453 results about "Porous layer" patented technology

The invention relates to a phase change sweating cooling porous structure and application thereof in an aircraft reentry capsule, the porous structure comprises a porous layer comprising a plurality of densely arranged porous units; the liquid separation cavity is connected with the porous layer; the liquid storage cavity is used for storing a cooling agent; the coolant conveying pipeline is connected with the liquid storage cavity and the liquid separation cavity; the regulating valve is arranged on the coolant conveying pipeline; each porous unit comprises a small-porosity porous part as well as a large-porosity porous part and a liquid channel which are respectively connected with the small-porosity porous part, and a gas channel is formed between the small-porosity porous part and the large-porosity porous part; and a coolant is introduced from the liquid channel, permeates into the small-porosity porous part, escapes from the large-porosity porous part along the gas channel after being gasified, and forms a gas film for heat insulation. Compared with the prior art, rapid gas-liquid separation and partitioned flow regulation and control of the coolant in the sweating cooling porous layer can be effectively achieved, and the phase change sweating cooling efficiency and reliability are effectively improved.

The invention discloses a circuit board etching device and method, and the method comprises the steps: S1, providing a substrate, forming a laser activation micro-channel on the surface of the substrate, carrying out the plasma cleaning of the substrate, and pressing a gradient copper foil layer; s2, based on the thickness distribution data of the gradient copper foil layer, establishing an etching parameter prediction model, and generating a pressure-temperature dynamic regulation and control curve; s3, preparing a first-stage etching solution, carrying out spraying treatment, and etching the surface layer of the gradient copper foil layer under the assistance of ultrasonic waves to form a porous layer; s4, switching to a second-stage etching solution to directionally etch the porous layer of the gradient copper foil layer to a target residual thickness; s5, performing surface leveling treatment on the etched circuit board, and verifying the etching precision based on a high-frequency impedance test result; gradient copper layer dynamic parameter regulation and control are combined with a two-stage etching process, high-frequency impedance verification and surface leveling have a synergistic effect, signal transmission loss can be reduced, and the method is suitable for manufacturing high-frequency and high-speed circuit boards.

A capacitor element 1 comprises a positive electrode plate 10 that has a porous layer 12 on at least one main surface, a dielectric layer 20 that is provided on the surface of the porous layer 12, a negative electrode layer 30 that is provided on the surface of the dielectric layer 20, and an insulation layer 40 that is provided on the surface of the dielectric layer 20 so as to partially overlap the negative electrode layer 30, the relationship d1≥0.2×d2 being satisfied, where d1 is the layer thickness of a portion 34 of the insulation layer 40 where the negative electrode layer 30 and the insulation layer 40 overlap at an end 40a that overlaps the negative electrode layer 30, and d2 is the layer thickness of the insulation layer.

The invention relates to the technical field of solid waste resource utilization, in particular to a high-strength light solid waste-based multi-shell concrete functional aggregate and a preparation method thereof. The concrete functional aggregate has a three-layer spherical structure, and an internal core layer is a porous layer, provides partial strength and keeps low density; the middle layer is a strength layer and is responsible for cooperating with the core layer to provide higher strength; and the outer shell layer is a functional layer and mainly realizes slow release, temperature regulation and other properties of the aggregate. According to the invention, a traditional sintering process is abandoned, comprehensive utilization of solid wastes such as fly ash, gypsum, slag and the like is realized, and the technical problems of high density, low strength, high water absorption rate and poor interface adhesion performance with other materials of the existing sintering-free artificial aggregate can be effectively solved.

To provide an electrode-embedding member and a manufacturing method thereof, which can suppress the intrusion of oxygen between a connecting member and a ceramic sintered body, suppress deterioration of the connecting member, and extend the product life compared to conventional products.SOLUTION: An electrode-embedded member 100 includes a base 110 formed in a flat plate shape from a ceramic sintered body whose main component is AlN, an electrode 120 embedded in the base 110, and a connection member 130 made of W or Mo and electrically connected to the electrode 120 and embedded in the base 110, and a porous layer 132 made of W or Mo is formed at the interface between the connection member 130 and the ceramic sintered body.SELECTED DRAWING: Figure 1

The invention discloses a gradient pressing and pore interlocking titanium-aluminum composite profile preparation method which comprises the following steps: S1, density differential pressing of titanium powder, unequal-thickness powder filling is carried out in a cavity, and a gradient density titanium material layer is formed through pressing; s2, primary sintering is conducted, specifically, the titanium material layer with the gradient density in the step S1 is sintered; s3, aluminum powder is pressed, specifically, aluminum alloy powder is added into the mold for secondary pressing compounding to form an aluminum material layer, and the aluminum powder permeates to the surface of the loose layer; and S4, secondary sintering permeation enhancement is carried out, vacuum sintering and pressure sintering are carried out, the aluminum material layer is in a semi-molten state in the sintering process, and on the basis of the capillary action principle, the aluminum material permeates and fills pores in the loose layer to form pore interlocking. The gradient structure with the compact outer side and the porous inner side is formed on the titanium layer through an unequal-thickness mold and step-by-step pressing, directional pores preset in the porous layer provide channels for aluminum permeation, and the permeation depth reaches 150 microns and is increased by three times compared with a conventional process.

The invention belongs to the field of new material membrane separation, and relates to a COF / MXene composite membrane and a preparation method and application thereof, the preparation method comprises the following steps: (1) preparing a Ti3C2Tx nanosheet dispersion liquid to obtain an MXene solution; (2) preparing a TpPa-SO3H nanosheet solution, so as to obtain a COF solution; and (3) depositing the TpPa-SO3H nanosheet solution on the nylon porous substrate film through vacuum-assisted self-assembly to form an intermediate porous COF layer, and then depositing the Ti3C2Tx nanosheet dispersion liquid on the COF layer to prepare the COF / MXene composite film. The preparation method disclosed by the invention is simple to operate and high in repeatability, and the obtained composite membrane has excellent separation performance and can efficiently separate organic pollutants such as dye in water.

The invention discloses stable zirconia high-toughness ceramic and a preparation method thereof.The stable zirconia high-toughness ceramic comprises a base material, a reinforcing phase and an interface transition zone, the base material is Y2O3-ZrO2 nano powder, the reinforcing phase comprises compact layers and porous layers which are alternately distributed, the compact layers enable alumina whiskers to be radially distributed in the radial direction, and the porous layers enable the alumina whiskers to be evenly distributed in the radial direction; a crystal whisker-nano particle-matrix three-stage toughening network is formed, a porous layer contains beta-Si3N4 crystal whiskers generated in situ, and an interface transition region is a ZrO2-beta-Si3N4 eutectic layer. According to the invention, the whisker is added, the fracture energy is consumed through the pull-out effect, the nano-particles inhibit crack propagation through the pinning effect, the matrix phase change is toughened, the fracture toughness of the ceramic is improved, and the crack propagation path is prolonged by 3-5 times. On the other hand, the sintering temperature is reduced, so that energy consumption is reduced.

A gas separation membrane for separating carbon dioxide includes: a separation layer formed of a polymer material and having a function of selecting and separating carbon dioxide; and a porous substrate including a first porous layer and a second porous layer. The gas separation membrane has a layer thickness T1 of 0.1 μm or more and 10.0 μm or less, an average pore diameter d1 of 10 nm or more and 10,000 nm or less, an aperture ratio A1 of 40% or more and 80% or less, a maximum height roughness R1 of 1 nm or more and 200 nm or less, a layer thickness T2 of 10 μm or more and 1,000 μm or less, a ratio d2 / d1 of an average pore diameter d2 to the average pore diameter d1 of 1.1 or more and 10,000 or less, and a ratio A2 / A1 of an aperture ratio A2 to the aperture ratio A1 of 1.1 or more and 2.0 or less.

To provide molds for use in the manufacture of antimicrobial resin molded products that are inexpensive, have little degradation over time, and have a small environmental impact, and a method for manufacturing such molds.SOLUTION: Mold 3 has a gas permeation gradient functional part 10 consisting of a porous layer 6 and a lattice layer 7 on a truss layer 5. The truss layer 5, porous layer 6, and lattice layer 7 are made of sintered metal, and the sintering temperature and time are adjusted to achieve the function of each part. The sintering process is continuous from the truss layer 5 to the porous layer 6 and lattice layer 7.SELECTED DRAWING: Figure 4

A porous layer is arranged on the surface of the inner wall of a micro-channel in the micro-channel heat exchanger, and the porous layer is filled with a lubricating agent; and anodizing the inner wall of the micro-channel to obtain a porous layer. The invention further provides a preparation method of the ultra-smooth micro-channel heat exchanger, which comprises the following steps: taking the micro-channel heat exchanger as an anode, performing anodic oxidation treatment on the inner wall of the micro-channel, and preparing the porous layer on the surface of the inner wall of the micro-channel; and then the porous layer is filled with a lubricating agent, and the ultra-smooth micro-channel heat exchanger is obtained. The invention further provides application of the ultra-smooth micro-channel heat exchanger in electronic devices. The ultra-smooth micro-channel heat exchanger has good corrosion resistance and high boiling heat exchange efficiency.

The invention belongs to the technical field of electromagnetic shielding materials and conductive polymer-based composite materials, and particularly relates to a flexible aramid nanofiber conductive film and a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing an aramid nanofiber membrane through vacuum-assisted filtration, and then immersing the aramid nanofiber membrane into a nickel ion-containing solution for ultrasonic pretreatment and activation treatment by a sodium borohydride solution to obtain a modified aramid nanofiber membrane; and mixing with a chemical nickel plating solution under an external magnetic field, drying, and dip-coating with a polydimethylsiloxane packaging solution to obtain the flexible aramid nanofiber membrane. The finally obtained flexible aramid nanofiber conductive film has excellent flexibility, heat resistance and corrosion resistance. The method is easy to operate, economical and environmentally friendly, the material has excellent electromagnetic shielding performance due to the porous layered structure of the formed nanofiber membrane and the nickel coating on the surface, and the problem of mutual interference between electronic elements can be solved.

The invention relates to an integrated chip heat dissipation cover plate structure which comprises a substrate and a top cover connected and installed above the substrate, a sealed heat exchange cavity is defined between the substrate and the top cover, a plurality of rib columns or fins are integrally arranged on the top face of the substrate, the top face of the substrate is covered with a porous layer, the rib columns or the fins penetrate into the porous layer, and the top face of the substrate is covered with a heat dissipation layer. A plurality of micro concave holes are formed in the surface of the porous layer, and a radiator connector for cooling working media to flow in and flow out is connected to the top cover. Compared with the prior art, heat is guided into the heat exchange cavity through the substrate to achieve efficient heat exchange, the integrated chip heat dissipation cover plate can effectively reduce thermal resistance, heat dissipated during high-frequency work of the chip can be efficiently taken away by means of phase change cooling, meanwhile, a heat dissipation system is integrated in the heat dissipation cover plate, and heat dissipation efficiency is improved. The size is small, and the structure is simple.

A nuclear reactor includes a heat exchanger that transfers thermal energy from a primary reactor coolant to a secondary coolant. The heat exchanger is formed with a hot flow channel, a cold flow channel, and a porous layer between the hot flow channel and the cold flow channel. The porous layer may be thermally insulative to reduce the efficiency of thermal energy transfer from the hot flow channel to the cold flow channel. The porous layer may have a control gas passed therethrough that can be tailored to control the thermal energy transfer through the porous layer. The control gas can be tested for leakage within the heat exchanger. The control gas may also be used to sequester fission or activation products.

This specification discloses a converter element and light emitting devices including the converter element. The converter element is monolithic with at least two layers, where one layer is more porous than the other layer. The converter element may be integrated with a reflector layer, such as by metallization. The layer of the converter structure that is denser and having a smoother surface may be the one that is metallized, while the more porous layer is closer to the laser. The porosity enhances light extraction while the smoother surface decreases a loss of reflectivity at the reflector-phosphor interface. The converter element may be used in a laser based light emitting device.

Provided is a member having a base material and a light interference layer which is provided on at least one main surface side of the base material and which is composed of at least two layers, the member being characterized in that the light interference layer comprises, in order from the base material side, a first layer and a porous layer containing particles of an inorganic compound.

Fabricating a capacitor includes forming conduits in a porous layer of material. The porous layer of material has particles that each includes a dielectric on a core. The formation of the conduits causes a portion of the dielectric to convert from a first phase to a second phase. The method also includes removing at least a portion of the second phase of the dielectric from the porous layer of material.

Provided are acoustic articles, and related methods, that include a porous layer and heterogeneous filler received in the porous layer. The heterogeneous filler can include clay, diatomaceous earth, graphite, glass bubbles, polymeric filler, non-layered silicate, plant-based filler, or a combination thereof, and can have a median particle size of from 1 micrometer to 1000 micrometers and a specific surface area of from 0.1 m2 / g to 800 m2 / g. The acoustic article can have an overall flow resistance of from 100 MKS Rayls to 8000 MKS Rayls. The acoustic articles can serve as acoustic absorbers, vibration dampers, and / or acoustic and thermal insulators.

A secondary battery includes a positive electrode, a negative electrode, a separator, and an electrolytic solution. The separator is disposed between the positive electrode and the negative electrode. The separator includes a porous layer and a covering layer. The covering layer is disposed between the porous layer and the positive electrode. The covering layer includes insulating particles. The insulating particles each have a major axis and a minor axis. An average aspect ratio of the insulating particles is greater than or equal to 2. The average aspect ratio is defined by the major axis and the minor axis of each of the insulating particles. The insulating particles include inclined particles. An inclination angle of each of the inclined particles is greater than or equal to 45° and less than or equal to 135°. The inclination angle is defined by a surface of the porous layer and the major axis. The positive electrode includes positive electrode active material particles. In a region between respective centers of two of the positive electrode active material particles that are adjacent to each other, a proportion of the number of the inclined particles to the number of the insulating particles is greater than or equal to 10%.

The invention relates to a chlorine dioxide sustained-release ball, which relates to the technical field of environmental protection and disinfection, and comprises an activated alumina ball and an inorganic porous layer from inside to outside, wherein the activated aluminum oxide ball is loaded with sodium chlorite and a porous film, and the inorganic porous layer is loaded with the porous film. The chlorine dioxide sustained-release ball disclosed by the invention realizes the goals of high load, long period, constant-speed release and stable physical form.

The present application relates to a kind of high-temperature-resistant inductive angle sensor, belong to angle sensor technical field.The sensor includes: gradient composite ceramic substrate Al2O3-ZrO2-Al2O3, realize thermal expansion coefficient gradient matching by intermediate layer zirconium oxide doped yttrium oxide, reduce thermal stress cracking risk;Substrate surface is formed with micro-arc oxidation porous layer in turn titanium nitride nanocrystalline layer, improve surface bonding force;Atomic layer deposition process is used to prepare TiN or TiN / Ag composite film coil, improve temperature resistance;Through electron beam welding and transient liquid phase bonding composite process coil and circuit;Insulating encapsulation layer is made of boron nitride nanosheet and high-temperature-resistant resin, improve thermal conductivity and breakdown field strength.The present application is through gradient substrate design, thin film coil integration and composite process optimization, solves the thermal stress failure of traditional inductive sensor under high temperature, coil oxidation and insulation aging problem, suitable for angle measurement under extreme environment.

This invention provides a method for constructing a stiffness equivalent model of a porous laminated structural member, including: S1, obtaining the unit cell characteristic size parameters of the pores on the laminates; S2, constructing a unit cell solid model of the laminates; S3, constructing a unit cell solid finite element analysis model of the laminates; S4, preprocessing the unit cell solid finite element analysis model; S5, calculating the stiffness equivalent modulus of the laminates at different temperatures; S6, repeating steps S1 to S5 to calculate the stiffness equivalent modulus of all laminates in the porous laminated structural member in each direction at different temperatures; S7, performing integrated boundary processing on the stiffness equivalent modulus calculated in step S6 to construct the stiffness equivalent model of the porous laminated structural member. This method can simplify porous laminated structural members into non-porous laminated structural models, effectively reflecting the mechanical properties of porous laminated structural members, while significantly improving computational efficiency and accuracy, and has broad engineering application prospects.

A porous transport layer, PTL, (200) for a water electrolyzer (100). The porous transport layer comprises a porous layer (210), where the porous layer (210) is a porous structure comprising irregular pores (212) and solid sections (213). At least a first surface (211) of the porous layer (210) is formed by a first plurality of solid sections (213). At least some of the solid sections (213) in the first plurality have at least one surface that is substantially flat and arranged facing outwards from the porous layer such that it forms part of the first surface (211).

In a phase-change cooling module and a battery pack using the phase-change cooling module, the phase-change cooling module includes a body, a porous layer and a cooling medium. The body has a cooling channel formed through an inside of the body along a predetermined passage, and is attached to an cooling object to transfer a heat from the cooling object to the cooling channel. The porous layer is formed on a side wall of the cooling channel with a predetermined thickness, and has a plurality of pores at a surface of the porous layer. The cooling medium makes contact with the porous layer and flows an inside of the cooling channel, to absorb the heat from the cooling object. The cooling medium uses the heat from the cooling object as a potential heat for a boiling.

[Problem] To provide: a nano-imprint molding template that has high gas permeability, and that has high strength and can be used for a long period of time in an industrial production process; a mold using the template; and a method for manufacturing the mold. [Solution] A mold 3 has attached thereto an imprint molding template 8 that is an extremely stable composition obtained by combining a silicon-containing monomer and a titanium-containing monomer. The mold 3 has a gas permeation gradient function part 10 formed by laminating a porous layer 6 and a lattice layer 7 on a truss layer 5. The materials of the truss layer 5, the porous layer 6, and the lattice layer 7 are each a sintered metal material, and functions of respective parts thereof are realized by adjusting the sintering temperature and the sintering time. The sintering is continuously performed starting from the truss layer 5 to the porous layer 6 and the lattice layer 7.

The invention provides a nano-diamond high-strength supporting composite material and a preparation method and application thereof, the nano-diamond high-strength supporting composite material comprises a substrate, a polymer layer and a porous layer which are arranged in sequence; the porous layer comprises a nano-diamond array and an electrode active material layer; the nano-diamond array is arranged on the polymer layer and is embedded by the electrode active material layer. The surface porous layer can dredge ion deposition and improve ion deposition sites; the nano-diamond array serves as a buffer framework and can restrain volume expansion in the aluminum alloying process, the integrity of the overall structure is kept, and electrode pulverization is effectively relieved. The surface of the diamond array is coated with an electrode active material layer, and a continuous electronic path is provided; and the two layers also form a compact interlayer bonding structure, so that stress can be effectively dispersed, the adhesive force of the porous surface layer is improved, interface fracture and stripping of the porous surface layer are avoided, and the performance is improved.

An electrochemical apparatus includes a separator, a positive electrode plate, and an electrolyte solution, where the separator includes a porous layer, and an average pore diameter of the porous layer is 0.5 μm to 18 μm; the electrolyte solution includes propyl propionate, and based on a mass of the electrolyte solution, a mass content of propyl propionate is 25% to 55%; and the positive electrode plate includes a positive active material layer, the positive active material layer includes a conductive agent, the conductive agent includes at least one of conductive carbon black or Ketjen black, and a specific surface area of the conductive agent is 600 m2 / g to 1100 m2 / g.

A gas supply body for use in a wastewater treatment apparatus for purifying wastewater using action of microorganisms in the wastewater, the gas supply body comprising: a gas delivery layer and a sheet laminate, wherein the sheet laminate comprises a base material that is a microporous membrane comprising a plurality of fine through holes penetrating therethrough in a thickness direction, and a gas-permeable non-porous layer, wherein the gas delivery layer, the base material, and the gas-permeable non-porous layer are arranged in this order, and wherein the base material has a pore size of 0.01 μm to 50 μm. A method for producing a bag for a gas supply body disposed in a wastewater treatment apparatus comprising a sheet laminate.

The utility model discloses a heating body, an atomizer and an aerosol generating device. The heating body comprises a storage piece, a base body and a heating piece. The storage piece is provided with a storage cavity, and the storage cavity is used for storing an aerosol generating substrate. The matrix comprises a porous layer and a compact layer, the porous layer is provided with a flow channel for the aerosol generating matrix to flow, the compact layer and the storage piece are arranged on the two opposite sides of the porous layer respectively, the periphery of the matrix extends out of the periphery of the storage piece, and the compact layer is used for preventing the aerosol generating matrix from flowing out of the side, connected with the compact layer, of the porous layer. The heating piece is arranged on the base body and used for heating the aerosol generating substrate. According to the heating element, the atomizer and the aerosol generating device, the heating element can preheat the aerosol generating substrate through the storage element, and a preheating circuit does not need to be additionally arranged, so that the structure of the heating element can be simplified, and miniaturization of the heating element is facilitated.