Membrane material testing method and testing device

Abstract

The invention relates to the technical field of refrigeration, in particular to a method and a device for testing a membrane material. The membrane material comprises a first membrane material with a first area and a second membrane material with a second area, and the membrane material testing method comprises the steps that a first testing assembly is provided, a second testing assembly is provided, a first vacuum gauge connector and a second vacuum gauge connector are connected with vacuumizing equipment respectively, and the vacuumizing equipment is used for vacuumizing the membrane material. Obtaining a first leak rate of the first test component and a second leak rate of the second test component; and obtaining the permeability of the first membrane material in unit area according to the first leak rate and the second leak rate. According to the test method of the membrane material, the first leak rate of the first test assembly and the second leak rate of the second test assembly are obtained by providing the first test assembly and the second test assembly, and the permeability of the membrane material per unit area of the first membrane material is obtained according to the first leak rate and the second leak rate; and the quantitative data of the permeability of the first membrane material in unit area can be obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration, and particularly relates to a testing method and a testing device for a film material. Background Art

[0002] What is provided in this part is only background information related to the present disclosure, and it is not necessarily prior art.

[0003] A vacuum insulation panel is a product that uses a high-barrier film material to wrap a core material and maintains a low pressure inside the panel for a long time to achieve excellent heat insulation performance. Deterioration of the vacuum degree inside the vacuum insulation panel will lead to a reduction in heat insulation performance. Therefore, the film material of the vacuum insulation panel needs to have good gas barrier performance under a pressure difference of 10 5 Pa to ensure the long-term reliability of the vacuum insulation panel.

[0004] The main test item for the film material of the vacuum insulation panel is the permeability of the film material per unit area. However, in the prior art, the testing method for the film material cannot accurately obtain the quantitative data of the permeability of the film material per unit area. Summary of the Invention

[0005] The purpose of the present invention is to at least solve the problem that the testing method for the film material in the prior art cannot accurately obtain the quantitative data of the permeability of the film material per unit area. This purpose is achieved through the following technical solutions:

[0006] A first aspect of an embodiment of the present invention provides a testing method for a film material. The film material includes a first film material with a first area and a second film material with a second area. The first film material and the second film material are film materials with the same properties. The testing method for the film material includes:

[0007] Providing a first test component, the first test component includes a first support body, a first sealing member, and a first vacuum gauge connection port;

[0008] Setting the first film material on at least part of the surface of the first support body, and arranging a first sealing member outside the first support body. The first sealing member and the first film material form a first accommodation space, and the first support body is located inside the first accommodation space;

[0009] Arranging the first vacuum gauge connection port on at least one of the first film material and the first sealing member to communicate the first vacuum gauge connection port with the first accommodation space;

[0010] Providing a second test component, the second test component includes a second support body, a second sealing member, and a second vacuum gauge connection port;

[0011] The second film material is disposed on at least a part of the surface of the second support, wherein the first area is different from the second area; and a second sealing member is disposed outside the second support, and the second sealing member and the second film material form a second accommodation space, and the second support is located within the second accommodation space;

[0012] The second vacuum gauge connection port is disposed on at least one of the second film material and the second sealing member, and the second vacuum gauge connection port is in communication with the second accommodation space;

[0013] The first vacuum gauge connection port and the second vacuum gauge connection port are respectively connected to a vacuum pumping device to obtain a first leakage rate of the first test assembly and a second leakage rate of the second test assembly;

[0014] The permeability of the per unit area of the first film material is obtained based on the first leakage rate and the second leakage rate. According to the method for testing a film material of the present invention, by providing a first test assembly and a second test assembly, wherein the first test assembly includes a first support, a first sealing member, and a first vacuum gauge connection port, the first film material is disposed on at least a part of the surface of the first support, and a first sealing member is disposed outside the first support, and the first sealing member and the first film material form a first accommodation space, and the first support is located within the first accommodation space; the first vacuum gauge connection port is disposed on at least one of the first film material and the first sealing member, wherein the first vacuum gauge connection port is in communication with the first accommodation space, and the second test assembly includes a second support, a second sealing member, and a second vacuum gauge connection port; the second film material is disposed on at least a part of the surface of the second support; and a second sealing member is disposed outside the second support, and the second sealing member and the second film material form a second accommodation space, and the second support is located within the second accommodation space; the second vacuum gauge connection port is disposed on at least one of the second film material and the second sealing member, wherein the second vacuum gauge connection port is in communication with the second accommodation space, and by connecting the first vacuum gauge connection port and the second vacuum gauge connection port to a vacuum pumping device respectively, the first leakage rate of the first test assembly and the second leakage rate of the second test assembly are obtained, and the permeability of the per unit area of the first film material is obtained based on the first leakage rate and the second leakage rate, then quantitative data of the permeability of the per unit area of the first film material can be obtained.

[0015] In addition, according to the method for testing a film material of the present invention, the following additional technical features may further be included:

[0016] In some embodiments of the present invention, a first hollow cavity is provided in the first support body, and the first support body includes a first surface and a second surface oppositely arranged in the vertical direction. Wherein, a first through hole communicating with the first hollow cavity is provided on the first surface, and a second through hole communicating with the first hollow cavity is provided on the second surface; the first film material is provided on both the first surface and the second surface.

[0017] In some embodiments of the present invention, the first sealing member includes a first sealing strip, the first sealing strip is arranged on the circumferential outer surface of the first support body, and the first sealing strip connects the first film material provided on the first surface and the first film material provided on the second surface.

[0018] In some embodiments of the present invention, a second hollow cavity is provided in the second support body, and the second support body includes a third surface and a fourth surface oppositely arranged in the vertical direction. Wherein, a third through hole communicating with the second hollow cavity is provided on the third surface, and a fourth through hole communicating with the second hollow cavity is provided on the fourth surface; the second film material is provided on both the third surface and the fourth surface.

[0019] In some embodiments of the present invention, the second sealing member includes a second sealing strip, the second sealing strip is arranged on the circumferential outer surface of the second support body, and the second sealing strip connects the second film material provided on the third surface and the second film material provided on the fourth surface.

[0020] In some embodiments of the present invention, both the first support body and the second support body are rectangular body structures. In a direction perpendicular to the length direction of the first support body, the first support body has a first cross-section. In a direction perpendicular to the length direction of the second support body, the second support body has a second cross-section. The shapes and sizes of the first cross-section and the second cross-section are the same, and the length of the first support body is different from the length of the second support body.

[0021] In some embodiments of the present invention,

[0022] The film material further includes a third film material having a third area. The first film material and the third film material are film materials having the same properties, and the third area is different from both the first area and the second area. The testing method of the film material further includes:

[0023] Providing a third testing assembly, the third testing assembly includes a third support body, a third sealing member, and a third vacuum gauge connection port;

[0024] The third film material is disposed on at least a part of the surface of the third support; and a third sealing member is disposed outside the third support, and the third sealing member and the third film material form a third accommodation space, and the third support is located within the third accommodation space;

[0025] The third vacuum gauge connection port is disposed on at least one of the third film material and the third sealing member, such that the third vacuum gauge connection port communicates with the third accommodation space;

[0026] The third vacuum gauge connection port is connected to the evacuation device, and the third leak rate of the third test assembly is obtained;

[0027] The permeability of the first film material per unit area of the film material is obtained based on the first leak rate, the second leak rate, and the third leak rate.

[0029] In some embodiments of the present invention, the third support is formed by splicing the first support and the second support, and the first hollow cavity and the second hollow cavity are in a communicating state.

[0030] In some embodiments of the present invention, the third test assembly includes at least two of the third vacuum gauge connection ports, wherein at least one of the third vacuum gauge connection ports is disposed on the third film material.

[0031] In some embodiments of the present invention, obtaining the permeability of the first film material per unit area of the film material based on the first leak rate, the second leak rate, and the third leak rate specifically includes:

[0032] Obtaining the total area of the first sealing member and the total area of the first film material;

[0033] Obtaining the total area of the second sealing member and the total area of the second film material;

[0034] Obtaining the total area of the third sealing member and the total area of the third film material;

[0035] Determining the permeability of the first film material per unit area of the film material based on the total area of the first sealing member, the total area of the first film material, the total area of the second sealing member, the total area of the second film material, the total area of the third sealing member, the total area of the third film material, and the leak rate of the first vacuum gauge connection port, wherein the leak rates of the first vacuum gauge connection port, the second vacuum gauge connection port, and the third vacuum gauge connection port are the same.

[0036] In some embodiments of the present invention, the outer end corner position of the first support is set to a rounded structure, and / or the outer end corner position of the second support is set to a rounded structure.

[0037] A second aspect of an embodiment of the present invention provides a testing device for a membrane material to implement the testing method mentioned above. The testing device for the membrane material includes:

[0038] A first testing component, which includes a first support body, a first sealing member, and a first vacuum gauge connection port. The first membrane material is disposed on at least a part of the surface of the first support body, and a first sealing member is disposed outside the first support body. The first sealing member and the first membrane material form a first accommodation space, and the first support body is located within the first accommodation space; at least one of the first membrane material and the first sealing member is provided with a first vacuum gauge connection port, wherein the first vacuum gauge connection port communicates with the first accommodation space;

[0039] A second testing component, which includes a second support body, a second sealing member, and a second vacuum gauge connection port; the second membrane material is disposed on at least a part of the surface of the second testing component, wherein the first area is different from the second area; and a second sealing member is disposed outside the second support body. The second sealing member and the second membrane material form a second accommodation space, and the second support body is located within the second accommodation space; at least one of the second membrane material and the second sealing member is provided with a second vacuum gauge connection port, wherein the second vacuum gauge connection port communicates with the second accommodation space;

[0040] An acquisition component, which is configured to obtain a first leakage rate of the first testing component and a second leakage rate of the second testing component after connecting the first vacuum gauge connection port and the second vacuum gauge connection port to a vacuum pumping device respectively; and

[0041] A calculation component, which is configured to obtain the permeability of the unit area of the first membrane material according to the first leakage rate and the second leakage rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:

[0043] Figure 1 Schematically shows a flowchart of a testing method for a membrane material according to an embodiment of the present invention;

[0044] Figure 2 Schematically shows a structural schematic diagram of a first support body in a first perspective view (top view state) according to an embodiment of the present invention;

[0045] Figure 3 is Figure 2 a schematic cross-sectional structure view of the first support shown in [Figure] along the A-A section;

[0046] Figure 4 schematically shows a schematic structure view of the first test component according to an embodiment of the present invention at a first perspective (top view state);

[0047] Figure 5 is Figure 4 a schematic cross-sectional structure view of the first test component shown in [Figure] along the B-B section;

[0048] Figure 6 schematically shows a schematic structure view of the second test component according to an embodiment of the present invention at a first perspective (top view state);

[0049] Figure 7 is Figure 6 a schematic cross-sectional structure view of the second test component shown in [Figure] along the C-C section;

[0050] Figure 8 schematically shows a schematic structure view of the third test component according to an embodiment of the present invention at a first perspective (top view state);

[0051] Figure 9 is Figure 8 a schematic cross-sectional structure view of the third test component shown in [Figure] along the D-D section.

[0052] The reference numerals are as follows:

[0053] 100, the first test component;

[0054] 10, the first support; 11, the first surface; 111, the first through hole; 12, the second surface; 121, the second through hole;

[0055] 20, the first film material;

[0056] 30, the first sealing member;

[0057] 40, the first vacuum gauge connection port;

[0058] 50, the first accommodation space;

[0059] 60, the first hollow cavity;

[0060] 200, the second test component;

[0061] 201, the second support; 2011, the third surface; 20111, the third through hole; 2012, the fourth surface; 20121, the fourth through hole;

[0062] 202, the second film material;

[0063] 203. Second sealing member;

[0064] 204. Second vacuum gauge connection port;

[0065] 205. Second accommodation space;

[0066] 206. Second hollow cavity;

[0067] 300. Third test assembly;

[0068] 301. Third support body;

[0069] 302. Third membrane material;

[0070] 303. Third sealing member;

[0071] 304. Third vacuum gauge connection port;

[0072] 305. Third accommodation space;

[0073] 306. Third hollow cavity;

[0074] X-X. First direction;

[0075] Y-Y. Vertical direction. Detailed implementation manners

[0076] Hereinafter, the exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0077] It should be understood that the terms used herein are only for the purpose of describing specific exemplary embodiments and are not intended to be limiting. Unless otherwise clearly specified in the context, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or their combinations. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be executed in the particular order described or illustrated, unless the execution order is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0078] Although terms such as first, second, and third may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms do not imply an order or sequence when used herein. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0079] For ease of description, spatial relative relationship terms may be used herein to describe the relationship of one element or feature shown in the figures to another element or feature, such as "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "beneath" other elements or features will then be oriented "above" or "over" the other elements or features. Thus, the exemplary term "below" can include both the upper and lower orientations.

[0080] As Figures 1 to 9 shown, according to a first aspect of an embodiment of the present invention, a method for testing a membrane material is provided, wherein, Figure 1 A flowchart of the method for testing a membrane material according to an embodiment of the present invention is schematically shown, wherein the membrane material includes a first membrane material having a first area and a second membrane material having a second area, and the first membrane material and the second membrane material are membrane materials having the same properties. The method for testing the membrane material includes:

[0081] S11. Provide a first test assembly 100, as Figures 2 to 5 shown, wherein, Figure 2 A schematic structural view (top view state) of a first support 10 according to an embodiment of the present invention is schematically shown from a first perspective, Figure 3 is Figure 2 a cross-sectional structural view of the first support 10 shown in [reference] along the A-A section, Figure 4 A schematic structural view (top view state) of the first test assembly 100 according to an embodiment of the present invention is schematically shown from a first perspective, Figure 5 is Figure 4Schematic cross-sectional structure diagram of the first test component 100 shown in [Figure], the structure of the first test component 100 will be described in detail below. The first test component 100 includes a first support body 10. The first test component 100 further includes a first sealing member 30 and a first vacuum gauge connection port 40. A first film material 20 with a first area is provided on at least part of the surface of the first support body 10. And a first sealing member 30 is provided outside the first support body 10. The first sealing member 30 and the first film material 20 form a first accommodation space 50. The first support body 10 is located inside the first accommodation space 50. A first vacuum gauge connection port 40 is provided on one of the first film material 20 and the first sealing member 30. Wherein, the first vacuum gauge connection port 40 communicates with the first accommodation space 50.

[0082] The first accommodation space 50 here may be a rectangular space. At this time, the first support body 10 is of a rectangular structure, and the first support body 10 is located inside the first accommodation space 50. Alternatively, the first accommodation space 50 here may also be a cylindrical space. At this time, the first support body 10 is of a cylindrical structure, and the first support body 10 is located inside the first accommodation space 50. The first sealing member 30 and the first film material 20 here form a closed space, which is convenient for evacuating the first accommodation space 50 through the first vacuum gauge connection port 40.

[0083] Optionally, the first support body 10 here may be a structure formed by plates made of a metal material, and the outgassing rate of the metal material is relatively low. For example, the first support body 10 may be made of steel material or may be made of aluminum alloy, having a certain strength and stiffness and not easily deforming. When the pressure difference inside and outside the first accommodation space 50 is 10 5 Pa, the first support body 10 will not deform.

[0084] S12. Provide a second test component 200, wherein, Figure 6 Schematically shows a schematic structural diagram (top view state) of the second test component 200 according to an embodiment of the present invention at a first viewing angle, Figure 7 For Figure 6Schematic cross-sectional structure diagram of the second test component 200 shown in [Figure], the second test component 200 includes a second support body 201, the second test component 200 further includes a second sealing member 203 and a second vacuum gauge connection port 204, a second film material 202 with a second area is disposed on at least part of the surface of the second support body 201, wherein, the first area is different from the second area; and a second sealing member 203 is disposed outside the second support body 201, the second sealing member 203 and the second film material 202 form a second accommodation space 205, the second support body 201 is located within the second accommodation space 205; at least one of the second film material 202 and the second sealing member 203 is provided with a second vacuum gauge connection port 204, wherein, the second vacuum gauge connection port 204 communicates with the second accommodation space 205.

[0085] The second accommodation space 205 here may be a rectangular space. At this time, the second support body 201 is a rectangular structure, and the second support body 201 is located within the second accommodation space 205. Alternatively, the second accommodation space 205 here may also be a cylindrical space. At this time, the second support body 201 is a cylindrical structure, and the second support body 201 is located within the second accommodation space 205. The second sealing member 203 and the second film material 202 here form a closed space, which facilitates the evacuation operation of the space through the second vacuum gauge connection port 204.

[0086] Optionally, the second support body 201 here may be a structure formed by a plate made of a metal material, and the outgassing rate of the metal material is relatively low. For example, the second support body 201 may be made of steel material or aluminum alloy, having a certain strength and stiffness and not easily deforming. When the internal and external pressure difference of the second accommodation space 205 is 10 5 Pa, the second support body 201 will not deform.

[0087] S13. Connect the first vacuum gauge connection port 40 and the second vacuum gauge connection port 204 to a vacuum pumping device respectively to obtain the first leak rate of the first test component 100 and the second leak rate of the second test component 200.

[0088] S14. Obtain the permeability of the per unit area film of the first film material 20 based on the first leak rate and the second leak rate.

[0089] That the first film material 20 and the second film material 202 here are film materials with the same properties means that the permeabilities of the first film material 20 and the second film material 202 are the same, so that the permeability of the per unit area film of the first film material 20 or the permeability of the per unit area film of the second film material 202 can be obtained based on the first leak rate and the second leak rate.

[0090] Optionally, the test method of the film material further includes providing a third test component 300, the third test component 300 includes a third support 301, the third test component 300 further includes a third sealing member 303 and a third vacuum gauge connection port 304; at this time, the film material further includes a third film material 302, the first film material 20 and the third film material 302 are film materials with the same properties, a third film material 302 with a third area is provided on at least part of the surface of the third support 301, and the third area is different from both the first area and the second area; and a third sealing member 303 is provided outside the third support 301, the third sealing member 303 and the third film material 302 form a third accommodation space 305, the third support 301 is located in the third accommodation space 305, and a third vacuum gauge connection port 304 is provided on at least one of the third film material 302 and the third sealing member 303, wherein the third vacuum gauge connection port 304 communicates with the third accommodation space 305.

[0091] The first support 10, the second support 201 and the third support 301 here may be rectangular structures of three different sizes. Here, in order to reduce the cost of the test device, the third support 301 can be obtained by splicing the first support 10 and the second support 201.

[0092] A third hollow cavity 306 is formed inside the third support 301, the third hollow cavity 306 includes a first hollow cavity 60 and a second hollow cavity 206, and the first hollow cavity 60 and the second hollow cavity 206 form the third hollow cavity 306.

[0093] Optionally, a first hollow cavity 60 is provided inside the first support 10, and the first support 10 includes a first surface 11 and a second surface 12 that are oppositely arranged in the vertical direction. Among them, a first through hole 111 communicating with the first hollow cavity 60 is provided on the first surface 11, and a second through hole 121 communicating with the first hollow cavity 60 is provided on the second surface 12; first film materials 20 are provided on both the first surface 11 and the second surface 12.

[0094] It should be noted that if a first hollow cavity 60 is provided inside the first support 10, a first through hole 111 communicating with the first hollow cavity 60 is provided on the first surface 11, and a second through hole 121 communicating with the first hollow cavity 60 is provided on the second surface 12, then the flow of gas can be facilitated, the gas discharge speed in the first accommodation space 50 can be accelerated, the vacuum pumping operation can be realized as soon as possible, and the efficiency of the test method can be improved.

[0095] Among them, the vertical direction here is Figure 3in the Y - Y direction, wherein, the first surface 11 is the upper surface of the first support body 10, the second surface 12 is the lower surface of the first support body 10, the number of the first through - holes 111 is multiple, and multiple first through - holes 111 are all arranged on the first surface 11, and each first through - hole 111 communicates with the first hollow cavity 60. The number of the second through - holes 121 is multiple, and multiple second through - holes 121 are all arranged on the second surface 12, and each second through - hole 121 communicates with the first hollow cavity 60. The number of the first membrane materials 20 is two, and the two first membrane materials 20 are respectively arranged on the first surface 11 and the second surface 12.

[0096] For the convenience of calculation, in the embodiments of the present application, the entire surface of the first surface 11 is provided with the first membrane material 20, and the entire surface of the second surface 12 is provided with the first membrane material 20. Alternatively, in the embodiments of the present application, a part of the surface of the first surface 11 may be provided with the first membrane material 20, and the remaining surface of the first surface 11 is provided with a first sealing member; a part of the surface of the second surface 12 is provided with the first membrane material 20, and the remaining surface of the second surface 12 is provided with a first sealing member, and it is also possible to obtain the permeability of the unit - area membrane material of the first membrane material 20 or the permeability of the unit - area membrane material of the second membrane material 202 through calculation.

[0097] Specifically, the first support body 10 may be a hollow cavity with a rectangular - body structure or a hollow cavity with a cylindrical structure, which is convenient for evacuating the inside of the first support body 10.

[0098] Optionally, the first sealing member 30 includes a first sealing strip, the first sealing strip is arranged on the circumferential outer surface of the first support body 10, and the first sealing strip connects the first membrane material 20 arranged on the first surface 11 and the first membrane material 20 arranged on the second surface 12.

[0099] When the first support body 10 has a rectangular - body structure, the first sealing strip has a rectangular - tube - like structure with two open sides, and the two first membrane materials 20 and the first sealing strip enclose a rectangular - body structure. When the first support body 10 has a cylindrical structure, the first sealing strip has a circular - tube - like structure with two open sides.

[0100] Optionally, a second hollow cavity 206 is arranged inside the second support body 201. The second support body 201 includes a third surface 2011 and a fourth surface 2012 which are oppositely arranged in the vertical direction. Among them, a third through - hole 20111 communicating with the second hollow cavity 206 is arranged on the third surface 2011, and a fourth through - hole 20121 communicating with the second hollow cavity 206 is arranged on the fourth surface 2012; second membrane materials 202 are arranged on both the third surface 2011 and the fourth surface 2012.

[0101] Among them, the vertical direction here is Figure 3in the Y-Y direction, where the third surface 2011 is the upper surface of the second support 201, the fourth surface 2012 is the lower surface of the second support 201, the number of the third through holes 20111 is multiple, and the multiple third through holes 20111 are all arranged on the third surface 2011, and each third through hole 20111 communicates with the first hollow cavity 60. The number of the fourth through holes 20121 is multiple, and the multiple fourth through holes 20121 are all arranged on the fourth surface 2012, and each fourth through hole 20121 communicates with the first hollow cavity 60. The number of the second film materials 202 is two, and the two second film materials 202 are respectively arranged on the third surface 2011 and the fourth surface 2012.

[0102] It should be noted that a second hollow cavity 206 is provided in the second support 201, a third through hole 20111 communicating with the second hollow cavity 206 is provided on the third surface 2011, and a fourth through hole 20121 communicating with the second hollow cavity 206 is provided on the fourth surface 2012, so that the flow of gas can be facilitated, the discharge speed of the gas in the second accommodation space 205 can be accelerated, the vacuum operation can be realized as soon as possible, and the efficiency of the test method can be improved.

[0103] Specifically, the second support 201 can be a hollow cavity with a rectangular structure or a hollow cavity with a cylindrical structure, which is convenient for evacuating the inside of the second support 201.

[0104] Optionally, the second sealing member 203 includes a second sealing strip, the second sealing strip is arranged on the outer circumferential surface of the second support 201, and the second sealing strip connects the second film material 202 arranged on the third surface 2011 and the second film material 202 arranged on the fourth surface 2012.

[0105] When the second support 201 is a rectangular structure, the second sealing strip is in a rectangular cylindrical structure with two open ends, and the two second film materials 202 and the second sealing strip enclose a rectangular structure. When the second support 201 is a cylindrical structure, the second sealing strip is in a circular cylindrical structure with two open ends.

[0106] Optionally, both the first support 10 and the second support 201 are rectangular structures, and the first support 10 and the second support 201 have cross-sections with the same size in the vertical direction, and the sizes of the first support 10 and the second support 201 in the first direction are different, and the first direction is the length direction of the first support 10.

[0107] Specifically, in a direction perpendicular to the length direction of the first support 10, the first support 10 has a first cross-section, and in a direction perpendicular to the length direction of the second support 201, the second support 201 has a second cross-section. The shapes and sizes of the first cross-section and the second cross-section are the same, and the length of the first support 10 is different from the length of the second support 201.

[0108] Among them, the first support 10 here is a three-dimensional structure made of a sheet material, and the thickness of the sheet material is negligible. Among them, the dimensions of the cross-section of the first support 10 in the vertical direction are represented by a and h respectively, the dimension of the first support 10 in the first direction is represented by b, the dimensions of the cross-section of the second support 201 in the vertical direction are represented by a and h respectively, and the dimension of the second support 201 in the first direction is represented by c. Among them, c represents the dimension in the length direction of the second support 201, and among them, b and c are different data.

[0109] Optionally, connect the third vacuum gauge connection port 304 to a vacuum pumping device, and obtain the third leak rate of the third test component 300; obtain the permeability of the per unit area of the first film material 20 according to the first leak rate, the second leak rate, and the third leak rate.

[0110] Optionally, the third support 301 is formed by splicing the first support 10 and the second support 201, and the first hollow cavity 60 and the second hollow cavity 206 are in a communicating state. The third support 301 here is formed by splicing the first support 10 and the second support 201, which can reduce the test cost during the test of the film material.

[0111] Optionally, the third test component 300 includes at least two third vacuum gauge connection ports 304. Among them, at least one third vacuum gauge connection port 304 is provided on the third film material 302, and the two third vacuum gauge connection ports 304 are arranged at intervals.

[0112] Here, it is described with the number of the third vacuum gauge connection ports 304 being two. Among them, one third vacuum gauge connection port 304 is located on the third film material 302 above the first support 10, and the other third vacuum gauge connection port 304 is located on the third film material 302 above the second support 201.

[0113] By providing at least two third vacuum gauge connection ports 304 in the embodiments of the present application, the vacuum pumping speed of the third accommodation space 305 can be increased, and the vacuum pumping efficiency of the third accommodation space 305 can be improved.

[0114] Optionally, obtaining the permeability of the per unit area of the first film material 20 based on the first leak rate, the second leak rate, and the third leak rate specifically includes obtaining the total area of the first sealing member 30 and the total area of the first film material 20; obtaining the total area of the second sealing member 203 and the total area of the second film material 202; obtaining the total area of the third sealing member 303 and the total area of the third film material 302; determining the permeability of the per unit area of the first film material 20 based on the total area of the first sealing member 30, the total area of the first film material 20, the total area of the second sealing member 203, the total area of the second film material 202, the total area of the third sealing member 303, the total area of the third film material 302, and the leak rate of the first vacuum gauge connection port 40, wherein the leak rates of the first vacuum gauge connection port 40, the second vacuum gauge connection port 204, and the third vacuum gauge connection port 304 are the same.

[0115] Optionally, the outer end corner position of the first support body 10 is a smooth structure, which can be realized by a round chamfer structure to prevent the first support body 10 from piercing the first film material 20. The outer surface of the first support body 10 can be formed into a smooth surface by a polishing process to prevent the first support body 10 from piercing the first film material 20 or the first sealing strip.

[0116] Similarly, the outer end corner position of the second support body 201 is a smooth structure, which can be realized by a round chamfer structure to prevent the second support body 201 from piercing the second film material 202. The outer surface of the second support body 201 can be formed into a smooth surface by a polishing process to prevent the second support body 201 from piercing the second film material 202 or the second sealing strip.

[0117] Since the third support body 301 adopts the structure formed by splicing the first support body 10 and the second support body 201, therefore, the surface of the third support body 301 is a smooth surface, and the outer end corner position of the third support body 301 is also a smooth structure, which will not pierce the third film material 302 or the third sealing strip. Here, the sealing strip can be made of plastic material, such as PVC or silicone.

[0118] The specific process of the testing method of the film material of the present invention will be introduced in more detail below.

[0119] During the testing process, the permeabilities of the first film material 20, the second film material 202, and the third film material 302 here are the same, the leakage rates of the first sealing strip, the second sealing strip, and the third sealing strip here are also the same, and the leak rates of the first vacuum gauge connection port 40, the second vacuum gauge connection port 204, and the third vacuum gauge connection port 304 are also the same.

[0120] In an embodiment of the present invention, the leakage rate of the sealing strip per unit area is set as x, the permeability of the film material per unit area is y, the leakage rate of the vacuum gauge connection port is z, the first leakage rate of the first test assembly 100 is M1, the second leakage rate of the second test assembly 200 is M2, and the third leakage rate of the third test assembly 300 is M3. Among them, M1 is obtained according to the change rate of the volume and internal pressure inside the first hollow cavity 60, and the unit is Pa·L / s.

[0121] During the test, first use the first test assembly 100 for testing. Set the first film material 20 and the first sealing strip on the outer surface of the first support body 10 respectively, connect them to the vacuum pumping device through the first vacuum gauge connection port 40, and perform a vacuum pumping operation on the first hollow cavity 60. Record the reading of the vacuum pumping device and the time of vacuum pumping to obtain the internal pressure change rate, and obtain the first leakage rate M1 according to the volume of the first accommodation space 50.

[0122] Use the second test assembly 200 for testing. Set the second film material 202 and the second sealing strip on the outer surface of the second support body 201 respectively, connect them to the vacuum pumping device through the second vacuum gauge connection port 204, and perform a vacuum pumping operation on the second hollow cavity 206. Record the reading of the vacuum pumping device and the time of vacuum pumping to obtain the internal pressure change rate, and obtain the second leakage rate M2 according to the volume of the second accommodation space 205.

[0123] After splicing the first support body 10 and the second support body 201 into the third support body 301, use a similar method to obtain the third leakage rate M3.

[0124] Establish a system of ternary equations.

[0125] 2x·(a + b)·h + 2y·(a + b) + z = M1

[0126] 2x·(a + c)·h + 2y·a·c + z = M2

[0127] 2x·(a + b + c)·h + 2y·(b + c)·a + 2z = M3

[0128] Solve the above system of ternary equations to obtain the values of x, y, and z, so as to obtain the permeability y of the film material per unit area, and thus obtain the quantitative data of the permeability of the film material per unit area. In addition, the leakage rate of the first vacuum gauge connection port 40 can also be calculated through the obtained data z.

[0129] In a second aspect of the embodiments of the present invention, a testing device for a membrane material is proposed. The testing device for the membrane material includes a first testing component 100, a second testing component 200, an acquisition component, and a calculation component. The first testing component 100 includes a first support body 10, a first sealing member 30, and a first vacuum gauge connection port 40. A first membrane material 20 having a first area is disposed on at least a part of the surface of the first support body 10, and a first sealing member 30 is disposed outside the first support body 10. The first sealing member 30 and the first membrane material 20 form a first accommodation space 50, and the first support body 10 is located within the first accommodation space 50. A first vacuum gauge connection port 40 is disposed on at least one of the first membrane material 20 and the first sealing member 30, wherein the first vacuum gauge connection port 40 communicates with the first accommodation space 50. The second testing component 200 includes a second support body 201, a second sealing member 203, and a second vacuum gauge connection port 204. A second membrane material 202 having a second area is disposed on at least a part of the surface of the second support body 201, wherein the first area is different from the second area, and the first membrane material 20 and the second membrane material 202 are membrane materials having the same properties. A second sealing member 203 is disposed outside the second support body 201. The second sealing member 203 and the second membrane material 202 form a second accommodation space 205, and the second support body 201 is located within the second accommodation space 205. A second vacuum gauge connection port 204 is disposed on at least one of the second membrane material 202 and the second sealing member 203, wherein the second vacuum gauge connection port 204 communicates with the second accommodation space 205. It is configured to obtain a first leakage rate of the first testing component 100 and a second leakage rate of the second testing component 200 after respectively connecting the first vacuum gauge connection port 40 and the second vacuum gauge connection port 204 to a vacuum pumping device. It is configured to obtain the permeability of the membrane material per unit area of the first membrane material 20 based on the first leakage rate and the second leakage rate.

[0130] For other functions of the testing device, reference can be made to the relevant introduction in the testing method of the membrane material, and no repeated introduction will be made here.

[0131] For the structure of other parts of this application, reference can be made to the prior art, and no further elaboration will be made here.

[0132] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A testing method for a membrane material, characterized in that The membrane material includes a first membrane material with a first area and a second membrane material with a second area. The first membrane material and the second membrane material are membrane materials with the same properties. The testing method of the membrane material includes: Providing a first testing component, which includes a first support body, a first sealing member, and a first vacuum gauge connection port; Setting the first membrane material on at least part of the surface of the first support body, and arranging a first sealing member outside the first support body. The first sealing member and the first membrane material form a first accommodation space, and the first support body is located within the first accommodation space; Arranging the first vacuum gauge connection port on at least one of the first membrane material and the first sealing member to communicate the first vacuum gauge connection port with the first accommodation space; Providing a second testing component, which includes a second support body, a second sealing member, and a second vacuum gauge connection port; Setting the second membrane material on at least part of the surface of the second support body, where the first area is different from the second area; and arranging a second sealing member outside the second support body. The second sealing member and the second membrane material form a second accommodation space, and the second support body is located within the second accommodation space; Arranging the second vacuum gauge connection port on at least one of the second membrane material and the second sealing member to communicate the second vacuum gauge connection port with the second accommodation space; Connecting the first vacuum gauge connection port and the second vacuum gauge connection port to a vacuum pumping device respectively to obtain a first leakage rate of the first testing component and a second leakage rate of the second testing component; Obtaining the permeability of the first membrane material per unit area of the membrane material according to the first leakage rate and the second leakage rate.

2. The testing method of the film material according to claim 1, characterized in that, A first hollow cavity is provided inside the first support body, and the first support body includes a first surface and a second surface oppositely arranged in the vertical direction. Among them, a first through hole communicating with the first hollow cavity is provided on the first surface, and a second through hole communicating with the first hollow cavity is provided on the second surface; the first membrane material is arranged on both the first surface and the second surface.

3. The testing method of the film material according to claim 2, characterized in that The first sealing member includes a first sealing strip. The first sealing strip is arranged on the circumferential outer surface of the first support body, and the first sealing strip is connected to the first membrane material arranged on the first surface and the first membrane material arranged on the second surface.

4. The testing method of the film material according to claim 2, characterized in that, A second hollow cavity is provided inside the second support body. The second support body includes a third surface and a fourth surface oppositely arranged in the vertical direction. Among them, a third through hole communicating with the second hollow cavity is provided on the third surface, and a fourth through hole communicating with the second hollow cavity is provided on the fourth surface; the second membrane material is arranged on both the third surface and the fourth surface.

5. The testing method of the film material according to claim 4, wherein The second sealing member includes a second sealing strip. The second sealing strip is arranged on the circumferential outer surface of the second support body, and the second sealing strip is connected to the second membrane material arranged on the third surface and the second membrane material arranged on the fourth surface.

6. The testing method of the film material according to claim 1, characterized in that, The first support body and the second support body are both rectangular structures. In a direction perpendicular to the length direction of the first support body, the first support body has a first cross-section. In a direction perpendicular to the length direction of the second support body, the second support body has a second cross-section. The shapes and sizes of the first cross-section and the second cross-section are the same, and the length of the first support body is different from the length of the second support body.

7. The testing method of the film material according to claim 4, characterized in that The film material further includes a third film material having a third area. The first film material and the third film material are film materials with the same properties, and the third area is different from both the first area and the second area. The testing method of the film material further includes: providing a third testing assembly, the third testing assembly including a third support body, a third sealing member, and a third vacuum gauge connection port; arranging the third film material on at least a part of the surface of the third support body; and arranging a third sealing member outside the third support body, the third sealing member and the third film material forming a third accommodation space, and the third support body being located in the third accommodation space; arranging the third vacuum gauge connection port on at least one of the third film material and the third sealing member, so that the third vacuum gauge connection port communicates with the third accommodation space; connecting the third vacuum gauge connection port to the vacuum pumping device and obtaining a third leak rate of the third testing assembly; obtaining the permeability of the first film material per unit area of the film material according to the first leak rate, the second leak rate, and the third leak rate.

8. The testing method of the film material according to claim 7, characterized in that The third support body is formed by splicing the first support body and the second support body, and the first hollow cavity and the second hollow cavity are in a communicating state.

9. The testing method of the film material according to claim 7, characterized in that, The third testing assembly includes at least two of the third vacuum gauge connection ports, wherein at least one of the third vacuum gauge connection ports is arranged on the third film material.

10. The testing method of the film material according to claim 7, characterized in that, Obtaining the permeability of the first film material per unit area of the film material according to the first leak rate, the second leak rate, and the third leak rate specifically includes: obtaining the total area of the first sealing member and the total area of the first film material; obtaining the total area of the second sealing member and the total area of the second film material; obtaining the total area of the third sealing member and the total area of the third film material; determining the permeability of the first film material per unit area of the film material according to the total area of the first sealing member, the total area of the first film material, the total area of the second sealing member, the total area of the second film material, the total area of the third sealing member, the total area of the third film material, and the leak rate of the first vacuum gauge connection port, wherein the leak rates of the first vacuum gauge connection port, the second vacuum gauge connection port, and the third vacuum gauge connection port are the same.

11. The testing method of the film material according to any one of claims 1 to 10, characterized in that, setting the outer end corner position of the first support body to a smooth structure, and / or setting the outer end corner position of the second support body to a smooth structure.

12. A testing device for a membrane material, characterized in that For implementing the testing method according to any one of claims 1 to 11, the testing device for the film material includes: A first test component, the first test component includes a first support body, a first sealing member, and a first vacuum gauge connection port. The first film material is disposed on at least a part of the surface of the first support body, and a first sealing member is disposed outside the first support body. The first sealing member and the first film material form a first accommodation space, and the first support body is located within the first accommodation space. At least one of the first film material and the first sealing member is provided with a first vacuum gauge connection port, wherein the first vacuum gauge connection port communicates with the first accommodation space; A second test component, the second test component includes a second support body, a second sealing member, and a second vacuum gauge connection port. The second film material is disposed on at least a part of the surface of the second test component, wherein the first area is different from the second area. And a second sealing member is disposed outside the second support body. The second sealing member and the second film material form a second accommodation space, and the second support body is located within the second accommodation space. At least one of the second film material and the second sealing member is provided with a second vacuum gauge connection port, wherein the second vacuum gauge connection port communicates with the second accommodation space; An acquisition component for obtaining a first leak rate of the first test component and a second leak rate of the second test component after respectively connecting the first vacuum gauge connection port and the second vacuum gauge connection port to a vacuum pumping device; and A calculation component for obtaining the permeability of the unit area film material of the first film material according to the first leak rate and the second leak rate.

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