27 results about "Titanium fiber" patented technology

The invention discloses a titanium fibrofelt composite material and a PEM electrolytic tank containing the titanium fibrofelt composite material, and relates to the technical field of PEM electrolytic tanks. The titanium powder mixture is filled in the titanium fibrofelt base material on one side of the second surface of the titanium fibrofelt base material, and the particle size of the first titanium powder, the particle size of the second titanium powder, the mass ratio of the first titanium powder to the second titanium powder, and the porosity and the average pore size of the titanium fibrofelt base material are controlled to be within a proper range; the titanium fibrofelt composite material has the advantages that the titanium fibrofelt base material can be well filled with the titanium powder, and a pore structure with proper pore diameter and pore diameter distribution can be formed in the titanium fibrofelt base material, so that when the titanium fibrofelt composite material is used as an anode gas diffusion layer of a PEM electrolytic tank, the cooperative transmission effect of water and oxygen is good, the mass transfer loss in the operation process of the electrolytic tank is low, and the service life of the electrolytic tank is prolonged. The internal temperature of the electrolytic tank is easy to control.

The application relates to the technical field of titanium sintered felt, and provides a preparation method of titanium powder titanium sintered felt integration; the titanium powder titanium sintered felt integration is obtained by adopting the following steps: laying, stacking and high-temperature sintering of titanium fibers, and then coating glue on the sintered felt and covering titanium powder; the titanium powder titanium sintered felt prepared by the application has excellent gas-liquid transmission capacity, better mechanical strength and toughness, and is a good conductor with low cost; the titanium powder titanium sintered felt prepared by the application can simultaneously have the advantages of titanium felt and titanium powder by covering 1-5 microns of titanium powder on the surface of the titanium felt, and the performance is more superior; the release agent prepared by taking titanium organometallic as raw material has low surface tension, good chemical stability and thermal stability; the release agent obtained by compounding the titanium organometallic and polyethylene wax can adapt to the high-temperature processing and manufacturing process of the titanium sintered felt, and better release effect and production benefit are provided.

The embodiment of the invention discloses a flow field diffusion layer integrated structure, a preparation method thereof and an electrolytic bath, and belongs to the technical field of water electrolysis hydrogen production, and the flow field diffusion layer integrated structure comprises a flow field structure, a gas diffusion layer and a first binder. The flow field structure and the gas diffusion layer are arranged in a stacked mode in the first direction, the first bonding layer is arranged between the flow field structure and the gas diffusion layer, and the material of the first bonding layer comprises at least one of nickel powder, titanium powder, nickel fibers, titanium fibers, a carbon-based material and a high polymer material. The flow field structure, the first bonding layer and the gas diffusion layer form an integrated structure. According to the flow field diffusion layer integrated structure, the mass transfer efficiency can be improved, the dynamic response performance is improved, the energy efficiency is guaranteed, and the service life is prolonged.

The utility model discloses a titanium fibrofelt filter which comprises a filter body, an air inlet pipe is fixedly connected to the upper portion of the filter body, a titanium fibrofelt filter screen right facing the air inlet pipe is fixedly connected to the interior of the filter body, a lifting ring is arranged on the outer side of the titanium fibrofelt filter screen in a sleeved mode, and four sets of connecting lugs are fixedly connected to the outer side of the lifting ring. A lead screw is in threaded connection with the interior of one set of connecting lugs, the lower portion of the lead screw is rotationally connected to the upper portion of the inner side of a filter, a motor is fixedly connected to the upper portion of the filter, the power end of the motor is fixedly connected with the lead screw, sliding rods are slidably connected with the interiors of the three sets of connecting lugs, and the upper ends and the lower ends of the sliding rods are fixedly connected with the filter. The interior of the lifting ring is fixedly connected with an annular air pipe, the upper part of the annular air pipe is rotatably connected with a plurality of groups of connecting pipes, the inner sides of the connecting pipes are fixedly connected with nozzles, and the titanium fiber felt filter screen is backwashed in a direct blowing manner, so that the washing effect is improved.

The present application relates to a kind of preparation method of titanium carbide fiber, belong to metallurgy and hard alloy preparation technical field.The present application uses titanium hydride as titanium source, carbon nanotube as carbon source, using molten salt method, in the tube furnace of argon protection, 700~900 ℃ reaction 3~5h, prepared fibrous titanium carbide, product is removed after washing other impurities and obtains high-purity titanium carbide fiber.Sodium chloride and potassium chloride binary salt are used as molten salt medium, which can effectively reduce the reaction temperature and reduce energy consumption.The preparation method of fibrous titanium carbide proposed in the present application has the advantages of low cost, simple process, low reaction temperature, short reaction time, etc.The prepared titanium carbide powder has high crystallinity and uniform particle size distribution.The salt can also be recycled and reused, reducing the synthesis cost and facilitating industrial production.

The present invention relates to a method for preparing an anode titanium-based porous transport layer, and belongs to the field of electrochemical technology. The method comprises the following steps: S1, laying titanium fiber felt by dry method; S2, pre-treating metal precursor powder by polyethylene glycol, cationic surfactant, coupling agent, polyvinyl alcohol, and polyaniline; S3, depositing the metal composite material onto the titanium fiber felt by chemical vapor deposition technology to obtain a titanium-based porous transport layer. The titanium-based conductive porous transport layer prepared by the present invention has the characteristics of more uniform surface, lower roughness, smaller interface contact resistance, better corrosion resistance, and longer service life. The technical solution of the present invention has simple steps and strong operability.

The application discloses a method for growing nano metal-oxide structure catalyst on a substrate (foamed nickel, nickel felt, foamed copper, foamed stainless steel, nickel mesh, stainless steel mesh, titanium fiber felt, stainless steel fiber felt, etc.) by using Joule heat method, and belongs to the field of material science and engineering technology and chemistry. The metal involved in growing the nano metal-oxide structure catalyst on the substrate includes Pt, Ir, Ru, Cu and Ag, and the oxide involved includes NiO, CoO, Fe2O3 and MnO. Firstly, a metal precursor dispersion solution A with a certain concentration is configured; after being uniformly dispersed, the A is uniformly sprayed on the surface of the substrate (or the substrate is soaked in the uniformly dispersed precursor solution A for a certain time), and the step is recorded as 1; the substrate B after spraying is connected with the positive and negative poles of a direct current power supply through pure copper wires with alligator clips at both ends, a certain power is output, and the process is continued for a certain time, and the step is recorded as 2; after repeating steps 1 and 2 for a certain number of times, the product is obtained through washing and drying. The method has the advantages of simple operation, high efficiency and reliability, wide application range, large-scale preparation, uniform and stable structure and the like.

The invention discloses preparation of a titanium black fibrofelt porous electrode regulated and controlled by a strain strategy and application of the titanium black fibrofelt porous electrode in advanced treatment of organic industrial wastewater. The electrode material with rich O vacancies and Ti < 3 + > sites on the surface is formed by regulating and controlling strain structures of surface mesoscale and atomic scale in the process that the titanium fibrofelt generates the hollow titanium black nanofibers in situ. The rich O vacancies can increase the electron migration ability of the system, and also can construct dominant adsorption sites for carbonate, activate the conversion of carbonate to CO3, and inhibit the quenching effect of carbonate on active oxide species such as hydroxyl free radicals and the like. The strain effect effectively regulates and controls the local microenvironment near the active site of the system, so that the system can be enhanced to generate more active oxide species, and the quenching effect of inorganic salt ions in water on the active species is inhibited. The preparation method of the electrode material is simple, large-scale production is easy, the electrode material can be directly used for an existing electrochemical device, and the transformation and operation cost can be greatly saved.

The utility model discloses a composite titanium fiber sintered felt, and relates to the technical field of sintered felts. The utility model comprises a titanium metal framework net, anti-abrasion layers are arranged on the upper surface and the lower surface of the titanium metal framework net, a first splicing piece is fixed to the left end of the titanium metal framework net, hanging frames are fixed to the front portion and the rear portion of the lower surface of the first splicing piece, a second splicing piece is fixed to the right end of the titanium metal framework net, and hooks used in cooperation with the hanging frames are fixed to the front portion and the rear portion of the upper surface of the second splicing piece. According to the titanium fiber sintered felt, the stability of the cylindrical structure formed by rolling the titanium fiber sintered felt is guaranteed through the first splicing piece and the second splicing piece, meanwhile, the anti-abrasion layer is located on the surface of the titanium fiber sintered felt, friction between the titanium fiber sintered felt and an external structure is reduced, and the titanium fiber sintered felt is prevented from being damaged.

The invention discloses a hybrid fiber polyurea composite flexible anti-puncture material and a preparation method thereof, a titanium fiber felt and an aramid fiber felt are superposed to form a fiber reinforcement, the fiber reinforcement is placed in a vacuum bag film system, and then a polyurea resin system is introduced through vacuum negative pressure for curing molding, and the invention relates to the technical field of composite materials. According to the hybrid fiber polyurea composite flexible anti-puncture material and the preparation method thereof, the polyurea, titanium fiber felt and aramid fiber felt hybrid composite material is adopted, materials with different characteristics are systematically integrated, and the multi-stage and synergistic protection effect is achieved. The titanium fiber felt has excellent rigidity and can make contact with the thorns at the first time on the surface of the protective layer, the concentrated stress of the thorns is effectively passivated and dispersed, and the thorns are prevented from easily penetrating through fiber gaps. When being subjected to high-speed impact, a polyurea molecular chain generates violent friction and internal friction, and a large amount of impact kinetic energy is converted into heat energy. When the stabbing device tries to penetrate, the polyurea layer can wrap the stabbing tip like viscous plasticine, and the stabbing tip is grabbed.

The utility model discloses a titanium fiber continuous cleaning device which comprises conveying belt frames, a conveying belt is fixedly connected between the conveying belt frames on the two sides, a fixing plate is fixedly connected to the upper portions of the conveying belt frames, a water inlet pipe is fixedly connected to the interior of the fixing plate, and two sets of water distribution pipes are fixedly connected to the interior of the water inlet pipe. An adjusting pipe is rotationally connected between the water distribution pipes on the two sides, a plurality of sets of nozzles are fixedly connected to the lower portion of the adjusting pipe, second fixing pieces are fixedly connected to the two sides of the adjusting pipe, first fixing pieces are fixedly connected to the outer sides of the water distribution pipes, and the first fixing piece on one side is fixedly connected with a first spring; the first spring is arranged on the outer side of the water distribution pipe in a sleeving mode, a gear ring is fixedly connected to one side of the second fixing piece on the other side, a tooth groove matched with the gear ring is formed in one side of the first fixing piece, the surface of the titanium fiber felt can be cleaned in a spray washing mode, the cleaning angle can be adjusted, and therefore the titanium fiber felt cleaning device can adapt to different environmental conditions and cleaning requirements.

The present invention relates to a method for modifying a titanium-based porous transmission layer using supercritical fluid technology, and belongs to the field of electrochemical technology. The present invention uses supercritical fluid technology to modify titanium fibers, which can achieve uniform and dense deposition of precious metals on the substrate, thereby obtaining a high-quality precious metal coating on the surface of the titanium fiber, improving the corrosion resistance of the titanium fiber, reducing the oxygen content of the titanium fiber felt, and improving the conductivity of the titanium fiber felt; at the same time, the precious metal layer plated on the surface of the titanium fiber has catalytic activity, which can reduce the overall electrolytic cell catalyst loading. Compared with the coating obtained by other methods, the coating obtained by the present invention has a more uniform thickness, stronger bonding force, and is not easy to fall off. The prepared titanium fiber felt has a lower resistivity and is more resistant to oxidation.

The application relates to the technical field of fabrics, and discloses a moisture-absorbing, sweat-releasing and antibacterial titanium fiber fabric and a preparation method thereof. The 2,4-bis(N,N-dihydroxyethylamino)-6-[N-(3-aminopropyl)methyl acrylamide]-1,3,5-homotriazine is used to graft modify the polyamide fiber fabric, the hydrophilic amide bond, imino and a large number of hydroxyl groups are grafted to the fabric surface, the hydrophilicity and the moisture regain of the fabric are significantly improved, and the moisture-absorbing and sweat-releasing performance of the fabric is improved. Meanwhile, the limiting oxygen index and the flame-retardant performance are improved. A large number of hydroxyl groups on the surface of the polyamide fabric can interact with the hydroxyl groups on the surface of the titanium dioxide precursor generated by hydrolysis of tetrabutyl titanate, the generated nanometer titanium dioxide can be uniformly loaded on the fabric surface, more photocatalytic antibacterial sites are exposed, and the antibacterial performance of the fabric is significantly improved.

The invention belongs to the technical field of acidic electrolyzed water catalysts, and particularly discloses a MoIrOx coating titanium fiber felt and a preparation method and application thereof.The method comprises the following steps that iridium trichloride, ammonium molybdate tetrahydrate and ultrapure water are subjected to ultrasonic thorough dissolution; heating and activating in an oil bath pan; uniformly coating the mixture on the surface of the titanium fiber felt which is cleaned by acid washing through a spray gun; the titanium fiber felt is fixedly adsorbed in a drying oven to be thoroughly dried, and high-temperature calcination is conducted in a muffle furnace; and when the temperature of the muffle furnace is reduced to the taking-out temperature, the titanium fiber felt is taken out and washed with ultrapure water, and the washed titanium fiber felt is placed in a drying oven to be dried. According to the MoIrOx coating titanium fibrofelt as well as the preparation method and the application thereof, the performance and the stability of the original titanium fibrofelt are improved, and the MoIrOx coating titanium fibrofelt has excellent activity and stability under fluctuating current in a proton exchange membrane and is of great significance in promoting the wide commercialization process of a proton exchange membrane water electrolysis technology.

The utility model discloses a titanium fiber waste recovery processing device which comprises a base, the upper surface of the base is fixedly connected with an extrusion box, a first hydraulic cylinder is fixedly installed on the side face of the extrusion box, the output end of the first hydraulic cylinder is fixedly connected with a push plate, an extrusion plate is arranged in the extrusion box, a sliding groove is formed in the side face of the extrusion plate, and a sliding block is arranged in the sliding groove. The upper surface of the base is fixedly connected with a second hydraulic cylinder, the output end of the second hydraulic cylinder is fixedly connected with a lifting plate, the lifting plate is hinged to one end of the connecting plate, a motor is fixedly installed at the bottom of the base, and the output end of the motor is fixedly connected with the threaded rod. The connecting plate drives the sliding block to move in the sliding groove, the push plate is made to conduct extrusion, titanium waste machining at multiple stations is achieved, the titanium waste recycling efficiency is improved, the use cost and the labor cost of the whole device are saved, the ejector plate moves upwards, the formed titanium waste is ejected out, and the machining efficiency is improved. The problem that titanium waste is difficult to take out after the push plate is formed is solved.

The invention discloses a titanium fibrofelt composite material and a PEM electrolytic tank containing the titanium fibrofelt composite material, and relates to the technical field of PEM electrolytic tanks. The titanium powder mixture layer is arranged on the second surface of the titanium fibrofelt base material layer, and the particle size and mass ratio of large-particle titanium powder to small-particle titanium powder in the titanium powder mixture layer and the porosity and the average pore size of the titanium fibrofelt base material layer are controlled to be within a proper range, so that the titanium powder mixture layer has a pore structure with proper pore size and pore size distribution; and when the obtained titanium fiber felt composite material is used as an anode gas diffusion layer of a PEM electrolytic tank, the cooperative transmission effect of water and oxygen is good, the mass transfer loss in the operation process of the electrolytic tank is low, and the internal temperature of the electrolytic tank is easy to control.

The application relates to a preparation method of titanium felt toughened boron carbide ceramics and belongs to the technical field of composite materials. Firstly, boron carbide ceramic powder is pre-ground and pre-mixed, different particle size sintered two phases are crushed and uniformly mixed, Al powder is added in a small number of times and a large amount for pre-mixing, and mixed powder with good sphericity and solid rate is obtained through spray granulation; secondly, a titanium fiber felt pretreatment process is carried out, titanium fiber felt cutting is carried out by using a modified tooling, a cold pressing device or an upper-middle-lower three-layer ceramic green body is used, and a more dense and closely fitted titanium fiber felt-boron carbide (Al)-titanium fiber felt-boron carbide (Al)-titanium fiber felt sintering structure is obtained through cold isostatic pressing; thereby, a high-strength cold blank is obtained, a sintering process is set through different reaction stages, and finally, high-toughness high-strength boron carbide-based ceramics are obtained. After final sintering, the average hardness of the titanium felt toughened boron carbide ceramics is above 49 Gpa, the fracture toughness can reach 8.5 MPa.m 1 / 2 The above, the bending strength can reach above 580 MPa.

This invention relates to a method for preparing crosslinking-free titanium carbide fibers and their applications. Titanium carbide fibers suffer from structural defects such as wrinkles and pores, as well as weak interfacial interactions, resulting in a relatively loose structure. This invention utilizes the synergistic effect of thermal tensile stress and the nanosheet interlocking structure between the external polymer protective layer and the internal MXene fiber layer to form a cyclic olefin copolymer chain polymer protective layer in situ on the fiber surface. This process effectively enhances the fiber orientation and reduces porosity. The high-performance MXene fibers prepared by this invention possess not only high mechanical strength (707.73 MPa) and ultra-high toughness (125.12 MJ / m²), but also... ‑3 It also has a high electrical conductivity of 11959.4 S cm⁻¹ ‑1 At the same time, fabrics woven from this high-performance MXene fiber not only have high electromagnetic shielding performance, but also excellent mechanical resistance and durability against harsh environments.

The invention provides a titanium diffusion layer with a hierarchical pore structure and gradient interface design and a preparation method thereof, and the preparation method comprises the following steps: respectively carrying out non-woven laying on drawn titanium fibers with different wire diameters, and then carrying out pre-pressing treatment to obtain a single-layer fiber felt; respectively carrying out vacuum sintering on the single-layer fiber felts to obtain single-layer fiber felts; the single-layer fiber felts are sequentially stacked according to the sequence that the diameters of the drawn titanium fibers increase from small to large, the stacked multi-layer fiber felts are subjected to secondary pre-pressing treatment, and a fiber multi-layer body is obtained; and the fiber multilayer body is subjected to secondary vacuum sintering and then cooled, and the titanium diffusion layer is obtained. The prepared titanium diffusion layer is used for a PEM hydrogen production system to solve the problems that in the prior art, a single hole structure is limited, interface bonding is poor, and mass and heat transfer is uneven, so that the overall reaction efficiency of the system is improved, the interface contact resistance is reduced, and the durability and stability of the diffusion layer are enhanced.

The utility model relates to the technical field of chromatographic column tubes, and discloses a liquid chromatographic column tube suitable for blood sample introduction, which comprises a column tube body, porous titanium sieve plates are arranged at two ends of the column tube body, threads are arranged at two ends of the column tube body, the average aperture of each porous titanium sieve plate is 20-50 microns, the porous titanium sieve plates are made of titanium, and the diameter of each porous titanium sieve plate is 20-50 microns. The porous titanium sieve plate is a porous structure wafer formed by sintering titanium powder or titanium fibers at high temperature, the outer wall of the porous titanium sieve plate is wrapped with the annular polyether-ether-ketone, and the outer wall of the annular polyether-ether-ketone is round. According to the utility model, adsorption of protein and the like in a blood sample is reduced through biological inertness of a titanium material so as to reduce the blocking risk, and the porous structure of the titanium sieve plate and the straight-through round holes in the column tube synergistically optimize the flow of the blood sample and a mobile phase; a stable environment and guarantee are provided for separating the blood sample in the column according to the action difference of each component and a stationary phase and analyzing and acquiring component information through a detector.

The invention belongs to the field of PEM electrolyzed water, and particularly relates to a PEM electrolyzed water self-supporting anode electrode and a preparation method and application thereof. The electrode comprises a porous titanium substrate and a catalyst layer, the material of the catalyst layer is represented by a formula M1aM2bOx, M1 is Ir, M2 is one of Ti, V, Cr, Mn, Fe, Co, Ni, Zr, Nb, Mo, Rh, Pd, La, Ta and Au, and b / a is greater than or equal to 1 and less than 1000. According to the self-supporting anode electrode, the problems of interface resistance and falling caused by the fact that a powder catalyst uses a binder are solved, the stability of the catalyst layer under long-term operation is further enhanced through the corrosion resistance and mechanical strength of the titanium fiber felt, on one hand, the durability of the substrate is improved, on the other hand, use of a precious metal platinum coating is avoided, and the service life of the catalyst layer is prolonged. And the cost of PEM electrolyzed water can be reduced.

The invention discloses a composite fiber for in-situ growth of a COF coating on a nickel-titanium matrix and a preparation method and application of the composite fiber. The method comprises the following steps: firstly, carrying out acid etching and hydrothermal oxidation treatment on nickel-titanium fibers, and forming a phosphorus-doped titanium oxide nanosheet substrate on the surfaces of the nickel-titanium fibers; the COFDVA-ETTA coating is prepared by the following steps: firstly, preparing a COFDVA monomer, then performing amino functionalization through silanization, sequentially grafting an aldehyde group monomer DVA, and finally performing Schiff base reaction with an amino monomer ETTA under the assistance of ultrasonic waves to quickly construct the COFDVA-ETTA coating in situ. According to the coating, efficient and selective adsorption of various BPs is achieved through hydrogen bonds, pi-pi accumulation and hydrophobic interaction between functional groups such as imine bonds and vinyl of the coating and bisphenol compounds. When the fiber is used as a solid-phase microextraction fiber to be combined with high performance liquid chromatography, the fiber shows high sensitivity, wide linear range, low detection limit and good precision in detection of five BPs, and the fiber coating is high in stability, excellent in reusability and suitable for rapid analysis and detection of trace BPs in an environmental water sample.

The sweater comprises a sweater body and sleeves, the sweater body comprises a front part and a rear part, the front part and the rear part are connected in a sewing mode, the sleeves are symmetrically arranged on the two sides of the sweater body, and the fixed ends of the sleeves are connected with the front part and the rear part in a sewing mode. The front part, the rear part and the sleeves are all formed by weaving titanium fiber yarn and cotton yarn through a sesame bottom jacquard weaving method, the titanium fiber yarn forms a first pattern area of the surface layer of the sweater, and the cotton yarn forms a second pattern area of the surface layer; the sweater suit comprises the sweater, and the sweater absorbs moisture, is breathable, good in wearing comfort, easy to clean and good in sunscreen and antibacterial effects.

The invention discloses an airborne radioactive Po-210 purification device, which is used for being arranged in a purification system for covering gas containing Po-210 species, and comprises a Po-210 aerosol purification module and a Po-210 steam purification module which are sequentially arranged along an airflow direction, the metal fiber felt is made of metal fibers, and the metal fibers are selected from at least one of stainless steel fibers, nickel fibers, copper fibers, iron fibers and titanium fibers; the surface of the metal fiber is loaded with a first active material having a strong chemical adsorption effect on Po-containing species, and the Po-210 steam purification module comprises a porous carrier and a second active material loaded on the surface of the porous carrier, covering gas containing Po-210 species sequentially flows through the Po-210 aerosol purification module and the Po-210 steam purification module, so that the Po-210 aerosol and the Po-210 steam are respectively filtered, captured and chemically adsorbed, and the airborne radioactive Po-210 is purified.

The utility model provides a directionally-arranged titanium fiber felt for strengthening gas-water transportation, which comprises a plurality of layers of titanium fiber sheets which are fixedly arranged in parallel, each layer of titanium fiber sheet is composed of a plurality of titanium fiber filaments which are arranged in parallel, the titanium fiber filaments of two adjacent layers of titanium fiber sheets are stacked at a preset angle, and the preset angle is 20-90 degrees; the titanium fiber filaments of the two layers of titanium fiber sheets at an interval of one layer are arranged in the same position; and a plurality of parallelogram felt holes which are communicated with one another are formed in the titanium fiber felt. The titanium fiber felt provided by the utility model is provided with directionally arranged pores, so that the air-water transportation efficiency can be improved.

The application discloses a kind of preparation of regulating sub-titanium oxide fiber felt porous electrode by strain strategy and its application in organic industrial wastewater advanced treatment. By regulating the strain structure of surface mesoscale and atomic scale in the process of in-situ hollow sub-titanium oxide nanofiber generated by titanium fiber felt, electrode material with rich O vacancy and Ti 3+ Site on the surface is formed. Rich O vacancy can increase the electron migration ability of system, and also can build the advantage adsorption site of carbonate, activate carbonate to CO3 ·− Conversion, inhibit the quenching effect of hydroxyl radical and other active oxidative species on carbonate. The effective regulation of strain effect on the local microenvironment near the active site of system can strengthen the system to produce more active oxidative species, and inhibit the quenching effect of inorganic salt ions in water on active species. The electrode material preparation method is simple, easy to mass production, can be directly used in existing electrochemical device, can greatly save the modification and operation cost.