164 results about "Composite surface" patented technology

The invention relates to the technical field of water treatment filter materials, in particular to an intelligent clean gradient composite water purification filter element and a preparation method thereof. The filter element adopts an integrated design of'natural gradient base material + ZIF-67 function enhancement + fluorescence-ultrasonic intelligent regeneration ': modified vegetable sponge is used as a porous support layer, a silica gel / ZIF-67 composite gradient layer is constructed on the porous support layer to realize adsorption and antibacterial dual functions, and dopamine-aluminum ions are used for composite surface modification to enhance hydrophilicity and interlayer binding force; a matched automatic system senses pollution in real time through the fluorescence monitoring module and triggers the ultrasonic regeneration module to complete self-cleaning, and the flux recovery rate is larger than or equal to 97.5%; the interception rate of the filtering element to anabaena under the operation pressure of 0.1-0.3 MPa is larger than or equal to 99.2%, the filtering flux is increased by 6-8 times compared with that of a commercial element, the filtering element can tolerate complex water quality in the coexistence of drugs and personal care products, natural vegetable sponge serves as a base material, and the filtering element has the advantages of biocompatibility and low cost and is suitable for drinking water purification and eutrophication water body treatment.

The invention discloses a method for solving linting and dusting during paperboard printing, and belongs to the technical field of papermaking. Comprising the following detailed steps: a slurry preparation process, surface sizing treatment and a drying and curing process, in the slurry preparation process, various high-quality fiber raw materials are carefully selected and mixed, the proportion of various fibers is accurately controlled according to the expected performance and quality requirements of the paperboard, and meanwhile, a proper amount of auxiliaries are added; and the binding force between the fibers and the strength of the paper are enhanced. The raw material ratio in the paperboard production process is precisely regulated and controlled, the specially-made composite surface sizing agent is adopted for surface treatment, and scientific and reasonable drying and curing processes are matched, so that the problems of linting and powdering of the paperboard in the printing process are effectively solved, and the printing quality and the production efficiency of the paperboard are improved.

A method of fabricating a semiconductor device includes providing a GaN substrate with an epitaxial layer formed thereover, the epitaxial layer forming a heterojunction with the GaN substrate, the heterojunction supporting a 2-dimensional electron gas (2DEG) channel in the GaN substrate. A composite surface passivation layer is formed over a top surface of the epitaxial layer, wherein the composite surface passivation layer comprises a first passivation layer portion formed proximate to a first region of the GaN device and a second passivation layer portion formed proximate to a second region of the GaN device. The first and second passivation layer portions are disposed laterally adjacent to each other over the epitaxial layer, wherein the first passivation layer portion is formed in a first process and the second passivation layer portion is formed in a second process.

The invention relates to the technical field of casting, and discloses a gas turbine blade casting method which comprises the following steps: preparing a composite surface coating containing zircon powder, silicon carbide particles, alumina micro powder, a silicon-aluminum composite sol binder and a xanthan gum stabilizer; a double-layer gradient coating structure with the inner layer rich in silicon carbide and the outer layer rich in aluminum oxide is formed on the surface of the wax mold through a step-by-step coating technology; and a gas turbine blade casting is obtained through shell preparation, sintering and high-temperature alloy pouring. Through the synergistic effect of a double-phase ceramic particle system, the gradient sintering characteristic of the silicon-aluminum composite sol and the suspension stabilization effect of xanthan gum, the problems that in a traditional coating system, surface layer sintering is uneven, particles are layered and settled, and a sol system is unstable are solved, the surface roughness Ra of a casting is smaller than or equal to 2.5 micrometers, the size precision is improved by 30% or above, and the casting quality is improved. The service life of the coating is prolonged to more than 7 days.

This invention discloses a method for designing the surface morphology of composite fiber reinforced polymer (FRP) bars with high bonding performance, and the FRP bars themselves. The method includes: S1, establishing a parametric model to simulate the behavior of the fiber reinforced polymer (FRP)-concrete interface based on the application environment requirements, including high-voltage electromagnetic environments and / or humid heat and corrosion environments; S2, constructing a composite surface morphology scheme with multiple rib structures of different functional orientations embedded in the FRP bar body based on the parametric model; S3, quantitatively analyzing the microscopic characteristics of the composite surface morphology scheme, and iteratively optimizing it with the objective functions of maximizing bond strength and minimizing crack width, considering temperature gradient and load coupling effects, to obtain the optimized geometric parameters of the composite surface morphology. This invention enables precise quantitative design of the surface geometric parameters of FRP bars and constructs a composite surface morphology scheme with multiple rib structures of different functional orientations embedded in the FRP bar body.

The invention provides a high-toughness deep-texture multi-layer visual effect composite board and a preparation method and application thereof, and belongs to the technical field of composite material preparation, and the method comprises the following steps: selecting a base material layer and carrying out base material pretreatment; forming a UV transfer printing texture layer on the surface of the base material layer; depositing an optical coating layer on the UV transfer printing texture layer; coating a color ink layer; covering a color cover bottom layer; preparing a deep-texture high-transmittance PU appearance layer; the PU appearance layer and the obtained structure are compounded through high-transmittance UV glue; performing surface treatment; and curing and molding. The manufactured composite board has the advantages of optical texture, folding resistance, water resistance, ultraviolet resistance, wear resistance, high and low temperature resistance and the like, through the structural design of optical coating, UV texture transfer printing, the high-transmittance PU layer and the like, the composite board with the hand feeling being deep texture and the vision being optical double texture is prepared, operation is easy, cost is low, and large-scale production can be achieved.

The invention discloses a flexible glass cutting fluid and a preparation method thereof, and the preparation method comprises the following steps: S1, adding cellobiose into DMF, then adding chloroacetic anhydride and pyridine, and carrying out a stirring reaction to obtain an intermediate; s2, adding the intermediate into DMF (Dimethyl Formamide), and then carrying out constant-temperature reaction on glycerol monocaprylate, 2-(2-hydroxyphenyl) benzothiazole and triethylamine to obtain a modifier; s3, uniformly mixing a modifier, sodium dioctyl sulfosuccinate and a polyoxyethylene polyoxypropylene block copolymer, so as to obtain a composite surfactant; s4, adding the composite surfactant, the propylene glycol, the defoaming agent, the sterilizing agent and the triethanolamine into the water, and uniformly stirring to obtain the cleaning agent. According to the prepared cutting fluid, the protection effect on a flexible glass base material and a surface functional layer of the flexible glass base material is remarkably improved while the excellent wettability is kept, microcrack generation and surface damage in the cutting process are reduced, and the cutting fluid is particularly suitable for precise glass processing of flexible display devices.

The invention discloses a composite woven bag and a preparation method thereof, and belongs to the technical field of woven bags, and the woven bag comprises the following components: polypropylene resin, calcium stearate, a polyolefin elastomer, polyethylene resin, nano cerium oxide, titanium dioxide and an auxiliary agent. The preparation method of the woven bag comprises the following steps: S1, preparing the inner layer surface material; s2, preparing an outer layer membrane material; s3, compounding the inner-layer membrane material and the outer-layer membrane material to prepare a composite surface material; and S4, the composite surface material is subjected to wire cutting to prepare a composite wire material, and the woven bag is prepared through the composite wire material. According to the woven bag woven by using the composite wires, the outer layer absorbs energy of ultraviolet rays through mutual circulation conversion in the nano cerium oxide, absorption of the woven bag to the ultraviolet rays is further reduced in cooperation with the reflection effect of the titanium dioxide, and the ultraviolet aging resistance of the woven bag is enhanced.

The present disclosure relates to a wiping product that is well suited to absorb and release a solvent onto an adjacent surface. The wiping product may also be configured to have excellent wear resistance. The wiping products can be used in a variety of applications and are particularly well suited for wiping unfinished surfaces, such as metal surfaces and composite surfaces, for removing contaminants, such as oils and greases. The wiping product is made of a hydraulically entangled and thermally bonded web comprising staple fibers and composite fibers.

The invention relates to the technical field of contact materials for high-voltage electrical equipment, and particularly discloses a contact material, a preparation method and a contact state monitoring method. The contact material includes a base material; the surface of the substrate material is combined with a porous HEAs framework, and the porous HEAs framework is provided with through holes perpendicular to the substrate material; the through holes are filled with phase change alloy, and the melting point of the phase change alloy is smaller than or equal to 200 DEG C. An integrated double-layer structure is adopted, a substrate material with excellent static electrical performance is combined with a porous HEAs framework-phase change alloy composite surface layer with dynamic response characteristics and self-adjusting performance, the contact material is endowed with the electric arc energy active dissipation, erosion self-inhibition and surface self-repairing capacity, and through doping modification of rare earth elements, the contact material can be subjected to surface self-repairing, so that the service life of the contact material is prolonged, and the service life of the contact material is prolonged. Consumption monitoring of the contact material in the working state is achieved, and the technical bottleneck that an existing contact material lacks active protection, self-adaptive repairing and state monitoring is solved.

The utility model relates to the technical field of hubs, and discloses a high-strength hub which comprises a hub body, an inner ring body used for installation is arranged on the inner side of the hub body, a plurality of connecting rods used for connection are evenly installed between the hub body and the inner ring body, positioning pins are inserted into center positioning holes of the connecting rods, and the relative positions of fixing blocks and the connecting rods are accurately positioned. The connecting rod is prevented from moving or rotating in the fixing block, it is guaranteed that the positions of all parts are accurate when the hub structure is stressed, the overall stability is improved, convenience is provided for installation of the connecting rod while the connecting rod is accurately positioned through the positioning pin, installation personnel can rapidly and accurately install the connecting rod according to the positioning pin, and the installation efficiency is improved. The S-shaped connecting rods, the fixing blocks, the connecting cover plates and other components are matched with one another, an efficient stress dispersion system is constructed on the hub composite surface, when a vehicle is stressed during running, external force can be evenly dispersed to all parts of the hub, local stress concentration of the composite surface is avoided, and the overall strength of the composite surface is effectively improved.

The utility model relates to the field of pistons, in particular to a composite surface treatment piston. The composite surface treatment piston comprises a head part, wherein the head part is covered with a hard anodic oxidation layer; the main body is covered with a black phosphate coating; and the skirt part is covered with a graphite layer. The composite surface treatment piston is provided with various coatings, so that the performance of each part of the piston can be enhanced as required, and the durability of the piston is improved.

The utility model discloses an oxidation -resistant composite surface treatment structure relates to oxidation -resistant processing technical field, including the treatment box, the upper end fixed mounting bracket of treatment box is equipped with the mobile seat below the inner top wall of mounting bracket, the inner top wall of mounting bracket is equipped with the mobile mechanism who is connected with mobile seat, the sidewall of mobile seat is equipped with device groove, the inside of device groove is equipped with elevating system, the below of mobile seat is equipped with blow -dry mechanism, the upper end left side of treatment box is equipped with the chute, the inside fixed of chute is equipped with the bearing hole board, the above of bearing hole board is equipped with the placing mechanism, the upper end right side of treatment box is equipped with the treatment groove. The utility model can conveniently carry out the loading and unloading operation to work piece, improve work efficiency, and can make the solution more fully with the work piece in the contact of the placing net tube inside, effectively improve the effect of oxidation -resistant processing.

This invention discloses an anti-scaling and anti-wax alloy material for circulating water systems and its surface treatment method, relating to the field of scale inhibition and prevention. The material includes an alloy matrix, the chemical composition of which, by mass percentage, is as follows: Cu 60-75%, Zn 15-28%, Al 3-8%, Ni 1.2-3.5%, Sn 0.5-2.0%, rare earth composite agent 0.1-0.8%, B 0.02-0.15%, with the balance being unavoidable metallurgical impurities. The metallographic structure of the alloy matrix is ​​ultrafine equiaxed crystals with an average grain size ≤5μm and a material density ≥99.5%. This invention utilizes a Cu-Zn-Al-Ni-Sn alloy system with a specific ratio of rare earth composite agent and trace amounts of boron, supplemented by ultrafine equiaxed crystal structure control, and then undergoes a composite surface treatment involving plasma nitriding, micro-arc oxidation, and vacuum impregnation with fluorosilane. The resulting anti-scaling and anti-wax alloy material for circulating water systems possesses both stable mechanical and electrical properties and excellent adaptability to the water environment.

The application discloses a composite surface treatment method for improving corrosion resistance and wear resistance of metal workpieces, and relates to the technical field of mechanical manufacturing and metal surface. The method comprises the following steps: pretreating a non-nitrogen-permeation stainless steel base; performing a multi-stage gas nitriding process on the pretreated base, sequentially carrying out strong nitriding at a first temperature and a first nitrogen potential decomposition rate, diffusion at a second temperature and a second nitrogen potential decomposition rate, and secondary strong nitriding at a third temperature and a third nitrogen potential decomposition rate, so as to build a continuous and dense nitride compound layer; and then coating a composite coating containing hard wear-resistant particles and thermosetting resin on the surface of the nitriding layer and performing solidification to form an encapsulation coating. The application also relates to a metal workpiece with a three-layer structure of a composite coating, a nitriding layer and a stainless steel base prepared by the method. The method is particularly suitable for non-nitrogen-permeation steels such as 2605 stainless steel, and can significantly improve the service life and comprehensive performance of the non-nitrogen-permeation steels under extreme working conditions of strong corrosion and high wear.

The invention relates to the technical field of paper printing processing, in particular to a coating liquid for improving the adhesive force of printing ink as well as a preparation method and application of the coating liquid. The water-based adhesive is prepared from the following raw materials in parts by weight: 25-30% of acrylic resin, 45-50% of a polyurethane-vinyl acetate-acrylate copolymer emulsion, 4-8% of a cellulose acetate butyrate resin emulsion, 2-5% of a composite surfactant and the balance of water, wherein the composite surfactant is prepared from C6-12 short-chain fatty alcohol, polyvinyl alcohol and sulfonate; according to the coating liquid, the interface bonding force between ink and paper can be improved, and the problems of poor adhesive force, ink falling and the like are solved. The drying rate of the drying agent can adapt to a high-speed flexographic printing or gravure process with the production line speed higher than 150 m / min, and set-off and adhesion faults caused by insufficient drying are effectively avoided. And under the storage or transportation condition that the relative humidity is larger than 75%, the after-tack phenomenon is prevented, and the strict requirement for special paper printing treatment is comprehensively met.

The invention provides a gradient functional composite material, a preparation method and application of the gradient functional composite material to a die-casting die. The composite material sequentially comprises a bonding layer, a metastable-state high-entropy alloy relaxation layer, a component gradient transition area and a dynamic densification composite surface layer from a base body to the surface. Wherein the relaxation layer can generate reversible martensite phase transformation at the die-casting temperature so as to actively dissipate thermal stress; the composite surface layer contains a low-melting-point nanophase, and can flow at high temperature to realize self-repairing and dynamic lubrication of surface micro-damage. According to the composite material, gradient transition and metallurgical bonding between layers are achieved through continuous process modulation. The coating system provided by the invention has multiple synergistic protection mechanisms of active stress digestion, interface gradient relaxation and surface self-adaptive repair, and can remarkably improve the thermal fatigue resistance, melting loss resistance and demolding performance of the die-casting die, so that the service life of the die is greatly prolonged.

The utility model relates to floor washing machine accessory technical field, and disclose a kind of cloth for floor washing machine to avoid entanglement, including from top to bottom sequentially composite surface cleaning layer, intermediate water absorption layer and bottom water-locking fixed layer, the surface of surface cleaning layer is equipped with bionic suction cup type concave and convex corrugation and anti-entanglement convex point, the anti-entanglement convex point is fixed with surface cleaning layer by flexible connecting structure, SAP water-absorbing resin particles are evenly embedded in the intermediate water absorption layer, and multiple longitudinal hollow fiber tubes are equipped between and bottom water-locking fixed layer, the pipe wall of longitudinal hollow fiber tube is equipped with multiple water-permeable micropores, the bottom water-locking fixed layer is seaweed fiber three-dimensional grid structure, and the grid gap of bottom water-locking fixed layer is filled with water-locking gel.

The invention provides a preparation method of a thermal protection coating on the surface of a copper / diamond composite material, and relates to the technical field of thermal protection coating materials.The preparation method comprises the steps that S1, the surface of the copper / diamond composite material is pretreated; s2, fixing the copper / diamond composite material, starting supersonic spraying equipment, and feeding powder to be sprayed after flame is uniform; s3, spraying the copper / diamond composite material in a reciprocating manner, and pausing after spraying for a certain pass; and S4, the step S3 is repeated until the coating with the required thickness is obtained on the surface of the copper / diamond composite material matrix. The method is short in process, simple in process and suitable for large-scale production, the service time of the copper / diamond composite material under the rocket tail flame ablation condition can be prolonged, and it is guaranteed that complete heat flow data can be rapidly obtained during heat flow monitoring.

The application discloses a kind of high-performance composite wave-absorbing materials and preparation method, application, it is related to composite wave-absorbing material technical field, the composite wave-absorbing material is dispersed in polydimethylsiloxane matrix by core-shell structure material formation, the core-shell structure material is magnetic particle as core, with wave-transparent nanoparticle-containing liquid metal as shell, the thickness of the liquid metal shell layer is accurately controlled by adding amount and chemical etching process, the chemical etching process is controlled layer by layer thinning to pre-formed thick shell layer, the composite surface with gradient impedance matching function is formed by the network of partially exposed silicon dioxide and residual liquid metal outside shell layer, the wave-absorbing performance of the composite wave-absorbing material obtained is excellent, and preparation method is convenient, easy to control, and application range is wider.

The invention relates to the technical field of film compounding, and discloses an OCA optical cement-based ETFE film and water oxygen barrier film compounding process, which comprises the following steps: S1, ETFE film pretreatment; s2, pretreating a water-oxygen barrier film; s3, preparation of OCA optical cement; s4, coating is conducted; s5, compounding; s6, staged curing is conducted; and S7, carrying out online detection. According to the ETFE film and water-oxygen barrier film compounding process based on the OCA optical cement, the composite surface of the ETFE film is treated through argon-oxygen mixed gas plasma, the chemical inertness of the surface of the ETFE film is broken, and the affinity of the ETFE film and the OCA optical cement is improved; meanwhile, the composite surface of the AlO-SiO composite barrier film is coated with the KH560 layer, the KH560 layer can serve as a connecting bridge between the AlO-SiO composite barrier film made of an inorganic material and the OCA optical cement made of an organic material, the interfacial compatibility of the AlO-SiO composite barrier film made of the inorganic material and the OCA optical cement made of the organic material is improved, and therefore the peel strength between film layers after compounding is improved, the decrease amplitude of the peel strength after ultraviolet aging can be reduced, and the service life of the AlO-SiO composite barrier film is prolonged. The long-term use reliability of the composite membrane is ensured.

The present application relates to the technical field of optical resin lens preparation, in particular to a kind of polyurethane lens based on carbon quantum dots and preparation method thereof.The present application uses 174 high refractive index sulfur-containing polyurethane as base material, constructs high refractive index carbon quantum dots by heavy atom doping, high conjugated fused ring and surface high refractive group grafting, adopts bulk doping composite surface coating process, realizes the small amplitude increase of 0.002~0.01 of lens refractive index on the basis of maintaining lens 1.74 high refractive index, and simultaneously gives full-waveband ultraviolet blocking, precise harmful blue light filtering, high-efficiency antibacterial and high wear resistance, solves the technical problems that traditional polyurethane lens is prone to yellowing, single function, poor wear resistance and antibacterial property, and refractive index is difficult to further improve.The refractive index of the lens prepared by the present application is stable at 1.74-1.75, the visible light transmittance is greater than or equal to 95%, the ultraviolet blocking rate is greater than or equal to 99%, the antibacterial rate is greater than or equal to 99.9%, the pencil hardness is more than 2H, there is no haze and no yellowing, and it is suitable for high-end myopia correction, medical eye protection, children wearing and other scenes, and the process can be mass-produced.

The invention discloses silicon carbide ceramic with a composite coating and a preparation method of the silicon carbide ceramic. The silicon carbide ceramic with the composite coating comprises a silicon carbide ceramic matrix and the composite coating, the composite coating is located on the surface of the silicon carbide ceramic matrix, and the composite coating comprises a boron carbide transition layer, a beta-SiC coating and a silicon carbide-silicon oxide composite surface layer which are sequentially arranged in the direction away from the silicon carbide ceramic matrix, the bonding strength of the composite coating and the silicon carbide ceramic matrix is larger than or equal to 60 N. Therefore, the bonding strength between the composite coating and the silicon carbide ceramic matrix is relatively high, and the composite coating is not easy to peel off from the matrix; the composite coating with the multi-layer structure can improve the oxidation resistance and corrosion resistance of the silicon carbide ceramic material, and can at least prevent impurities in the silicon carbide ceramic from overflowing under a high-temperature condition to a certain extent, so that the stability and reliability of the silicon carbide ceramic material are improved.

The application discloses a deep roadway dynamic and static load source cooperation integrated strong support method and system, belongs to the underground engineering roadway intelligent support technical field, and the method is as follows: capturing surrounding rock stress and energy events, establishing a correlation model, dividing the roadway space into a global static load bearing area and a dynamic impact key protection area; constructing an ultra-large tonnage prestressed anchor cable / rod, erecting a collapsible heavy U-shaped steel support and spraying a steel fiber concrete to form a composite surface protection structure, and then evaluating the cooperation performance; in the static load bearing structure, active energy absorption units are additionally arranged between main anchor rods / cables, and passive energy dissipation units are filled between the U-shaped steel support and the concrete spraying layer. The system is as follows: a load fine identification module is used for distinguishing two types of loads and dividing areas; a main strong support subsystem is used for implementing active and passive cooperative support; a key area buffer subsystem is used for strengthening the impact key area; and an intelligent monitoring feedback platform is used for dynamically evaluating the performance. The application can significantly improve the overall stability of the deep roadway.

The invention relates to the technical field of high polymer material recovery and regeneration processing, and particularly discloses a method for preparing a non-toxic transparent calendered film from a waste PVC film. The method sequentially comprises the steps of synergistic cleaning of a bio-enzyme-containing preparation, deep devolatilization purification under the synchronous action of ultraviolet rays, microwaves and superheated steam, composite surface treatment of a specific chelating agent and an organic tin compound, and blending modification with components such as a surface-modified nano reinforcing agent. And finally, a controllable mechanical oscillation field is introduced in the calendaring forming stage for on-line structure regulation and control, so that a final product is obtained. According to the method, efficient removal of harmful impurities in the waste PVC raw material and active optimization of a microstructure are achieved, the prepared calendered film has the comprehensive advantages of being low in heavy metal and plasticizer residues, high in light transmittance, small in haze and good in longitudinal tensile strength, and an effective solution is provided for high-valued regeneration of the waste PVC film.

This utility model discloses an air filter material composite device, comprising: a composite molding component including two sets of first elastic pressure-blocking modules and two rigid rollers, the circumferential surface of the rigid rollers being covered with an elastic buffer sleeve, and several spaced elastic pressure flaps being provided outside the elastic buffer sleeve; a filter material supply component including a surface unwinding roller, a sandwich unwinding roller, a bottom unwinding roller, and a surface guide roller, a sandwich guide roller, and a bottom guide roller all located on the same side of the rigid rollers, the bottom unwinding roller being located on the side of the bottom guide roller closer to the rigid rollers, the surface guide roller being located above the composite surface, and the bottom unwinding roller and the bottom guide roller being located below the composite surface, a surface adhesive brushing roller and a surface adhesive storage box being arranged sequentially below the surface guide roller, and a bottom adhesive brushing roller and a bottom adhesive storage box being arranged sequentially below the bottom guide roller. This utility model can achieve dynamic pressure balance, the composite effect is comprehensive and reliable, and it can effectively avoid adhesive dripping waste and device contamination.

The invention relates to the technical field of magnetic powder, in particular to microcrystalline and nanocrystalline neodymium iron boron anisotropic magnetic powder with high permanent magnet performance and a preparation method thereof. Preparing a preformed body; preparing an anisotropic magnet; the anisotropic magnet is subjected to heat preservation under Ar protection, and internal stress is eliminated through low-temperature aging treatment; and crushing and surface treatment: treating the optimized anisotropic magnet in an H2 atmosphere, then vacuumizing, continuously treating and cooling, crushing, mixing an anisotropic magnetic powder crude product and low-oxygen Zn particles, putting the mixture into a vacuum rotary furnace, and evaporating a Zn thin layer on the surface of the anisotropic magnetic powder crude product to prepare the microcrystalline and nanocrystalline neodymium iron boron anisotropic magnetic powder with high permanent magnetic performance. According to the invention, through composite doping, auxiliary cooling of the alloy back roller surface, and replacement of mechanical crushing, composite surface treatment and whole-course low-oxygen control with a hydrogen demolishing technology, the performance of the magnetic powder is significantly improved while the cost is reduced.

The invention relates to a corrosion-resistant nickel material for new energy and a preparation method of the corrosion-resistant nickel material, and belongs to the technical field of nickel-based corrosion-resistant alloys. The nickel material comprises a nickel strip base body and a composite surface layer, and the composite surface layer is composed of a nickel-based alloy transition layer and a composite oxide passivation layer from inside to outside, wherein the nickel-based alloy transition layer is metallurgically bonded with the base body, the chromium content and the molybdenum content of the nickel-based alloy transition layer are increased in a gradient mode, and the composite oxide passivation layer is rich in chromium and molybdenum and formed by in-situ anodic oxidation of the transition layer. The preparation method comprises the following steps: preparing the transition layer on the surface of the nickel strip substrate by adopting a pulse electrochemical codeposition method, then carrying out thermal diffusion treatment, and finally carrying out potential anodic oxidation in an alkaline solution to generate the passivation layer in situ. Through component and structure gradient design, in combination with an in-situ conversion process, the nickel material has excellent corrosion resistance, high conductivity and good interface stability in a severe environment of a new energy battery, and the service life of the battery is effectively prolonged.

The utility model discloses a moisture-absorbing skin-friendly comfortable cotton-hemp-polyester knitted fabric which comprises a fabric body, the fabric body comprises a pure hemp antibacterial layer, a multi-hemp outer layer, a polyester stiff and smooth layer, a composite surface layer on the other side of the multi-hemp outer layer and a composite inner layer on the other side of the polyester stiff and smooth layer, the multi-hemp outer layer and the polyester stiff and smooth layer are arranged on the two sides of the pure hemp antibacterial layer; the composite surface layer and the composite inner layer are formed by blending cotton and hemp yarns and then blending the cotton and hemp yarns with polyester; the multi-hemp secondary outer layer is formed by blending hemp and polyester; the pure hemp antibacterial layer is made of hemp fibers loaded with antibacterial materials, and the polyester stiff and smooth layer is made of polyester. According to the utility model, the moisture-absorbing, antibacterial, comfortable and skin-friendly fabric is developed, the final fabric has the advantages of China-hemp, cotton and polyester, the obtained fiber fabric is moderate in hardness, smooth without wrinkles, good in light sensation, skin-friendly and breathable, and the natural organic material China-hemp is promoted to be widely used in textile products.

The application discloses a production process of silica micro powder for rubber prepared from rice husk ash, and belongs to the technical field of rice husk ash resource utilization. Firstly, the production process comprises the following steps: the rice husk ash is pretreated by hydrochloric acid and cassava starch, then is treated by a purified solution, calcined, treated by a DBD reactor, mixed with an ethanol solution and the like, ultrasonically dispersed, centrifuged, dried and sieved, and room temperature drying is carried out to obtain the silica micro powder for rubber. The application successfully solves the problems of low purity, poor dispersibility and high energy consumption of the silica micro powder in the prior art through multi-step innovations such as acid immersion-template agent cooperation, microwave-complexation purification, plasma activation and composite surface modification. The test data of the embodiments show that the silica micro powder of the application is significantly better than the comparative examples and the prior art in reinforcing property, dispersibility, wear resistance and aging resistance, and has environmental protection and economy, and has a wide industrial application prospect.