29 results about "Biomimetic coating" patented technology

The invention discloses a preparation method of a high-temperature-resistant high-strength polyimide composite material, and relates to the technical field of polyimide composites.The preparation method comprises the following preparation steps that S1, a customized silane coupling agent is prepared; s2, preparing a bionic dynamic interface modified reinforcing filler, wherein the modified reinforcing filler is synergistically modified through a bionic coating and a customized silane coupling agent; and S3, preparing a polyimide precursor solution containing the dynamic network. According to the preparation method of the high-temperature-resistant high-strength polyimide composite material, through the integrated design of'customized silane coupling agent + bionic dynamic interface modification + dynamic network-containing polyimide precursor + gradient hot-pressing curing ', the glass-transition temperature of the prepared composite material is greater than or equal to 335 DEG C, the tensile strength is greater than or equal to 208 MPa, and meanwhile, the thermal repair efficiency at 180-250 DEG C is greater than or equal to 87%; the technical bottleneck that high temperature resistance, mechanical strength and repairing performance of the material are difficult to consider at the same time in the prior art is solved.

The invention belongs to the technical field of biomimetic materials, and discloses a titanium alloy implant surface biomimetic coating and a preparation method thereof.The biomimetic coating comprises a porous titanium support layer, a micron-sized porous titanium layer is prepared through plasma spraying, and then nano-hydroxyapatite is doped to improve osteoinductivity; the graphene enhancement layer is modified, a graphene oxide film is electrochemically deposited, the graphene oxide film and the titanium substrate are covalently bonded through a silane coupling agent, and strontium ions are loaded to promote osteogenic differentiation; an antibacterial active layer and in-situ reduced graphene oxide form a three-dimensional network conductive structure, tantalum-doped carbon nitride quantum dots are loaded through ultrasonic dispersion and embedded between graphene layers to form an antibacterial phase, and then magnesium silicate nanowires are subjected to hydrothermal growth to form a bioactive phase. Through triple bionic design of porous titanium, ion release / photo-thermal response and PDA adhesion, the bone bonding strength, antibacterial property, wear resistance and corrosion resistance of a coating interface are improved.

This invention relates to the field of zinc alloy surface modification technology, and particularly to a corrosion-resistant medical zinc alloy, its preparation method, and its applications. The preparation method includes the following steps: weighing raw materials according to the chemical composition of the zinc alloy; cleaning the surface of the raw materials; smelting, refining, and casting to obtain an ingot; subjecting the ingot to equal-channel angular extrusion deformation to obtain an extruded zinc alloy; performing high-energy ion implantation on the zinc alloy to obtain a nitrogen-ion-implanted zinc alloy; and preparing a coating on the surface of the nitrogen-ion-implanted zinc alloy to obtain the final product. This invention achieves a high-adhesion, dense, and uniform deposition effect on the alloy surface through the synergistic control of "equal-channel angular extrusion + high-energy nitrogen ion implantation + biomimetic coating deposition," solving the problem of severe galvanic corrosion at localized sites in existing zinc alloys under corrosive environments. Simultaneously, the dense deposition layer helps inhibit rapid dissolution of the zinc alloy surface, significantly reducing the corrosion rate of the zinc alloy in corrosive environments.

The invention provides a port oil spilling sewage treatment method and device, and relates to the technical field of port sewage treatment. The method comprises the following steps: gathering dispersed oil drops in sewage through an acoustic standing wave field to form an oil drop aggregate; injecting a magnetic nano-fluid of which the surface is modified with a bionic coating to form an oil drop-magnetic nano-particle complex; applying a gradient magnetic field to directionally migrate the complex; separating the migration complex from the water phase to obtain oil stain and purified water; and finally, the oil stains are desorbed from the surfaces of the magnetic nano-particles, and the magnetic nano-particles are recovered. According to the method, through the synergistic effect of acoustic aggregation, magnetic adsorption, magnetic field migration and multi-stage separation, efficient separation of oil drops and cyclic utilization of materials are achieved, and the method has the advantages of being high in treatment efficiency, environmentally friendly and low in cost.

The present application relates to the technical field of PTFE porous membrane, in particular to a kind of SPEEK filled PTFE porous membrane and its preparation process, the present application selects PTFE porous membrane as base film material, selects SPEEK as filler, with non-ionic surfactant polyoxyethylene laurate as hydrophilic layer element, induces dopamine to be self-polymerized on the surface of PTFE porous membrane and constructs mussel biomimetic coating;Then PEEK is treated with concentrated sulfuric acid, prepares SPEEK, and grafted gallic acid modified chitosan after activation;Carboxylated fiber nanocrystal, polycarboxyl group conjugated microporous polymer and composite SPEEK are introduced as filler;By controlling the ratio of carboxylated fiber nanocrystal, polycarboxyl group conjugated microporous polymer and composite SPEEK in mixed solution, introducing auxiliary agent in mixed solution, complex crosslinking network is constructed, PTFE porous membrane is endowed with durable antibacterial, corrosion resistance and high stability, the use range of PTFE porous membrane is widened, and the service life of PTFE porous membrane is prolonged.

The invention discloses a salvinia natans bionic coating based on a reusable thermosensitive softening template and deep pinning and a preparation method of the salvinia natans bionic coating. The coating is prepared from epoxy resin, ferroferric oxide nano particles, ferroferric oxide micro particles, ferroferric oxide particles modified by 3-aminopropyl triethoxy silane, corn starch, polyvinylpyrrolidone, octadecylamine, perfluorooctyltriethoxy silane and deionized water, and the ferroferric oxide particles are prepared from epoxy resin, ferroferric oxide nano particles, ferroferric oxide micro particles, 3-aminopropyl triethoxy silane modified ferroferric oxide particles, corn starch, polyvinylpyrrolidone, octadecylamine, perfluorooctyltriethoxy silane and deionized water. Preparing magnetic slurry from epoxy resin, a solvent and ferroferric oxide particles, and performing staged magnetic field curing; preparing a thermosensitive template with modified ferroferric oxide as an inner core and corn starch as a shell, and embedding the micro-bulge tips under thermosensitive and magnetic field conditions; and carrying out hydrophobization treatment under the protection of the template, and finally heating and ultrasonically recovering the template. The cost is reduced through a reusable template, the wettability gradient is kept stable through deep pinning, ordered distribution of particles is achieved through layered magnetic field regulation and control, the gas film coverage rate and stability are improved, and the method is suitable for ships, ocean engineering and antifouling protection.

The invention discloses a degradable magnesium alloy intravascular stent based on bionic hydrogel and nitric oxide double-path release and a preparation method and application thereof. The method comprises the steps that a magnesium alloy base material is subjected to alkali heat treatment; immersing the treated magnesium alloy into a silane coupling agent for reaction; the photopolymerization reaction liquid is treated to the surface of the silanization modified magnesium alloy, and polymerization is conducted through ultraviolet irradiation; immersing the magnesium alloy with the hydrogel coating into a polyarginine solution, and grafting polyarginine onto the surface of the hydrogel; a sample is activated through EDC / NHS and then immersed in a selenocystamine solution for a reaction, and the bionic composite coating, with the exogenous / endogenous dual-path nitric oxide release function, of the degradable magnesium alloy intravascular stent is obtained. The invention successfully constructs the bionic coating integrating cell membrane-imitating anti-fouling and exogenous / endogenous dual-path NO release functions, and the coating effectively solves the key problems of corrosion control, thrombus formation resistance, functional re-endothelialization coordinated regulation and the like faced by the degradable magnesium alloy intravascular stent.

The invention discloses a polyurethane surface bionic coating capable of synergistically resisting blood coagulation and promoting endothelialization and a preparation method, and relates to the technical field of biomedical materials. According to the invention, tannic acid (TA) and polylysine (PLL) are subjected to a Schiff base and Michael addition reaction in a weak alkaline environment to form a covalent cross-linked bionic intermediate layer, and the intermediate layer synergistically loads heparin (Hep) and laminin (Ln) on the surface of polyurethane (PU) to form a multifunctional active coating, so that the polyurethane material with the bionic coating is formed. The surface coating of the polyurethane material significantly reduces platelet adhesion and hemolysis rate, promotes endothelial cell adhesion, proliferation and functional expression, and inhibits excessive proliferation of smooth muscle cells, and the polyurethane material is simple in preparation process, mild in condition and suitable for surface functional modification of blood contact materials such as artificial blood vessels and interventional catheters.

The invention belongs to the technical field of biomimetic materials, and particularly relates to a nanopore titanium material, a preparation method thereof and application of the nanopore titanium material in preparation of an implant titanium abutment. According to the method, a titanium material serves as an anode to be placed in an electrolyte, a two-electrode system is adopted for conducting anodic oxidation treatment on the titanium material, the titanium material subjected to anodic oxidation treatment is obtained, the anodic oxidation treatment is conducted through direct-current voltage, and the direct-current voltage is smaller than 40 V; and the titanium material obtained after anodic oxidation treatment is subjected to annealing treatment, the nanopore titanium material is obtained, and the surface of the nanopore titanium material is provided with a titanium oxide coating of a nanopore structure. According to the nanopore titanium material obtained through the preparation method, on the basis that the working intensity of an implant gingival penetrating part abutment is met, the effects of resisting inflammation and promoting soft tissue integration are achieved due to the bionic coating of the nanopore structure, and therefore the effect of improving implant soft tissue integration is further achieved.

The application discloses 3D printing structural color ink and a preparation method and application thereof, and relates to the field of 3D printing ink. The ink comprises a prepolymer and an organic solvent B in a mass ratio of 100:(9-15), and the prepolymer comprises an acrylate nematic liquid crystal monomer, a chiral dopant, a chain extender, a photoinitiator and a catalyst. The 3D printing structural color ink of the application has proper rheological properties and shear thinning characteristics by introducing the volatile organic solvent B, is suitable for extrusion type 3D printing technology, has high printing precision, has a large available resolution range, and the obtained formed part has excellent mechanical properties and bright angle-dependent structural color; the color can be adjusted by the content of the chiral dopant, and the 3D printing structural color ink can be used in the fields of multi-color printing, information storage and bionic coating, etc.

This invention discloses a method for surface-modified biomaterials and a modified pericardial material, relating to the field of biomedical materials technology. The method includes the following steps: S1, providing animal pericardial material cross-linked with glutaraldehyde; providing a bridging molecule containing a first bridging group and a second bridging group, and a phosphorylcholine polymer with a third bridging group at its end; binding the first bridging group to an aldehyde group on the surface of the pericardial material via a first covalent reaction; binding the second bridging group to the third bridging group via a second covalent reaction, thereby achieving grafting of the phosphorylcholine polymer onto the material surface; the first covalent reaction and / or the second covalent reaction include Schiff base formation and reductive amination processes. The modified pericardial material prepared in this application introduces a phosphorylcholine biomimetic coating, which can improve blood compatibility on the material surface, reduce activation of the coagulation system and platelet adhesion, and inhibit the initiation of calcium ion deposition on the material surface, while exhibiting high safety.

The invention relates to the technical field of surface bionic micro-nano structures, in particular to a bionic rigid-elastic coupling microstructure anti-drag coating and a preparation method thereof. According to the preparation method of the bionic rigid-elastic coupling microstructure anti-drag coating, the hydrophobic property of polydimethylsiloxane (PDMS) and the inherent magnetic property of Fe3O4 or CIP are utilized, the bionic coating with the rigid-elastic coupling microstructure is prepared on a stainless steel substrate through a magnetic field induction method, and the bionic coating has good underwater self-adaptive anti-drag performance. When the surface of the coating is in a water flow environment, the surface is subjected to a certain water pressure, and the rigid-elastic coupling microstructure is subjected to self-adaptive deformation. Wherein elastic deformation can absorb a part of energy, the turbine effect of the microstructure can decompose a large turbine into small turbines, and the small turbines and the dynamic rigid-elastic coupling microstructure jointly act to cope with water flow changes and reduce resistance. And after the surface water pressure is reduced, the microstructure recovers to the original height, and meanwhile, a relatively low solid-liquid contact area is kept.

The invention discloses an ultraviolet crosslinking halogen-free flame-retardant cable material and a preparation method thereof. The cable material is prepared from an ethylene-vinyl acetate copolymer, a polyolefin elastomer, a reactive modified composite flame-retardant filler, a lubricant, an anti-dripping agent, a photo-crosslinking agent and a photoinitiator through microwave pretreatment, melt blending, ultraviolet irradiation and heat-assisted post-curing. Wherein the flame-retardant filler is constructed by biomimetic coating of aluminum hydroxide with polydopamine, modification with vinyl silane and chemical anchoring of melamine cyanurate and aluminum hypophosphite, and a'core-shell 'structure with a firm interface and crosslinking activity is formed. Through cooperation of filler interface engineering, flame-retardant system optimization and process innovation, the oxygen index of the material reaches 31.8-34.5%, the flame-retardant grade reaches UL94 V-0 grade, the tensile strength is kept at 17.5-19.8 MPa, the gel content exceeds 73%, the smoke density is remarkably reduced to 115-130 Ds, the comprehensive performance is excellent, and the material is suitable for a high-end cable insulating layer or sheath layer.

The application relates to a preparation method of a high-entropy alloy powder and a surface biomimetic ploughshare self-sharpening coating, which comprises the following steps: pretreating the surface of a base material 65Mn steel; preparing Al2FeCoNiCrW 0.5 The size of the high-entropy alloy powder is 200-300 meshes; a surface biomimetic coating is prepared by adopting a laser cladding method, high-energy-density laser beams are used to melt the high-entropy alloy powder and the surface material of the contacted base material together, a metallurgical reaction is caused, and finally, the cladding layer with excellent performance is formed by rapid cooling and solidification; wherein the back of the ploughshare is cladded to obtain a ribbed biomimetic anti-friction wear-resistant structure, and the front of the ploughshare is cladded to obtain a convex biomimetic anti-friction wear-resistant structure. The high-entropy alloy coating is prepared on both sides of the ploughshare blade by using the laser cladding technology, so that two biomimetic surfaces with different wear resistances are formed, the blade becomes sharper with wear, the self-sharpening effect is achieved, and the wear resistance and the anti-friction performance of the surface of the ploughshare are improved.

The invention provides a bionic miniature explosive ordnance disposal device for precise approaching type energy-gathered cutting of detonating electronic elements, and relates to the technical field of bionic unmanned aerial vehicles. According to the device, low-feature hidden approaching is achieved through wave absorption and bionic coating on the surface of a bionic fuselage; determining coordinates of a target element through infrared, satellite and visual multi-mode detection analysis; and the flight control module solves the attitude deviation of the fuselage and issues an alignment and operation instruction, and the attitude adjustment module corrects the attitude through differential deflection of the wings, so that the tail load is accurately aligned with the target. During operation, the telescopic mounting base is controlled to stretch out to build the optimal burst height, and the micro energy-gathered cutting module excites the transient energy generating medium to drive the metal shaped charge cover to turn over to form high-speed metal jet flow. According to the invention, integration of the miniature flight platform and the energy-gathered load is realized, deep cutting and local physical isolation of the core structure of the detonating element can be completed within microsecond-level time, and the explosive-handling safety efficiency and the operation precision are improved.

The invention discloses a method for surface modification of a biological material and a modified pericardium material, and relates to the technical field of biomedical materials. The method comprises the following steps: S1, providing an animal pericardium material subjected to glutaraldehyde crosslinking treatment; providing a bridging molecule comprising a first bridging group and a second bridging group, and a phosphorylcholine polymer terminal-modified with a third bridging group; combining the first bridging group with the aldehyde group on the surface of the pericardium material through a first covalent reaction; combining the second bridging group with the third bridging group through a second covalent reaction to realize grafting of the phosphorylcholine polymer on the surface of the material; the first covalent reaction and / or the second covalent reaction comprise Schiff base formation and reductive amination processes. According to the prepared modified pericardium material, the phosphorylcholine bionic coating is introduced, the surface blood compatibility of the material can be improved, blood coagulation system activation and platelet adhesion can be reduced, deposition starting of calcium ions on the surface of the material can be inhibited, and safety is high.

This invention belongs to the field of biomimetic materials technology and discloses a biomimetic coating for titanium alloy implant surfaces and its preparation method. The biomimetic coating comprises: a porous titanium scaffold layer, prepared by plasma spraying a micron-sized porous titanium layer, then doped with nanohydroxyapatite to enhance osteoinductivity; a modified graphene reinforcement layer, comprising an electrochemically deposited graphene oxide film, covalently bonded to the titanium substrate via a silane coupling agent, and loaded with strontium ions to promote osteogenic differentiation; and an antibacterial active layer, comprising an in-situ reduced graphene oxide layer forming a three-dimensional mesh-like conductive structure, ultrasonically dispersed and loaded with tantalum-doped carbon nitride quantum dots embedded between the graphene layers to form an antibacterial phase, followed by hydrothermal growth of magnesium silicate nanowires to form a bioactive phase. Through the triple biomimetic design of porous titanium, ion release / photothermal response, and PDA adhesion, the coating improves bone bonding strength, antibacterial properties, wear resistance, and corrosion resistance at the interface.

The utility model relates to nozzle cleaning technical field, and disclose a kind of self-cleaning function's jet aeration device nozzle, including aerator nozzle shell, the top of the aerator nozzle shell is provided with water inlet, the bottom of the aerator nozzle shell is provided with nozzle mouth;Cleaning assembly, the cleaning assembly is set to the inside and outside of aerator nozzle shell and water inlet. By being provided with rotating guide vane, water flow state can be optimized, aeration uniformity is improved, cooperate with helical guide plate to enhance water flow kinetic energy, improve aeration efficiency, then, water drive turbine drives micro rotary blade to scrape nozzle mouth inner wall impurity in real time, effectively prevent nozzle mouth blockage, cooperate with superhydrophobic biomimetic coating, reduce the adhesion of impurity and wall in water flow, so that impurity is difficult to adhere, reduce the risk of blockage, make subsequent cleaning more easily, achieve the effect of reducing blockage.

The invention discloses an immune activation anti-tumor bionic nanomaterial and a preparation method and application thereof.The preparation method includes the steps that paclitaxel-sourced carbon dots (PCDs) are synthesized through a hydrothermal method, and the PCDs can inhibit tumor cell proliferation and migration and induce tumor cells ICD; then, assembling the M (at) P-In with Indoximod to form a nano-composite P-In; and finally, coating the P-In with a tumor cell membrane to form the bionic nano-composite material M (at) P-In. The M (at) P-In can inhibit the activity of IDO-1 while inducing ICD so as to alleviate the tumor immunosuppression microenvironment; and the nano complex is endowed with M (at) P-In tumor targeting capability and BBB penetrating capability by virtue of bionic wrapping of the cell membrane.

The present invention discloses a method for preparing a cemented carbide biomimetic coating tool material for high-speed railway turnout machining, the method comprising: selecting a WC-12Co coarse-grained cemented carbide tool blank as a substrate, performing a surface ion source-assisted magnetron sputtering treatment after surface cleaning to obtain a biomimetic coating on the substrate; and subjecting the prefabricated cemented carbide tool with the biomimetic coating to a diffusion heat treatment to obtain a final coated tool material. The cemented carbide coating obtained by the present invention has a biomimetic "brick-mud" layered structure, a coating / substrate interface bonding strength of ≥22MPa, a coating thickness of 3.1 to 3.7 microns, a coating surface room temperature hardness of ≥26GPa, and a coating surface hardness of ≥17GPa at 1000°C.

Inventors have synthesized peptides allowing an engagement of intact CD31 molecules on all the healthy endothelial cells and resting blood platelets and leukocytes that can enter in contact with an implanted device. Those cells can therefore receive the “leave-me-alone” signal delivered by the trans-homophilic engagement of CD31, which is essential to maintain the homeostasis in the circulation and vascularized tissues. Thrombotic or life-threatening occurrence of hemorrhagic or thromboembolic complications have impaired the use of endovascular devices. The devices bearing the mimicking peptides of the present invention are rapidly integrated, because they are perceived by blood platelets and leukocytes as a healthy endothelium, a “self’ component. Furthermore, their ability to be rapidly endothelialized with a physiologic endothelial cell phenotype also limits platelet and leukocyte activation at the site of device implantation in the long-term. Accordingly, the present invention relates to peptides mimicking the trans-homophilic CD31-CD31 domain 1 and 2 intercellular interaction.

The invention provides a preparation method and application of a modified bionic coating with resistance reduction and efficiency improvement performance, and belongs to the technical field of ship and ocean engineering coatings. The preparation method comprises the steps that a bionic fish scale array layer is printed on a substrate; carrying out cleaning pretreatment on the substrate to obtain an oil-free and water-free surface to be coated; the preparation method comprises the following steps: dissolving 1H, 1H, 2H, 2H-tridecafluoro-N-octyl silane in absolute ethyl alcohol, carrying out ultrasonic dilution, adding ZIF-8 particles, carrying out magnetic stirring and uniform dispersion, adding a waterborne polyurethane binder, and carrying out ultrasonic treatment to prepare a composite anti-drag spraying liquid; the surface of the bionic structure is evenly coated with the spraying liquid in a surface spray deposition mode, and the bionic drag reduction surface is formed after drying. The bionic anti-drag surface provided by the invention has a remarkable low-resistance characteristic, and the anti-drag rate can exceed 90% under the condition of simulating water flow; meanwhile, the surface has excellent super-hydrophobicity and environmental durability, the water contact angle is larger than 150 degrees, and good self-cleaning and anti-icing performance is shown in the marine environment.

The invention relates to the technical field of antifouling paint, in particular to environment-friendly organosilicone fish skin bionic paint and a preparation method thereof.The environment-friendly organosilicone fish skin bionic paint is composed of a component A and a component B; the component A is prepared from the following raw materials in parts by weight: 70 to 75 parts of hydroxyl-terminated polydimethylsiloxane, 15 to 25 parts of xylene, 2 to 4 parts of silicon dioxide, 2 to 5 parts of ferric oxide, 0.5 to 1 part of nano cuprous oxide and 1 to 3 parts of cuprous thiocyanate; the component B is prepared from the following raw materials in parts by weight: 40 to 45 parts of trimethylsiloxy triethoxy silane, 10 to 12 parts of acetylacetone, 40 to 50 parts of xylene, 0.01 to 0.02 part of organic tin and 1 to 3 parts of modified perfluoropolyether. The environment-friendly organosilicone fish skin bionic coating prepared by the preparation method has excellent adhesive force and antifouling property.

The invention discloses a controllable topological structure dynamic bionic coating as well as a preparation method and application thereof, and belongs to the technical field of medical materials. The preparation method comprises the following steps: firstly, constructing JNHDs by ferroferric oxide nanoparticles and silver nanoparticles in a sodium citrate solution through a photo-reduction reaction, then coating the surface with aminated silicon dioxide through a silanization reaction, then carrying out thiolation on a substrate containing a silicon dioxide layer, and finally, incubating PEGylated SiO2 (at) JNHDs and the thiolated substrate together, so as to obtain the silicon dioxide coated JNHDs. And preparing. The dynamic bionic coating constructed by the invention has long-term effectiveness, can damage a biological membrane through mechanical force under the activation of an external electromagnetic field, promotes the mesenchymal stem cells to be differentiated into osteoblasts by activating mechanical force sensitive calcium ion channels on the surfaces of the mesenchymal stem cells, overcomes the defects that a static bionic material cannot actively respond and dynamically intervene in a'surface competition ', and has a good application prospect. Finally, the purposes of preventing and treating periprosthetic infection and promoting prosthesis-osseointegration are achieved.

The invention relates to the technical field of tumor treatment, in particular to a nano complex as well as a preparation method and application thereof. The nano complex provided by the invention comprises hollow mesoporous silicon dioxide, a fluorocarbon chain doped in a shell skeleton of the hollow mesoporous silicon dioxide, CaO2 loaded in a cavity of the hollow mesoporous silicon dioxide, and a CD105 targeting ligand modified on the surface of the hollow mesoporous silicon dioxide through a biological membrane bionic coating. Furthermore, a Toll-like receptor 7 / 8 dual-agonist can also be contained in the cavity of the hollow mesoporous silica. The nano complex provided by the invention not only can effectively relieve the hypoxia and acidic microenvironment of tumors, but also can enhance the anti-tumor immune response through immunoregulation and improve the tumor treatment effect. Moreover, the medicine can be accurately targeted to tumor tissues, accumulation of the medicine at tumor parts is improved, and side effects on normal tissues are reduced.

This invention relates to the field of biomimetic materials, and particularly to a blood contact material, a biomimetic coating, its construction method, and its applications. The active ingredient in the blood contact material is formed by polymerizing vinyl lysine, oligoethylene glycol methyl ether methacrylate, and vinyl dopamine. The blood contact material is dissolved in a first buffer solution with a pH value of 7.5-9 to obtain a coating solution. The substrate is immersed in the coating solution for a first time and then removed, allowing the substrate surface to be covered with an intermediate coating. The polymerized poly(oligoethylene glycol methyl ether methacrylate) segments can form a dense hydration layer providing antifouling functionality. The polylysine segments can specifically bind plasminogen and tissue-type plasminogen activator, dissolving primary thrombi. The polydopamine segments have adhesive properties, improving the substrate's versatility and facilitating coating formation. The blood contact material can mimic the antifouling and fibrinolytic functions of the vascular endothelium, contributing to a comprehensive antithrombotic effect.

The utility model relates to textile fabric technical field discloses an anti -ultraviolet curtain, including connecting post, the outer wall left and right sides of connecting post all are fixedly connected with baffle, the outer wall sliding connection of connecting post has two protective curtains, the inner wall back of two protective curtains all is provided with lotus leaf bionic coating, the front side of two lotus leaf bionic coating all is provided with nano silver ion antibacterial layer, the front side of two nano silver ion antibacterial layer all is provided with waterproof antibacterial layer, the front side of two waterproof antibacterial layer all is provided with wormwood fibre layer, the front side of two wormwood fibre layer all is provided with nanometer titanium dioxide coating layer. In the utility model, through connecting post and baffle cooperation, guarantee the stable sliding of protective curtain, make the curtain open and close smoothly, lotus leaf bionic coating effectively waterproof, reduce the influence of water vapor to curtain and indoor environment, nano silver ion antibacterial layer and waterproof antibacterial layer cooperation, restrain the bacteria breeding, have promoted the sanitary degree of curtain.

The utility model relates to the technical field of textile fabrics, in particular to a waterproof textile fabric, which comprises a fabric main body consisting of a water-repellent outer layer, a dredging interlayer and a moisture-absorbing inner layer, the water repellent outer layer and the moisture absorption inner layer are respectively adhered to the upper side and the lower side of the dredging interlayer through materials, air holes which are uniformly distributed are formed in the moisture absorption inner layer, and the bionic coating is coated between the textile bottom layer and the bionic coating. Gas exchange between the upper breathable layer and the lower breathable layer is achieved through natural gaps of fiber pieces of the upper breathable layer and the lower breathable layer, the heat preservation layer is filled between the upper breathable layer and the lower breathable layer, the heat preservation effect can be achieved while micro-breathability is guaranteed, expensive materials are avoided through combination of conventional materials and basic processes, and the production cost is effectively reduced. And more people can use the textile fabric with better functionality.

The invention relates to the technical field of sensor bionic coatings, in particular to an anti-biological-pollution nano bionic coating and a preparation method and application thereof.The preparation method comprises the steps that a stainless steel substrate is sequentially polished, cleaned and subjected to plasma treatment, and the activated substrate is obtained; preparing a substrate with a bionic micro-nano composite structure; preparing a substrate with nanoparticles; preparing a substrate with an amino silane transition layer; preparing a substrate with a dynamic Schiff base structure; and soaking the substrate in a sodium cyanoborohydride solution for 1-2 hours, taking out the substrate, performing heat treatment, cleaning the substrate again, and blow-drying the substrate with nitrogen to obtain the substrate with the nano bionic coating. By adopting the steps, the spirulina polysaccharide, the polyethylene glycol and the rare earth doped nanoparticles in the bionic coating have good biocompatibility, no toxic and harmful substances are released, the detection object of the biosensor cannot be interfered, and secondary pollution cannot be generated.