145 results about "Capillary action" patented technology

The invention provides a 1500-DEG C thermal shock and oxidation resistant plasma spraying method for a Si coating on the surface of graphite, coating graphite and application. The method comprises the following steps that the to-be-sprayed surface of a graphite matrix is pretreated; spraying the to-be-sprayed surface by adopting a plasma spraying technology to obtain a Si coating on the to-be-sprayed surface; carrying out heat treatment on the graphite matrix with the Si coating in a vacuum environment by adopting a vacuum heat treatment technology, so that part of solid silicon in the Si coating is molten into liquid silicon or silicon steam, and the liquid silicon or silicon steam permeates into the graphite matrix containing air holes under the action of capillary tubes, so that part of liquid silicon or silicon steam and the graphite matrix are subjected to chemical reaction; and thus, the gradient transition Si / SiC coating is obtained through in-situ growth on the to-be-sprayed surface of the graphite matrix. According to the method provided by the invention, the problem that a traditional method for spraying the Si coating on the surface of the graphite in a plasma manner cannot be used in an environment of 1500 DEG C is solved.

The application belongs to the field of scintillator material preparation, and particularly relates to a manganese-based pixelated scintillator array and a preparation method and application thereof. The (BuTPP)2MnBr4 scintillator material in a molten state is filled into a quartz glass cavity by capillary action, and a glass scintillator matrix is formed by cooling and quenching; then, in-situ crystallization is realized in the glass scintillator by using femtosecond laser direct writing processing, and a pixelated array is precisely constructed. The in-situ crystallization induced by the femtosecond laser significantly improves the photoluminescence intensity and the radiation luminescence intensity of the material, effectively solves the problems of low luminescence efficiency, high pixelation processing difficulty and poor crystallization controllability of the traditional glass scintillator, and the prepared pixelated scintillator array has stable optical performance and clear pixel boundary, is suitable for X-ray imaging, radiation detection and the like, and has simple preparation process and strong controllability of parameters, thereby providing a new implementation method for the preparation of arrayed X-ray scintillators.

The invention relates to the technical field of air blowers, and discloses an automatic cleaning centrifugal air blower which comprises a centrifugal air blower body, an air inlet and an air outlet are formed in the centrifugal air blower body, a filtering device is arranged at the air inlet in a communicating mode, and a rotating ring is rotationally installed in the air inlet; the interior of the rotating ring is fixedly connected with a rotating disc through a plurality of connecting frames, and the rotating disc and the rotating ring are both hollow. A dynamic filtering system is constructed by adopting multiple layers of dust filtering belts made of hydrophilic fiber materials, a continuous water film is formed by utilizing a capillarity phenomenon, the contact probability is increased by combining flexible antennas, small-particle dust in airflow is efficiently captured through surface tension, adhesive force and an inertial collision effect, the filtering precision is remarkably improved, and the dust removal efficiency is improved. The rotating disc and the rotating ring drive the dust filtering belt to revolve through impeller power and a speed reducer, the driving roller is driven to rotate through gear ring gear transmission to form a dynamic cleaning path, and continuous dust removal is achieved in cooperation with scraper stripping and centrifugal drainage.

The utility model relates to a liquid guiding mechanism and a fragrance diffusion device using the same, the mechanism comprises an adsorptive liquid guiding strip and a supporting structure, one end of the liquid guiding strip extends below a liquid level to be guided, the supporting structure can place the other end of the liquid guiding strip above the liquid level, the supporting structure can hang the liquid guiding strip, and the other end of the liquid guiding strip droops below the liquid level to be guided. The end, matched with the supporting structure, of the liquid guiding strip is provided with a solid matter with the liquid adsorption capacity, the liquid guiding strip is hung in the mode that the solid matter is matched with the supporting structure, the solid matter is tightly embedded into one end of the liquid guiding strip, and liquid to be guided infiltrates the solid matter through the liquid guiding strip through the capillarity phenomenon. Long-time use of the device is kept, external dust and impurities are prevented from polluting aromatherapy liquid, and meanwhile, the device is suitable for use requirements of different conditions.

The utility model relates to liquid viscosity detection technical field especially relates to a kinematic viscosity testing device, including sample cell subassembly and detection subassembly. Sample cell subassembly includes two detection inner boards, two detection inner boards articulate to have open state and closed state, under the closed state, two detection inner boards surround and form the capillary space along the vertical direction extension, and the liquid is in the capillary space and is in accord with capillary phenomenon when going down. Detection subassembly has the accommodation groove, and sample cell subassembly can insert or separate from the accommodation groove, and detection subassembly can detect the time difference of the liquid in the capillary space of sample cell subassembly in the accommodation groove when passing through different positions, and because the liquid is in accord with capillary phenomenon when going down, the distance between different positions and the time difference of the liquid passing through different positions can be measured to calculate the kinematic viscosity of the liquid. The kinematic viscosity testing device is simple to operate and can be carried. It is easy to clean after detection, and multiple detections can also ensure high operation efficiency.

The invention relates to the technical field of medical equipment, and provides a paper-adhesive tape biosensor and a preparation device thereof.The paper-adhesive tape biosensor comprises a detection module and a first adhesive tape carrier, and the detection module comprises a paper-based carrier and a detection electrode arranged on the paper-based carrier; through the hydrophilic characteristic of the material of the paper-based carrier and the hydrophobic characteristic of the material of the first adhesive tape carrier, the part of the paper-based carrier is exposed through the first hollow pattern of the first adhesive tape carrier, the exposed part of the paper-based carrier is a hydrophilic area, and the non-exposed part of the paper-based carrier is a hydrophobic area; the mode of forming the first hollowed-out pattern on the first adhesive tape carrier only adopts a physical cutting mode, and compared with the mode that a wax spraying printer sprays wax on a paper-based carrier first and then heats the paper-based carrier, the method provided by the invention is not influenced by a paper capillarity phenomenon, so that the pattern of the finally formed hydrophilic area is higher in precision, and the higher manufacturing precision requirement can be met.

This utility model discloses a lubrication structure for a punch press slide guide, relating to the field of punch presses. The key technical points are: it includes a machine body, within which a slide block and two guide rails are installed. Oil injection holes are opened on opposite sides of the two guide rails. Oil guide grooves and transverse grooves are also opened on the inner walls of the guide rails. A return oil groove is also opened between adjacent oil guide grooves. Oil guide ropes are installed in both the return oil groove and the transverse groove. After lubricating oil is injected into the oil injection hole, it flows downwards along the oil guide groove. When the lubricating oil reaches the transverse groove, it is absorbed by the oil guide rope within the transverse groove, preventing it from flowing beyond the transverse groove to the next oil injection hole. Furthermore, under the capillary action of the fibers, the lubricating oil in the guide rope flows along the return oil groove. This design ensures that the lubricating oil injected into each oil injection hole does not easily flow to other oil injection hole areas, guaranteeing uniform lubrication.

The invention relates to reverse UV paper and a preparation method thereof. The preparation method comprises the following steps: pulping, preparing pulp, dehydrating and forming a net part, squeezing by a squeezing part, drying by a front drying part, sizing, drying by a rear drying part, calendering by a calender, coiling, packaging and warehousing. Wherein in the sizing step, gelatinized starch with the solid content of 10-12% is adopted as a sizing material, the viscosity of the sizing material is 10-20 cps, the sizing temperature is 70-78 DEG C, and the sizing amount is 3.5 g / m < 2 >-4.5 g / m < 2 >. Different from the prior art, according to the technical scheme, in the sizing step, a large amount of sizing agent adheres to the paper surface by increasing the sizing temperature and reducing the viscosity and the solid content, so that the capillary action of the paper surface is reduced, short-chain starch in the sizing agent is linked with fibers, the fibers are endowed with hydrophobic groups, the hydrophobicity of the paper surface is increased, and the paper surface hydrophobicity is improved. And the UV ink forms a floating layer on the paper surface and is rapidly cured, so that the effect of embossment three-dimensional texture is achieved.

The invention relates to a pressure-sensitive electrode, a pressure-sensitive resistor assembly and a surge protection device, and belongs to the technical field of pressure-sensitive resistors. The surge protection device comprises a piezoresistor assembly, the piezoresistor assembly comprises a voltage-sensitive electrode, the voltage-sensitive electrode comprises an electrode body and a welding boss, the welding boss is arranged on the connecting side of the electrode body, the connecting side of the electrode body is provided with a first blocking groove, and the first blocking groove blocks the periphery of the welding boss in partial or all directions. According to the pressure-sensitive electrode, the pressure-sensitive resistor assembly and the surge protection device provided by the invention, the connecting side of the electrode body is attached to the gasket, the invasion interval is formed between the connecting side of the electrode body and the gasket, and in the invasion interval, the direction from the welding boss to the edge of the electrode body is the invasion direction; the first blocking groove can block a capillary phenomenon water absorption path of liquid water in the invasion direction. Through the arrangement, moisture can be effectively prevented from flowing to the edge of the ceramic of the piezoresistor along the surface of the electrode body, and the piezoresistor is prevented from being affected with damp and being short-circuited and invalid.

The utility model relates to the technical field of forest grass cultivation devices, in particular to a forest grass cultivation water storage device with a soil filtering function, which comprises a water storage component, the water storage component comprises a plurality of water storage plates, the water storage plates are used for storing water, supporting components are arranged in the water storage plates, filtering components are arranged on the top surfaces of the supporting components, and planting layers are arranged on the top surfaces of the filtering components. According to the utility model, the supporting assembly is used for supporting the filtering assembly, and meanwhile, a multi-layer filtering structure is arranged above the filtering cloth, so that the filtering cloth is prevented from being damaged due to the influence of weight or plant root systems while silt is filtered; the supporting assembly can increase the height of the filtering assembly, so that the water storage capacity of the water storage disc is increased; by arranging the drainage strips and utilizing the capillary action, water is supplemented to the planting layer from the lower portion, surface evaporation is reduced, and the water utilization rate is increased; the water storage disc and the supporting frame are designed in a splicing mode, and the coverage area can be flexibly adjusted according to needs.

This invention provides a method and related equipment for testing the wetting strength of tin-plated board surfaces. The method includes: acquiring a tin-plated board to be tested; drawing lines on the tin-plated board using a dyne pen to obtain the drawn lines; determining the changes in the drawn lines; for cases where capillary action occurs in the drawn lines, drawing lines again on the tin-plated board using a higher-grade dyne pen to obtain new drawn lines, until the new drawn lines show no change; and determining the grade of the dyne pen corresponding to the new drawn lines as the wetting strength of the tin-plated board surface. Thus, a quantifiable wettability index is provided. By testing the surface of the tin-plated board with a dyne pen, considering the surface morphology of the substrate, the relationship between the passivation film and the coating, and observing the pen marks, an evaluable method for testing the wetting strength of tin-plated board surfaces is established.

This article is composed of a fiber aggregate or a porous resin body and applies liquid by utilizing capillary action. This article can be attached to the tip of a cosmetic container containing cosmetics and used as a cosmetic applicator for applying cosmetics to the lips, around the eyes, or other areas of the face, such as a lipstick, lip liner, eyebrow pencil, or eyeliner. This article can also be used as a cosmetic applicator attached to the tip of the handle held by the user, impregnated with separately prepared cosmetics and applied to the face. This article can also be used not only as a cosmetic applicator, but also as an applicator for writing or art supplies.

This invention discloses a method for controllable preparation of nanoparticles using a multi-channel microreactor. The method utilizes a microchannel reactor to segment droplets and prepare quantitatively synthesized nanoparticles with controllable particle size. The invention employs capillary action to draw the reaction solution into the microchannel, segmenting one or more droplets (each droplet into 10-100 portions). By changing the width of the microchannel, controllable preparation of nanoparticles within a small range (±3 nm) can be achieved; by changing the length of the microchannel, controllable preparation of nanoparticles within a large range (±10-30 nm) can be achieved. Furthermore, the reactor structure of this invention is simple, enabling highly precise and quantitative synthesis of various nanoparticles. Compared to large-scale reactors, the miniaturization of the synthesis reaction in this invention effectively reduces energy waste and safety hazards, making it highly valuable for applications in safe chemical engineering, green chemical engineering, high-efficiency chemical engineering, microchemical engineering, and precise reaction monitoring.

The invention provides a packaging device and a packaging method, the packaging device comprises a first substrate, a second substrate, a bonding structure and a pixel structure, the first substrate is provided with a first bonding area, and the first bonding area is provided with micron-scale or nano-scale grooves or protrusions arranged in an array; a second bonding area corresponding to the first bonding area is arranged on the second substrate; the bonding structure is located in the first bonding area and the second bonding area and at least partially covers the micron-scale or nano-scale grooves or protrusions, and the pixel structure is located on the first substrate or the second substrate; the first substrate and the second substrate are bonded together through a bonding structure, and the pixel structure is packaged on the inner side of the first bonding area and the inner side of the second bonding area. By utilizing the capillary adsorption effect of the gaps between the micron-scale or nano-scale grooves or the micron-scale or nano-scale bulges, part of redundant solder is adsorbed, the overflow of the solder is remarkably inhibited, and the packaging yield is improved.

Proposed is a microplastic detection sensor for detecting information about microplastic contained in a sample. The sensor may include a fluidic channel substrate including an inlet and an outlet, and a plurality of RF resonance structures. The inlet may be formed on one end of the fluidic channel substrate, and the outlet may be formed on the other end. The fluidic channel substrate may have a microfluidic channel formed therein to connect the inlet and the outlet. The microfluidic channel may move the sample toward the outlet by capillary action. In the fluidic channel substrate, a plurality of capture parts, respectively corresponding to the RF resonance structures, may be formed along the microfluidic channel and may selectively capture the microplastic by particle size. The RF resonance structures may output information about the microplastic captured in the corresponding capture part through RF resonance for the applied RF signal.

The present application relates to the field of composite ceramics, and aims to provide a new B4C-cBN composite ceramic with good mechanical properties and thermal conductivity, and a preparation method thereof, which comprises the following steps: S100, mixing boron carbide 5-9 parts, cubic boron nitride 1-5 parts and sintering additives to obtain a mixture; S200, obtaining the B4C-cBN composite ceramic through a sintering process; the sintering temperature is 1400-1550 DEG C; the sintering pressure is 4.9-5.5 GPa; and the sintering time is 1-3 h. The reason why aluminum and cobalt are selected as sintering additives is that the melting point of aluminum is low, and a liquid phase formed in the sintering process can effectively fill the pores through capillary action, thereby promoting the sintering process. Aluminum reacts with cubic boron nitride to form aluminum nitride, which can inhibit the conversion of cubic boron nitride into hexagonal boron nitride. Cobalt has oxygen affinity and can play a purifying role of "deoxidation and degassing", thereby reducing pores, improving density and improving the sintering performance of the composite ceramic. The optimal raw material ratio and sintering parameters are determined, so that the mechanical properties and thermal conductivity of the composite ceramic are both excellent.

The utility model discloses an integral type electric core shell film -coated waterproof device, electric core and battery module, including the film -coated that covers electric core shell outside, and the film -coated includes the waterproof sealing layer, heat shrinkage film and wear -resistant coating that set gradually along the electric core thickness direction, and the waterproof sealing layer contacts electric core shell, the utility model discloses an integral type film -coated is carried out to electric core shell through adopting heat shrinkage material, has the following advantages: completely eliminate capillary phenomenon: adopt integral type film -coated no seam and pore, can effectively prevent moisture and penetrate electric core shell through capillary phenomenon, simple process: heat shrinkage material film can through heating fast contraction and stick electric core shell, and process simple and good consistency is suitable for large -scale production, multifunctionality: can add waterproof sealant and wear -resistant coating optionally, further promote the security and durability of battery.

The fresh air module comprises a supporting part, a fresh air opening is formed in the supporting part, and a fresh air fan is arranged at the fresh air opening; the humidifying assembly is arranged on the supporting part, and the humidifying assembly comprises a sealing section, a humidifying section and a water absorbing section which are connected in sequence; the driving mechanism is connected with the humidifying assembly and used for driving the humidifying assembly to move so that the sealing section or the humidifying section can cover the fresh air opening. The integrated humidification assembly comprising the sealing section, the humidification section and the water absorption section is arranged in the air conditioner, and the driving mechanism is used for controlling the position of the integrated humidification assembly relative to the fresh air opening, so that the fresh air module can be flexibly switched into three working modes of fresh air closing, pure fresh air or fresh air humidification. In the fresh air humidification mode, the water absorption section can obtain condensate water naturally generated in the refrigeration process from the water pan by means of the capillary action and continuously supply the condensate water to the humidification section, and therefore fresh air entering a room is effectively humidified when passing through the humidification section.

The present invention relates to the technical field of phase change composite materials, and specifically to a high-strength and high-thermal-conductivity composite phase change fiber, a preparation method, and an application thereof. Using carbon nanotube fibers as a substrate, hydrothermal method and freeze casting technology are adopted to rapidly solidify water molecules distributed in the pores of the carbon nanotube fibers or between the carbon nanotubes to form an ordered ice crystal structure, thereby forming a multi-layer ordered pore structure in the carbon nanotube fibers. The carbon nanotube fibers with a porous ordered structure are then immersed in a phase change material solution. Under evaporation concentration and capillary action, the phase change material fully penetrates into the multi-layer ordered pore structure of the carbon nanotube fibers, and is washed in a hot water bath to obtain a composite phase change fiber having high tensile strength, high thermal conductivity, low density, a wide adjustable range of phase change temperature, and high phase change enthalpy or latent heat. It has very broad application prospects in the fields of thermal interface materials, energy storage materials, and high-temperature protective materials.

The invention discloses a preparation process of a hydrophilic graphite material, which comprises the following steps of: without changing a graphite production process flow, diffusing lipophilic titanium dioxide into asphalt serving as a binder or a filler, dipping into a semi-finished product of the production process, and graphitizing at a high temperature, so that titanium dioxide particles are distributed and embedded in micropores of graphite to form a stable hydrophilic channel; the capillary action is realized, so that the hydrophilic property is realized. The modified graphite material can be applied to fuel cells in the electrochemical field, hydrogen production by electrolysis of water, chemical cells and filtration, purification, catalysis and the like in the chemical field, and has the advantages that the material properties and the production process of the graphite raw material, titanium dioxide and asphalt are fully utilized, the structural strength and the material characteristics of graphite are not influenced, the process is easy to implement, and the cost is low. Compared with other surface hydrophilic treatment methods, the modified graphite has the advantages of stable effect, low treatment cost, long service life and the like, the modified graphite forms a water-permeable and gas-barrier functional material, and the application range of the modified graphite is widened.

This invention belongs to the field of electrochemical deoxygenation technology, specifically relating to an electrochemical oxygen atmosphere control system and method. The system, from bottom to top, includes a porous bottom cover, a first hydrophobic and breathable membrane, an oxygen-consuming cathode, a liquid-conducting diaphragm, an oxygen-evolving anode, a second hydrophobic and breathable membrane, and a porous top cover. Each component layer forms a zero-gap contact through the clamping force of the outer shell, enabling the device to achieve an ultra-thin thickness. The liquid-conducting diaphragm has a transverse liquid-conducting groove extending to the external electrolyte chamber, utilizing capillary action to achieve rapid electrolyte replenishment and eliminate local hot spots. Through the coupling design between the hydrophobic and breathable membrane and the electrode interface, oxygen generated by the oxygen-evolving anode directly penetrates and overflows in the form of gas molecules, effectively suppressing bubble formation and accumulation in traditional electrolysis processes, and significantly reducing the ohmic resistance of the interface and operating energy consumption. This invention features an extremely thin structure, high reaction efficiency, and no bubble interference, making it suitable for precise oxygen concentration control in spaces such as refrigerators and precision storage environments.

This invention provides an ordered ladder-porous carbon electrode and its preparation method. The electrode preparation method includes: (1) synthesis of a carbonization precursor solution; (2) spin-coating a single layer of polystyrene microspheres onto a silica substrate; (3) filling the gaps between the microspheres with the precursor solution using sputtering or immersion methods; (4) carbonizing the template and precursor combination in a muffle furnace at high temperature and removing the template; (5) repeating steps (2)-(4) layer by layer using microspheres of different sizes to create pores, thereby obtaining an ordered ladder-porous microporous layer (MPL); (6) transferring the prepared ordered ladder-porous microporous layer from the silica substrate to a gas diffusion layer (GDL) and hot-pressing it with other components into a single cell. This invention forms ordered ladder-porous macropores and randomly distributed micropores inside the electrode, and gas-liquid separation channels are formed inside the electrode under capillary action, effectively improving the material transport efficiency inside the electrode. Meanwhile, the present invention can also regulate the balance of liquid water inside the electrode through ordered stepped macropores, which can retain liquid water under low pressure conditions to meet the hydration function of the proton exchange membrane and effectively remove excess liquid water under high pressure conditions to prevent water flooding inside the battery, thus effectively improving the electrochemical performance of the battery.

The utility model relates to a rust-proof gear with an oil outlet device, which comprises two half gear modules, two oil storage modules, an oil absorption lubricating component and a fastener, and the two half gear modules are symmetrically connected and fixed into a complete gear through the fastener. The two oil storage modules are symmetrically arranged in an inner cavity between the two half gear modules, an inner cavity for containing lubricating oil is formed between the two oil storage modules, and the oil absorption lubricating assembly is arranged in the inner cavity between the two oil storage modules. The oil absorption lubricating assembly is provided with a plurality of branches which penetrate out of the two oil storage modules, extend to the tooth bottom of the gear and guide out lubricating oil through the capillary action. Through cooperative arrangement of the half gear module, the oil storage module and the oil absorption lubricating assembly, an oil storage cavity can be formed in the gear to be used for containing lubricating oil, and the lubricating oil can be continuously and stably guided out to the tooth bottom of the gear to be lubricated through the capillary action by immersing the oil absorption lubricating assembly into the lubricating oil.

An anti-siphon and anti-capillary immersion liquid-cooled network cable and a preparation process therefor. The anti-siphon and anti-capillary immersion liquid-cooled network cable comprises a cable main body. Sealed waterproof assemblies are positioned at both ends of the cable main body. Cable connectors are positioned on the outer sides of the sealed waterproof assemblies. A sealing ring body and a sealing disc are positioned between each sealed waterproof assembly and the corresponding cable connector. A spiral connector is integrally formed on the outer wall of each cable connector. A sealed connection port is formed inside each cable connector, and a sealing ring is positioned at an end portion of each cable connector. Anti-capillary assemblies are positioned at both ends of the cable main body and located inside the sealed waterproof assemblies. By means of the optimization of the design of the immersion liquid-cooled network cable, the anti-siphon-phenomenon performance and the anti-capillary-phenomenon performance of the network cable are improved.

The present invention provides a method for vacuum pressure sintering porous aluminum powder on an aluminum-based silicon carbide matrix, comprising the following steps: mechanically polishing the surface of an aluminum-based composite material reinforced with silicon carbide particles to be sintered to obtain an aluminum-based silicon carbide matrix; immersing the aluminum-based silicon carbide matrix in acetone for cleaning to remove grease from the surface of the aluminum-based silicon carbide matrix; placing the cleaned aluminum-based silicon carbide matrix in an ultrasonic cleaning machine for ultrasonic cleaning; pouring aluminum powder into a graphite mold and scraping it flat to ensure close contact between the aluminum powder and the aluminum-based silicon carbide matrix; placing the sintered assembly in a vacuum pressure sintering machine for pressure sintering, wherein under the action of high temperature and pressure, the contact surfaces approach each other, and after a certain holding time, the aluminum powder atoms gradually diffuse into the aluminum-based silicon carbide to form a reliable connection. The present invention successfully sintered porous aluminum powder on the aluminum-based silicon carbide matrix under appropriate sintering temperature and applied pressure, with good capillary action.

The invention relates to a control valve which comprises a shell, a lining and a connecting base, at least part of the connecting base is located in a cavity of the shell, the shell comprises a side hole, the lining comprises a first connecting part, and the first connecting part is arranged around the side hole; the control valve further comprises a welding flux melting area, the welding flux melting area comprises a first melting area and a second melting area, the shell further comprises a notch, in the radial direction of the shell, an opening in one side of the notch faces the second melting area, and an opening in the other side of the notch faces the first melting area. According to the control valve, the notch is formed in the shell of the control valve, the opening in one side of the notch is located in the second melting area, and the opening in the other side of the notch is located in the first melting area, so that obstruction among a plurality of welding seams is broken through, welding flux can flow towards the lining through the notch under the capillary action and the gravity action, and the welding efficiency of the shell and the lining is effectively improved; in addition, the invention further provides a manufacturing method of the control valve.

The application discloses a preparation method of nano-graphene lubricating oil and relates to the technical field of lubricating oil. The modified zirconium-titanium composite particles are used as a catalyst to synthesize base oil, so that the heat resistance effect is improved; then, under the assistance of microwaves, graphene is stripped to improve the dispersibility of the graphene in the lubricating oil, and a hydrogen bond network is formed on the surface of the modified zirconium-titanium particles, so that the fatigue wear is reduced, and the service life is prolonged; on the basis, electrochemical deposition is generated between the particles and the graphene in the friction process, so that the self-repairing effect is achieved. The modified zirconium-titanium composite particles are first injected into pre-cooled liquid nitrogen copper molds by precursor sol, are rapidly frozen, are dried by vacuum sublimation to remove ice crystals, and form snowflake-like hierarchical porous structures, so that the lubricating effect is improved; then, low-temperature annealing is performed to form Zr-O-Ti mixed oxide skeletons, so that the pore collapse is effectively inhibited, and the service life is prolonged; and then, through the surface hydroxyl groups and capillary action, ionic liquids are adsorbed to form a coating layer, so that the lubricating effect is enhanced.

The invention belongs to the field of inorganic filler preparation, and particularly relates to a preparation method of full-hollow silicon carbide microbeads, which comprises the following steps: sol preparation: mixing and stirring 20-40% by mass of nano carbon black, 1-5% by mass of a modifier and 30-90% by mass of silica sol to obtain sol; the sol obtained in the step S1 is dried in a spray dryer, the specific surface area and surface functional groups of the nano carbon black are optimized, and a carbon enrichment layer formed by phenolic resin coating carbonization is combined, so that the contact area and reaction active sites of the carbon black and silicon are greatly increased; meanwhile, the proportion of the high-purity spherical silicon powder and the carbonized microbeads and the addition of the dispersing agent avoid the agglomeration of the silicon powder, so that the liquid-phase silicon is rapidly impregnated and reacts with carbon under the capillary action during sintering. The silicon-carbon reaction rate is increased, and the high-temperature sintering energy consumption of a unit product is reduced.

This invention provides a method for steel / aluminum butt brazing joints based on grid control, belonging to the field of dissimilar material welding. The method includes: spot welding a steel grid to the back of the area to be welded on a steel plate; applying flux and then clamping the aluminum alloy plate butt-welded to the steel plate; performing brazing using a laser-MIG composite heat source; feeding welding wire into the molten pool and adding an additional cold wire. During welding, the back grid partially dissolves to provide Fe element and utilizes capillary action to promote the spread of molten aluminum to the back side. The cold wire absorbs heat to compensate for the metal on the front side. Together, these two elements create a uniform intermetallic compound layer on the front, sides, and back of the joint, achieving a large back weld width and a full front weld height. Using this method, the joint's positive and negative bending angles both reach 180° without failure, significantly improving the bending performance of the steel / aluminum butt brazing joint.

This utility model discloses a maintenance-free, leak-proof bearing for humanoid and industrial robots. This bearing innovatively uses a microporous plastic oil as the lubricating medium, achieving dynamic release and recovery of the lubricating oil through microporous capillary action. During operation, a lubricating film is formed, and when stationary, the oil is returned to its storage compartment, effectively solving the problems of leakage, pollution, and frequent maintenance associated with traditional liquid lubricants. This technology possesses self-lubricating and zero-pollution characteristics, significantly reducing maintenance costs and extending bearing life, while improving the operational reliability and environmental adaptability of robot systems.