Water permeability test piece and water permeability test device

Abstract

The utility model relates to the technical field of water permeability testing, and provides a water permeability testing piece and a water permeability testing device. The water permeability test piece comprises a first material layer, a second material layer and a third material layer which are sequentially stacked, a first through hole is formed in the first material layer, a second through hole is formed in the second material layer, and the first through hole is communicated with the second through hole. The water permeability test piece is stacked and provided with the first through hole and the second through hole, the interface water permeability condition between material layers can be detected, and the device has the advantages of being simple in structure, convenient to operate and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water permeability testing, in particular to a water permeability testing piece and a water permeability testing device. BACKGROUND

[0002] A solar cell is a device for converting solar energy into electrical energy. Among them, a heterojunction photovoltaic module adopts a double EVA (ethylene-vinyl acetate copolymer) film packaging method to reduce costs, but the EVA itself has poor water resistance, which reduces the moisture resistance reliability of the module. In the traditional technology, aluminum foil tape is attached to the four edges of the laminated part of the module. Since aluminum has good water resistance, the water resistance of the vertical surface of the aluminum foil tape is excellent, but the adhesion strength of the aluminum foil tape and the glass is poorer than that of the direct adhesion of the silicone and the glass, and in the traditional technology, only the water vapor transmission material layer is used to test the vertical water permeability, and a water permeability testing device capable of testing the water permeability of the contact surface between the material layers is needed. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a water permeability testing piece and a water permeability testing device capable of testing the water permeability parameters of the contact surface between the material layers.

[0004] In a first aspect, the present application provides a water permeability testing piece, which comprises a first material layer, a second material layer and a third material layer which are sequentially stacked, a first through hole is formed in the first material layer, a second through hole is formed in the second material layer, and the first through hole and the second through hole are communicated.

[0005] In some embodiments, the diameter of the first through hole is less than or equal to the diameter of the second through hole.

[0006] In some embodiments, the diameter of the first through hole is 5mm-15mm.

[0007] In some embodiments, the diameter of the second through hole is greater than or equal to 15mm.

[0008] In some embodiments, the thickness of the first material layer is greater than or equal to 10μm.

[0009] In some embodiments, the thickness of the second material layer is greater than or equal to 10μm.

[0010] In some embodiments, the thickness of the third material layer is greater than or equal to 10μm.

[0011] In a second aspect, the present application provides a water permeability testing device, which comprises:

[0012] A shell, the shell comprising a water vapor generating cavity and a water vapor detecting cavity inside, the shell being used to place the water permeability test piece as claimed in the first aspect, wherein the first material layer in the water permeability test piece is close to a side of the water vapor generating cavity, and the third material layer is close to a side of the water vapor detecting cavity.

[0013] A water vapor generating component, the water vapor generating component being arranged in the water vapor generating cavity, the water vapor generating component being used to generate water vapor.

[0014] A water vapor detecting component, the water vapor detecting component being arranged in the water vapor detecting cavity, the water vapor detecting component being used to detect the water vapor content in the water vapor detecting cavity.

[0015] In some embodiments, the water permeability test device further comprises a fixing component arranged in the shell, the fixing component being used to fix the water permeability test piece.

[0016] In some embodiments, the fixing component comprises a clamp arranged in the shell, the area of the second material layer and the area of the third material layer in the water permeability test piece are both smaller than the area of the first material layer, and the clamp is used to clamp the edge of the first material layer.

[0017] In some embodiments, the water permeability test device further comprises a supporting component, the supporting component being arranged in the water vapor detecting cavity of the shell, and the supporting component being used to support the side of the water permeability test piece with the third material layer.

[0018] In some embodiments, the supporting component comprises a supporting plate and an extension rod, one end of the extension rod is connected to the supporting plate, and the other end of the extension rod is connected to the shell, and the extension rod is used to adjust the height of the supporting plate.

[0019] In some embodiments, the water permeability test device further comprises a pressing component, the pressing component being arranged in the water vapor generating cavity of the shell, and the pressing component being used to press the overlapping area of the first material layer, the second material layer and the third material layer in the water permeability test piece in cooperation with the supporting component.

[0020] Compared with the conventional technology, the present application has at least the following beneficial effects:

[0021] In the present application, the first through hole and the second through hole are arranged in the water permeability test piece, and in the test process, water vapor can enter the second through hole through the first through hole, and after entering the second through hole, the water vapor can be transmitted through the contact surface between the second material layer and the first material layer, and / or the contact surface between the second material layer and the third material layer, so that the water permeability test piece can be measured according to the change of the water vapor content transmitted through the water permeability test piece, and the water permeability test piece can be measured according to the change of the water vapor content transmitted through the water permeability test piece. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a water permeability testing device provided in one embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the structure of another water permeability testing device provided in one embodiment of this application.

[0024] Among them, 100-water permeability test piece; 110-first material layer; 111-first through hole; 120-second material layer; 121-second through hole; 130-third material layer; 200-water permeability test device; 210-shell; 211-water vapor generating chamber; 212-water vapor detection chamber; 220-water vapor generating component; 230-water vapor detection component; 240-fixing component; 250-support component; 251-support plate; 252-telescopic rod; 260-pressing component. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings, embodiments, and examples. These embodiments and examples are for illustrative purposes only and are not intended to limit the scope of the present application. The purpose of providing these embodiments and examples is to enable a more thorough and comprehensive understanding of the disclosure of the present application. It should also be understood that the present application can be implemented in many different forms and is not limited to the embodiments and examples described herein. Those skilled in the art can make various modifications or alterations without departing from the spirit of the present application, and the equivalent forms obtained also fall within the protection scope of the present application. Furthermore, numerous specific details are set forth in the following description to provide a fuller understanding of the present application. It should be understood that the present application can be implemented without one or more of these details.

[0026] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0027] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "fixed," and "set" 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. Those skilled in the art can understand the meaning of the above terms in this application according to the specific circumstances.

[0028] In this application, "optionally," "optionally," and "optional" mean that something is optional, that is, it means that it is selected from either "with" or "without." If there are multiple "optional" entries in a technical solution, unless otherwise specified, and there are no contradictions or mutual constraints, each "optional" entry shall be independent.

[0029] In this application, the technical features described in an open-ended manner include both closed technical solutions consisting of the listed features and open technical solutions that include the listed features.

[0030] In this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or quantity, nor should they be construed as implicitly indicating the importance or quantity of the indicated technical features. Moreover, "first," "second," etc., serve only as a non-exhaustive enumeration and should be understood not to constitute a closed limitation on quantity.

[0031] All references to this application are incorporated herein by reference as if each document were individually incorporated herein by reference. Unless they conflict with the purpose and / or technical solution of this application, all cited references are incorporated herein by reference in their entirety and for all purposes. When references are cited in this application, the definitions of relevant technical features, terms, nouns, phrases, etc., are also incorporated herein by reference. Examples and preferred embodiments of the cited technical features may also be incorporated herein by reference, but only to the extent that they enable the implementation of this application. It should be understood that when the cited content conflicts with the description in this application, this application shall prevail or modifications shall be made adaptably to the description in this application.

[0032] In traditional techniques, the material layer to be tested is placed inside a water permeability analyzer to measure the water permeability along the thickness direction. However, in practical applications, the material layer may consist of multiple layers stacked together, and moisture may enter from the interface between the material layers, thus affecting the material's performance.

[0033] Based on this, the first aspect of this application provides a water permeability test specimen, such as... Figure 1 and Figure 2As shown, the water permeability test piece 100 includes a first material layer 110, a second material layer 120 and a third material layer 130 stacked in sequence. The first material layer 110 has a first through hole 111 and the second material layer 120 has a second through hole 121. The first through hole 111 and the second through hole 121 are connected.

[0034] This application provides a first through hole 111 and a second through hole 121 in the water permeability test piece 100. During the test, water vapor can enter the second through hole 121 through the first through hole 111. After entering the second through hole 121, the water vapor can pass through the contact surface between the second material layer 120 and the first material layer 110, and / or the contact surface between the second material layer 120 and the third material layer 130. Thus, the water permeability of the interlayer interface of the water permeability test piece 100 can be measured based on the change in water vapor content passing through the water permeability test piece 100.

[0035] It is understood that the materials of the first material layer 110, the second material layer 120, and the third material layer 130 in this application can be reasonably selected according to the testing requirements. For example, when testing the interfacial water permeability of pressure-sensitive adhesive on aluminum foil, the first material layer 110 and the third material layer 130 can be made of aluminum foil, and the second material layer 120 can be made of pressure-sensitive adhesive.

[0036] It should be noted that the second material layer 120 in this application can be obtained by stacking multiple layers of the same or different materials, and can be reasonably adjusted according to the actual test results.

[0037] In some embodiments, the diameter of the first through hole 111 is less than or equal to the diameter of the second through hole 121.

[0038] In some embodiments, the diameter of the first through hole 111 is 5mm to 15mm, for example, it can be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm or 15mm.

[0039] In some embodiments, the diameter of the second through hole 121 is greater than or equal to 15 mm.

[0040] In some embodiments, the thickness of the first material layer 110 is greater than or equal to 10 μm.

[0041] In some embodiments, the thickness of the second material layer 120 is greater than or equal to 10 μm.

[0042] In some embodiments, the thickness of the third material layer 130 is greater than or equal to 10 μm.

[0043] In some embodiments, the first material layer 110 is an aluminum foil layer, the second material layer 120 is an adhesive layer, and the third material layer 130 is an aluminum foil layer.

[0044] The second aspect of this application provides a water permeability testing device, such as... Figure 1 and Figure 2 As shown, the water permeability testing device 200 includes a housing 210, a water vapor generating component 220, and a water vapor detection component 230.

[0045] The housing 210 includes a water vapor generating chamber 211 and a water vapor detection chamber 212. The housing 210 is used to house the water permeability test piece 100 as described in the first aspect, wherein the first material layer 110 of the water permeability test piece 100 is located near the side of the water vapor generating chamber 211, and the third material layer 130 is located near the side of the water vapor detection chamber 212. Water vapor in the water vapor generating chamber 211 flows through the first through hole 111 and the second through hole 121, and permeates into the water vapor detection chamber 212 at least at the interface between the second material layer 120 and the first connecting layer and / or the second connecting layer.

[0046] The water vapor generating component 220 is disposed in the water vapor generating chamber 211, and the water vapor generating component 220 is used to generate water vapor; the water vapor detection component 230 is disposed in the water vapor detection chamber 212, and the water vapor detection component 230 is used to detect the water vapor content in the water vapor detection chamber 212.

[0047] It is understood that the water vapor generated by the water vapor generating component 220 in this application can permeate from the water vapor generating chamber 211 through the first through hole 111 and the second through hole 121, and then at least through the interface between the second material layer 120 and the first material layer 110 and / or the interface between the third material layer 130 to the water vapor detection chamber 212. The water vapor detection component 230 then measures the change in water vapor content within the water vapor detection chamber 212 to quantify the water permeability of the water permeability test piece 100. For example, at least the interface between the second material layer 120 and the third material layer 130 is located within the water vapor detection chamber 212. Figure 2 As shown, water vapor can permeate from the second through-hole 121 through the interface between the second material layer 120 and the third material layer 130 into the water vapor detection chamber 212 to test the water permeability of the interface between the second material layer 120 and the third material layer 130. Alternatively, as... Figure 1 As shown, when the connection interfaces between the second material layer 120 and the first material layer 110, and between the second material layer 120 and the third material layer 130, are all located in the water vapor detection chamber 212, the overall water permeability at the connection interfaces between the second material layer 120 and the first material layer 110, and between the second material layer 120 and the third material layer 130, can be tested simultaneously. Therefore, this application allows for the reasonable arrangement of the water permeability test specimen 100 according to different testing requirements.

[0048] In some embodiments, such asFigure 1 and Figure 2 As shown, the water permeability testing device 200 also includes a fixing member 240 disposed within the housing 210, which is used to fix the water permeability test piece 100. Optionally, a sealing member (not shown in the figure) is provided at the contact point between the fixing member 240 and the water permeability test piece 100. For example, the sealing member can be a sealing strip. By fixing the water permeability test piece 100 with the fixing member 240, this application can not only ensure the stability of the water permeability test piece 100 during the test, but also prevent water vapor from leaking from the edge of the water permeability test piece 100 into the water vapor detection chamber 212. This effectively ensures that water vapor in the water vapor generation chamber 211 can permeate into the water vapor detection chamber 212 through the second through hole 121 and the second material layer 120.

[0049] In some embodiments, the fixing member 240 includes a clamp disposed within the housing 210. The areas of the second material layer 120 and the third material layer 130 are both smaller than the area of ​​the first material layer 110. The clamp is used to clamp the edge of the first material layer 110. This application utilizes the clamp to clamp and fix the first material layer 110 in the water permeability test piece 100, which enables the connection interface between the second material layer 120 and the first material layer 110, as well as the connection interface between the second material layer 120 and the third material layer 130, to be located within the water vapor detection chamber 212, thereby enabling a comprehensive evaluation of water permeability.

[0050] In some embodiments, such as Figure 1 and Figure 2 As shown, the water permeability testing device 200 also includes a support member 250, which is disposed within the water vapor detection chamber 212 of the housing 210. The support member 250 is used to support the side of the water permeability test specimen 100 that has the third material layer 130. By providing the support member 250, this application can support the water permeability test specimen 100, thereby preventing deformation of the water permeability test specimen under gravity and preventing the second material layer 120 or the third material layer 130 from falling off under high-pressure testing conditions.

[0051] In some embodiments, the support member 250 includes a support plate 251 and a telescopic rod 252. One end of the telescopic rod 252 is connected to the support plate 251, and the other end is connected to the housing 210. The telescopic rod 252 is used to adjust the height of the support plate 251. Optionally, the telescopic rod 252 can be a telescopic cylinder. This application utilizes the telescopic rod 252 to achieve adjustable height of the support plate 251, thereby enabling adjustment according to water permeability test specimens 100 of different thicknesses to ensure testing of different water permeability test specimens 100.

[0052] It is understood that the support member 250 in this application can be a hollow structure or a full-plate structure. In this application, the support plate 251 is set as a hollow structure, which allows for the simultaneous testing of the vertical water permeability of the third material layer 130, enabling the measurement of the overall water permeability of the water permeability test piece 100. If the support plate 251 in this application is set as a full-plate structure, the full plate can partially block the vertical water permeability of the third material layer 130, thereby reducing the impact of the vertical water permeability of the third material layer 130 on the interface water permeability test.

[0053] In some embodiments, such as Figure 1 and Figure 2 As shown, the water permeability testing device 200 also includes a pressing component 260, which is disposed within the water vapor generation chamber 211 of the housing 210. The pressing component 260 is used to cooperate with the support component 250 to press the overlapping area of ​​the first material layer 110, the second material layer 120, and the third material layer 130 in the water permeability test piece 100. By providing a pressing component, this application can cooperate with the support component 250 to press the water permeability test piece 100, thereby simulating the water permeability test of the water permeability test piece 100 under a laminated state during actual application.

[0054] In some embodiments, the water vapor detection component 230 may be an infrared water vapor detector.

[0055] In some embodiments, the water vapor generating component 220 may be a water vapor evaporator or a sprayer, etc.

[0056] Exemplarily, a method for testing the water permeability of a water permeability test specimen 100 using the above-described water permeability testing device is provided, comprising the following steps:

[0057] S1. The water permeability test piece 100 is clamped and fixed to the fixing piece 240 of the water permeability test device 200;

[0058] S2. According to the test requirements, water vapor is generated in the water vapor generating chamber 211 using the water vapor generating component 220;

[0059] S3. Water vapor enters the second through hole 121 through the first through hole 111 and permeates into the water vapor detection chamber 212 through the connection interface of the second material layer 120. The water vapor detection component 230 detects the change in water vapor content in the water vapor detection chamber 212.

[0060] S4. The interfacial water permeability is calculated based on the changes in the interfacial area and water vapor content of the second material layer 120.

[0061] In summary, this application provides a first through hole 111 and a second through hole 121 in the water permeability test piece 100. During the test, water vapor can enter the second through hole 121 through the first through hole 111. After entering the second through hole 121, the water vapor can pass through the contact surface between the second material layer 120 and the first material layer 110, and / or the contact surface between the second material layer 120 and the third material layer 130. Thus, the water permeability of the interlayer interface of the water permeability test piece 100 can be measured based on the change in water vapor content that passes through the water permeability test piece 100 into the water vapor detection chamber 212.

[0062] 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.

[0063] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the application. 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 application should be determined by the appended claims.

Claims

1. A water permeability test specimen, characterized in that, The water permeability test piece (100) includes a first material layer (110), a second material layer (120) and a third material layer (130) stacked in sequence. The first material layer (110) has a first through hole (111) and the second material layer (120) has a second through hole (121). The first through hole (111) and the second through hole (121) are connected.

2. The water permeability test specimen as described in claim 1, characterized in that, The diameter of the first through hole (111) is less than or equal to the diameter of the second through hole (121).

3. The water permeability test specimen as described in claim 1, characterized in that, The diameter of the first through hole (111) is 5mm~15mm; and / or, The diameter of the second through hole (121) is greater than or equal to 15 mm.

4. The water permeability test specimen as described in any one of claims 1-3, characterized in that, The thickness of the first material layer (110) is greater than or equal to 10 μm; and / or, The thickness of the second material layer (120) is greater than or equal to 10 μm; and / or, The thickness of the third material layer (130) is greater than or equal to 10 μm.

5. A water permeability testing device, characterized in that, The water permeability testing device (200) includes: The housing (210) includes a water vapor generating chamber (211) and a water vapor detection chamber (212). The housing (210) is used to place the water permeability test piece (100) according to any one of claims 1-4, wherein the first material layer (110) of the water permeability test piece (100) is close to the side of the water vapor generating chamber (211), and the third material layer (130) is close to the side of the water vapor detection chamber (212). A water vapor generating component (220) is disposed inside the water vapor generating chamber (211) and is used to generate water vapor; A water vapor detection component (230) is disposed in the water vapor detection chamber (212) and is used to detect the water vapor content in the water vapor detection chamber (212).

6. The water permeability testing device as described in claim 5, characterized in that, The water permeability testing device (200) further includes a fastener (240) disposed within the housing (210), the fastener (240) being used to fix the water permeability test specimen (100).

7. The water permeability testing device as described in claim 6, characterized in that, The fastener (240) includes a clamp disposed within the housing (210). The area of ​​the second material layer (120) and the area of ​​the third material layer (130) in the water permeability test piece (100) are both smaller than the area of ​​the first material layer (110). The clamp is used to clamp the edge of the first material layer (110).

8. The water permeability testing device as described in claim 5, characterized in that, The water permeability testing device (200) further includes a support member (250), which is disposed in the water vapor detection chamber (212) of the housing (210) and is used to support the side of the water permeability test piece (100) having the third material layer (130).

9. The water permeability testing device as described in claim 8, characterized in that, The support member (250) includes a support plate (251) and a telescopic rod (252). One end of the telescopic rod (252) is connected to the support plate (251), and the other end of the telescopic rod (252) is connected to the housing (210). The telescopic rod (252) is used to adjust the height of the support plate (251).

10. The water permeability testing device as described in claim 8, characterized in that, The water permeability testing device (200) further includes a pressing member (260), which is disposed in the water vapor generating chamber (211) of the housing (210). The pressing member (260) is used to cooperate with the support member (250) to press the overlapping area of ​​the first material layer (110), the second material layer (120) and the third material layer (130) in the water permeability testing piece (100).

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