52results about How to "Improve interface performance" patented technology

This invention relates to an insulating oil and an oil-paper insulation system containing superhydrophobic nanoparticles, as well as their preparation method and application, belonging to the field of electrical equipment insulation technology. This invention provides an insulating oil containing superhydrophobic nanoparticles, wherein the superhydrophobic nanoparticles are silane-modified nanoparticles, and the nanoparticles include at least one of SiO2, TiO2, and h-BN; the insulating oil includes at least one of mineral insulating oil, synthetic insulating oil, and natural ester insulating oil. This invention achieves the superhydrophobicity of the nanoparticles and good compatibility with the oil phase through silane modification. Adding silane-modified nanoparticles to the insulating oil effectively reduces the water content of the insulating oil and optimizes the interfacial performance of the oil-paper. Combined with the low-temperature, high-efficiency, and uniform rapid impregnation process of this invention, the overall electrical performance and service life of the oil-paper insulation system are significantly improved.

The invention discloses a polypropylene film suitable for a film lamination method and a preparation method of the polypropylene film. The polypropylene film comprises the following components in parts by weight: 85.6-91.85 parts of polypropylene; 4-7 parts of long-chain branched polypropylene; 4-7 parts of a compatibilizer; 0.05 to 0.1 part of a nucleating agent; and 0.1 to 0.3 part of an antioxidant. Firstly, polypropylene is selected, so that the wettability of a melt to carbon fibers is effectively improved, and the filling defect caused by high viscosity of a traditional material is overcome; and secondly, the compatibilizer is introduced to form firm chemical bonding with the fiber surface, so that the interface bonding strength is greatly enhanced. And finally, by combining a precise extrusion and casting process, the prepared polypropylene film is uniform in thickness, excellent in interface performance and suitable for a film lamination method.

This invention relates to the field of metal material processing technology. It discloses a synergistic composite forming process for metal wire electroforming and drawing, comprising the following steps: first, surface cleaning and activation treatment of the base metal wire to remove oxide layers, oil stains, and impurities; then, feeding the pretreated wire into an electroforming device to deposit a metal plating layer, obtaining an initial electroformed composite wire; subsequently, direct online radial high-pressure drawing to achieve a dense bond between the electroformed layer and the base metal; followed by annealing of the composite wire; repeating the electroforming, drawing, and annealing steps at least once to complete multiple synergistic cycles; finally, testing the dimensional accuracy, mechanical properties, and interlayer bonding force of the composite wire, and cutting it into finished products after passing the tests. This invention employs an online tandem synergistic process of electroforming and drawing, avoiding plating oxidation and interface contamination. Radial high-pressure drawing can compact the plating layer, eliminate porosity, and improve bonding density.

The application relates to the technical field of building material corrosion and rust prevention, in particular to an inorganic polymer reinforced concrete anticorrosive coating and a preparation method thereof. According to mass fractions, the inorganic polymer reinforced concrete anticorrosive coating comprises 60-70 parts of a base, 8-12 parts of an anti-cracking system, 10-15 parts of modified fillers, 5-8 parts of an additive and 15-20 parts of a solvent; the base is selected from alkali-activated metakaolin; and the preparation method of the modified fillers comprises the following steps: calcining composite fillers at 480-500 DEG C for 1.5-2 h, immersing the composite fillers in a 10wt% tannic acid solution for 10-12 h after cooling, immersing the composite fillers in a modified liquid after filtration, ultrasonic dispersing the composite fillers for 20-30 min, vacuum drying the composite fillers, crushing and sieving the composite fillers to obtain the modified fillers. The application provides an inorganic polymer reinforced concrete anticorrosive coating and a preparation method thereof, so as to solve the problems of large self-shrinkage, easy cracking and single function in the related art, and the coating can adapt to complex environments.

This invention provides an epoxy resin-based composite waterproofing material, its preparation method, and its application. After curing, the epoxy resin-based composite waterproofing material exhibits high flexural strength and Shore hardness, as well as excellent oil penetration resistance. It is suitable for coating the tank walls, bottom plates, and floating roof surfaces of oil storage tanks, curing to form a waterproofing layer. This enhances the oil storage tank's resistance to oil leakage, thereby extending its service life and preventing economic losses and environmental hazards caused by oil leakage.

The application discloses an insect exoskeleton morphological layup composite panel, a sandwich structure and a preparation method. The sandwich structure comprises two pieces of bionic layup composite panels and a piece of aramid honeycomb core layer. The bionic layup composite panel draws lessons from the spiral stacking microstructure of the insect exoskeleton, the layup design considers the symmetry and balance requirements of the composite material, a fixed rotation angle is introduced between adjacent fiber layers, and the rotation angle is taken as a period of 180 degrees, and after a plurality of periods are laid and heat-pressed and cured, the bionic layup composite panel is obtained. The bionic layup design effectively reduces the interlaminar shear stress of the composite material, weakens the inherent anisotropy of the composite material, and improves the transverse bearing capacity and impact resistance. The bionic layup composite panel and the aramid honeycomb core layer have the advantages of high specific strength, high specific stiffness, impact energy absorption, vibration and noise reduction, electromagnetic shielding and the like, and a structure and function integrated material with more excellent comprehensive performance is obtained, and the structure and function integrated material is expected to be widely used in main load-bearing structures of various spacecrafts.

The invention relates to the technical field of building waterproof composite materials, in particular to an organic silicon modified resin building waterproof composite material and a preparation method thereof. Comprising a waterproof roll and a waterproof coating arranged on the surface of the waterproof roll, the waterproof coating is prepared from the following components in parts by weight: 20 to 32 parts of silane modified polyether, 15 to 30 parts of organic silicon modified resin, 5 to 10 parts of polysaccharide-based composite polylactic acid, 8 to 12 parts of plasticizer, 1 to 3 parts of curing agent, 0.5 to 2 parts of titanium dioxide and 0.5 to 3 parts of water removal agent. An organic silicon structure in the prepared waterproof composite material has the characteristic of low surface energy, so that the surface of a coating presents strong hydrophobicity, and liquid water permeation is effectively blocked; the waterproof coating can be matched with a compact cross-linked network structure to form a continuous and seamless waterproof film, realizes high hydrostatic pressure resistance and low water absorption, and is suitable for key waterproof parts such as roofs, basements and toilets.

The application provides a kind of underwater concrete rapid repair material, by weight fraction, including the following components: cementing material system 67-80 parts, dual functional graphene system 0.6-1.2 parts, intelligent curing adjustment system 3-5 parts, auxiliary additive 2-3 parts, filler system 20-25 parts and water 18-25 parts;The dual functional graphene system includes hydrophilic amino graphene and hydrophobic sulfhydryl reduced graphene oxide, and the mass ratio of the two is (1.2-1.8):(0.8-1.2);The intelligent curing adjustment system includes microcapsule coated temperature-sensitive coagulant 2-3 parts and in-situ whisker generation precursor 1-2 parts.The application realizes underwater rapid curing, strong bonding, high toughness, long-term protection integration, and provides a high-performance solution for the rapid repair and emergency repair of hydraulic and marine infrastructure.

The application provides a kind of fiber sealing material and its preparation method, belong to sealing material technical field.The preparation method of fiber sealing material provided by the application includes the following steps: the solution of fiber, solvent, microfibrillated cellulose, latex, additive, filler and coupling agent modified microfibrillated cellulose is mixed to obtain slurry;The slurry and flocculating agent are mixed, then shearing is carried out to obtain microfloc polymer;The microfloc polymer and the solution of coupling agent modified inorganic microparticle are mixed, papermaking is carried out to obtain fiber sealing material.The application adds microfibrillated cellulose in slurry system, uses modified microparticle retention system, through the synergistic effect of hydrogen bond combination between microfibrillated cellulose and slurry system and modified microparticle retention system retention, the flatness of fiber sealing material surface and the compatibility and binding force between fiber sealing material surface and glue line are improved, so as to improve the firmness of fiber sealing material surface printing glue line.

The invention provides a carbon fiber composite material interface enhanced modulus decreasing interface transition layer construction method and a product, and relates to the technical field of composite material interface enhancement. According to the interface transition layer construction method, an aminated metal organic framework NH2-UIO-66 and a zeolite imidazole framework material ZIF-8 are introduced to serve as middle layers, and finally polyether amine PEA is grafted; a modulus decreasing interface transition layer of a three-layer structure is constructed and used for reinforcing the carbon fiber composite material; wherein from inside to outside, the first layer of the transition layer is NH2-UIO-66, the second layer of the transition layer is ZIF-8, and the third layer of the transition layer is PEA. According to the scheme, the interfacial shear strength between pure carbon fibers and epoxy resin is improved by 95.8%, and the performance of the carbon fiber composite material can be effectively improved.

The invention relates to the field of special films, in particular to a polypropylene-based ultrathin special film and a preparation method thereof. The film is prepared from the following components in parts by weight: 80 to 90 parts of isotactic polypropylene resin, 10 to 20 parts of syndiotactic polypropylene resin, 5 to 10 parts of a composite modifier, 5 to 10 parts of a compatilizer, 3 to 8 parts of amino modified nano silicon dioxide, 0.1 to 0.5 part of an antioxidant, 0.3 to 0.7 part of a lubricant, 0.1 to 0.3 part of an anti-hydrolysis agent, 0.1 to 0.3 part of a nucleating agent and 0.05 to 0.3 part of a light stabilizer. The special film prepared by the preparation method disclosed by the invention can still keep excellent mechanical bearing capacity under the ultrathin specification with the thickness of less than or equal to 20 microns, and the mechanical property, the flame retardant property, the weather resistance, the processability and the interfacial compatibility are synergistically improved.

The present application relates to a kind of preparation method of full solid battery double-layer ultrathin electrolyte film based on transfer printing technology.The present application utilizes the high voltage stability of halide layer and the high ionic conductivity of sulfide layer to synergistically improve the cycle life and high rate performance of battery and other performances through halide / sulfide double-layer electrolyte design.Further, the transfer printing process of multi-layer electrolyte film is designed specifically, and the gradient drying process can avoid substrate deformation, effectively prevent halide / sulfide interlayer cracking, and enhance the interlayer adhesion, achieving electrode thinning, high mechanical strength and interface stability.The present application solves the technical bottleneck of the application difficulty of double-layer electrolyte structure in full solid battery through material system optimization and transfer printing process innovation, and is suitable for the industrial production of high energy density solid state battery.

The application discloses a negative electrode adhesive, a negative electrode sheet, a lithium ion battery and a preparation method thereof. The method comprises the following steps: carbonizing a first adhesive to obtain a conductive adhesive, wherein the first adhesive is a polymer rich in at least one of a hydroxyl group, a carboxyl group and an amino group; and mixing a second adhesive and the conductive adhesive to obtain the negative electrode adhesive, wherein the second adhesive comprises polyacrylic acid. The negative electrode adhesive, the negative electrode sheet, the lithium ion battery and the preparation method thereof can effectively solve the problem of volume expansion caused by a silicon-based negative electrode material as a negative electrode active material.

This invention relates to the field of silicone rubber materials technology, and discloses a high-transparency biocompatible material for endoscope-assisted water bags and its preparation method. The raw materials for this invention's high-transparency biocompatible material for endoscope-assisted water bags include 80-90 parts by weight of α,ω-dihydroxypolydimethylsiloxane, 10-20 parts by weight of silanol polylactic acid, and 0.04-0.07 parts by weight of catalyst, etc. This invention uses non-toxic and non-irritating silicone rubber and highly biocompatible polylactic acid as the matrix, which is non-irritating to the human body. The prepared material is suitable for use in medical devices such as endoscope-assisted water bags. The improved interfacial properties and compatibility between polylactic acid and α,ω-dihydroxypolydimethylsiloxane reduce the likelihood of interfacial defects, maintaining good light transmittance, tensile strength, and elongation at break. When used as an endoscope-assisted water bag, it allows for better observation, and polylactic acid imparts good biodegradability to the silicone rubber material.

The invention belongs to the technical field of carbon fiber surface treatment, and provides a carbon fiber surface treatment method based on solvation layer regulation and control and a carbon fiber. The method comprises the following steps: placing carbon fibers in an electrolyte for electrochemical treatment to obtain pretreated carbon fibers; carrying out post-treatment on the pretreated carbon fiber; the solute of the electrolyte comprises ammonium bicarbonate and / or ammonium bisulfate; the electrolyte contains a solvation structure regulating agent, and the solvation structure regulating agent contains one or more of ethylene glycol, glycerol, urea and propylene glycol. According to the surface treatment method, the content of oxygen-containing functional groups on the surfaces of the carbon fibers is increased by 40% or above, the tensile strength of carbon fiber monofilaments is reduced by not more than 10%, and the interface bonding performance of a composite material prepared from the treated carbon fibers and vinyl resin is improved by 30% or above.

This invention discloses a carbon fiber composite material for rail transit vehicles and its preparation process, relating to the field of carbon fiber composite material technology. The method uses carbon fiber cloth as a matrix, depositing a polydopamine layer on its surface, then loading graphene epoxide, and using the polydopamine layer to grow manganese dioxide nanosheets in situ to obtain a carbon fiber matrix. Epoxy resin is then prepolymerized by pouring it into a mold, and the carbon fiber matrix is ​​laid flat in the prepolymerized resin. Epoxy resin is then poured in again, and the mixture is heated and cured under a pressure of 45–50 N to obtain the carbon fiber composite material. The carbon fiber composite material prepared by this method exhibits excellent mechanical properties, with improved tensile strength and interlaminar shear strength, and can be widely used in vehicles, ships, and other fields, demonstrating high practicality.

This invention discloses an anti-aging power metering box cabinet material, relating to the field of organic materials technology. The anti-aging power metering box cabinet material comprises the following raw materials by weight percentage: 25%-35% unsaturated polyester resin, 11%-15% low-shrinkage agent, 0.5%-2% initiator, 2.5-8% additives, 35%-50% organic composite filler, and 15%-25% modified chopped glass fiber. This application adds the prepared modified chopped glass fiber to the unsaturated polyester resin, along with the remaining additives required for preparing the electrical cabinet material, to obtain the cabinet material for use in power metering boxes. The power metering box cabinet material prepared in this application has advantages such as excellent mechanical properties, stable environmental aging resistance, low dielectric loss, and low dielectric constant.

The invention discloses a gold-copper alloy anti-abrasion antibacterial composite coating and a preparation method and application thereof.The gold-copper alloy anti-abrasion antibacterial composite coating comprises a bottom layer and an anti-abrasion antibacterial modified layer, the bottom layer comprises chromium and chromium nitride, and the anti-abrasion antibacterial modified layer comprises an anti-abrasion antibacterial modifier and polysiloxane modified acrylic resin; the wear-resistant antibacterial modifier is prepared from the following raw material components in parts by mass: 30 to 50 parts of zinc-doped mesoporous silicon dioxide nanospheres, 5 to 10 parts of hydroxyethyl methacrylate phosphate, 1 to 5 parts of nano cerium oxide, 1 to 3 parts of carboxylated graphene oxide, 1 to 5 parts of a polyacrylic acid dispersant, 3 to 5 parts of a polyether modified polysiloxane flatting agent and 2 to 6 parts of a polymer defoaming agent. 1-3 parts of a photoinitiator; the composite coating has excellent wear resistance and antibacterial property.

The invention discloses a reaction type thermoplastic resin containing a branched structure, a preparation method and an epoxy composition thereof, and belongs to the technical field of high polymer materials, the structure is as follows: the resin has a long branched chain structure and an active end group, and compared with a thermoplastic resin with a linear structure, on the premise of similar number-average molecular weight, the resin has a higher specific surface area. The epoxy resin has more active end groups and better solubility, can participate in an epoxy resin curing reaction, forms holes in an epoxy system, improves phase separation and better absorbs impact energy. The preparation method comprises the following steps: adding phloroglucinol or 1, 2, 4-phloroglucinol, bisphenol, dihalogen diphenyl sulfone / ketone or dihalogen cyanophenyl into a polar aprotic solvent according to a certain proportion, adding a salt-forming agent sodium carbonate / potassium carbonate to carry out polymerization reaction, diluting with the polar aprotic solvent, acidifying, and carrying out a series of treatment to obtain the active hydroxyl-terminated branched polyether sulfone / ketone copolymer. Adding the copolymer into epoxy resin, and adding an anhydride curing agent to obtain the high-toughness epoxy resin composition.

The invention discloses a preparation method based on carbon element inorganic powder surface modification. The preparation method comprises the following steps: S1, surface pre-activation treatment: carrying out heat treatment on carbon-based powder; then, dispersing the carbon-based powder into a low-concentration weak oxidizing solution, performing ultrasonic treatment for 0.5-2 hours at 30-80 DEG C, performing mild oxidation, introducing a proper amount of hydroxyl functional groups on the surface of the powder as anchoring points of subsequent reaction, and then centrifuging, washing and drying to obtain pre-activated carbon-based powder; and S2, controllable deposition of an inorganic silicon layer: dispersing the pre-activated carbon-based powder obtained in the step S1 into an alcohol-water mixed solvent. According to the invention, a gradient transition structure of a carbon matrix-SiO2 hybrid layer-organic functional layer is constructed through a three-step method of pre-activation, inorganic layer deposition and organic grafting. Chemical bonds (Si-O-C, Si-O-Si or covalent bonds with organic groups) can be formed between the inorganic silicon layer and the carbon surface (through pre-activated oxygen-containing groups) and between the inorganic silicon layer and the external organic layer, the binding force is high, and stripping is not prone to occurring in the machining or using process.

This invention relates to the field of geotechnical engineering, specifically to a method for reinforcing calcareous sand based on a biomimetic tortoise-shell pattern geomembrane using layered embedding. This invention combines the biomimetic principles of tortoise-shell structures with modern geosynthetic material technology to construct a scientifically sound integrated "material-structure-process" solution, which is expected to provide a new technical approach for calcareous sand foundation treatment and promote the progress and development of marine geotechnical engineering technology.

The application provides a method for modifying a solid electrolyte interface, and the method for modifying the solid electrolyte interface by soaking ITO after polishing the solid electrolyte can obviously improve the interface performance of the solid electrolyte, greatly improves the critical current density, increases the ability of inhibiting lithium dendrites, and is beneficial to the improvement of the cycle life of a full solid-state battery.

The invention discloses a cathode-free solid-state battery based on a multi-hydrogen-bond polyurethane polymer and a preparation method, and belongs to the technical field of solid-state batteries. The negative-electrode-free solid-state battery comprises a positive electrode, an electrolyte layer and a copper foil current collector, wherein a polyurethane polymer with multiple hydrogen bonds is introduced into the electrolyte layer. The polyurethane polymer with multiple hydrogen bonds forms a dynamic cross-linked hydrogen bond network through a plurality of hydrogen bond donors and hydrogen bond receptors contained in a molecular chain, and has an excellent self-repairing function. The polymer is introduced into an electrolyte layer, real-time protection and repair of an electrolyte-electrode interface are realized by utilizing the self-repairing characteristic of the polymer, generation and expansion of interface cracks are effectively inhibited, and a more uniform and stable electrolyte / copper foil interface is constructed. And the uniform interface can guide lithium to be uniformly deposited on the surface of the copper foil current collector, so that the growth of lithium dendrites and the generation of dead lithium are avoided, and the coulombic efficiency, the rate capability and the long cycle stability of the negative-electrode-free solid-state battery are remarkably improved.

This invention discloses a method for in-situ generating a highly bonded Cr2O3 interface to improve the thermal shock resistance of coatings. The method involves a coating preparation technique, particularly in the process of preparing a coating on a Cr-containing metal substrate, where an electric field of specific intensity is applied during the high-temperature heat treatment stage. By utilizing the electric field to induce the outward diffusion of Cr ions and the inward migration of oxygen ions in the substrate, a dense Cr2O3 transition layer is in-situ induced at the interface between the coating and the metal substrate. This transition layer effectively alleviates the problem of thermal expansion coefficient mismatch between the ceramic coating and the metal substrate, releases interfacial thermal stress, and significantly enhances the bonding strength of the coating. This invention achieves control over the thickness of the transition layer by adjusting the current intensity. Experiments show that this method can significantly suppress the generation of microcracks during thermal shock cycling, thereby greatly improving the thermal shock resistance of the coating and effectively solving the problem of easy cracking and peeling of oxide coatings during high-temperature thermal cycling.

This invention relates to a lithium-ion battery electrode surface trimming system and method. The system includes a morphology detection device, a control unit, a multi-axis motion device, and a plasma jet processing device. The method acquires full-width three-dimensional morphology data of the dried electrode in real time, identifies excessively thick regions, generates a scanning processing path and process parameters, and controls an atmospheric pressure plasma jet to scan along the planned path. Using a combined physical sputtering and chemical etching mechanism, it non-contactly trims the thickness of the excessively thick regions and simultaneously performs in-situ plasma activation on the newly exposed surface. This invention enables online trimming of electrodes with micron-level precision, operates at temperatures below 150°C, and eliminates solid dust pollution. It simultaneously improves electrode thickness uniformity and interfacial adhesion and wetting performance, effectively enhancing the cycle life, consistency, and safety of lithium-ion batteries, and is suitable for large-scale continuous production.

The invention relates to a fluorinated modified MXene-based conductive composite material and a preparation method thereof, and belongs to the technical field of composite materials, Ti3AlC2 is subjected to fluorinated etching, a fluorine group is introduced, Ni < 2 + >, Co < 2 + > and La < 3 + > react with S < 2 > generated by disproportionation reaction of sulfur powder under a hydrothermal condition to generate metal sulfide nanocrystals, the metal sulfide nanocrystals are anchored on the surface of fluorinated MXene powder, and the fluorinated modified MXene-based conductive composite material is obtained. Meanwhile, ammonium fluoride supplements fluorine ions to further regulate and control surface groups, melamine is induced to form a titanium vacancy defect in subsequent heat treatment, active sites are enriched, an electron transmission path is optimized, nitrogen doping and heat treatment of dopamine form a nitrogen-doped carbon layer, a three-dimensional conductive network is constructed, the interface bonding force is enhanced, and the conductivity of the electrode is improved. In-situ generation of ZnIn2S4 and interlayer insertion of graphene oxide increase additional active sites and effectively inhibit agglomeration, so that the specific capacitance and cycling stability of the fluorinated modified MXene-based conductive composite material are synergistically improved.

This invention relates to the field of polyurea technology and discloses an antistatic waterborne polyurea coating and its preparation method, comprising component A (100 parts by weight of terminal isocyanate prepolymer); component B (6.8-13.7 parts by weight of diamine chain extender, 42-60 parts by weight of polyvinylpyrrolidone copolymer, and 1-4 parts by weight of PVP-modified carbon nanotubes). After modification with PVP dispersant, the carbon nanotubes exhibit better dispersibility in the waterborne polyurea coating, forming a uniform conductive and thermally conductive network, thus improving antistatic and thermal conductivity, while also enhancing the mechanical properties of the polyurea. The polyvinylpyrrolidone copolymer contains hydrophilic carboxyl and amino groups, exhibiting excellent dispersibility in the waterborne polyurea coating. Furthermore, the amino groups can react with the isocyanate groups of the terminal isocyanate prepolymer, thereby forming a three-dimensional chemical crosslinking effect, which synergistically enhances the tensile and tear strength of the polyurea coating.

The application provides a stainless steel paint and a preparation method thereof. By introducing modified filler A into the primer and introducing modified filler B into the topcoat, and by activating the surface of the stainless steel substrate, the modified filler A is selected from fumed silica subjected to surface modification treatment by an epoxy resin, and the modified filler B is selected from chitin nanofiber subjected to homogenization modification treatment. The interface performance of the surface of the stainless steel substrate is effectively improved, so that the primer can be quickly wetted on the surface of the substrate, quickly penetrate into the micropores on the surface of the substrate, and be chemically bonded and mechanically occluded with the substrate. After the primer is solidified, the topcoat is sprayed on the primer. The modified filler B enriches the types of chemical bonds in the topcoat system, forms a three-dimensional network crosslinked structure on the interface between the topcoat and the primer, significantly improves the compactness of the interface, and further intercepts the penetration of corrosion factors into the primer. The corrosion resistance of the paint is significantly improved. The paint has excellent corrosion resistance, is suitable for strong corrosion operation scenes, and is easy to implement and promote.

The application relates to the technical field of liquid flow batteries, and discloses a high-stability flow channel plate, a preparation method thereof and a liquid flow battery, which comprises the following steps: processing and shaping a conductive plate material, and performing plasma pretreatment to introduce active groups on the surface of the conductive plate material, so as to obtain a pre-oxidized flow channel plate; preparing film-forming slurry, wherein the film-forming slurry comprises a solvent, a dispersing agent, a perfluoroalkyl phosphonic acid and a conductive agent; soaking the pre-oxidized flow channel plate in the film-forming slurry, and performing a self-assembly reaction under light-proof conditions, so that the perfluoroalkyl phosphonic acid is chemically bonded with the active groups on the surface of the pre-oxidized flow channel plate through phosphonic acid groups, and the conductive agent is distributed in a hydrophobic film layer formed by the perfluoroalkyl phosphonic acid, so as to construct a hydrophobic conductive composite film; and cleaning and drying the flow channel plate after the reaction, so as to obtain the high-stability flow channel plate. The application has the advantages of high conductivity, hydrolysis resistance, acid and alkali resistance, high-temperature resistance, blistering resistance and low cost.