhesive to be tested, and the adhesive layer is not bonded to either the first isolation layer or the second isolation layer.

[0007] The intermediate component is laminated;

[0008] The intermediate component after lamination is encapsulated by an encapsulation component, so that the adhesive layer is located in the area formed by the encapsulation component, the back plate and the cover plate, thereby obtaining an adhesive aging performance test sample.

[0009] The adhesive aging performance test samples were subjected to aging treatment;

[0010] The adhesive layer was removed from the adhesive aging performance test sample after the aging treatment.

[0011] The adhesive layer was tested.

[0012] In some embodiments, encapsulating the periphery of the laminated intermediate using an encapsulation component includes the following steps:

[0013] The package is simultaneously attached to the side of the back plate and the side of the cover plate;

[0014] The encapsulation component covers the gap between the cover plate and the back plate.

[0015] In some embodiments, the encapsulation includes aluminum foil tape.

[0016] In some embodiments, the width of the package is 10mm to 20mm.

[0017] In some embodiments, the orthographic projection of the adhesive layer onto the surface of the first isolation layer is located inside the first isolation layer; the orthographic projection of the adhesive layer onto the surface of the second isolation layer is located inside the second isolation layer.

[0018] In some embodiments, the minimum distance between the adhesive layer and the edge of the first isolation layer is 10mm to 30mm; the minimum distance between the adhesive layer and the edge of the second isolation layer is 10mm to 30mm.

[0019] In some embodiments, the orthographic projection of the first isolation layer onto the surface of the back plate is located inside the back plate; the orthographic projection of the second isolation layer onto the surface of the cover plate is located inside the cover plate.

[0020] In some embodiments, the minimum distance between the adhesive layer and the edge of the back plate is 50mm to 100mm; the minimum distance between the adhesive layer and the edge of the cover plate is 50mm to 100mm.

[0021] In some embodiments, the orthographic projection of the first adhesive film layer onto the surface of the first insulating layer is located inside the first insulating layer; the orthographic projection of the second adhesive film layer onto the surface of the second insulating layer is located inside the second insulating layer.

[0022] In some embodiments, the aging treatment conditions include any one of the following:

[0023] (1) 120 kWh of ultraviolet aging treatment;

[0024] (2) Moist heat aging treatment at 85℃ and 85% humidity for 1000h;

[0025] (3) Thermo-oxidative aging treatment at 150℃ for 200h.

[0026] In some embodiments, testing the adhesive layer includes the following steps:

[0027] The adhesive layer is tested. If the yellowing index of the adhesive layer is <5, the average transmittance in the wavelength range of 280nm~1100nm is ≥80%, and 80%≤hardness retention rate≤120%, then the adhesive is deemed qualified; otherwise, the adhesive is deemed unqualified.

[0028] Secondly, this application provides an adhesive aging performance test sample, including an intermediate component formed by a back plate, a first adhesive film layer, a first isolation layer, an adhesive layer, a second isolation layer, a second adhesive film layer and a cover plate stacked sequentially, wherein the material of the adhesive layer includes adhesive, and the adhesive layer is not bonded to the first isolation layer and the second isolation layer;

[0029] The adhesive aging performance test sample also includes a packaging component, which encapsulates the intermediate component around its perimeter. The adhesive layer is located within the area formed by the packaging component, the back plate, and the cover plate.

[0030] In the aforementioned adhesive aging performance testing method, a first adhesive film layer, a first isolation layer, an adhesive layer, a second isolation layer, a second adhesive film layer, and a cover plate are sequentially stacked on the surface of the backsheet. An encapsulation component is used to encapsulate the perimeter of the laminated intermediate component, ensuring the adhesive layer is located within the area enclosed by the encapsulation component, the backsheet, and the cover plate. The resulting adhesive aging performance test sample can simulate the aging conditions of the adhesive in photovoltaic modules. Testing this adhesive aging performance test sample allows for accurate testing of the adhesive's aging performance under actual aging conditions. By isolating the adhesive layer and the first adhesive film layer with the first isolation layer, and the adhesive layer and the second adhesive film layer with the second isolation layer, the adhesive can be removed from the adhesive aging performance test sample after aging treatment, allowing for testing of the adhesive's performance. The adhesive aging performance testing method of this application can accurately test the aging performance of adhesives to determine their aging performance under actual aging conditions. Attached Figure Description

[0031] Figure 1 This is a partial exploded view of the adhesive aging performance test sample provided in an embodiment of this application;

[0032] Figure 2This is a schematic diagram of the structure of an adhesive aging performance test sample provided in an embodiment of this application;

[0033] Figure 3 This is a flowchart illustrating a method for testing the aging performance of adhesives according to another embodiment of this application.

[0034] Explanation of reference numerals in the attached figures

[0035] 10. Backplate; 20. First adhesive film layer; 30. First release layer; 40. Adhesive layer; 50. Second release layer; 60. Second adhesive film layer; 70. Cover plate; 80. Encapsulation component. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, a detailed description of specific embodiments of this application is provided below. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] Unless otherwise defined, 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 application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] Reference Figures 1-2 As shown, one embodiment of this application provides a method for testing the aging performance of adhesives, including the following steps:

[0042] A first adhesive film layer 20, a first isolation layer 30, an adhesive layer 40, a second isolation layer 50, a second adhesive film layer 60, and a cover plate 70 are sequentially stacked on the surface of the back plate 10 to obtain an intermediate part. The adhesive layer 40 is made of adhesive, and the adhesive layer 40 is not bonded to the first isolation layer 30 and the second isolation layer 50.

[0043] Laminate the middleware;

[0044] The encapsulation component 80 is used to encapsulate the periphery of the laminated intermediate component, so that the adhesive layer 40 is located in the area formed by the encapsulation component 80, the back plate 10 and the cover plate 70, thus obtaining the adhesive aging performance test sample.

[0045] The adhesive aging performance test samples were subjected to aging treatment;

[0046] The adhesive layer 40 was removed from the adhesive aging performance test sample after aging treatment.

[0047] The adhesive layer 40 was tested.

[0048] In the above-described adhesive aging performance testing method, a first adhesive film layer 20, a first isolation layer 30, an adhesive layer 40, a second isolation layer 50, a second adhesive film layer 60, and a cover plate 70 are sequentially stacked on the surface of the backsheet 10. An encapsulation component 80 encapsulates the laminated intermediate component, ensuring that the adhesive layer 40 is located within the area enclosed by the encapsulation component 80, the backsheet 10, and the cover plate 70. The resulting adhesive aging performance test sample can simulate the aging conditions of the adhesive in a photovoltaic module. Testing this adhesive aging performance test sample allows for accurate testing of the adhesive's aging performance under actual aging conditions. By isolating the adhesive layer 40 and the first adhesive film layer 20 with the first isolation layer 30, and separating the adhesive layer 40 and the second adhesive film layer 60 with the second isolation layer 50, the adhesive can be removed from the adhesive aging performance test sample after aging treatment, allowing for testing of the adhesive's performance. The adhesive aging performance test method of this application can accurately test the aging performance of adhesives to determine their aging performance under actual aging conditions.

[0049] It is understood that the materials of the first adhesive film layer 20 and the second adhesive film layer 60 can be selected from at least one of the photovoltaic adhesive films commonly used in the art, and are not limited thereto in this application. The materials of the first isolation layer 30 and the second isolation layer 50 can be selected from at least one of the isolation materials commonly used in the art. For example, the first isolation layer 30 and the second isolation layer 50 can be release paper.

[0050] In some embodiments, the back panel 10 is a glass back panel 10.

[0051] In some embodiments, the cover plate 70 is a glass cover plate 70.

[0052] In some embodiments, encapsulating the periphery of the laminated intermediate with the encapsulation member 80 includes the following steps:

[0053] The encapsulation component 80 is simultaneously attached to the side of the back plate 10 and the side of the cover plate 70;

[0054] The encapsulation 80 covers the gap between the cover plate 70 and the back plate 10.

[0055] In some embodiments, the encapsulation 80 includes aluminum foil tape.

[0056] By simultaneously attaching aluminum foil tape to the sides of the backplate 10 and the cover plate 70, and covering the gap between the cover plate 70 and the backplate 10, the intermediate component is encapsulated. This not only simulates the aging conditions of adhesives in photovoltaic modules, but also makes it easy to remove the adhesives from the aging performance test samples after aging treatment.

[0057] In some embodiments, the width of the package 80 is 10mm to 20mm.

[0058] It is understood that the width of the encapsulation 80 refers to its width along the stacking direction of the intermediate component, i.e., the thickness direction. Within the aforementioned width range of the encapsulation 80, the encapsulation 80 provides good encapsulation of the intermediate component and good barrier effect against water and oxygen, thus effectively simulating the actual aging conditions of adhesives in photovoltaic modules. Optionally, the width of the encapsulation 80 can be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, or 20mm. Alternatively, the width of the encapsulation 80 can also be within any two of the aforementioned widths.

[0059] In some embodiments, the orthographic projection of the adhesive layer 40 onto the surface of the first insulating layer 30 is located inside the first insulating layer 30; the orthographic projection of the adhesive layer 40 onto the surface of the second insulating layer 50 is located inside the second insulating layer 50.

[0060] It is understandable that the orthographic projection of the adhesive layer 40 onto the surface of the first isolation layer 30 being located inside the first isolation layer 30 means that the area of ​​the adhesive layer 40 is smaller than the area of ​​the first isolation layer 30, and the adhesive layer 40 is disposed within the first isolation layer 30. Similarly, the orthographic projection of the adhesive layer 40 onto the surface of the second isolation layer 50 being located inside the second isolation layer 50 means that the area of ​​the adhesive layer 40 is smaller than the area of ​​the second isolation layer 50, and the adhesive layer 40 is disposed within the second isolation layer 50. In other words, both the first isolation layer 30 and the second isolation layer 50 completely cover the adhesive layer 40, which reduces the risk of the adhesive layer 40 adhering to the first adhesive film layer 20 or the second adhesive film layer 60 after lamination and aging treatment, and facilitates the removal of the adhesive layer 40 after aging treatment.

[0061] In some embodiments, the minimum distance between the edge of the adhesive layer 40 and the edge of the first isolation layer 30 is 10mm to 30mm; the minimum distance between the edge of the adhesive layer 40 and the edge of the second isolation layer 50 is 10mm to 30mm.

[0062] Within the minimum distance range between the edges of the adhesive layer 40 and the first release layer 30, the risk of adhesion between the adhesive layer 40 and the first adhesive film layer 20 or the second adhesive film layer 60 after lamination and aging treatment can be reduced, facilitating the removal of the adhesive layer 40 after aging treatment. Optionally, the minimum distance between the edges of the adhesive layer 40 and the first release layer 30 is 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, or 30mm. Alternatively, the minimum distance between the edges of the adhesive layer 40 and the first release layer 30 can also be within the range of any two of the above distances.

[0063] Within the minimum distance range between the edges of the adhesive layer 40 and the second release layer 50, the risk of adhesion between the adhesive layer 40 and the first adhesive film layer 20 or the second adhesive film layer 60 after lamination and aging treatment can be reduced, facilitating the removal of the adhesive layer 40 after aging treatment. Optionally, the minimum distance between the edges of the adhesive layer 40 and the second release layer 50 is 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, or 30mm. Alternatively, the minimum distance between the edges of the adhesive layer 40 and the second release layer 50 can also be within the range of any two of the above distances.

[0064] In some embodiments, the adhesive layer 40, the first isolation layer 30, and the second isolation layer 50 are all square.

[0065] In some embodiments, the orthographic projection of the first isolation layer 30 onto the surface of the back plate 10 is located inside the back plate 10; the orthographic projection of the second isolation layer 50 onto the surface of the cover plate 70 is located inside the cover plate 70.

[0066] In some embodiments, the minimum distance between the adhesive layer 40 and the edge of the back plate 10 is 50mm to 100mm; the minimum distance between the adhesive layer 40 and the edge of the cover plate 70 is 50mm to 100mm.

[0067] Within the minimum distance range between the adhesive layer 40 and the edge of the backsheet 10, the adhesive aging performance test specimen can effectively simulate the actual aging conditions of the adhesive in the photovoltaic module. Optionally, the minimum distance between the adhesive layer 40 and the edge of the backsheet 10 can be 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, or 100mm. Alternatively, the minimum distance between the adhesive layer 40 and the edge of the backsheet 10 can also be within the range of any two of the above distances.

[0068] Within the minimum distance range between the edges of the adhesive layer 40 and the cover plate 70, the adhesive aging performance test specimen can effectively simulate the actual aging conditions of the adhesive in photovoltaic modules. Optionally, the minimum distance between the edges of the adhesive layer 40 and the cover plate 70 can be 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, or 100mm. Alternatively, the minimum distance between the edges of the adhesive layer 40 and the cover plate 70 can also be within any two of the above-mentioned distances.

[0069] In some embodiments, the orthographic projection of the first adhesive film layer 20 onto the surface of the first insulating layer 30 is located inside the first insulating layer 30; the orthographic projection of the second adhesive film layer 60 onto the surface of the second insulating layer 50 is located inside the second insulating layer 50.

[0070] It is understandable that the orthographic projection of the first adhesive layer 20 onto the surface of the first release layer 30 being located inside the first release layer 30 means that the area of ​​the first adhesive layer 20 is smaller than the area of ​​the first release layer 30, and the first adhesive layer 20 is disposed within the first release layer 30. Similarly, the orthographic projection of the second adhesive layer 60 onto the surface of the second release layer 50 being located inside the second release layer 50 means that the area of ​​the second adhesive layer 60 is smaller than the area of ​​the second release layer 50, and the second adhesive layer 60 is disposed within the second release layer 50. That is, the first release layer 30 completely covers the first adhesive layer 20, and the second release layer 50 completely covers the second adhesive layer 60. This reduces the risk of the first adhesive layer 20 and the second adhesive layer 60 adhering to each other after lamination and aging treatment, and facilitates the removal of the adhesive layer 40 after aging treatment.

[0071] In some embodiments, the aging treatment conditions include any one of the following:

[0072] (1) 120 kWh of ultraviolet aging treatment;

[0073] (2) Moist heat aging treatment at 85℃ and 85% humidity for 1000h;

[0074] (3) Thermo-oxidative aging treatment at 150℃ for 200h.

[0075] It is understood that when conducting aging performance tests on an adhesive to be tested, multiple adhesive aging performance test specimens can be prepared using the adhesive to be tested, and the above-mentioned aging treatment can be performed on different adhesive aging performance test specimens respectively. In some embodiments, testing the adhesive layer 40 includes the following steps:

[0076] The adhesive layer 40 is tested. If the yellowing index of the adhesive layer 40 is <5, the average transmittance in the wavelength range of 280nm~1100nm is ≥80%, and 80%≤hardness retention rate≤120%, then the adhesive is considered qualified; otherwise, the adhesive is considered unqualified.

[0077] For example, if the yellowing index of adhesive layer 40 is <4.5, the average transmittance in the wavelength range of 280nm~1100nm is ≥82%, and 82% ≤ hardness retention rate ≤118%, then the adhesive is considered qualified; otherwise, the adhesive is considered unqualified. Alternatively, if the yellowing index of adhesive layer 40 is <4, the average transmittance in the wavelength range of 280nm~1100nm is ≥84%, and 84% ≤ hardness retention rate ≤116%, then the adhesive is considered qualified; otherwise, the adhesive is considered unqualified. Alternatively, if the yellowing index of adhesive layer 40 is <3.5, the average transmittance in the wavelength range of 280nm~1100nm is ≥86%, and 86% ≤ hardness retention rate ≤114%, then the adhesive is considered qualified; otherwise, the adhesive is considered unqualified. Alternatively, if the yellowing index of adhesive layer 40 is <3, the average transmittance in the wavelength range of 280nm~1100nm is ≥88%, and 88% ≤ hardness retention rate ≤112%, then the adhesive is considered qualified; otherwise, the adhesive is considered unqualified. Alternatively, if the yellowing index of adhesive layer 40 is <2.5, the average transmittance in the wavelength range of 280nm~1100nm is ≥90%, and 90% ≤ hardness retention rate ≤110%, then the adhesive is considered qualified; otherwise, the adhesive is considered unqualified.

[0078] Reference Figure 3 As shown, in some embodiments, the adhesive aging performance test method includes the following steps:

[0079] S10: A first adhesive film layer 20, a first isolation layer 30, an adhesive layer 40, a second isolation layer 50, a second adhesive film layer 60, and a cover plate 70 are sequentially stacked on the surface of the back plate 10 to obtain an intermediate part. The adhesive layer 40 is made of adhesive, and the adhesive layer 40 is not bonded to the first isolation layer 30 and the second isolation layer 50.

[0080] S20: Laminate the intermediate components;

[0081] S30: The encapsulation component 80 is used to encapsulate the periphery of the laminated intermediate component, so that the adhesive layer 40 is located in the area formed by the encapsulation component 80, the back plate 10 and the cover plate 70, and an adhesive aging performance test sample is obtained.

[0082] S40: The adhesive aging performance test sample shall be subjected to aging treatment. The aging treatment conditions include any one of the following conditions: (1) 120 kWh ultraviolet aging treatment; (2) 1000 h of damp heat aging treatment at 85°C and 85% humidity; (3) 200 h of thermo-oxidative aging treatment at 150°C.

[0083] S50: Remove the adhesive layer 40 from the adhesive aging performance test sample after aging treatment;

[0084] S60: Test the adhesive layer 40. If the yellowing index of the adhesive layer 40 is <5, the average transmittance in the wavelength range of 280nm~1100nm is ≥80%, and 80%≤hardness retention rate≤120%, then the adhesive is deemed qualified; otherwise, the adhesive is deemed unqualified.

[0085] Refer again Figure 1 , Figure 2 As shown, another embodiment of this application provides an adhesive aging performance test sample, including an intermediate component formed by a back plate 10, a first adhesive film layer 20, a first isolation layer 30, an adhesive layer 40, a second isolation layer 50, a second adhesive film layer 60 and a cover plate 70 stacked sequentially. The adhesive layer 40 is made of adhesive, and the adhesive layer 40 is not bonded to the first isolation layer 30 and the second isolation layer 50.

[0086] The adhesive aging performance test sample also includes a package 80, which encapsulates the intermediate part around the middle part. The adhesive layer 40 is located in the area formed by the package 80, the back plate 10 and the cover plate 70.

[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims, and the specification and drawings can be used to interpret the content of the claims.

Claims

1. A method for testing the aging performance of adhesives, characterized in that, Includes the following steps: A first adhesive film layer, a first isolation layer, an adhesive layer, a second isolation layer, a second adhesive film layer, and a cover plate are sequentially stacked on the surface of a back plate to obtain an intermediate part. The adhesive layer is made of the adhesive to be tested, and the adhesive layer is not bonded to either the first isolation layer or the second isolation layer. The intermediate component is laminated; The intermediate component after lamination is encapsulated by an encapsulation component, so that the adhesive layer is located in the area formed by the encapsulation component, the back plate and the cover plate, thereby obtaining an adhesive aging performance test sample. The adhesive aging performance test samples were subjected to aging treatment; The adhesive layer was removed from the adhesive aging performance test sample after the aging treatment. The adhesive layer was tested.

2. The method for testing the aging performance of adhesives according to claim 1, characterized in that, Encapsulating the perimeter of the laminated intermediate using an encapsulation component includes the following steps: The package is simultaneously attached to the side of the back plate and the side of the cover plate; The encapsulation component covers the gap between the cover plate and the back plate; and / or, The packaging component includes aluminum foil tape; and / or, The width of the package is 10mm to 20mm.

3. The method for testing the aging performance of adhesives according to claim 1, characterized in that, The orthographic projection of the adhesive layer onto the surface of the first isolation layer is located inside the first isolation layer; the orthographic projection of the adhesive layer onto the surface of the second isolation layer is located inside the second isolation layer.

4. The method for testing the aging performance of adhesives according to claim 3, characterized in that, The minimum distance between the adhesive layer and the edge of the first isolation layer is 10mm to 30mm; the minimum distance between the adhesive layer and the edge of the second isolation layer is 10mm to 30mm.

5. The method for testing the aging performance of adhesives according to claim 3, characterized in that, The orthographic projection of the first isolation layer onto the surface of the back plate is located inside the back plate; the orthographic projection of the second isolation layer onto the surface of the cover plate is located inside the cover plate.

6. The method for testing the aging performance of adhesives according to claim 5, characterized in that, The minimum distance between the adhesive layer and the edge of the back plate is 50mm to 100mm; the minimum distance between the adhesive layer and the edge of the cover plate is 50mm to 100mm.

7. The method for testing the aging performance of adhesives according to claim 1, characterized in that, The orthographic projection of the first adhesive film layer onto the surface of the first isolation layer is located inside the first isolation layer; the orthographic projection of the second adhesive film layer onto the surface of the second isolation layer is located inside the second isolation layer.

8. The method for testing the aging performance of adhesives according to any one of claims 1 to 7, characterized in that, The aging treatment conditions include any one of the following conditions: (1) 120 kWh of ultraviolet aging treatment; (2) Moist heat aging treatment at 85℃ and 85% humidity for 1000h; (3) Thermo-oxidative aging treatment at 150℃ for 200h.

9. The method for testing the aging performance of adhesives according to any one of claims 1 to 7, characterized in that, Testing the adhesive layer includes the following steps: The adhesive layer is tested. If the yellowing index of the adhesive layer is <5, the average transmittance in the wavelength range of 280nm~1100nm is ≥80%, and 80%≤hardness retention rate≤120%, then the adhesive is deemed qualified; otherwise, the adhesive is deemed unqualified.

10. A test specimen for the aging performance of an adhesive, characterized in that, The intermediate component comprises a back plate, a first adhesive film layer, a first isolation layer, an adhesive layer, a second isolation layer, a second adhesive film layer, and a cover plate stacked sequentially, wherein the adhesive layer is made of adhesive and is not bonded to either the first isolation layer or the second isolation layer; The adhesive aging performance test sample also includes a packaging component, which encapsulates the intermediate component around its perimeter. The adhesive layer is located within the area formed by the packaging component, the back plate, and the cover plate.

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