162 results about "Membrane technology" patented technology

This invention relates to the field of waterproof membrane technology, specifically to a TPO thermoplastic polyolefin polymer composite material. This material is composed of multiple components, including an interface-controlled masterbatch. Its core lies in the process of sequentially hydroxylating, treating with vinyltrimethoxysilane, hydrolyzing and condensing tetraethyl orthosilicate, and treating with octadecyltrimethoxysilane to obtain a surface-functionalized filler, which is then combined with maleic anhydride-grafted polypropylene to form the interface-controlled masterbatch. This design significantly improves the interfacial bonding between the filler and the polymer matrix, enabling the material to maintain excellent mechanical properties, dimensional stability, and low-temperature flexibility even after artificial climate aging, and effectively ensuring the long-term durability and reliability of welded joint areas.

The application discloses a preparation method of a PPSU-based ZIF-8 double-layer membrane and application of the double-layer membrane in hydrogen separation, and belongs to the technical field of gas separation membranes. The preparation method is as follows: ZIF-8 seeds are embedded in a PPSU matrix solution, then are spin-coated onto the surface of an alpha-Al2O3 carrier to obtain a PPSU-based membrane, and secondary growth of the membrane is carried out through a solvothermal reaction, so that the seeds grow epitaxially, a continuous, dense and defect-free ZIF-8 separation layer is formed on the surface and the near-surface region of the carrier substrate, and the reaction is ended to obtain the double-layer membrane. Through the seed embedding strategy, the interface bonding force between the ZIF-8 layer and the PPSU substrate is significantly enhanced, and the generation of interface defects is effectively inhibited. The double-layer membrane has high permeation flux and high separation selectivity for a H2 / CO2 system, and is particularly suitable for hydrogen separation and purification processes.

This invention discloses a high-liquid-storage-performance coated separator, its preparation method, and its application, belonging to the field of battery separator technology. The coated separator includes a base membrane and a coating disposed on at least one surface of the base membrane; the coating contains a first polymer and a second polymer; wherein the first polymer consists of secondary particles formed by the agglomeration of primary particles, with an average particle size of 10 μm to 30 μm and a specific surface area of ​​8 m². 2 / g~25m 2 The polymer has an elastic modulus of 9MPa~20MPa; the average particle size of the second polymer is 0.4μm~1μm, and the glass transition temperature of the second polymer is ≤80℃. The above-mentioned coated separator can improve the adhesion, liquid retention rate, and stress buffering capacity of the separator in the C-corner region of a square wound cell, thereby increasing the cell production yield, reducing the risk of lithium plating, and extending the cell cycle life.

The application provides a device for preparing a composite nanofiber porous membrane, and relates to the technical field of nanofiber membranes. The device for preparing a composite nanofiber porous membrane comprises a stirring mechanism, a membrane preparation mechanism, a filtering mechanism and a plurality of quantitative mechanisms, and each mechanism cooperates to complete an integrated operation of material conveying, mixing, membrane preparation and waste gas treatment. The stirring mechanism is a sealed cavity structure, an internal stirring module for stirring and mixing materials is arranged in the stirring mechanism, one side of the stirring mechanism is fixedly connected with the membrane preparation mechanism through a conveying pipeline, the uniformly stirred materials can be stably pumped into the membrane preparation mechanism, and a waste gas pipe is communicated with the stirring mechanism through an air pump close to the upper end position in the stirring mechanism. The device has the advantages of precise quantitative conveying of raw materials, efficient mixing of materials, recycling of waste gas after purification, high automation degree of membrane preparation and discharging, integrated and cooperative operation of each module, and improved production efficiency and product qualification rate.

The embodiment of the present application provides a magnetron magnet system, a magnetron sputtering device and a preparation method of the magnetron magnet system, relates to the film coating technical field, and the magnetron magnet system comprises a shell and a magnet arranged in a chamber, a vacuum is formed in the chamber, and the magnet is exposed to the vacuum. Compared with the prior art, the present application provides a whole sealing environment through the shell, can realize effective isolation of the magnet assembly and cooling water, and can realize the purpose of prolonging the service life, providing a stable magnetic field and avoiding unstable products by exhausting the blocking gas through the air exchange channel to form a vacuum in the chamber.

This invention relates to the field of glass interlayer film technology, specifically to an interlayer film for glass that combines heat insulation and sound insulation properties, its preparation method, and its application. The preparation steps include: S1. Preparation of an anti-shrinkage modifier; S2. Mixing PVB resin powder, plasticizer, anti-shrinkage modifier, modified sound and heat insulation microspheres, auxiliary modifier, and UV absorber UV-326 at room temperature until homogeneous to obtain a composite mixture; S3. Feeding the composite mixture into a co-rotating twin-screw extruder for melt extrusion, flowing out through a T-die, calendering and cooling with a three-roll calender, and then cutting and winding it online to obtain the interlayer film. The synergistic effect of the modified sound and heat insulation microspheres, anti-shrinkage modifier, and auxiliary modifier in this invention, achieving deep synergy in structure, function, and interface, solves the industry technical bottleneck of traditional PVB interlayer films where sound and heat insulation are difficult to achieve simultaneously, and performance and durability are mutually restrictive. This provides an innovative glass interlayer film that combines high performance, high durability, and high processability.

This invention relates to the field of nanofiltration membrane technology, and more particularly to a crown ether-modified positively charged polyamide / carbon nanotube nanofiltration membrane, its preparation method, and its applications. The nanofiltration membrane is constructed by attaching a carbon nanotube interlayer to a substrate membrane, followed by the preparation of a crown ether-modified polyamide membrane layer on the carbon nanotube layer via interfacial polymerization. Further, positively charged molecules are grafted onto the membrane surface, resulting in a composite functional structure where the surface exhibits the positive charge of the grafted molecules, the internal lithium-ion recognition properties of the crown ether, and the conductivity of the carbon nanotubes at the bottom. The positively charged layer of this nanofiltration membrane possesses a strong size sieving effect and Donan repulsion effect for positively charged divalent magnesium ions, while the crown ether provides a dedicated channel for lithium ions, enabling rapid lithium-ion transport under electro-driven conditions. This endows the nanofiltration membrane with the characteristic of simultaneously "intercepting magnesium ions and allowing lithium ions to pass through," thereby achieving highly efficient lithium-magnesium separation applications.

This invention relates to the field of ion-conducting membrane technology, and particularly to a wedge-shaped amphiphilic molecule, a biomimetic ion-conducting membrane, and its preparation method. The biomimetic ion-conducting membrane utilizes the self-assembly behavior of the wedge-shaped amphiphilic molecule to form a columnar mesocrystalline phase containing transport channels. This columnar structure is fixed within a membrane framework composed of methacrylate polymers using ultraviolet graft copolymerization to form an ion-transfer membrane. This membrane exhibits strong ion selectivity and conductivity, and its mechanism of action is similar to that of biological cell membranes. It can be used for the transport and separation of microparticle materials such as ions, small molecules, and micro-electronic conductors, showing broad application prospects in fields such as biology, medicine, and environmental analysis. Furthermore, its ion conductivity and chemical stability also demonstrate its potential application in proton exchange membrane fuel cells.

This invention discloses a separator, its preparation method, and its application, belonging to the field of battery separator technology. Addressing the technical problems in existing battery separators where thinner membranes cannot simultaneously achieve optimal air permeability, mechanical properties, thermal shrinkage rate, and flatness, the separator provided by this invention comprises a single molecular weight polyolefin with a molecular weight of 1 million to 5 million; when the separator thickness is 2μm to 5.5μm, the thickness difference is ≤1μm; and / or, air permeability of 50sec / 100cc to 140sec / 100cc; and / or, under high-temperature treatment at 105℃, a MD thermal shrinkage rate not exceeding 3% and a TD thermal shrinkage rate not exceeding 2%; and / or, 0.1Ω·cm 2 ~1.5Ω·cm 2 The internal resistance of the separator is low. The separator of this application has low thickness, low thermal shrinkage rate, high flatness and good ion conductivity. When used in the preparation of batteries, it can improve the energy density, cycle life and safety of lithium batteries.

The utility model relates to the technical field of membrane showering, specifically a membrane showering cutting mechanism, including base, the top fixed mounting of base has the support frame, the top mounting of support frame has the anti -static component that reduces static when cutting, the anti -static component includes the brush holder groove that sets up in the top of support frame, the inside detachable mounting of brush holder groove has the brush holder, the side fixed mounting of brush holder has static brush, the side fixed mounting of brush holder has the wire, the utility model discloses through anti -static component can remove static, prevent static influence that cuts, through membrane showering subassembly can replace membrane showering post fast, and will spread open the membrane showering of membrane showering post surface, through moving subassembly can move drive plate to cut thereby.

This invention discloses a gas separation membrane and its preparation method, belonging to the field of gas separation membrane technology. The gas separation membrane includes a separation layer comprising a network and PTI nanosheets dispersed within the network. The network includes at least one of a biopolymer network and a chemical polymer network. Optionally, it further includes a support layer disposed below and bonded to the separation layer. The preparation method of the gas separation membrane includes either step A or step B: Step A: Forming a membrane on the surface of a polymer hydrogel using PTI nanosheets and the network as raw materials, thereby obtaining the gas separation membrane; Step B: Forming a membrane on the surface of the support layer using PTI nanosheets and the network as raw materials, thereby obtaining the gas separation membrane. The gas separation membrane of this invention is an N2 preferential permeation membrane, possessing both a high N2 permeation rate and a high N2 / CO2 selectivity.

This utility model belongs to the field of release film technology, and particularly relates to a vertically textured breathable release film, comprising: a vertically textured film layer, the upper surface of which is provided with a plurality of grooves extending along the length direction of the release film, the plurality of grooves being arranged parallel to each other, and the bottom of each groove having a plurality of breathable holes penetrating the vertically textured film layer in a vertical direction, the plurality of breathable holes being arranged along the length direction of the groove; a breathable fiber layer, disposed on the bottom surface of the vertically textured film layer, the breathable fiber layer having a porous structure, the top end of the breathable holes being directly connected to the outside, and the bottom end of the breathable holes being connected to the outside through the porous structure; and a substrate layer, disposed on the bottom surface of the breathable fiber layer. This utility model can further improve the air venting smoothness of the release film, allowing air bubbles between the product and the release film to be quickly expelled even when the product adhesion is high.

The application relates to the field of film technology and discloses a film for furniture packaging and a production process, which comprises a film body, the film body comprises an LLDPE base, an mLLDPE base, a VLDPE base, carbon nanotubes, core-shell structure nanoparticles, a compatilizer, PCM capsules and silicone; the cross section of the film body is sequentially divided into an inner layer area, a middle area and an outer layer area; the outer layer area is provided with the LLDPE base, the VLDPE base and the carbon nanotubes; the middle area is provided with the LLDPE base, the mLLDPE base, the core-shell structure nanoparticles and the compatilizer; the inner layer area is provided with the LLDPE base, the PCM capsules and the silicone; and the silicone is located on the outer surface of the inner layer area. The above raw materials are mixed and extruded into a tubular film bubble through a co-extrusion machine, and the film body is formed through a film blowing process of stretching and cooling. The film body has high tensile strength, puncture resistance and tear resistance, can reliably resist the puncture of furniture corners and the collision in transportation.

This invention provides an Ag-doped photocatalytic composite membrane, its preparation method, and its application, relating to the field of water treatment membrane technology. The Ag-doped photocatalytic composite membrane of this invention has a composite functional structure consisting of a polyester nonwoven fabric support layer, a PVDF base membrane core layer, an Ag-BaTiO3 / ZnIn2S4 piezoelectric-photocatalytic functional layer, and a polydopamine hydrophilic protective layer, arranged sequentially. By constructing an Ag-doped dual piezoelectric coupled heterojunction system, introducing the surface plasmon resonance effect of Ag ions, and combining plasma-assisted deposition technology with the composite functional structure, this invention achieves a wide spectral response (UV to near-infrared), highly efficient piezoelectric-photocatalytic synergistic degradation, robust catalyst adhesion to prevent detachment, and multiple effects of "separation-degradation-self-cleaning." This solves the problems of traditional piezoelectric-photocatalytic membranes in terms of catalytic efficiency, long-term stability, and industrial adaptability, and has good application prospects.

This invention relates to the field of photovoltaic encapsulant film technology, and discloses a thermally conductive and insulating photovoltaic encapsulant film, its preparation method, and its application. The film is an integrated structure formed by double-layer co-extrusion, comprising upper and lower functional layers (each including 100 parts of matrix resin, 5-25 parts of BN@SiO2 core-shell composite filler, and 1.5-8 parts of functional microcapsules); the BN@SiO2 core-shell composite filler includes a BN@SiO2 core-shell structure with h-BN as the core and amorphous SiO2 as the shell, and a gradient interface layer grafted onto its outer surface (which, from the inside out, includes an anchoring layer covalently bonded to the SiO2 shell, a flexible stress-buffering crosslinking layer, and a hydrophobic outer layer); the fillers in the upper and lower functional layers have different orientations. The thermal conductivity of this film exceeds 1.0 W / (m·K), reducing the operating temperature of photovoltaic modules by nearly 20°C, and the volume resistivity after deflection exceeds 10¹. 5 It has a strength of Ω·cm and also possesses excellent resistance to PID, high-voltage insulation, and interfacial adhesion.

The application relates to a preparation method of a ternary alloy nanoflower and an organic hybrid composite film thereof, and belongs to the technical field of nanometer materials and functional films. BiCl3, SbCl3 and TeO2 are dissolved in ethylene glycol, NaOH and PVP K30 are added, stirring is carried out at room temperature until a clear solution is obtained, the solution is transferred to a reaction kettle, and reaction is carried out in a blast drying oven; after cooling, centrifugal washing is carried out; after drying, a Bi-Sb-Te alloy nanoflower is obtained; the Bi-Sb-Te alloy nanoflower is mixed with a PEDOT:PSS aqueous solution; a conductive enhancer is added, ultrasonic dispersion is carried out to form a uniform slurry; the slurry is deposited on the surface of a glass substrate by using a drying machine through a flow casting method; after annealing, the film is peeled off, vacuum drying is carried out, and a flexible thermoelectric composite film is formed. Through the establishment of a trinity technology of "nanoflower morphology design-in-situ interface optimization-low temperature solution process", the problems of poor flexibility of traditional thermoelectric materials, nanocomposite interface failure and unsustainable high-temperature process are solved.

The present application belongs to the technical field of water treatment, and relates to inorganic nanofiltration membrane technology, in particular to a new type of inorganic nanofiltration membrane and a preparation method, a use method and a filtration system thereof.The new type of inorganic nanofiltration membrane is a combination, which utilizes a tubular ceramic ultrafiltration membrane with a honeycomb porous structure, uses the tubular ceramic ultrafiltration membrane as a pretreatment core unit and a support framework of the nanofiltration membrane, and stacks graphene powder in the tubular ceramic ultrafiltration membrane to form an inorganic filtration layer with a smaller pore size, so as to form a new type of inorganic nanofiltration membrane, which is low in cost, free of blockage, easy to maintain, long in service life, and effective in solving the limitations of organic nanofiltration membranes in application scenarios of oxidizing, solvent and pollution solutions, and expanding the application scenarios of the nanofiltration membrane.In use, the graphene filtration layer can be replaced at any time through a graphene injection port and an exhaust port.The filtration structure of the filtration system adopts the new type of inorganic nanofiltration membrane.

The application provides a sewage treatment method based on A2O-MBR membrane technology, and belongs to the technical field of sewage treatment. The technical scheme is as follows: step one, pretreating sewage; step two, feeding the pretreated sewage into an improved A2O biological treatment section; step three, carrying out sludge refluxing between the anaerobic section, the anoxic section and the aerobic section; step four, carrying out MBR membrane separation on the sewage treated by the improved A2O biological treatment; step five, carrying out advanced treatment on the effluent after the MBR membrane separation; and step six, intelligently controlling and energy-saving adjusting the system operation process and monitoring system operation parameters in real time. The application has the beneficial effects that: the application combines biological denitrification and dephosphorization, membrane separation and intelligent control, improves the sewage treatment efficiency and the effluent stability, reduces membrane pollution and operation energy consumption, and takes into account sludge reduction and water reuse.

The application discloses an intelligent predictive maintenance system for an external pressure type ultrafiltration membrane based on a pollution state sensing, relates to the technical field of ultrafiltration membrane maintenance, and is characterized in that the system is a closed-loop intelligent maintenance system, which is constructed through a collaborative architecture of a sensing layer and an execution layer, data sharing and dynamic optimization decision-making, forms a closed-loop maintenance process of'sensing-analysis-early warning-decision execution', breaks the problem of fragmentation of each link of a traditional system, improves the intelligent level and operation efficiency of the maintenance system, promotes the transformation of ultrafiltration membrane maintenance from 'after-the-fact remediation' to 'prior prediction', and provides a core technical guarantee for the large-scale and efficient application of the ultrafiltration membrane technology.

The utility model discloses a kind of film feeding devices for film sealing machine, belong to film sealing technical field, including support frame, support frame is fixed with bottom plate and film outlet platform, bottom plate is equipped with membrane groove;Support frame is equipped with film roller for conveying diaphragm and press membrane mechanism;It further includes film taking frame and film taking roller, film taking roller is rotatably connected in one end of film taking frame, the other end of film taking frame is rotatably connected on support frame, and film taking roller is used to take diaphragm from membrane groove;First central gear is rotatably connected on support frame, first central gear is engaged with first planetary gear, first central gear is connected with first swing frame between first planetary gear, first central gear is also transmission connection with film roller, and first planetary gear is used to drive film taking roller to rotate.The utility model can take and transport piece-shaped membrane material stacked together in turn, avoid the fracture problem possibly occurred in membrane material conveying process.

This invention relates to the field of waterproof membrane technology, and proposes a four-layer modified bitumen pre-laid waterproof membrane and its preparation method. The four-layer modified bitumen pre-laid waterproof membrane, from bottom to top, comprises a release film layer, a first modified bitumen adhesive layer, a first base layer, a second modified bitumen adhesive layer, a second base layer, a third modified bitumen adhesive layer, a third base layer, a fourth modified bitumen adhesive layer, a fourth base layer, a fifth modified bitumen adhesive layer, a mineral particle protective layer, and an overlap edge silicone oil film. The modified bitumen adhesive layer comprises the following raw materials in parts by weight: 100 parts bitumen, 10-15 parts SBS, 5-8 parts SBR, 8-12 parts softener, 12-20 parts isophorone diisocyanate modified filler, and 4-12 parts polyamide polyepoxychloropropene resin. This technical solution solves the problem of insufficient peel strength in related technologies for four-layer modified bitumen pre-laid waterproof membranes.

This invention belongs to the field of proton exchange membrane technology, specifically relating to a method for preparing a multilayer gradient-enhanced proton exchange membrane and its product. The method includes cleaning and pretreatment of the base membrane; preparing a nitrogen / tungsten-based platinum black catalyst and formulating a PFSA resin slurry containing the catalyst; slit-coating the catalyst onto both sides of an e-PTFE membrane to form a proton-conducting layer; subjecting a PEEK membrane to ultraviolet irradiation and TiO2 sol coating to form a mechanically reinforcing layer; assembling the functional layers into a "sandwich" structure using PFSA resin bonding; subjecting the structure to low-temperature stepped drying and high-temperature annealing, followed by offline activation to obtain the multilayer gradient-enhanced proton exchange membrane.

This invention relates to the field of separation membrane technology, and particularly to a photothermal nanofiber membrane capable of retaining volatile organic compounds (VOCs), its preparation method, and its applications. This photothermal nanofiber membrane employs a multi-structure synergistic design to comprehensively optimize the overall performance of membrane distillation. In the gradient wettability structure of the photothermal nanofiber membrane, the hydrophobic layer, with its low thermal conductivity, suppresses heat conduction loss and alleviates temperature polarization; the hydrophilic layer, through its hydration effect, suppresses solute enrichment and alleviates concentration polarization; the nano-thin-coated PDA photothermal layer achieves efficient photothermal conversion through the light trapping effect, while simultaneously providing sufficient anchoring points for the loaded defective UiO-66 nanoparticles; the synergistic effect of each functional layer achieves multifunctional integration of thermal management, anti-fouling, photothermal conversion, and VOCs retention, comprehensively improving the operating efficiency and stability of the membrane distillation system. The preparation method provided by this invention offers strong process controllability and possesses good reproducibility and potential for large-scale application.

This invention relates to the field of loudspeaker diaphragm technology, specifically to an acoustic rubber diaphragm and its preparation process: by selecting AEM rubber or a blend of various rubbers as the rubber matrix, the inherent high damping characteristics of the rubber material are utilized to effectively suppress split vibrations and reduce acoustic distortion. Simultaneously, its good compliance enhances the mid-to-low frequency response, thereby meeting the requirements for high-fidelity sound quality. By adding 40-60% of the rubber matrix and 30-50% of filler for synergistic reinforcement, combined with a three-dimensional network structure formed by crosslinking agents and vulcanizing agents, the fatigue resistance and structural stability of the diaphragm are significantly improved. The rubber matrix itself possesses excellent hydrophobicity and wide-temperature stability. Therefore, this technical solution simultaneously achieves high damping, low distortion, waterproofing, fatigue resistance, and wide-temperature stability within the same material system.

This invention relates to the field of PVC film technology, and particularly to an antistatic transparent enclosure film and its preparation method. The antistatic transparent enclosure film includes a PVC layer, the top surface of which is provided with a conductive mesh, which is printed with antistatic paint. By weight, the raw materials for preparing the PVC layer include the following components: 100 parts PVC resin, 22-26 parts DOTP, 1.5-2 parts organotin stabilizer, 1-3.5 parts antistatic agent, 3-5 parts styrene-maleic anhydride copolymer, 0.5-1 part lubricant, 0.2-0.5 parts antioxidant, 8-10 parts flame retardant, and 0.5-1.5 parts coupling agent. The antistatic transparent enclosure film of this invention has a low surface resistance, allowing static electricity to be conducted away through the conductive mesh, effectively reducing the adhesion of dust in the air due to static electricity and avoiding safety hazards caused by static accumulation.

This utility model discloses a high-strength silicon carbide ceramic membrane with an internal support structure, specifically relating to the field of ceramic membrane technology. It includes a skeleton mechanism, a fixing mechanism, and several main body mechanisms. The main body mechanisms are detachably installed inside the skeleton mechanism via the fixing mechanism. The skeleton mechanism includes prisms and several support plates, with the support plates evenly distributed on the outer wall of the prisms. A sealing edge is fixedly installed on the end of each support plate away from the prism. The prisms, two sets of adjacent support plates, and the outer walls of the two sets of adjacent support plates form a mounting groove, and the main body mechanisms are slidably installed inside the mounting groove. This utility model uses the fixing mechanism to fix several main body mechanisms inside the skeleton mechanism, forming a complete filter element. The skeleton mechanism serves as the internal support structure of the device, ensuring the overall structural strength of the device. Simultaneously, the skeleton mechanism also functions as a mounting frame, allowing for quick replacement of any damaged main body mechanisms.

This invention discloses a method for solid-liquid separation and resource recovery of mineral slurry, comprising the following steps: S1, chemical sedimentation pretreatment of mineral slurry: adding a sedimentation filter aid containing a main coagulant and an auxiliary flocculant to the mineral slurry, stirring and reacting, and then allowing it to settle to separate the upper clarified water and the bottom high-concentration concentrated mineral slurry; S2, deep solid-liquid separation using membrane technology: sending the concentrated mineral slurry into a dynamic rotating membrane separator for solid-liquid separation to obtain membrane permeate and solid filter media; S3, water resource recovery: classifying and reusing the upper clarified water and membrane permeate for mineral processing; S4, solid resource recovery: utilizing the solid filter media according to its composition, including as raw material for building materials, regrinding and reprocessing, or hydrometallurgy. This invention achieves efficient solid-liquid separation and synergistic recovery of water and solid resources through a combination of chemical sedimentation and dynamic membrane separation, offering advantages such as good separation effect, high water resource utilization rate, high solid resource recovery value, and low operating cost.

This utility model discloses a gradient waterproofing membrane, relating to the field of waterproofing membrane technology. Its specific structure includes: a waterproofing membrane body; a first support plate fixed to the upper side of the waterproofing membrane body, with gradient water-guiding grooves spaced apart on the first support plate; a first waterproof layer installed below the first support plate; a second support plate fixed to the lower side of the waterproofing membrane body, with its two ends engaging with the two ends of the first support plate to form grooves located on the outer side of the waterproofing membrane body; the two ends of the second support plate being stepped; a second waterproof layer installed above the second support plate; and a clamping assembly installed on the first support plate, extending through the first support plate into the grooves. This utility model solves the technical problem of insufficient stability after assembly of existing waterproofing membranes.

The present application relates to the technical field of COF film, and discloses a kind of fast large size COF film and its preparation method and application.By dissolving monomer in trifluoroacetic acid system, precursor solution is first spread on the surface of substrate to form a continuous liquid film, then solvent removal, monomer concentration and rapid condensation are promoted by vacuum condition, integration of film forming process and skeleton generation process is realized.Vacuum environment can speed up solvent removal and reactant enrichment, so that the film layer can quickly cross the formation stage from dispersed state to continuous film state, thereby improving the film forming efficiency.The reaction is carried out in spreading state, so it is more conducive to obtain large size film layer.The COF film is applied to alkaline fuel cell, and its excellent hydroxyl ion conduction capacity significantly improves the output power density and energy conversion efficiency of the battery.Meanwhile, combined with the effective screening effect of ultra-micropore diameter on carbonate / bicarbonate, the high discharge performance of the battery in long-term operation is further ensured, and finally the overall performance is comprehensively improved.