Repair method and device of composite diaphragm, storage medium and electronic device

Abstract

The invention discloses a composite diaphragm repairing method and device, a storage medium and an electronic device.The method comprises the steps that a to-be-repaired composite diaphragm is obtained, and the to-be-repaired composite diaphragm has surface defects; the to-be-repaired composite diaphragm is detected, defect information associated with the surface layer defect is obtained, and the defect information is used for indicating the defect degree and position of the surface layer defect on the to-be-repaired composite diaphragm; based on the defect information and the material information of the to-be-repaired composite diaphragm, determining a coating material for repairing the surface defects; the to-be-repaired composite diaphragm is coated with a coating material, the coated composite diaphragm is obtained, and the coating material is evenly combined with the surface layer defects; and curing the coated composite diaphragm to obtain a cured composite diaphragm, and cleaning and drying the cured composite diaphragm to obtain the repaired composite diaphragm. The technical problem that the repairing efficiency of the composite diaphragm is low in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the field of computers, and in particular, to a composite diaphragm repair method, device, storage medium and electronic device. Background Art

[0002] In the process of producing hydrogen by alkaline water electrolysis, the composite diaphragm is the core component of the electrolyzer, and its surface defects (such as holes and cracks) will seriously affect the electrolysis efficiency, hydrogen purity and system safety. In traditional methods, once defects are found in the composite diaphragm, it is usually discarded or replaced, which not only causes huge waste of raw materials and increases production costs, but also may affect the operating stability of the electrolyzer due to frequent replacement of the diaphragm. In addition, the treatment of defective diaphragms will also cause environmental pollution problems. Therefore, how to effectively repair the surface defects of the composite diaphragm, avoid these problems, and ensure that the performance of the repaired diaphragm meets the use requirements has become a technical problem that needs to be solved in this field.

[0003] Therefore, the related art has the problem of low repair efficiency of the composite diaphragm. Summary of the invention

[0004] The embodiments of the present application provide a composite diaphragm repair method, device, storage medium and electronic device to at least solve the technical problem of low composite diaphragm repair efficiency in the related art.

[0005] According to one aspect of an embodiment of the present application, a method for repairing a composite diaphragm is provided, comprising: obtaining a composite diaphragm to be repaired, wherein the composite diaphragm to be repaired has a surface defect; detecting the composite diaphragm to be repaired to obtain defect information associated with the surface defect, wherein the defect information is used to indicate the extent and position of the surface defect on the composite diaphragm to be repaired; determining a coating material for repairing the surface defect based on the defect information and material information of the composite diaphragm to be repaired; coating the composite diaphragm to be repaired with the coating material to obtain a coated composite diaphragm, wherein the coating material is uniformly combined with the surface defect; performing a curing operation on the coated composite diaphragm to obtain a cured composite diaphragm, and cleaning and drying the cured composite diaphragm to obtain a repaired composite diaphragm.

[0006] According to another aspect of an embodiment of the present application, a composite diaphragm repairing device is also provided, including: an acquisition unit, used to acquire a composite diaphragm to be repaired, wherein the composite diaphragm to be repaired has surface defects; a detection unit, used to detect the composite diaphragm to be repaired, and obtain defect information associated with the surface defects, wherein the defect information is used to indicate the extent and position of the surface defects on the composite diaphragm to be repaired; a determination unit, used to determine a coating material for repairing the surface defects based on the defect information and material information of the composite diaphragm to be repaired; a coating unit, used to coat the composite diaphragm to be repaired with the coating material to obtain a coated composite diaphragm, wherein the coating material is uniformly combined with the surface defects; a repair unit, used to perform a curing operation on the coated composite diaphragm to obtain a cured composite diaphragm, and to clean and dry the cured composite diaphragm to obtain a repaired composite diaphragm.

[0007] According to another aspect of the embodiment of the present application, a computer program product or a computer program is provided, the computer program product or the computer program comprising computer instructions, the computer instructions being stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the above-mentioned composite diaphragm repair method.

[0008] According to another aspect of the embodiment of the present application, there is also provided an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the composite diaphragm repair method through the computer program.

[0009] Through the embodiments provided in this application, a matching coating material is selected according to the test results and the diaphragm material information to ensure that the repair material can form a good combination with the diaphragm, and at the same time has corrosion resistance, adhesion and suitable ion conductivity, and effectively restores the function of the diaphragm. The selected coating material is used to evenly coat the diaphragm defects, and the coating thickness and uniformity are precisely controlled to ensure that the repair material is tightly combined with the diaphragm surface. The subsequent curing treatment further strengthens the bonding strength and improves the repair efficiency and quality. The repaired diaphragm is cleaned and dried to remove excess coating materials and residues, ensure the smoothness and cleanliness of the diaphragm surface, and avoid the possible influence of solvent residue on the electrolytic performance. Through the above technical scheme, the surface defects of the composite diaphragm are effectively repaired, which not only significantly improves the quality of the diaphragm and the operating efficiency of the hydrogen production system, but also optimizes the production process and reduces the production cost, thereby achieving the technical effect of improving the efficiency of composite diaphragm repair, and solving the technical problem of low efficiency of composite diaphragm repair in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0012] Figure 1 is a schematic diagram of a method for repairing a composite diaphragm according to an embodiment of the present application;

[0013] Figure 2 is a schematic diagram of a composite diaphragm repair device according to an embodiment of the present invention;

[0014] Figure 3 is a schematic structural diagram of an optional electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0016] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0017] Optionally, as an optional implementation, as Figure 1 As shown, the repair method of the composite diaphragm includes:

[0018] S102, obtaining a composite diaphragm to be repaired, wherein the composite diaphragm to be repaired has surface defects;

[0019] S104, inspecting the composite diaphragm to be repaired to obtain defect information associated with the surface defect, wherein the defect information is used to indicate the extent and location of the surface defect on the composite diaphragm to be repaired;

[0020] S106, determining a coating material for repairing the surface defects based on the defect information and the material information of the composite diaphragm to be repaired;

[0021] S108, coating the composite diaphragm to be repaired with a coating material to obtain a coated composite diaphragm, wherein the coating material is uniformly combined with the surface defects;

[0022] S110, performing a curing operation on the coated composite diaphragm to obtain a cured composite diaphragm, and performing a cleaning and drying process on the cured composite diaphragm to obtain a repaired composite diaphragm.

[0023] Optionally, in this embodiment, the composite membrane refers to a membrane composed of an organic high molecular polymer, an inorganic filler and a support layer, which is used for hydrogen and oxygen separation in the process of producing hydrogen by alkaline water electrolysis and has good ion conductivity and chemical stability.

[0024] Optionally, in this embodiment, the surface defects are surface damages that may occur in the production process of the composite diaphragm, such as holes, cracks, etc., which affect the performance and safety of the diaphragm.

[0025] Optionally, in this embodiment, the defect information is a specific description of the surface defects of the composite diaphragm obtained through detection, including the degree, location and size of the defects.

[0026] Optionally, in this embodiment, the coating material is a material used to repair surface defects of the composite diaphragm, which needs to be compatible with the diaphragm material, have good adhesion and corrosion resistance, and be able to effectively restore the performance of the diaphragm.

[0027] Optionally, in this embodiment, first, it is necessary to select a sheet or a section of a composite diaphragm with surface damage (such as holes, cracks) as the repair object. These damages may be caused during the production process due to various reasons (such as improper process control, incomplete degassing, uneven slurry dispersion, etc.).

[0028] Next, use specific detection methods (such as backlight detection and microscope observation) to carefully inspect the damaged area of ​​the composite diaphragm, and record the specific location, size and degree of damage of the holes and cracks to determine the necessity of repair and the formulation of a repair plan.

[0029] According to the detected defect information, combined with the material characteristics of the composite diaphragm (such as polysulfone, zirconium oxide, etc.), select the appropriate coating material for repair. The selected material must have good adhesion to ensure close bonding with the diaphragm surface and be corrosion-resistant to adapt to the alkaline electrolyzed water environment. Spray, brush or scrape the selected repair material evenly on the defective area of ​​the composite diaphragm, control the thickness and uniformity of the coating, ensure that the material fully fills the defect and forms a close bond, and avoid poor repair results caused by too thick or too thin.

[0030] After the coating material is applied, a curing treatment is required, such as immersing the membrane in a specific non-solvent to cause the material to gel and form a solidified layer that is firmly bonded to the membrane surface. Subsequently, the membrane needs to be cleaned (to remove residual solvents and impurities) and dried (to eliminate internal moisture and restore membrane performance) to ensure that the repaired membrane surface is smooth and clean, and the coating material is fully integrated, thereby restoring the membrane's ion conductivity and gas barrier properties.

[0031] It should be noted that this embodiment aims to solve the common surface defect problem in the production process of alkaline water electrolysis hydrogen production composite diaphragm, and realizes efficient repair of composite diaphragm defects through a series of precise pretreatment, detection, repair material selection, coating, curing, post-treatment and quality inspection steps. Specifically, the defective diaphragm is first pretreated (dried and cleaned) to remove moisture, solvents and surface impurities to provide a clean surface for subsequent repair. Then, the location, type and severity of the defect are accurately identified by detection means to provide necessary information support for the repair operation. After that, according to the defect information and the diaphragm material, a suitable repair material is selected to ensure the compatibility and repair effect of the material and the diaphragm. The repair material is accurately coated on the defective area to cover and fill the defect, and the subsequent curing treatment further enhances the combination of the material and the diaphragm to form a stable repair layer. Finally, through cleaning and drying treatment, excess coating materials and residues are removed to ensure the smoothness and cleanliness of the diaphragm surface and restore the performance of the diaphragm to the best state.

[0032] Through the embodiments provided in this application, a matching coating material is selected according to the test results and the diaphragm material information to ensure that the repair material can form a good combination with the diaphragm, and at the same time has corrosion resistance, adhesion and suitable ion conductivity, effectively restoring the function of the diaphragm. The selected coating material is used to evenly coat the diaphragm defects, and the coating thickness and uniformity are precisely controlled to ensure that the repair material is tightly combined with the diaphragm surface. The subsequent curing treatment further strengthens the bonding strength and improves the repair efficiency and quality. The repaired diaphragm is cleaned and dried to remove excess coating materials and residues, ensure the smoothness and cleanliness of the diaphragm surface, and avoid the possible influence of solvent residues on the electrolytic performance. Through the above technical scheme, the surface defects of the composite diaphragm are effectively repaired, which not only significantly improves the quality of the diaphragm and the operating efficiency of the hydrogen production system, but also optimizes the production process and reduces production costs, thereby achieving the technical effect of improving the efficiency of composite diaphragm repair.

[0033] As an optional solution, a coating material is used to coat the composite diaphragm to be repaired to obtain a coated composite diaphragm, including:

[0034] At a preset coating temperature, coating the coating material on the composite diaphragm to be repaired to obtain a composite diaphragm with a preset thickness;

[0035] A pre-evaporation operation is performed on a composite membrane of a preset thickness for a preset time to obtain a coated composite membrane.

[0036] Optionally, in this embodiment, the preset coating temperature refers to the controlled temperature when the coating material contacts the surface of the diaphragm during the coating operation. The temperature needs to be moderate to ensure the fluidity and viscosity of the material and to ensure the uniformity of the coating and the repair effect.

[0037] Optionally, in this embodiment, the preset thickness is the expected thickness of the coating material on the diaphragm surface that is preset according to the specific situation of the diaphragm defect and the repair goal. The setting of this thickness needs to be precisely controlled to avoid being too thick or too thin, which affects the performance of the composite diaphragm.

[0038] Optionally, in this embodiment, the pre-evaporation operation refers to placing the membrane in the air for a certain period of time after coating the repair material, so that the solvent in the coating material partially evaporates, promotes phase separation of the material, and forms a more stable coating structure.

[0039] It should be noted that before applying the repair material, the preset coating temperature is a key factor to ensure good material fluidity and appropriate viscosity, which directly affects the bonding effect between the repair material and the diaphragm surface. By precisely controlling the temperature and coating method of the coating material, the defects of the diaphragm can be accurately covered and filled to meet the preset repair layer thickness requirements. The repair layer not only needs to fill the defects, but also should be consistent with the original structure of the diaphragm to avoid introducing new problems due to the repair layer being too thick or too thin, such as increasing the surface resistance of the diaphragm or affecting its ion conductivity.

[0040] It should also be noted that the pre-evaporation operation is a key pretreatment after the coating step. It controls the evaporation rate of the solvent on the surface of the coating material to promote phase separation inside the material, thereby forming a repair layer with a dense surface cortex and a sub-layer finger-like pore structure. This structure is conducive to enhancing the bonding strength between the coating and the diaphragm substrate and improving the stability and durability of the repair layer. The length of the pre-evaporation time needs to be adjusted according to the properties of the coating material and environmental conditions to ensure the uniformity and structural stability of the coating, avoid the generation of bubbles inside the coating or surface cracks, and create favorable conditions for subsequent curing treatment.

[0041] As an optional solution, the preset coating temperature is set to 30° C. to 60° C., the preset thickness is set to 200 μm to 550 μm, and the preset time is set to 15 s to 120 s.

[0042] Optionally, in this embodiment, the preset coating temperature is set to 30°C to 60°C. During the repair operation, the temperature of the coating material is controlled between 30°C and 60°C. The selection of this temperature range is based on the optimal balance between the fluidity and viscosity of the material. If the temperature is too low, the viscosity of the coating material increases, which may affect the uniform distribution of the material on the surface of the composite diaphragm, resulting in uneven coating and poor repair effect; if the temperature is too high, it may accelerate the volatilization of the solvent, affecting the wettability and adhesion of the material on the surface of the diaphragm, and is also not conducive to the formation of the repair layer. Between 30°C and 60°C, it can ensure that the coating material has suitable fluidity and viscosity, which is beneficial to the uniform coating of the material on the surface of the diaphragm, and can ensure good bonding between the material and the surface of the diaphragm, thereby improving the uniformity of the repair layer and the repair efficiency.

[0043] Optionally, in this embodiment, the preset thickness is set to 200μm to 550μm. The thickness of the composite diaphragm repair layer is controlled between 200μm and 550μm. This thickness range is intended to maintain a balance between the effectiveness of the repair layer and the original performance of the diaphragm. If the coating is too thin, it may not be enough to completely cover and repair the surface defects of the composite diaphragm, affecting the ion conductivity and gas barrier properties of the diaphragm; if the coating is too thick, it may cause the overall strength of the diaphragm to decrease, increase the surface resistance of the diaphragm, and reduce the operating efficiency of the electrolyzer. The repair layer set between 200μm and 550μm can effectively cover and fill defects such as holes and cracks on the surface of the diaphragm, while maintaining the original ion transmission properties of the diaphragm, ensuring that the repaired diaphragm can still maintain an efficient and stable working state during the alkaline water electrolysis hydrogen production process.

[0044] Optionally, in this embodiment, the preset time is set to 15s to 120s. The duration of the pre-evaporation operation performed after coating the repair material is controlled to be between 15 seconds and 120 seconds. The length of the pre-evaporation time directly affects the evaporation rate of the solvent in the coating material and the degree of phase separation. If the time is too short, the solvent will not evaporate enough and the structural stability of the repair layer will be poor; if the time is too long, the coating surface may be too dry or the internal solvent may evaporate excessively, affecting the bonding strength between the repair layer and the diaphragm. Pre-evaporation performed between 15 seconds and 120 seconds can ensure that the solvent in the coating material evaporates in an appropriate amount, promote phase separation inside the repair material, and form a repair layer structure with a dense surface and porous interior. This structure not only improves the barrier properties of the repair layer, but also maintains good ion transmission properties, thereby improving the repair quality and the overall performance of the diaphragm.

[0045] As an optional solution, based on the defect information and the material information of the composite diaphragm to be repaired, the coating material used to repair the surface defects is determined, including:

[0046] Determine at least two casting liquid materials based on the defect information and the material information;

[0047] According to a preset ratio, at least two casting liquid materials are placed in a container for heating, and fully dissolved and stirred to obtain a preliminary fusion material, wherein the heating temperature is set to 50°C to 80°C, the stirring speed is set to 100 to 300 r / min, and the stirring time is set to 12 to 36 hours;

[0048] The preliminary fused material is subjected to evacuation treatment to obtain a coating material, wherein the evacuation treatment is used to remove tiny bubbles inside the preliminary fused material.

[0049] Optionally, in this embodiment, the casting liquid material refers to the raw materials used to prepare the composite diaphragm repair coating, including polymers, solvents and inorganic fillers, etc. It needs to be compatible with the material of the composite diaphragm, have good adhesion and corrosion resistance, and be able to effectively restore the diaphragm performance.

[0050] Optionally, in this embodiment, the preliminary fusion material refers to a mixture obtained by mixing at least two casting liquid materials in a preset ratio and heating, dissolving and stirring. At this stage, the material has not been completely degassed and needs to be further processed to form a coating material.

[0051] Optionally, in this embodiment, the evacuation process refers to degassing the preliminary fused material under vacuum conditions, the purpose of which is to remove tiny bubbles inside the material and ensure the structural stability and adhesion of the repair coating.

[0052] It can be understood that in this embodiment, based on the defect information and material properties of the composite diaphragm, the determination of at least two casting liquid materials ensures the compatibility of the repair material and the diaphragm, as well as the pertinence of the repair operation. Under specific heating and stirring conditions (heating temperature of 50°C to 80°C, stirring speed of 100 to 300r / min, stirring time of 12 to 36h), the casting liquid material is fully dissolved and mixed to form a preliminary fusion material. The mixing uniformity and structural stability of the materials at this stage are crucial to the formation of the repair layer. The subsequent vacuum treatment (degassing operation) further optimizes the structure of the repair material, removes internal tiny bubbles, avoids possible pores in the repair layer, ensures the density and uniformity of the repair layer, and improves the performance and reliability of the repaired diaphragm.

[0053] Through the embodiments provided in the present application, a repair material with stable performance that matches the composite diaphragm material can be prepared, which can effectively fill and repair defects such as holes and cracks on the surface of the diaphragm, restore the barrier properties and ion conductivity of the diaphragm, and improve the efficiency and safety of the diaphragm.

[0054] As an optional solution, curing the coated composite diaphragm to obtain a cured composite diaphragm includes:

[0055] The coated composite membrane is placed in deionized water to obtain a cured composite membrane, wherein the temperature of the deionized water is set to 30° C. to 80° C., and the solvent and the non-solvent are exchanged in the deionized water to cure the liquid film of the coated composite membrane.

[0056] Optionally, in this embodiment, the curing operation is used to indicate that in the composite diaphragm repair process, the diaphragm coated with the repair material is placed under specific conditions (such as deionized water at a specific temperature) for treatment, so as to promote the exchange of solvent and non-solvent in the repair material, thereby achieving a transition from a liquid film to a solid structure, thereby enhancing the bonding strength between the repair layer and the diaphragm matrix.

[0057] Optionally, in this embodiment, deionized water refers to high-purity water from which ionic impurities have been removed, and is often used as a solvent or cleaning medium in chemical experiments and industrial production. Due to its low ion content, it can avoid ion contamination of composite membranes and repair materials, affecting membrane performance.

[0058] Optionally, in this embodiment, the non-solvent refers to a medium used to promote the volatilization of the solvent in the repair material and accelerate the phase separation of the material during the curing operation. Deionized water acts as a non-solvent in this curing process, and accelerates the curing of the repair material through exchange with the solvent to form a stable solid repair layer.

[0059] It is understandable that in this embodiment, the curing operation is carried out by placing the composite diaphragm coated with the repair material into deionized water at a set temperature (30°C to 80°C). This process promotes the transformation of the repair material from liquid to solid through the exchange of solvent and non-solvent (deionized water), forming a dense and stable repair layer. The temperature setting of the curing operation needs to take into account the curing efficiency of the repair material and the heat resistance of the diaphragm to avoid deformation of the diaphragm or degradation of the performance of the repair layer due to excessive temperature. Curing in deionized water avoids possible ion contamination and ensures the chemical purity of the repair layer, thereby not affecting the ion conductivity and gas barrier properties of the diaphragm. In addition, the exchange process of solvent and non-solvent accelerates the phase separation of the repair material, forming a structure with a dense surface and porous interior. This structure not only enhances the bonding force between the repair layer and the composite diaphragm, but also maintains good ion transmission performance, thereby improving the overall performance and service life of the composite diaphragm.

[0060] Through the curing operation described in claim 5, the effective combination of the repair material and the composite diaphragm is ensured, a stable and dense repair layer is formed, the performance of the diaphragm is restored, and the use efficiency and safety of the diaphragm are improved.

[0061] As an optional solution, the cured composite diaphragm is cleaned and dried, including:

[0062] The solidified composite diaphragm is placed in multiple high-purity deionized immersion waters in succession until the current deionized immersion water remains transparent during the immersion time of the solidified composite diaphragm. If the current deionized immersion water becomes turbid during the immersion time, the solidified composite diaphragm is taken out and placed in the next deionized immersion water.

[0063] Optionally, in this embodiment, the uncured composite diaphragm refers to a composite diaphragm that has formed a stable repair layer after the repair material is applied and the curing operation is completed. At this time, the defects on the surface of the diaphragm have been repaired, but solvents, tiny impurities, etc. may remain on the surface and need to be cleaned and dried.

[0064] Optionally, in this embodiment, high-purity deionized water is high-purity water from which electrolyte ions have been removed, and is used to clean the cured composite diaphragm to ensure that there are no ion residues on the surface of the diaphragm and that the ionic conductivity and chemical stability of the diaphragm are not affected.

[0065] Optionally, in this embodiment, the immersion time is the duration of immersion of the composite membrane in high-purity deionized water, which is used to dissolve and remove solvents, impurities, etc. on the surface and inside of the membrane. Reasonable setting of the immersion time can ensure the cleaning effect while avoiding performance degradation caused by long-term immersion of the membrane.

[0066] It is understandable that in this embodiment, during the cleaning process, by sequentially immersing the cured composite diaphragm in multiple high-purity deionized waters, the residual solvent and tiny impurities on the surface and inside of the diaphragm are effectively removed, the chemical purity of the repair layer is ensured, and the adverse effects of the residue on the performance of the diaphragm, such as reducing ion conductivity or affecting the gas barrier properties of the diaphragm, are avoided. During the cleaning process, it is necessary to pay close attention to the transparency changes of the deionized water. Once the water is found to be turbid, it means that there are still solvents or impurities that need to be removed in the diaphragm. At this time, new deionized water should be replaced in time until the water replaced for the last few times remains clear and transparent after the diaphragm is soaked, so that it can be concluded that the surface of the diaphragm has been thoroughly cleaned. The subsequent drying process is a necessary step after cleaning. By controlling the appropriate temperature and time, the residual moisture inside the diaphragm is removed to prevent the long-term negative impact of moisture on the performance of the diaphragm, such as reducing the strength of the diaphragm or causing electrolyte contamination. The cleaning and drying treatment not only improves the surface smoothness and cleanliness of the composite diaphragm, but also ensures the overall performance of the diaphragm, which is of great significance for improving the utilization efficiency of the diaphragm, reducing operating costs, and enhancing the safety and economy of the alkaline water electrolysis hydrogen production process.

[0067] As an optional solution, before obtaining the composite diaphragm to be repaired, the method further includes:

[0068] obtaining a composite diaphragm to be tested;

[0069] The composite diaphragm to be tested is dried and cleaned in turn, wherein the drying temperature is set at 40°C to 80°C, the drying time is set at 5min to 20min, and the cleaning agent is set at ethanol solution;

[0070] After the drying and cleaning processes, the composite diaphragms to be inspected are subjected to mobile irradiation observation to identify the composite diaphragms to be repaired that have surface defects.

[0071] Optionally, in this embodiment, the composite diaphragm after production is obtained from the production line and used as the diaphragm to be tested for subsequent drying and cleaning. The drying operation is carried out at a set temperature (40°C to 80°C) and time (5min to 20min) to completely remove moisture and solvents in the diaphragm, ensure that the surface of the diaphragm is dry, and provide favorable conditions for subsequent cleaning and defect detection. The cleaning operation uses an ethanol solution and a dust-free cloth to wipe the surface of the diaphragm to remove impurities and oil stains on the surface and improve the adhesion of the repair material. After drying and cleaning, mobile irradiation observation is performed, that is, a backlight is used to fully illuminate the bottom of the diaphragm, and the light and dark changes of the light are observed to preliminarily detect whether there are defects such as holes and cracks on the surface of the composite diaphragm. If defects are found, the diaphragm becomes a composite diaphragm to be repaired and enters the subsequent repair process.

[0072] As an optional solution, the above-mentioned composite diaphragm repair method is applied to a repair scenario of a defective or defective composite diaphragm for hydrogen production by alkaline water electrolysis. In this scenario, hydrogen energy, as a clean, efficient and renewable energy form, is increasingly attracting people's attention. As an important link in the hydrogen energy industry, the technical maturity and economy of hydrogen production by alkaline water electrolysis play a decisive role in the large-scale development of the hydrogen energy industry. However, in the process of hydrogen production by alkaline water electrolysis, the diaphragm is one of the core components of the electrolyzer, and its performance stability and reliability are directly related to the operating efficiency and safety of the electrolyzer. The diaphragm mainly plays a role in blocking the mixing of hydrogen and oxygen in the alkaline electrolyzer, while maintaining the free transmission of electrolytes. Therefore, ion transmission performance and gas barrier performance are recognized as key performance indicators for evaluating diaphragm performance. The ion transmission performance directly affects the hydrogen production energy consumption of the alkaline electrolyzer, while the gas barrier performance reflects the gas purity and safety of the hydrogen production system. In essence, the composite diaphragm is a typical porous diaphragm. Since it does not have electrical conductivity, it mainly relies on the electrolyte filled in the pores of the diaphragm material to achieve ion transmission. The ion transmission performance is mainly affected by two factors: the pore structure and wetting characteristics of the diaphragm. The gas barrier performance (bubble point pressure) of the diaphragm is inversely proportional to the pore size of the membrane material, and the gas barrier performance of the diaphragm only depends on the maximum through-hole diameter of the diaphragm.

[0073] The composite membranes currently being researched and produced mainly include three parts: organic polymers as binders, nano-inorganic oxide particles as inorganic fillers, and a supporting layer. Among them, organic polymers mostly use high temperature resistance, alkali corrosion resistance good polymer materials such as polysulfone (PSF), polyethersulfone (PES), polytetrafluoroethylene (PTFE), polyphenylene ether (PPO), polyetheretherketone (PEEK), etc. Nano-inorganic oxide particles usually use chemically stable and hydrophilic metal oxide nanoparticles such as TiO2, ZrO2, Y2O3, CeO2, etc. The supporting layer mostly uses polyphenylene sulfide (PPS) fabric with good stability and corrosion resistance. Therefore, the composite membrane combines the advantages of both organic and inorganic materials, has good high temperature resistance, alkali corrosion resistance and stability, and has low surface resistance. It is an ideal membrane to replace asbestos diaphragms and organic diaphragms, and has become a mainstream product.

[0074] Alkaline water electrolysis hydrogen production composite diaphragm is a key material used to separate the cathode and anode in the electrolyzer to prevent the mixing of hydrogen and oxygen. The diaphragm is usually composed of a polymer and an inorganic filler, and has good ion conductivity, chemical stability and strength. In the process of alkaline water electrolysis hydrogen production, the composite diaphragm is a key component, and its performance directly affects the electrolysis efficiency and hydrogen purity. However, with the continuous expansion of the scale and area of ​​alkaline electrolyzer hydrogen production equipment of various manufacturers in recent years, in the production and preparation process of composite diaphragms, current studies have been conducted to obtain reinforced composite diaphragms through single-sided scraping or double-sided scraping molding. Due to various reasons (such as improper process control, incomplete degassing, uneven dispersion of coating slurry, material quality problems, etc.), there are many surface defects, and production defects or defects such as holes and cracks may occur. These problems will seriously affect the performance of the composite diaphragm and pose a serious threat to safety in use. If these defects or defects are not effectively repaired, it will cause a large amount of waste of production raw materials and environmental pollution. Therefore, developing an effective repair method is of great significance for improving the quality of composite membranes and saving preparation costs.

[0075] Therefore, timely and effective repair of the defects or flaws that may occur in the composite diaphragm during the production and preparation process is of vital importance to ensure the stable operation of the electrolyzer and improve the economic benefits of the hydrogen energy industry.

[0076] Optionally, in this embodiment, a method for repairing a defect or imperfection in an alkaline water electrolysis hydrogen production diaphragm is provided. The method uses a coating material to repair the defect or imperfection in the diaphragm, and has the advantages of simple operation and low cost.

[0077] Specifically, a method for repairing a defect or defect of an alkaline water electrolysis hydrogen production composite diaphragm comprises the following steps:

[0078] Step 1: Diaphragm pretreatment.

[0079] Dry and clean the produced diaphragm. Dry and clean the surface of the single or continuous diaphragm produced by the formulated alkaline water electrolysis hydrogen production composite diaphragm preparation process. The preferred oven temperature is set at 40°C to 80°C. The produced diaphragm is placed in a constant temperature oven using a continuous belt conveyor. The residence time of the diaphragm in the oven is adjusted according to the set temperature, generally 5min to 20min. Thoroughly remove moisture and residual solvents, and further use a preferred dust-free cloth and ethanol solution to clean the diaphragm to ensure that the surface is free of impurities and oil stains.

[0080] Step 2: Testing and evaluation.

[0081] Inspect the diaphragm to determine the type, location and severity of the defects. First, use a preferred fixed backlight inspection board or a handheld portable backlight that is larger than the width of the diaphragm. After the treatment in step 1, perform a comprehensive mobile irradiation observation on the bottom of the diaphragm. According to the degree of light transmittance, preliminarily determine the presence of defects or defects on the diaphragm surface, such as bubbles, holes, cracks, etc., and mark them. Further, according to the severity of the diaphragm defects, use a high-resolution microscope to conduct a comprehensive or partial inspection of the diaphragm for subtle and narrow defects that are difficult to determine, and record the specific location, number and size of the holes. Use image analysis software to evaluate the impact of holes on diaphragm performance and determine the next repair plan.

[0082] Step 3: Prepare the repair materials.

[0083] Select a coating material that is the same as or compatible with the diaphragm material and has good adhesion and corrosion resistance. Select a coating material that is the same as or compatible with the diaphragm production formula material and has good adhesion and corrosion resistance, specifically including but not limited to one or more of the following casting liquid formula combinations. The specific polymer is preferably selected from the group consisting of alkali-resistant polysulfone (PSF), polyetheretherketone (PEEK) and polyphenylene sulfide (PPS); the organic solvent is generally selected from the group consisting of preferably polyvinylpyrrolidone (PVP), polyethylene glycol (PEG), N-methylpyrrolidone (NMP), dimethyl sulfoxide (DMSO), N,N-dimethylacetamide (DMAc), N,N-dimethylformamide (DMF); the inorganic filler is selected from the group consisting of preferably zirconium oxide (ZrO2), titanium oxide (TiO2) and cerium oxide (CeO2) with strong hydrophilicity, good corrosion resistance and heat resistance, and at least one particle is selected from the group consisting of magnesium hydroxide (Mg(OH)2), zirconium hydroxide (Zr(OH)4) and titanium hydroxide (Ti(OH)4). Further, at least one of the above-mentioned preferred material combinations is placed in a container step by step according to a certain component ratio through the preparation steps of the casting liquid, heated, fully dissolved and stirred, the rotation speed is selected to be 100-300r / min, the metal bath temperature is set to 50℃-80℃, the dispersion stirring time is more than 12-36h, and then the casting liquid is evacuated with a vacuum pump to remove tiny bubbles inside the casting liquid and retain it for use as a repair material.

[0084] Step 4: Pre-treat the diaphragm defects.

[0085] Use appropriate solvents (such as deionized water, ethanol, propanol, etc.) or mild acid-base solutions to clean the diaphragm material according to the characteristics of organic = organic inorganic = inorganic to remove stubborn stains and chemical residues attached to the surface and improve the adhesion of the coating material. For the marked parts of the diaphragm that are incomplete or defective after detection and evaluation in step 2, fine grinding tools or chemical etching methods can be used to pre-treat the local area to remove the damaged surface material and expose an internal structure that is easier to repair. Use appropriate solvents (such as deionized water, ethanol, propanol, etc.) or mild acid-base solutions to clean the diaphragm material according to the characteristics of organic = organic inorganic = inorganic to remove stubborn stains and chemical residues attached to the surface and improve the adhesion of the coating material. It should be particularly noted that when processing a composite diaphragm with a support mesh structure in the middle, the upper and lower coatings can be processed separately. Be careful not to destroy the structure of the support mesh to avoid damaging the overall strength of the diaphragm.

[0086] Step 5: Apply the repair material.

[0087] The prepared coating material is evenly coated on the surface of the diaphragm, and the coating thickness and uniformity are controlled to ensure that the coating is tightly combined with the surface of the diaphragm. According to the characteristics of the coating material and the shape and size of the defective repair area, suitable spraying, brushing or scraping methods are used to adjust the parameters of the coating equipment, such as spraying pressure, nozzle size, spraying speed, scraper angle and strength, to ensure the precise control of coating thickness and uniformity. Further, the coating material prepared in advance in step three is evenly coated on the defects on the surface of the diaphragm pretreated in step four. Pay attention to controlling the coating thickness and uniformity to avoid the coating being too thick or too thin. Among them, pay attention to controlling the temperature of the coating material at (30℃~60℃) to ensure the viscosity and fluidity of the coating material, and the thickness is controlled at (200μm~550μm), and pay attention to the coating thickness and the accuracy of the original substrate. After the coating is completed, start timing and record the pre-evaporation time. Generally, the time is controlled at (15S~120S). Pre-evaporation is to expose the scraped liquid film to the air for a period of time to evaporate the solvent and cause a certain degree of phase separation.

[0088] Step 6: Curing.

[0089] The coated membrane is treated with immersion precipitation phase inversion gel curing to firmly bond the coating material to the membrane surface. The pre-evaporated liquid membrane is quickly placed in deionized water (non-solvent) at a certain temperature (30℃~80℃). The exchange between the solvent and the non-solvent will immediately occur in the water. As the exchange between the solvent and the non-solvent deepens, the system will separate into phases to form a membrane with a dense surface cortex and a sub-layer finger-like pore structure. Generally, after a few minutes, the liquid membrane can be completely cured. The coating material is firmly bonded to the membrane surface.

[0090] Step 7: Post-processing.

[0091] The repaired diaphragm is cleaned and dried to remove excess coating materials and residues to ensure the smoothness and cleanliness of the diaphragm surface. The high solubility and low ion content of deionized water are used to effectively dissolve and precipitate the residual solvent and tiny impurities in the membrane. The soaking time should be sufficient. It is recommended that the initial soaking should be no less than 30 minutes. The state of the soaking liquid should be observed regularly during this period. Once the soaking liquid becomes turbid, it should be replaced with new high-purity deionized water immediately to ensure the cleaning effect. This step is repeated until the soaking water remains clear and transparent after three consecutive changes without obvious turbidity, so as to ensure that the solvent and impurities are completely removed. The cleaned diaphragm is transferred to a dedicated drying equipment, such as a constant temperature and humidity drying oven or a vacuum dryer. According to the characteristics of the diaphragm material and the repair coating, set the appropriate temperature and time parameters for drying. This process requires strict temperature control (30℃~80℃) to avoid deformation of the diaphragm or damage to the coating due to excessive temperature. At the same time, ensure that there is enough time for the diaphragm to completely dry, eliminate internal moisture, and improve the durability and stability of the diaphragm. To restore and improve the surface finish, cleanliness and overall quality of the diaphragm.

[0092] Step 8: Quality inspection.

[0093] The repaired diaphragm is characterized in terms of morphology, structure and physical properties to ensure that the repair effect meets the requirements for the use of the diaphragm. After drying, the repaired diaphragm is subjected to a comprehensive quality inspection. This includes but is not limited to checking the flatness, smoothness and flawlessness of the diaphragm, as well as evaluating its performance recovery through specific testing methods (such as scanning electron microscopy, pressure testing, porosity testing, permeability testing, etc.). The repair can only be considered successful after ensuring that all indicators meet or reach the use requirements. If one or more indicators are found to be inconsistent with the use requirements, the reasons need to be analyzed in depth and remedial measures should be formulated accordingly. If necessary, the diaphragm that does not meet the requirements in step eight can be returned to step four "pretreatment of diaphragm defects" for re-repair, until step eight ensures that all indicators meet or reach the use requirements before the repair is considered successful. The entire quality inspection process and results are recorded in detail, including test data, evaluation conclusions and any necessary repair operations. These records are of great significance for subsequent quality tracking, performance analysis and possible troubleshooting. When re-repairing, special attention should be paid to possible problems in the previous repair and corresponding improvement measures should be taken to increase the success rate of the repair. Prepare for subsequent application or storage.

[0094] Step 9: Save and process.

[0095] The diaphragms that meet the requirements of use after repair should be effectively preserved in preparation for later electrolytic cell assembly. Use clean and dust-free packaging materials to package the repaired diaphragms. The packaging materials should have good sealing properties to prevent dust and other contaminants from entering the interior of the package. Store the packaged diaphragms in a dry, cool, well-ventilated warehouse or storage area. Avoid damage to the diaphragms from adverse environmental factors such as direct sunlight, high temperature, high humidity and harmful gases. Before assembling the electrolytic cell, remove the diaphragm from the storage area in advance and place it in a suitable environment for pretreatment to ensure that it can quickly reach the optimal performance state when used. When storing, pay attention to clearly mark the diaphragm model, specification, repair date, inspection pass mark and any special precautions on the outside of the package. This will help with quick identification and management during subsequent use.

[0096] Through the embodiments provided in this application, the surface defects or imperfections of the diaphragm are repaired by coating the material, which is easy to operate and low in cost. It can effectively increase the use area of ​​the diaphragm, reduce defects and scrap rates in the diaphragm production process, reduce the risk of hydrogen and oxygen mixing, and thus reduce the possibility of explosion or fire, and enhance system safety. Further optimizing the repair process of the composite diaphragm, improving the operating efficiency and economy of the electrolyzer, will help accelerate the commercialization process of the hydrogen energy industry and contribute to achieving carbon neutrality goals and sustainable development. At the same time, it can also reduce problems such as large-scale waste of production raw materials and environmental pollution. The repair method provided in this embodiment can also be applied to the repair of diaphragms of other similar materials.

[0097] It is understandable that in the specific implementation of this application, related data such as user information is involved. When the above embodiments of this application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0098] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0099] According to another aspect of the embodiment of the present application, a composite membrane repairing device for implementing the composite membrane repairing method is also provided. Figure 2 As shown, the device comprises:

[0100] An acquisition unit 202 is used to acquire a composite membrane to be repaired, wherein the composite membrane to be repaired has surface defects;

[0101] The detection unit 204 is used to detect the composite diaphragm to be repaired and obtain defect information associated with the surface defect, wherein the defect information is used to indicate the extent and location of the surface defect on the composite diaphragm to be repaired;

[0102] A determination unit 206, configured to determine a coating material for repairing the surface defects based on the defect information and the material information of the composite diaphragm to be repaired;

[0103] A coating unit 208 is used to coat the composite diaphragm to be repaired with a coating material to obtain a coated composite diaphragm, wherein the coating material is evenly combined with the surface defects;

[0104] The repair unit 210 is used to perform a curing operation on the coated composite diaphragm to obtain a cured composite diaphragm, and to clean and dry the cured composite diaphragm to obtain a repaired composite diaphragm.

[0105] As an optional solution, the coating unit 208 includes:

[0106] A coating module, used for coating a coating material on the composite diaphragm to be repaired at a preset coating temperature to obtain a composite diaphragm with a preset thickness;

[0107] The pre-evaporation module is used to perform a pre-evaporation operation on a composite membrane of a preset thickness for a preset time to obtain a coated composite membrane.

[0108] As an optional solution, the preset coating temperature is set to 30° C. to 60° C., the preset thickness is set to 200 μm to 550 μm, and the preset time is set to 15 s to 120 s.

[0109] As an optional solution, the determining unit 206 includes:

[0110] A determination module, used to determine at least two casting liquid materials based on defect information and material information;

[0111] A heating module is used to heat at least two casting liquid materials in a container according to a preset ratio, and fully dissolve and stir them to obtain a preliminary fusion material, wherein the heating temperature is set to 50°C to 80°C, the stirring speed is set to 100 to 300 r / min, and the stirring time is set to 12 to 36 hours;

[0112] The evacuation module is used to evacuate the preliminary fusion material to obtain the coating material, wherein the evacuation is used to remove tiny bubbles inside the preliminary fusion material.

[0113] As an optional solution, the repair unit 210 includes:

[0114] The curing module is used to place the coated composite diaphragm into deionized water to obtain a cured composite diaphragm, wherein the temperature of the deionized water is set to 30°C to 80°C, and the solvent and the non-solvent are exchanged in the deionized water to cure the liquid film of the coated composite diaphragm.

[0115] As an optional solution, the repair unit 210 includes:

[0116] The cleaning module is used to place the solidified composite diaphragm in multiple high-purity deionized immersion waters in turn until the current deionized immersion water remains transparent during the immersion time of the solidified composite diaphragm, wherein if the current deionized immersion water becomes turbid during the immersion time, the solidified composite diaphragm is taken out and placed in the next deionized immersion water.

[0117] As an optional solution, the device also includes:

[0118] An acquisition module, used for acquiring the composite diaphragm to be tested before acquiring the composite diaphragm to be repaired;

[0119] A cleaning module is used to perform drying and cleaning treatments on the composite membrane to be inspected before obtaining the composite membrane to be repaired, wherein the drying temperature is set to 40°C to 80°C, the drying time is set to 5min to 20min, and the cleaning agent is set to an ethanol solution;

[0120] The irradiation module is used to perform mobile irradiation observation on the composite diaphragm to be inspected before obtaining the composite diaphragm to be repaired and after drying and cleaning, so as to identify the composite diaphragm to be repaired with surface defects.

[0121] The specific embodiment can refer to the example shown in the above-mentioned composite diaphragm repair method, which will not be described in detail here.

[0122] According to another aspect of the embodiment of the present application, an electronic device for implementing the above-mentioned composite diaphragm repair method is also provided, such as Figure 3 As shown, the electronic device includes a memory 302 and a processor 304. The memory 302 stores a computer program, and the processor 304 is configured to execute the steps in any of the above method embodiments through the computer program.

[0123] Optionally, in this embodiment, the electronic device may be located in at least one network device among a plurality of network devices of a computer network.

[0124] Optionally, in this embodiment, the processor may be configured to perform the following steps through a computer program:

[0125] S1, obtaining a composite diaphragm to be repaired, wherein the composite diaphragm to be repaired has surface defects;

[0126] S2, detecting the composite diaphragm to be repaired to obtain defect information associated with the surface defect, wherein the defect information is used to indicate the extent and location of the surface defect on the composite diaphragm to be repaired;

[0127] S3, determining a coating material for repairing the surface defect based on the defect information and the material information of the composite diaphragm to be repaired;

[0128] S4, coating the composite diaphragm to be repaired with the coating material to obtain a coated composite diaphragm, wherein the coating material is uniformly combined with the surface defect;

[0129] S5, performing a curing operation on the coated composite diaphragm to obtain a cured composite diaphragm, and cleaning and drying the cured composite diaphragm to obtain a repaired composite diaphragm.

[0130] Alternatively, a person skilled in the art may understand that: Figure 3 The structure shown is for illustration only, and the electronic device may also be a terminal device such as a smart phone, a tablet computer, a PDA, a mobile Internet device (MID), or a PAD. Figure 3 The structure of the electronic device is not limited. Figure 3 More or fewer components (such as network interfaces, etc.) as shown in, or with Figure 3 Different configurations are shown.

[0131] Among them, the memory 302 can be used to store software programs and modules, such as the program instructions / modules corresponding to the composite diaphragm repair method and device in the embodiment of the present application. The processor 304 executes various functional applications and data processing by running the software programs and modules stored in the memory 302, that is, realizing the above-mentioned composite diaphragm repair method. The memory 302 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 302 may further include a memory remotely located relative to the processor 304, and these remote memories may be connected to the terminal via a network. Examples of the above-mentioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. Among them, the memory 302 can be specifically, but not limited to, used to store information such as defect information. As an example, such as Figure 3As shown, the memory 302 may include, but is not limited to, the acquisition unit 202, the detection unit 204, the determination unit 206, the coating unit 208, and the repair unit 210 in the composite membrane repair device. In addition, it may also include, but is not limited to, other module units in the composite membrane repair device, which will not be repeated in this example.

[0132] Optionally, the transmission device 306 is used to receive or send data via a network. Specific examples of the network may include a wired network and a wireless network. In one example, the transmission device 306 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices and routers via a network cable so as to communicate with the Internet or a local area network. In one example, the transmission device 306 is a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0133] In addition, the electronic device further includes: a display 308 for displaying the defect information and other information; and a connection bus 310 for connecting various module components in the electronic device.

[0134] In other embodiments, the terminal device or server may be a node in a distributed system, wherein the distributed system may be a blockchain system, and the blockchain system may be a distributed system formed by connecting the multiple nodes through network communication. Among them, the nodes may form a peer-to-peer (P2P) network, and any form of computing device, such as a server, terminal or other electronic device, may become a node in the blockchain system by joining the peer-to-peer network.

[0135] According to one aspect of the present application, a computer program product is provided, the computer program product comprising a computer program / instruction, the computer program / instruction comprising a program code for executing the method shown in the flow chart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication part, and / or installed from a removable medium. When the computer program is executed by a central processing unit, various functions provided by the embodiments of the present application are executed.

[0136] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0137] It should be noted that the computer system of the electronic device is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0138] The computer system includes a central processing unit (CPU), which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) or the program loaded from the storage part to the random access memory (RAM). In the random access memory, various programs and data required for system operation are also stored. The central processing unit, the read-only memory and the random access memory are connected to each other through a bus. The input / output interface (I / O interface) is also connected to the bus.

[0139] The following components are connected to the input / output interface: an input part including a keyboard, a mouse, etc.; an output part including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage part including a hard disk, etc.; and a communication part including a network interface card such as a local area network card, a modem, etc. The communication part performs communication processing via a network such as the Internet. A drive is also connected to the input / output interface as needed. Removable media, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., are installed on the drive as needed so that the computer program read therefrom is installed into the storage part as needed.

[0140] In particular, according to an embodiment of the present application, the process described in each method flow chart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer readable medium, and the computer program contains a program code for executing the method shown in the flow chart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication part, and / or installed from a removable medium. When the computer program is executed by a central processing unit, various functions defined in the system of the present application are executed.

[0141] According to one aspect of the present application, a computer-readable storage medium is provided, and a processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the methods provided in the above-mentioned various optional implementations.

[0142] Optionally, in this embodiment, the computer-readable storage medium may be configured to store a computer program for performing the following steps:

[0143] S1, obtaining a composite diaphragm to be repaired, wherein the composite diaphragm to be repaired has surface defects;

[0144] S2, detecting the composite diaphragm to be repaired to obtain defect information associated with the surface defect, wherein the defect information is used to indicate the extent and location of the surface defect on the composite diaphragm to be repaired;

[0145] S3, determining a coating material for repairing the surface defect based on the defect information and the material information of the composite diaphragm to be repaired;

[0146] S4, coating the composite diaphragm to be repaired with the coating material to obtain a coated composite diaphragm, wherein the coating material is uniformly combined with the surface defect;

[0147] S5, performing a curing operation on the coated composite diaphragm to obtain a cured composite diaphragm, and cleaning and drying the cured composite diaphragm to obtain a repaired composite diaphragm.

[0148] Optionally, in this embodiment, a person of ordinary skill in the art may understand that all or part of the steps in the various methods of the above embodiments may be completed by instructing hardware related to the terminal device through a program, and the program may be stored in a computer-readable storage medium, and the storage medium may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc.

[0149] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0150] If the integrated units in the above embodiments are implemented in the form of software functional units and sold or used as independent products, they can be stored in the above computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling one or more computer devices (which can be personal computers, servers or network devices, etc.) to execute all or part of the steps of the methods of each embodiment of the present application.

[0151] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0152] In the several embodiments provided in the present application, it should be understood that the disclosed client can be implemented in other ways. Among them, the device embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0153] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0154] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0155] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for repairing a composite diaphragm, characterized in that: include: Obtaining a composite diaphragm to be repaired, wherein the composite diaphragm to be repaired has surface defects; Detecting the composite diaphragm to be repaired to obtain defect information associated with the surface defect, wherein the defect information is used to indicate the extent and location of the surface defect on the composite diaphragm to be repaired; Determining a coating material for repairing the surface defect based on the defect information and the material information of the composite diaphragm to be repaired; Using the coating material to coat the composite diaphragm to be repaired to obtain a coated composite diaphragm, wherein the coating material is uniformly combined with the surface defect; The coated composite diaphragm is subjected to a curing operation to obtain a cured composite diaphragm, and the cured composite diaphragm is cleaned and dried to obtain a repaired composite diaphragm.

2. The method according to claim 1, characterized in that The method of coating the composite diaphragm to be repaired with the coating material to obtain the coated composite diaphragm comprises: At a preset coating temperature, coating the coating material on the composite diaphragm to be repaired to obtain a composite diaphragm with a preset thickness; The composite diaphragm of the preset thickness is subjected to a pre-evaporation operation for a preset time to obtain the coated composite diaphragm.

3. The method according to claim 2, characterized in that The preset coating temperature is set to 30° C. to 60° C., the preset thickness is set to 200 μm to 550 μm, and the preset time is set to 15 s to 120 s.

4. The method according to any one of claims 1 to 3, characterized in that: The step of determining a coating material for repairing the surface defect based on the defect information and the material information of the composite diaphragm to be repaired comprises: Determining at least two casting liquid materials based on the defect information and the material information; According to a preset ratio, the at least two casting liquid materials are placed in a container for heating, and are fully dissolved and stirred to obtain a preliminary fusion material, wherein the heating temperature is set to 50° C. to 80° C., the stirring speed is set to 100 to 300 r / min, and the stirring time is set to 12 to 36 h; The preliminary fused material is subjected to an evacuation process to obtain the coating material, wherein the evacuation process is used to remove tiny bubbles inside the preliminary fused material.

5. The method according to any one of claims 1 to 3, characterized in that: The curing operation of the coated composite diaphragm to obtain a cured composite diaphragm comprises: The coated composite membrane is placed in deionized water to obtain the solidified composite membrane, wherein the temperature of the deionized water is set to 30° C. to 80° C., and the solvent and the non-solvent are exchanged in the deionized water to solidify the liquid film of the coated composite membrane.

6. The method according to any one of claims 1 to 3, characterized in that: The cleaning and drying of the cured composite diaphragm comprises: The solidified composite membrane is successively placed in multiple high-purity deionized immersion waters until the current deionized immersion water remains transparent during the immersion time of the solidified composite membrane, wherein, if the current deionized immersion water becomes turbid during the immersion time, the solidified composite membrane is taken out and placed in the next deionized immersion water.

7. The method according to any one of claims 1 to 3, characterized in that: Before obtaining the composite diaphragm to be repaired, the method further comprises: obtaining a composite diaphragm to be tested; The composite diaphragm to be inspected is subjected to a drying treatment and a cleaning treatment in succession, wherein the drying temperature is set at 40°C to 80°C, the drying time is set at 5min to 20min, and the cleaning agent is set to an ethanol solution; after the drying treatment and the cleaning treatment, the composite diaphragm to be inspected is subjected to mobile irradiation observation to determine the composite diaphragm to be repaired that has the surface defects.

8. A composite diaphragm repair device, characterized in that: include: An acquisition unit is used to acquire a composite diaphragm to be repaired, wherein the composite diaphragm to be repaired has surface defects; A detection unit, used to detect the composite diaphragm to be repaired, and obtain defect information associated with the surface defect, wherein the defect information is used to indicate the extent and location of the surface defect on the composite diaphragm to be repaired; A determination unit, used to determine a coating material for repairing surface defects based on defect information and material information of the composite diaphragm to be repaired; A coating unit, used for coating the composite diaphragm to be repaired with a coating material to obtain a coated composite diaphragm, wherein the coating material is uniformly combined with the surface defects; The repair unit is used for performing a curing operation on the coated composite diaphragm to obtain a cured composite diaphragm, and for cleaning and drying the cured composite diaphragm to obtain a repaired composite diaphragm.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein the program executes the method according to any one of claims 1 to 7 when executed.

10. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to execute the method according to any one of claims 1 to 7 through the computer program.

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